What Size Radiator Do I Need for My Bathroom?

How do you know what size radiator you need?

What kind of radiator is necessary to heat your room is not dependent on the size, but on it’s heat output, measured in BTU (British Thermal Unit). A BTU is defined as the amount of energy necessary to heat up a pound of water by one degree Fahrenheit. Often, larger radiators do have larger heat outputs with higher BTUs, but not always. When choosing a radiator you need to match the heating requirements of your room, with the BTU of your chosen radiator. A plumber or electrician can work out the exact BTU for your room, but in most cases, an estimate is suitable.

What affects the BTU requirements?

There are two factors that affect the BTU. Firstly, the temperature you wish to keep the room at. Secondly, the rate of heat loss from the room. One of the biggest factors that will affect this is the size of the room, but other features are important, such as what is above and below the room, what type of windows your bathroom has, the kind of walls and whether they are outside or inside walls. All of these features give guidance on what sort of heat loss the room will experience and what BTU will be required to maintain the desired temperature.

UK Radiators' BTU Calculator

If you want to work out what kind of radiator you need to heat your bathroom, you don’t need to worry about doing a lot of calculations. We make it simple with our BTU calculator. All you need is the measurements of your room. Put them into the calculator, then select from each drop-down menu the answer that is right for your bathroom, regarding the walls, windows and other features. Once you’ve made your selection, you will be offered two options for BTU, depending on what temperature you are most comfortable at. From there you can easily view suitable models that meet your requirements and select the one you like the best, safe in the knowledge that it will heat your bathroom perfectly. At UK Radiators, we offer a huge range of designer radiators in different styles, that are available for fast UK delivery. If you’re still not sure about what radiator would be suitable for your property, contact us for more information on 0333 006 8227 or email sales@ukradiators.com.