Electric underfloor heating sizing and quotation tool

Electricity is used the world over for heating homes and is our most common energy source. As the world’s supply of oil and gas becomes depleted, many of the world’s countries will be
searching for alternative, renewable and environmentally friendly sources of energy such as, Wind, solar, nuclear, and hydro power, we are no different and it is clear in the UK that credible solutions to get us off the fossil fuel habit are required.

Using electricity for heating your home is becoming more and more popular. Once you have made the choice to use electricity to heat your home, your choice of heating appliances is numerous. Electric underfloor heating is becoming the natural choice for many, for obvious reasons.

Electric underfloor heating cables are economical and easy to install and incur no yearly maintenance costs, it is invisible, silent in operation, gives you freedom to place furniture where you like as there is no appliances to be mounted on your wall, our electric underfloor heating thermostat controller monitors both the floor and air temperature to give you maximum control over your environment.

Using the large surface area of your floor to heat your room allows the low temperature radiant heat to provide evenly distributed warmth giving much higher levels of comfort when compared to other more traditional methods.

Using this method the thermal output is 2-3 °C lower than using a convection based system where the heat will collect close to the ceiling thus saving 5-10% of the running cost while not producing any drafts or cold spots in the room.

Our products are suitable for renovation projects as well as new building construction to heat your home completely or in combination with other heating sources.

Key advantages are flexibility, advanced control and easy integration with other systems.

Our electric underfloor heating product range consists of 100 and 150 W/m2 mats with coverage of 1-12m2 and loose cables with outputs from 300-3300W, these products are complimented with our thermostat controller which offers temperature and timer control of your system.

The 100 W/m² mat can be installed on any type of levelled and stable sub floor, and is recommended to be used under parquet or other wooden floor coverings.

Our 150 W/m² must be installed on a non-combustible levelled and stable sub floor and is suitable for use with tiled or ceramic flooring.

Electric underfloor heating sizing and quotation tool

Measuring up - Step 1
Measuring up - Step 2
Measuring up - Step 3
Measuring up - Step 4
Output selector

How to Measure up

Electric underfloor heating sizing and quotation tool

Step 1. - Calculating Total Area

Measure the length and width of your room, In this example the bathroom is 3m x 4m giving a total of 12m2 .

Total Area

Step 2. - Calculating Unheated Areas

Electric underfloor heating sizing and quotation tool

When installing underfloor heating you have to ensure that the heat can escape into the room. When calculating the heated area we deduct any fixed furniture such as kitchen cupboards. In this example we will deduct the bath, basin, shower tray toilet and cupboard, the unheated area.

Total Unheated Area

Step 3. - Calculating heated Areas

Electric underfloor heating sizing and quotation tool

The heated area is calculated by taking the unheated areas away
from the total area. In this case:

Total heated Area

Step 4. - Product Selection and Sizing

Electric underfloor heating sizing and quotation tool

Mats are selected at 90% of the total heated area allowing room for the required spacing around the perimeter of the room and between the mat on its return.

In this example the area is 7.1m2 for mat installation, rounded down to the nearest kit size of 7m2.

Insulation boards - 110% of the total heated area requirement due to the wastage when cutting.

Product Selection

The application guide below shows the typical product choice for differing rooms and locations.

Electric underfloor heating sizing and quotation tool

HEAT MAT SELECTION PROGRAM

The floor type and covering to you are planning to use will affect the choice of heating output from your underfloor heating system you can use, to help you choose the correct output for your application we have created a simple tool to assist you.

The 100 W/m² mat can be installed on any type of levelled and stable sub floor, and is recommended to be used under parquet or other wooden floor coverings.

Our 150 W/m² must be installed on a non-combustible levelled and stable sub floor and is suitable for use with tiled or ceramic flooring.

You will also find the typical outputs for various rooms in the table below.