FAQ Floor Heating Skip to content

FAQ Floor Heating

Frequently Asked Questions
Does floor heating heat only the floor?

No! One of the greatest benefits of under floor heating is not only does it heat the floor, but it can be the primary source of heating for the whole room. Floor heating produces radiant heat rising up from the floor – meaning it warms the occupied areas of the room, rather than wastefully heating the upper areas. This means that your home can most efficiently be heated from bottom to top using Coldbuster floor heating.

Some of our clients want floor heating to heat the floor only because although they have alternative heating already, they just want that amazing feeling of walking barefoot on a warm floor in the middle of winter! If you only want to heat the floor and not the entire room, let us know and we will tailor the quote to your needs.

Floor heating seems complicated, how do I figure out which floor heating is best for my project?

Floor heating is really simple, and we are happy provide you with all the information you could possibly need. You can use the Enquire Now, which gives you many options for your floor heating kit. Use this tool to find your ideal heater and receive a FREE quote with heating plan, instructions, and quote for your project. Planning your floor heating is made easy when using our free quote tool, as we design and plan the heating for your project.

Send us your floor plan through our FREE quote option or send it to sales@hdreno.com.au and we will send you a quote and a free customised plan for your project.

Floor heating is so expensive, how do I get an idea of costs?
Capital costs for floor heating are lower than most people believe. You can heat a small bathroom with Coldbuster products for as little as $250 – $300 dollars. Running costs are also not as high as people assume. The products have been developed to be far more efficient than they used to be. Coldbuster floor heaters use the minimum required output to sufficiently heat the entire room from the floor up. Programmable thermostats ensure highly efficient usage as they turn on as late as possible to provide you with the desired temperature at the desired time, they have completely customisable schedules and duty cycle (turn off when desired temperature is reached and turn back on to maintain desired temperature when necessary).
How do electric floor heating and hydronic heating really compare?

Generally hydronic is used for new builds as it is installed into the slab while electric can be installed to any room at the time you are adding new flooring.

Capital costs and labour costs are far lower for electric floor heating. Electric floor heating can be controlled room-by-room and is faster at reaching the desired temperature.

Do I have to heat under the furniture?

Our advice is always to heat under all furniture except where you are confident that the furniture will not move in the long-term. We would not want the situation where in 5- or 10-years’ time the furniture is moved and there is a large cold space with no floor heating. If you’re certain the furniture will be permanently placed, then to save money you can certainly choose not to heat underneath. By not going under, in most cases, the heater size will not change drastically. If the heater size does change, the price differential is as small as a couple of tens of dollars.

What is the difference between In-Slab and In-Screed heating?

In slab heating is usually used for polished concrete floor finishes. In slab heating is where the heating cable is affixed to the reinforcement rods BEFORE cement is poured. Your flooring is then laid on top.

In screed heating can be used where a screed layer is put in below the flooring. For dry areas, in screed heating is attached to fixing rails, which are affixed to the top of the concrete slab/floor base.

For wet areas (bathrooms and laundry typically), in screed heating can be installed using hot glue or cloth tape. In either case, the screed is then laid on top of the heater, followed by your floor type.

Does a programmable thermostat save me money?

Programmable thermostats are our top line products. Our models are very smart and within a few days will calculate each room’s lead time requirements to maximise efficiency and save heating costs. They work backwards to figure out the latest time to turn on to get to your desired temperature at your requested time.

Can I turn some floor heated areas on while others are off? And can the times the floor heating come on be automated?

Heated areas with different thermostats (zones) can be controlled separately from each other. We recommend separate zoning for areas that will be used at different times.

For example, if a living and dining room are next to each other and will generally be used at the same time then it’s better to heat them together. If a bedroom is also next to the living and dining room but won’t be used at the same time, it is best to heat it as a separate zone, so you don’t have to pay to run the bedroom while you use the living and dining room.

With our programmable thermostats, custom schedules can be made specifically for each zone. Therefore, you can program the living and dining room to be on during the day when people are home and off when people are sleeping. While the bedroom can be programmed to be off during the day when people aren’t in their bedrooms but on at night when you usually go to bed.

With the MWD Wi Fi thermostat you can also control the heating from your phone while away from home.

How long will my heater take to warm up?

Warm up times can vary widely as each room is different (insulation/ventilation, window area, aspect, size, floor substrate, depth of element below floor surface, ceiling height, etc).

Our very general rule of thumb of approximate lead time to run heat to get to desired temperature is conservatively:

  • Under tile/timber/carpet: 1 hour
  • In-screed: 2 hours
  • In-slab: 3 hours


To reduce energy consumption, our thermostat models are very smart and within a few days will calculate each room’s lead time requirements to maximise efficiency and save heating costs. They work backwards to figure out the latest time to turn on to get to your desired temperature at your requested time.

Blog posts