How big a heat pump do you need? A simple Rule of Thumb.

As ever more people become interested in installing Air Source Heat Pumps, one of the continuing anxieties is around the size of heat pump required.

In this video I explain that a simple rule of thumb can give an answer within about 10% based just on the previous year's gas usage (in kWh).

The rule?

Heat Pump Size (in kW) = [Annual Gas Usage (in kWh)]/ 2900

This applies to the UK south of Manchester. It's very simple and in the video I explain how it works.

You can download the Powerpoint slides and get more information about degree days from my blog at:

https://protonsforbreakfast.wordpress...