2026 · Heat pumps · 17 min read
Why heat pump surveys disagree
What a good heat-loss survey looks like, and the red flags in a bad one.
04 · Heat
Heat pumps, the survey decides everything
Not a like-for-like boiler swap. The heat-loss survey, the radiator sizing and the flow temperature determine whether the install ends up comfortable and efficient.
Knowledge base
Guides on heat pumps
Reference pages on the kit, the install process and the questions worth asking before you book.
01
Heat loss survey
The single most important document
02
ASHP vs GSHP
When ground source justifies the cost
03
Radiator sizing
Why existing rads are usually too small
04
Flow temperature
The number that decides comfort and efficiency
05
Noise
What the figures mean and where to place the unit
06
BUS grant
Eligibility, application, accredited installers
Calculators
Numbers for heat pumps
Built for the questions that crop up while reading a quote. Each prints the working it does.
Articles
Decision-led pieces
2026 · Heat pumps · 10 min read
The radiator question, properly answered
When existing radiators stay and when they need to grow.
2026 · Heat pumps · 8 min read
BUS grant in 2026: what changed
Recent changes to the £7,500 scheme.