If you are looking for an electric boiler to heat your wet underfloor heating system, you might be wondering how to choose the right size for your home. In this blog post, we will explain some of the factors that affect the kW size of an electric boiler for underfloor heating and give you some tips on how to make the best decision.
kW stands for kilowatt, which is a unit of power that measures how much energy a boiler can produce per hour. The kW size of a boiler determines how much heat it can provide to your underfloor heating system and how quickly it can warm up your home. A larger kW size means a more powerful boiler, but it also means higher energy consumption and costs.
We are often asked how many kW (Kilowatts) are needed for a wet underfloor heating system, to enable customers to work out the right underfloor heating calculations for your electric flow boiler.
Thankfully, there is there is a fairly simple formula for the most popular type of installation and layout. The most popular type of installation comprises a standard pipe diameter of 16mm and a standard spacing between the pipe runs of approximately 200mm.
Most underfloor heating installations are designed to operate at up to 55 degrees Celsius, but this may vary from floor to floor, depending on many factors such as type of floor, environment, etc.
The kW requirement calculation will also depend on the type of floor:
70w per m2 for timber suspended floors
100w per m2 for concrete floors
So, as an example, if you were looking to heat a wooden floor 6m x 4.5m (27m2) then you would simply multiply 27 (m2) x 70 (watts per m) = 1890. This is 1890w or 1.89kw.
Perhaps you have to provide heat for an underfloor system in a screeded concrete floor which is covering an overall area of 52m2. So in this case you would use the 100w per m2 calculation:
52 (m2) x 100 (watts per m) = 5200. This is 5200w or 5.2kW.
A suitable flow boiler for this application could be the Amptec U601 for example.
We stock the entire range of Trianco and Heatrae Sadia Amptec boilers and associated accessories at Electrical Deals Direct, all with free delivery.
Choosing the right kW size of an electric boiler for underfloor heating can be tricky, as it depends on many factors such as the size and type of your floor, the insulation level of your home, and your personal preferences. A general rule of thumb is to multiply the floor area by the heat output per square metre, but you should always consult a professional heating engineer before installing an electric boiler for underfloor heating. Electric boilers can be a great option for underfloor heating systems as they are easy to install, maintain, and operate, and they can provide consistent and comfortable heat throughout your home.
We hope this quick guide has been of some help, and should you need further advice, please call one of the team on 01934 253600 or drop us a line at sales@electricaldealsdirect.co.uk
