Boiler size is an important practical consideration. A boiler too large may lead to larger bills, while a boiler too small will struggle to warm your home. Boiler size doesnít refer only to physical size, but also to power output. Although it can be difficult to choose the right boiler for your home, we at K and M Maintenance are boiler experts. As a result, we have produced this guide to choosing the right size boiler.

Amount of people

How much hot water your home will need can depend on the number of people in your home. More people naturally means more hot water will be required. As a result, a boiler with a larger power output may be necessary for a larger family.

The size of the home

Generally speaking, the smaller the home, the smaller boiler is required. A terraced house would probably require a smaller boiler than a large detached property. This is related to the number of radiators that the boiler is required to heat.

Is the house well insulated?

A home that is insulated may require less heat from the boiler. This is because the insulation allows the home to retain more of its heat, meaning the heating will be required less often. As a result, some homes may be able to downsize their boiler because of roof insulation, wall insulation, and double glazing.

Sizing guide:

Most combination boilers have three sizes. These are:

  • 24-27kw- Perfect for flats and small homes with less than 10 radiators and one bathroom.
  • 28-34kw- Perfect for a larger home with 3-4 bedrooms, 2 bathrooms and up to 15 radiators.
  • 35-42kw- Perfect for very large homes and hotels with multiple bathrooms and more than 20 radiators.

In summary

Boiler size will depend on a range of factors. The number of people, the size of the home, the number of radiators and the insulation, all have an effect. If you need more advice or guidance for choosing the right size boiler, contact us at K and M Maintenance today.