BTU Calculator

Use our easy interactive BTU calculator to find the watts required to best heat your room using our range of electric radiators.

BTU Calculator Haverland’s easy to use, interactive BTU Calculator is designed to help installers determine the heating requirements of the projects on which they work, whether domestic or commercial. Once it has computed the heat requirement in British thermal units (BTU), the BTU Calculator can then convert the heat required figure to Watts to enable the installer to determine the electric radiator(s) they need in terms of heating output, type and number.

Calculating the amount of heat required to make a room comfortable involves the BTU Calculator computing the cubic volume of the room by multiplying the height, width, and length. The BTU Calculator then applies further mathematical equations to determine the heat loss in the room before delivering a precise calculation of what is required to heat the room efficiently and comfortably.

In other words, the BTU Calculator will tell the installer how many radiators of what size and type are needed to heat the room to a comfortable temperature at the lowest possible fuel cost.

Specifying the most appropriate radiator(s) for a given room using the BTU Calculator is the best way to reduce energy bills. After all, if it is too large, the radiator will increase bills unnecessarily; too small and too little heat will be generated to keep the room comfortable and, as a result, the radiator will be running constantly, wasting energy and increasing fuel bills. So, the BTU Calculator helps save energy.

The size of the room and what the room is used for will all determine how much heat (expressed in BTUs or Watts) the installer will need to keep it comfortable. A high heating requirement could require more than one radiator be fitted in the room. The BTU Calculator will help the installer work out the optimum radiator arrangement.

In short, the Haverland BTU Calculator enables the installer to establish the Watt/BTU outputs required for a particular room to ensure that it is heated comfortably and energy efficiently.

Room Width (Mtr)

Room Length (Mtr)

Room Height (Mtr)

For rooms 4m and above, please contact our technical support on:

Type of Room

Double Glazed