10 Best Boiler for Radiant Floor Heat – Meet the market leaders of floor heating

As an Amazon Associate I earn from qualifying purchases.

The electric heating floor has recently become a trend for retrofit and new projects. But you may ask why does my home needs it? Well, to answer that, we are going to backfire some questions. The best boiler for radiant floor heating can be the ultimate solution for serving the thermal quench to be straight. 

Did you ever feel a shiver running down your spine when you step on the floor? Or have you ever walked into a room and it felt terribly cold?

If the answer yes, then you need a floor heating system in your home because it will keep your home warm even in the dead of winter. It heats up your room and keeping you warm. 

So now, probably you’re confused about how to choose the right floor heating system for you. No worries at all. To help, we’ve listed down the top 10 heating floors for you.

List Of best propane boiler for radiant floor heat

if you have not enough time for reading this content here is we Quick answer to you for choosing the Best boiler for the radiant floor.

Best Propane Boiler For Radiant Floor Heat

Rinnai V65EP Tankless Hot Water Heater, 6.5 GPM, Propane, Outdoor...
2,300 Reviews
Rinnai V65EP Tankless Hot Water Heater, 6.5 GPM, Propane, Outdoor...
  • Endless Hot Water: Our tankless hot water heaters...
  • Energy and Space Efficient Tankless Gas Water...
  • Optimal Water Pressure: This tankless water heater...
  • Professional Installation Recommended: Visit the...
  • Guaranteed to Last: 10-, 5-, and 1-year...
18L Propane Gas LPG Tankless Hot Water Heater 5GPM Instant Boiler...
7 Reviews
18L Propane Gas LPG Tankless Hot Water Heater 5GPM Instant Boiler...
  • PREMIUM QUALITY- Tankless water heater; Gas...
  • EFFORTLESS CONTROL- Clear LED display of current...
  • MULTI-LEVEL PROTECTION- Care much about safety on...
  • WALL-MOUNT DESIGN- It is light-weight, portable...
  • DIVERSIBLE APPLICATION- CE passed product, fast to...
TENGCHANG 18L LPG Propane Gas Hot Water Heater Tankless Instant...
172 Reviews
TENGCHANG 18L LPG Propane Gas Hot Water Heater Tankless Instant...
  • Gas Type: LPG Liquid Petroleum Gas (PROPANE),...
  • Working temperature:-8-45, Thermal input: 36KW,...
  • Automatic ignition system, Flame failure...
  • Gas pressure: 2800Pa, Gas pipe: G 1/2", Water...
  • Certification: ISO 9001:2000, 3 Years Warranty for...
TC-Home 10L Instant Hot LPG Water Heater 2.6 GPM Propane Gas Bath...
31 Reviews
TC-Home 10L Instant Hot LPG Water Heater 2.6 GPM Propane Gas Bath...
  • Gas Type: LPG Liquid Petroleum Gas...
  • SIZE: 13.4"(L) x5.7"(W) x23.2"(H), Working...
  • Temperature rise: 25, Minimum working water...
  • Gas pipe: G 1/2"; Water Inlet: G1/2'',Water...
  • Over water pressure protection function : to...
Rinnai RU199iP Condensing Tankless Hot Water Heater, 11 GPM,...
61 Reviews
Rinnai RU199iP Condensing Tankless Hot Water Heater, 11 GPM,...
  • Endless Hot Water: Our tankless hot water heaters...
  • Energy and Space Efficient: The tankless design of...
  • Optimal Water Pressure: With a hot water flow rate...
  • Professional Installation Recommended: Visit the...
  • Guaranteed to Last: 15-, 5-, and 1-year...
Flame King Portable Tankless Water Heater Propane Gas 10L 2.64...
112 Reviews
Flame King Portable Tankless Water Heater Propane Gas 10L 2.64...
  • CSA SAFETY APPROVED: Your family is safe with...
  • 68,000 BTU with FULLY ADJUSTABLE control knobs:...
  • DURABLE steel cased water heater designed to last;...
  • CSA CERTIFIED Regulator and 5-feet hose included...
Rinnai V53DeP Tankless Hot Water Heater, 5.3 GPM, Propane,...
2,300 Reviews
Rinnai V53DeP Tankless Hot Water Heater, 5.3 GPM, Propane,...
  • Endless Hot Water: Our tankless hot water heaters...
  • Energy and Space Efficient Tankless Gas Water...
  • Optimal Water Pressure: This tankless water heater...
  • Professional Installation Recommended: Visit the...
  • Guaranteed to Last: 10-, 5-, and 1-year...
Rinnai RUCS75iN Tankless Hot Water Heater, 7.5 GPM, Natural Gas,...
64 Reviews
Rinnai RUCS75iN Tankless Hot Water Heater, 7.5 GPM, Natural Gas,...
  • Endless Hot Water: Our tankless hot water heaters...
  • Energy and Space Efficient Tankless Gas Water...
  • Optimal Water Pressure: This tankless water heater...
  • Professional Installation Recommended: Visit the...
  • Guaranteed to Last: 12-, 5-, and 1-year...
Stiebel Eltron Tempra Plus 29 kW, tankless electric water heater...
809 Reviews
Stiebel Eltron Tempra Plus 29 kW, tankless electric water heater...
  • Proven reliability
  • No venting required
  • Sleek design fits anywhere
  • Save at least 15-2% on the hot water portion of...

Top Radiant floor heating boiler Comparison Chart

Nameit’s Best forMaterialWeight
FloorHeat 3-Zone Preassembled Best for Beginners Stainless Steel 62 pounds
PEX Manifold Radiant Floor Heating Best for households Stainless Steel 8 Pounds
AB Plate Heat Exchanger Best for coolest weather 316L stainless steel 5.14 pounds
Mophorn Radiant Floor ManifoldBest for commercial spaces Stainless Steel 11 Pounds
AB Loop Radiant Heat ManifoldBest for durability Brass 13.22 pounds
BestEquip Radiant Floor Manifold Best for renovation Stainless steel 8 pounds
SEAL 70 Sq. Ft 120V Radiant Floor HeatBest for budget PTFE & PVC 8.32 pounds
SunTouch 81009691 Electric Floor Heating KitBest for cost-effectiveness floor sensor 6.65 pounds
Heatizon HeatWave Floor Heating CableBest for ease of operation Cable 12.32 pounds
Schluter DITRA HEAT DHEKRT12040Best for small rooms Cable 17.95 pounds

10 Best boiler for radiant floor heat Reviews Pros & Cons

Best for Beginners radiant floor heating: FloorHeat 3-Zone Preassembled Radiant Heat Distribution

1. Best for Beginners: FloorHeat 3-Zone Preassembled Radiant Heat Distribution

FloorHeat’s Heatwave system can be considered one of the best underfloor heating systems. Floorheat’s electric floor heating systems are simple to install and has customizable installation configurations. 

Let’s talk about its configuration in detail. 


This heating system will come with a panel to simplify your radiant heating floor installation. The panel will have all the essential and necessary components you need to operate your heating system to pass the local building codes.

Pre-programmed Setup:  

The thermostats are made to have different pre-programmed setups. This thermostat has up to 4 even programmings. It also has pre-programmed configurations installed for quick setup even when you are in a rush. 

Energy Efficient: 

The Heatwave system of the floor heating system has a 10-foot long sensor. This is relatively standard for your optimal usage. It is energy efficient to get a warm floor and do not have to worry about paying hundreds of bugs.  

Preassembled Hydronic control:

Floor Heat is one of the best because it has preassembled hydronic control that is professional and will save you time and money. And the boiler is so easy and convenient.


This system is 10 in deep X 44 inch high X 32.5 inch wide. 

Personally, from our perspective, it is a wonderful floor heating system. It is easy to install, gives you a warm floor without any effort. You will simply love everything about FloorHeat. 


  • Attractive design and also saves space.
  • Energy-efficient. 
  • Complete embedded system.
  • The installation is really simple.       


  • It cannot be installed outdoors.

Best for households radiant floor heating: PEX Manifold Radiant Floor Heating

Best for households: PEX Manifold Radiant Floor Heating

If you know about heating systems, you probably know how important it is in this particular premise. To be honest, it is quite like the heart. But you will be amazed to learn what PEX Manifold can do for you.

Size3 Loop
MaterialStainless Steel
ColorStainless Steel
Item Dimensions LxWxH12 x 4 x 14 inches
Exterior FinishChrome
Thread TypeNPT
Item Weight8 Pounds

We will be discussing the details below: 

Flow Meters: 

It can be quite tricky to track how much water is flowing through. But with flow meters incorporated, you can easily monitor how much water is flowing through in GPM, which stands for Gallons per Minute.

Manual Balancing Valves:  

This floor heating system comes with manual balancing valves which will help you to balance the heating system and will allow you to regulate the flow. It will help you to navigate through the manifold branches.

Fill and drain valves: 

It also has two more valves that will allow you to quickly drain or purge and fill the whole radiant system. The valves have functioned with a hose connection and cap, which makes the work really easy for you.

See Also: Garden hose reviews consumer reports

Heat Distribution: 

The heating cable is ⅛ -inches in thickness, which will not raise the finished floor. It also includes a zero EMF system. The heating cable is 3-inches apart for optimal heating. Optimal heating ensures equal heating in all parts of the floor.


This floor heating mat is 4.29 pounds in weight. The dimensions are 12 x 4 x 14-inches. 

The heating system is ideal for mudrooms, bathrooms, saunas, etc. also suitable for rectangular-shaped areas. You can simply adjust it according to your requirements. 


  • It is made of stainless steel.
  • Comes with duty morning brackets. 
  • Energy efficiency
  • Pressure tested and preassembled.     


  • Designed for typical rectangular shaped places.

Best for coolest weather radiant floor heating: AB Plate Heat Exchanger

Best for coolest weather: AB Plate Heat Exchanger

Ab Plate is one of the most popular heating cables you will find in the marketplace.  The unique features will amaze you, and I found it irresistible to add this amazing floor heater to my shopping cart! Let’s explore the scenario in your case.    


The heating system is completely durable and long-lasting because it is built with a king material that is stainless steel of 316L and incorporated with 99% copper.

Programmable Thermostat: 

Usually, thermostats are included in the floor heating systems so that your floor’s temperature remains consistent. It also comes with a 10 feet long wire for easy connection with the thermostat, so no hassle during installation. 


You can operate the temperature with a minimum of -265 degrees Fahrenheit and a max of 482 degree Fahrenheit. The design pressure is 435 psi, and the test pressure is 653 psi. These features make the heating system efficient.


The overall dimension of the cable is 3 x 8- inches. The weight is 5.14 pounds. 

If you are planning on lifting the standard for underfloor heating systems, then this is your thing. This budget-friendly cable is great for all types of spaces. 


  • It has 200,000 – 280,000 BTU capacity.
  • Energy efficient
  • Compatible with all types of domestic floors 
  • Comes with a smooth thread for flexible, easy and quick hookup.


  • The thermostat requires a powerline, so it cannot be installed in a drywall             

Best for commercial spaces radiant floor heating: Mophorn Radiant Floor Manifold

Best for commercial spaces: Mophorn Radiant Floor Manifold

Undoubtedly, Mophorn offers a great product with many diversity and variations. This product is one of the best out of the box type floor heating system. Let’s delve deeper into it.

MaterialStainless Steel
Color4 Loop
Item Dimensions LxWxH19 x 15.5 x 3 inches
Connector TypeCap
Thread TypeNPT
Item Weight11 Pounds
Number of Pieces1

Energy Efficient:

Mophorn electric floor heating kit is an energy-efficient kit. When you think of purchasing a heating kit, you might be worried about paying the bills. Well, most heating kits or systems come with energy-efficient features. 

Dual Wire Technology: 

The warmwire electric floor heating wire kit. The kit’s dual wire technology reduces the amount of Electromagnetic fields to ultra-low levels. The wire is around 10 feet. 

Preassembled Technology: 

This particular PEX manifold comes preassembled and also pressure tested. You just simply have to mount the manifold over the brackets and then connect the valves accordingly. And then connect the PEX tubing. As easy as that.

Flow Meters: 

This heating system comes with body flow meters, and you can adjust the flow rates with it. You can also find an isolation ball valve with a one-inch NPT thread made of high-quality brass frogging. 

Automatic Air Vent: 

There is also an automatic air vent floating type for elimination purposes. You can also find a cap and it for some pressure testing purposes.   

Manifold adapters: 

As this is a manifold heating system, you will find manifold adapters that need PEX tubing. You might be worried for it. But do not worry at all. The manifold adapter is compatible with any type of PEX tubing. 


The weight of this electric floor heating kit is 11 pounds. Its dimensions are 19 x 15.5 x 3-inches.

No more cold floors! Ideal for all types of floors. You’ll be impressed by the performance of the kit. No compromise with evenly heated floors. 


  • Easy to install.
  • Evenly heated floors. 
  • Have flow meters to inspect flow rates.
  • The adapters are compatible with any type of tubing.


  • Needs initial amount of planning 

Best for durability radiant floor heating: AB Loop Radiant Heat Manifold

Best for durability: AB Loop Radiant Heat Manifold

This is an all-in-1 radiant floor heating boiler sizing underlayment specially designed for glue-down, laminate and floating hardwood, and engineered wood floors. It provides you with automatic air ventilation, shut-off valve, temperature gauge etc. etc. That is what makes it all-in-1. Without a doubt it is one of the best boiler for radiant floor heating and comfy you longer.

Size5 Loops
ColorStainless Steel
Connector TypeCap
Exterior FinishNickel
Thread TypeNPT

High Quality Materials

This WiseWater PEX radiant floor heating is made of durable stainless steel that is pressure-resistant and corrosion-resistant and has higher thermal conductivity. It will have insertion into plastic pipes and faster heating abilities.

All in one feature

Do you want to know what this floor heating system can do for you? Here’s what. Each manifold will include a shut-off valve, automatic air vent, temperature gauge, drain valves with outlet caps, and flow balancing valve/manual, which will have wheels. The wheels will allow you to supply and return the trunks. Now tell me can you call it otherwise than all in one?  

Easy to install

The heavy-duty stainless steel has mounting brackets, and it makes it attachable to any type of wall quickly. You won’t even need any PEX tools. You will just have to use regular pliers or an adjustable wrench to connect the PEX tubing to your manifold. 

Multiple Sizes

It is versatile, and it is designed for many heating applications. Well, the mats cannot be cut to fit a smaller space. So what are you going to do if you need a smaller mat? For that, this company offers you a wide range of kit sizes to find the perfect one for your house. The company offers you 2 loops, 3 loops, 4 loops, 5 loops, 6 loops, 8 loops and 12 loops.


The dimension of this heating system is 15.6 X 15.2 x 4.2 inches. And the weight is 13.22 pounds

This is a great floor heating system if you hate cold floors. The 4-in-1 quality will serve you at your best.


  • You can install it without cement.
  • Has laminate floor noise reduction.
  • Created with anti-microbial resistance for molding.
  • Has subfloor thermal insulation.


  • You might need an electrician to put it together.

Best for renovation radiant floor heating: BestEquip Radiant Floor Manifold

Best for renovation: BestEquip Radiant Floor Manifold

You will love this thermostat for its sleek, thin profile and large easy to read font. The full-featured touch screen provides a reliable and easy way to control your floor heating system. This thermostat has many cool features that will make your jaw drop. So let’s discuss them in detail.

Item Dimensions LxWxH15 x 12 x 3 inches
Thread TypeNPT

Intelligent Control 

There is a valve on this floor heating system over the return manifold which accepts a thermoelectric head for remotely controlling the area. This most intelligent control you can ever find.

High Quality Material

This heating system’s core material is 304 stainless steel, both pressure-resistant and corrosion-resistant. The copper valve core will extend the service life.


As this is a manifold heating system, you will find manifold adapters that need PEX tubing. You might be worried about it. But do not worry at all. The manifold adapter is compatible with any type of PEX tubing. 

Extra features

The extra features include energy usage monitoring, adjustable color display, a user-intuitive programming menu, and a help feature in each screen.


The weight of this electric floor heating system is 8 pounds. Its dimensions are 15 x 12 x 3 inches.

You are going to love it when you try this floor heating system. We highly recommend this to you as it has some unique features.


  • The manifold comes preassembled.
  • It has a broad application of different PERTs.
  • It is compatible without any type of special adapters.
  • Have all copper spools.


  • It does not heat up to 90 degrees

Best for budget radiant floor heating: SEAL 70 Sq. Ft 120V Radiant Floor Heating Boiler Sizing Mat

Best for budget: SEAL 70 Sq. Ft 120V Radiant Floor Heating Boiler Sizing Mat

This one is an underfloor heating system that will allow you to radiant hearing for smaller and simpler areas at budget-friendly costs. It has so many unique features, and you won’t have enough of it. Let’s talk about it in detail.

Wider range of installation

This floor heating mat can be installed underneath the natural, stone, ceramic tile, wood, hardwood, vinyl, and other popular flooring materials. It gives homeowners a floor heating mat that is truly luxurious.

Preset function

The user will set 6 working periods and corresponding temperatures every day. After that, the thermostat will work according to your set.


It has exquisite high-quality materials that make it truly durable and long-lasting. It is listed as safe heating cables with multiple configurations. It adheres to the floor. It has 120V related voltage with dual wire 16 AMG and ground braid, which is 10 ft. It also has cold leads to lessen the electromagnetic fields to ultra-low levels.


The dimension of this product is 6.6 feet L X 19.7 inches W. it is 10 sq. feet-10W, 1.25A.


  • UL is listed for Canada and the USA and complies with electrical safety standards.
  • There are zero magnetic fields.
  • There is optimal heat distribution.
  • It will not raise your finished floor.


  • The heating wire cannot be shortened.

Best for cost-effectiveness radiant floor heating: SunTouch 81009691 Electric Floor Heating Kit

Best for cost-effectiveness: SunTouch 81009691 Electric Floor Heating Kit

Looking for something that can be installed in a single day? Then SunTouch 81009691 Electric Floor Heating Kit is your thing. SunTouch has experience in designing floor heating systems for over three decades. They have made a reputation with thousands of success stories all around North America.      

Let us describe the details.

Programmable thermostat: 

The floor heating kit is designed with a programmable thermostat that ensures accuracy. The built-in 15-amp relay controls even up to 150 square ft. Thermostats are included so that the heating system remains at a consistent temperature.        

Energy usage monitor:  

The touchscreen programmable thermostat also has a monitor that is fully controllable. SmartStart Technology automatically fixes the start time of the floor heating system. It also ensures that the floor reaches the set temperature at your scheduled time. The Energy usage monitor will display the hours of the operation system. 

7-day Programming schedule:   

The floor heating kit includes a 7-day programming schedule. This 7-day programming schedule allows you to choose the hours and days of operation. The smart monitor will show you the details so you can change them according to your needs.

Easy Installation: 

This SunTouch floor heating system kit can be easily adjusted to accommodate the curves and angles of your floor. Simply install it using double-sided tape. This mesh can be trimmed and flipped according to your need. 


This particular mesh is 45 square feet in size. And it weighs 6.65 pounds. 

If you love the luxury of warm floors, then just get yourself a SunTouch 81009691 Electric Floor Heating Kit. It is a great quality floor heating mat for all types of families.


  • The system is available to warm tile, stone, wood, plywood, and other 
  • Easy installation 
  • Can be trimmed according to your need    
  • Built-in CFGI fulfills safety requirements 
  • Designed with air and floor sensing modes    


  • It may require a few days to master the controls of the floor heating system   

Best for ease of operation radiant floor heating: Heatizon HeatWave Floor Heating Cable

Heatizone is known for providing you a versatile range of floor heating systems. They also allow you to customize the installation. Heatizone has come up with the Heatizon Heatwave Floor Heating Cable. 

The exciting features are discussed below: 

Multi-voltage Settings: 

Keeping the floor at the ideal temperature is important. Heatizon Heatwave Floor heating cables ensure to give you the perfect warm floor that you need. They feature a multi-voltage setting through which you can easily change the voltage. 

Built-in Sensor: 

With all other features, the thermostat also includes two different types of sensors. One of them is the air sensor and the floor sensor thermistor. These sensors come with 10 feet of NTC sensor cable. 

Programmable Thermostat: 

Heatizone floor heating systems are manufactured with a programmable thermostat. These thermostats can be programmed to four different events. It has a simple user interface and Class a GFCI for security. 

Energy Efficient: 

Heatizone’s Heatwave floor warming cable is an energy-efficient floor warming system. It has multiple voltage control options. The temperature range of the floor heating system is around 41-104 degrees Fahrenheit.

Completely Embedding System: 

This underfloor heating cable can be embedded in materials like cement, concrete slabs, plywood, etc. It is a fully embedded heating system. And once installed it gives you constantly warm floors. 


The weight of the heating cable is 12.32 pounds. And the size is 15.2 x 15 x 6-inches. 

This Heatizon heating cable can be ideal for places that are oddly shaped. It is worth the money you pay because you get warm floors in all kinds of weather.


  • Programmable thermostat
  • Energy-efficient 
  • Completely embedded system
  • Budget-friendly         


  • Installation is tricky   

Best for small rooms radiant floor heating: Schluter DITRA HEAT DHEKRT12040 Floor Heating Kit

Best for small rooms: Schluter DITRA HEAT DHEKRT12040 Floor Heating Kit

Schluter DITRA HEAT DHEKRT12040 floor heating kit is an all in one-floor heating kit. Bring the perfect combination of beautiful tile and a warm floor heating system to your home space. 

BrandSchluter Systems
Item Dimensions LxWxH14 x 40 x 14 inches
Item Weight8.16 Kilograms
CertificationCertified frustration-free

Let’s talk about the details, Shall we? 

Touchscreen Programmable Thermostat: 

Thermostats are basic for floor heating kits, cables or systems. Programmable thermostats are designed in such a way that you can change and adjust the temperature. Thermostats tend to keep the temperature consistent. Schluter DITRA heating kit comes with a Touchscreen Programmable Thermostat. So, it is easy to control.

Heating Cable:

Schluter DITRA Heating Kit includes heating cable. These cables are to be placed under your tiles. They won’t rise up much. These cables will make sure that you get a warm floor whenever you want.

Two floor sensors:  

The kit includes two floor sensors. Floor sensors are vital. Thermostat and sensors work together to provide the best performance for warming up floors. 


The weight of the heating kit is 17.95 pounds. And the size of the kit is 14 x 40 x 14 inches.  

Oh my my, what a luxury! Simple installation with easy controls. It is a promise of giving you warm floors for years. 


  • Easy to install
  • Easy to control 
  • Comes with thermostat
  • Includes 2 different sensors 


  • There’s a chance of losing warranty if installed incorrectly 

Read Also: foodsaver system reviews

Can a tankless water heater be used for radiant floor heat?

The answer is yes, but it requires a lot of work. Tankless water heaters have been a proven technology with a long record of heating on-demand water heaters. But a few contractors have used them in the past for hydronic radiant heat, the information about finding the right system design can be hard. 

In some cases perfecting a system took a lot of trial and error. While the sun is out, you don’t need heat all day. So, you should use a programmed thermostat that will limit the temperature for your whole day according to your need.

Why tankless?

Well, the answer is straightforward. It takes a tiny place, and it usually measures 13 and a half inches by width, 23 inches by height and 9 inches in depth. It can also be mounted on any exterior wall type and will offer you endless hot water. Sound amazing, doesn’t it?

  • Temperature factor: Although there is the fact that the units are not frequently used for radiant heat, they are really ideal heat source for this premise as their output temperature can easily be fitted to the needs of the radiant heating system. Most of them provide up to 180-degree Fahrenheit, which is more than enough for 110-to-120-degree Fahrenheit is needed to run a radiant heating system. 
  • Economics: The economics of utilizing a tankless water heater is to supply both heating and DHW are also quite attractive. The system’s total cost falls around $5000, which is pretty much budget friendly.

How to select a tankless heater

It might be tricky to select a tankless heater because there are different types of them as they can be powered by propane, natural gas, or electricity. My suggestion will be for using a propane-powered heater as it is easy, and the electric-powered ones will not make it economically feasible.

  • Remote control: Try selecting a heater with are remote control as it makes the work easier for you. People usually set the temperature with a remote by 140 degrees coming out of the unit, and it is hot enough to meet your demands for wood and tile floors.
  • Sizing: The tankless water heater also comes in different sizes, so select the one which suits best for your space. And perfect sizing requires that you get an accurate picture of the home’s heating requirements. There is generally 5 type of low-flow faucet, dishwasher, shower head, clothes washer, and whirlpool tub.

BTU: Usually, a well-insulated brand-new house will not require more than 15 BTU per hour per sq foot. For 2000 sq feet, that will be 30000 BTU per hour. Even for the poorly insulated house, it shouldn’t require more than 60000 BTU per hour, which is okay because most of the units will have at least 150000 BTU outputs per hour.

Choosing the components 

Suppose you are willing to install a best boliler for radiant floor heating system with a combination of tankless water heater and radiant heat. In that case, you need a variety of fittings, switches, and pumps.

  • A vent pipe: it is really essential to use a vent pipe for the heater as it allows to have an intake water-filler screen and it helps for combustion and exhaust air.
  • Rinnai: The Rinnai will sell an optional plumbing kit which will contain two boiler drains, ball valves and a pressure-relief valve. If you buy it, it will provide to facilitate the purging system of air. And if you use mixing valves it will require a temperature gauge downstream for each of the valve and it will make you able to monitor the temperature of the water inside your system.
  • Programmable Thermostats: It is really essential to use programmable thermostats as the radiant floor systems are quite slow with their time. So if you set your timer with programmable thermostats, your work will become quite easy through-out your whole day.

What kind of flooring can you use with radiant flooring?

Well, surprisingly radiant floor system can be installed over a wide range of flooring. Some of its heating techniques and features cannot be used on all floor coverings.

The best type of flooring for radiant heating system are:

  • Ceramic tile.
  • Natural stone.
  • Laminate.
  • Porcelain tile.
  • Vinyl.

Best flooring featurettes

If you have to decide if the flooring is good or bad, you will probably look at its features, whether it is prone to water or heat, the floor’s thermal conductive nature, the thickness of the floor, the tendency to expand and contract, and many more.

  • The thicker floor coverings such as engineered wood or solid hardwood are like poor thermal bridges. 
  • The mineral-based floor coverings like stone and chiefly tile are really good thermal conductors.
  • Tile and stone don’t tend to contract or expand.
  • Floorings like solid hardwood are vulnerable to heat and moisture and can be easily damaged by them.
  • Natural stone, ceramic, porcelain are the best type of floorings as they encompass all four types of factors. Because the tile always feels colder than the other flooring types, the want of radiant heat against it is excellent.

Types of flooring and why it is good

  • Porcelain or ceramic tile: This type of flooring is ideal to use because it is thin and mineral-based, meaning that it conducts with heat very well. Moreover, it doesn’t contain any organic compounds to degrade if a hydronic system tends to leak water. It heats up really fast when the system turns on, and it also retains heat as soon as the system shuts off.
  • Natural stone flooring: It is quite similar to porcelain and ceramic tile, and any aggregate or natural stone is a perfect fit for a radiant heating system. It is safe, and it also retains heat for a more extended period of time. It is comparatively thicker than porcelain or ceramic, so it heats up slowly but never contracts and expands. Moreover, it cannot be degraded.
  • Laminate flooring: This type of flooring’s thinness is an advantage to the radiant heating system as it allows the heat to penetrate and dissipate. In hydronic systems, the laminate may get permanently destroyed if the moisture escapes. So you should take precautions to protect the floor.
  • Sheet or Vinyl Flooring: it is quite an excellent choice for a radiant heating system but you should check the manufacturer’s instructions on how much heat it can handle.

Type of floors that should not have radiant heat systems

  • We all know that rubber melts coming to high heat. So using rubber floors for the radiant heating system is a big no no.
  • Heat can also loosen or dry out the glue or adhesive and take off the carpeting. The flooring system that requires glue or adhesive is a poorer choice for radiant flooring system.
  • As concrete floors are relatively homogeneous, it is also a more inferior choice. However, it can be embedded in concrete floor slabs while subsequent top floor covers are added.

Does radiant heating system ruin hardwood floors?

If you use the wrong wood flooring, an improper installation method or the lack of proper humidity can be catastrophic. Apart from the conventional heating systems that will emit heat from the base of walls in the floors, the radiant system transfers heat directly up and under through the wood floorings at 80 degrees or higher temperatures. There is also another factor, like the comparison between electric vs gas boiler radiant heat, but this is whole another story. Let’s dive in the main topic.

How you should install radiant heating system over hardwood floors

  • You can install the radiant heat tubing directly under the wood subfloor below. This is the most famous installation method.
  • Another method is installing the hydronic radiant system within a plywood underlayment system directly over the existing concrete slab or over the existing wood subfloor.
  • The last method is installing the radiant system tubing within the concrete slab while you pour over the concrete.

Moisture testing

This is the most crucial factor if you have poured concrete slabs as they can contain a lot of water and should be allowed to cure for 60 days at least to 90 days before you can install any flooring. This applies to all concrete slabs, whether it is old or new. Here is an easy way to check the moisture. You should start by taping the edges of 3 foot by 3 foot square pieces of 4-7 mil plastic sheets in different areas of the slabs. Then you have to wait for 48 hours, and then you can look to see if there is any moisture building up under the sheets. If there are signs of moisture, you should wait a bit more to install the radiant heating systems.

Here we Write a Review best machine for cleaning tile floors you can check the post.

FAQs About Radiant floor heating

What boiler is best for underfloor heating?

Answer: There is no such thing as the best boiler for underfloor heating as underfloor heating functions quite good with all types of modern condensing boilers.

What size of boiler do I need for in floor heat?

Answer: BTU requirements will tell you that you tend to need about 50 BTU per sq. foot in winter and 35 BTU per sq. foot in a moderate climate, and 20 BTU per sq. foot in summer.

Can you put radiant heat under wood floors?

Answer: Yes, you can. But be sure to check the moisture level before you install it.

What kind of fuel do I need to use for my heating system?

Answer: It does not matter what type of fuel you are using as long as it meets the BTU requirements, it is okay. But we highly recommend you to use propane or natural gas.

How frequent should I check my glycol system?

Answer: You should check it at least once a year so that you can ensure the pH levels have not risen or dropped below the recommended levels.

Can I air condition my home with radiant heating system?

Answer: It is highly advised not to do so simultaneously. The lower temperature will pull the heat from the air, and later it will be carried away in the tubing below the floor.

Radiant Floor Heating Buyer’s Guide: 

You will buy a radiant heating system to keep your home and yourself warm in the dead of winter. People who feel cold frequently are prone to buy a radiant heating system more because cold runs a shiver down your spine.

So here is a buying guide for you that covers what you should look for in a radiant heating system and what you shouldn’t. 

Here’s what:

There are plenty of radiant heating systems available in the market. Some of them are as follows:

  • Electric sub-floor heating: this type of heating system requires a network of electric cables for heating a floor. Brute heating is comparatively more expensive than geothermal heating, and most builders do not rely on large-scale installations. Somehow, electric heating is easier than geothermal, which makes it the perfect solution for a little upgrade.
  • Fluid Sub-Floor Heating: it is the most commonly installed heating system and preferred by all. And it is operated by the water-to-water geothermal heat pump. You can also install it with tankless water heaters as it has many benefits. It is really a perfect choice as a geothermal retrofit is way too expensive.
  • Water-to-water Geothermal Heat Pump: This one is eco-friendly and has an energy-efficient HVAC solution. It is one of the best ways to power up a radiant heating system.
  • Buffer Tank: Unless you use an electric tankless water heater, you might want to use a buffer tank as it is very useful. It can store heated water. For this the geothermal unit won’t have to operate itself every time you are warming the floors.

Some features you might consider before buying:

  • PEX tubing: Sometimes, the sub-floor heating that needs fluid often circulates a metal widely known as PEX tubing. It is simply a polyethylene pie that is flexible, long-lasting, and easy to install. It is quite cheap.
  • Electrical Heating technology: The sub-floor heaters utilize a roll-out mat type of insulated thing. Many types are glued down, and some are permanently connected to the floor. So you might consider electrical heating technology.


We have selected these top 10 radiant heating systems for your home that will comfy you warmly. These are some best boiler for radiant heating systems that customers have always been satisfied with.

We have tried our best to give you inner insights into each product and the pros and cons. 

Finding an excellent radiant heating system might be challenging, but we hope we have made the job easy to incorporate all these amazing ones in the list. Let us know your happy experiences with these beauties. 

See Also:

Sophie Turner
Home Accessories Tips