- Area
- County Down
- Postcode district
- BT23
- Nation
- Northern Ireland
- Guide price
- Priced after survey
- Survey
- Free for installation enquiries
Heat loss survey in Comber: what to expect
In Comber, as anywhere in the UK, the heat pumps that perform well are the ones designed around low flow temperatures and sized from a proper heat loss calculation.
The survey in Comber includes a check of where the outdoor unit could sit and how its sound would reach neighbours. Houses in Comber built in different eras can need very different heat pump sizes, which is why each is calculated room by room.
Every heat pump we quote starts with a room-by-room heat loss survey, free with installation enquiries and also available as a stand-alone report.
- Landlords comparing properties before deciding where to switch first
- Homes with an existing heat pump that seems undersized or expensive to run
- Homeowners planning insulation or building work who want to know the effect on heat demand
What's included
- Outdoor unit siting options and noise check
- Recommended heat pump size and design flow temperature
- Radiator schedule with any upgrades needed for each room
- Hot water cylinder sizing for your household
- Electrical supply and network operator notes
For Comber homes with extensions or loft conversions, each part of the house is assessed on its own construction.
Grants and rules for heat pumps in Northern Ireland
Northern Ireland does not have a dedicated heat pump grant for homeowners at present, and the Boiler Upgrade Scheme does not apply here. Heat pumps have sometimes been funded through the Northern Ireland Sustainable Energy Programme, so it is worth checking what is open when you enquire about a home in Comber.
There is no VAT on installing a heat pump in Northern Ireland until 31 March 2027, the same as in Great Britain. Planning and building control here follow Northern Ireland's own rules, so the survey checks the unit position against them.
Heat loss survey costs around Comber
These are guide prices for County Down, installed and including VAT. Your final price is fixed in a written quote after the survey and depends on the heat loss of the house, the radiators that need changing and where the unit goes.
| Survey | Guide price |
|---|---|
| Home survey and heat loss calculation with an installation quote | Free |
| Stand-alone heat loss survey and report | £150–£390 |
Inc VAT. A stand-alone report is for homeowners who want the design without an installation quote.
How long is the heating season in Comber?
Comber sees roughly 7 hours 15 minutes of daylight in December and 17 hours 16 minutes in June. With a longer heating season than the south, the gains from low flow temperatures and good controls add up over the year.
From survey to switch-on in Comber
- Tell us about your home: postcode, property type and current heating.
- We book a survey in Comber; the surveyor measures rooms, windows and radiators and looks at cylinder space.
- The design and quote arrive in writing, including radiator changes and the outdoor unit position.
- On installation days the old system is removed and the new one fitted and filled.
- We commission the heat pump, show you the controls and register the installation.
Heat loss surveys in Comber: questions
Where would the outdoor unit go on a Comber house?
Usually at the side or rear, on a level base with space around it for airflow and servicing, away from bedroom windows where possible. The surveyor checks positions at your Comber home.
Do I need new radiators for a heat pump in Comber?
Often some, not all. Heat pumps run best at lower water temperatures, so rooms with small radiators may need larger ones. The survey of your Comber home gives a room-by-room list.
How long does installation take in Comber?
Most installations take 2–4 days on site. Jobs with several radiator changes or new pipework take longer, and your quote for a Comber home states the expected time.
Why can't you size the heat pump from my boiler?
Boilers are often much larger than a home's real heat loss, because they are sized for fast hot water and quick warm-ups. Matching a heat pump to the boiler's output usually means an oversized unit that costs more and switches on and off too often. A room-by-room calculation finds the actual heat demand, which is what the heat pump needs to meet.
How long does a heat loss survey take?
A typical survey takes 1–3 hours on site, depending on the size and complexity of the home. Larger or older houses with mixed construction, extensions or many rooms take longer. The calculations and design are completed afterwards, and the results are included in your quote or stand-alone report.

