Ever wondered how to size your boiler? In this video Adam explains a few cheats to help you on your way to choosing the correct set up.
Watch This First Before Attempting to Size Your Heat Pump or Boiler
February 7, 2022 – 1 minute read

See how much you could save with a heat pump
Get a free, personalised estimate in seconds

Geek out some more

Ground Source Heat Pumps: What They Are and Why We Rarely Install Them
Ground source heat pumps extract heat from stable ground temperatures for high efficiency, but high installation costs and land requirements mean they rarely make sense for most UK homes.
Read more
As Seen on BBC News
Energy bills and the crisis explained: Heat Geek founder Adam speaks to BBC News on practical steps UK households can take to cut heating costs.
Read more
What To Expect From Heat Geek
An overview of what Heat Geek does, how the network works, and what homeowners can expect from the UK's leading certified heat pump specialists.
Read more
Worcester Bosch Boiler Review – Greenstar SI Compact, Combi.
The Worcester Bosch Greenstar Si Compact comes in 25Si and 30Si variants — both 24kW output, but differing in hot water flow rate and price.
Read more
How to measure your renewable heating inc solar thermal
How to accurately measure the efficiency of a renewable heating system including solar thermal, using Open Energy Monitor hardware and real-world installation data.
Read more
Do We Really Need DT20?
DT20 is a common heating design assumption, but it's not always necessary. Challenging it can unlock better heat pump performance and lower flow temperatures.
Read moreJoin the geeks
Join thousands of homeowners and installers getting our latest updates, guides, and news on heat pumps.