What Size Heat Pump Do I Need? A Rule of Thumb

Friends, a few weeks ago I wrote four articles about using the idea of Heating Degree Days to make simple calculations about heat losses from one’s home.

• Article 1 was an introduction to the idea of Heating Degree Days as a general measure of the heating demand from a dwelling.
• Article 2 explained how and why the idea of Heating Degree Days works.
• Article 3 looked at the variability of Heating Degree Days across the UK, at locations around London, and from year to year.
• Article 4 introduced some rules of thumb for estimating the Heat Transfer Coefficient for a dwelling and the size of heat pump it requires.

The Rule of Thumb for Heat Pump Sizing is dramatically simple:

The video above is about using these ‘Rules of Thumb’.

I feel these rules could be helpful to both heat pump installers and their clients.

The Powerpoint slides (.pptx) I use in the presentation can be found here.