Topic 07 · 20 min

The calculations

Do the heat-loss, efficiency and running-cost sums on your own numbers, and see what an estimate is built from.

1. 1Heat loss, in plain words4 min · 3 questions · asks 1 about your home · Where does the number that everything else depends on come from?
2. 2COP and SCOP3 min · 3 questions · Which efficiency number should I actually believe?
3. 3What drives running cost3 min · 3 questions · So will it be cheaper than my boiler or not?
4. 4Your running-cost estimate4 min · 3 questions · asks 8 about your home · What would one cost to run in my home?
5. 5What an estimate is not3 min · 3 questions · Can I hold anyone to that number?
6. Learning checkOpens after the 5 remaining lessons · 80% to pass · credits £35+£35