Heat load surveys and system design in Harlow
The East of England is one of the sunniest and driest parts of the UK, which makes glazed rooms and lofts hard to keep cool. No two rooms in Harlow gain or lose heat in quite the same way, which is exactly why rooms are measured before sizing.
Every Harlow quote starts with a room-by-room survey rather than a guess from floor area. Harlow lies roughly 31 miles from Southend-on-Sea, and we cover it as part of Essex. That includes the CM17 and CM18 postcode districts.
Prices in Harlow
Guide prices around Harlow run from £445 to £1,395 for a standalone design pack including VAT. The East of England is one of the dearer parts of the UK for trades, which shows in the range. A standalone design pack is priced on the size of the home, the number of rooms and how much drawing work your builder or architect needs. Typical Design pack work (drawings and schedules for one home) lands around £445–£895 in this area.
Home survey
Free with an installation quote.
Design pack
Drawings and schedules for one home.
Self-build pack
Whole-house design for a new build.
Planning and permissions
Since 29 May 2025, England's permitted development rules allow larger outdoor units (up to 1.5 m³) and no longer require a 1 m gap to the boundary, provided the MCS 020(a) noise check is met. Listed buildings and pitched-roof installs still need permission.
The survey
At the survey we look at how each room is used, where the sun hits it and how the pipes can reach the outside wall, then put it all in a written quote. We book surveys in Harlow at a time that suits you, including early evenings by arrangement, and send the written quote afterwards.
What is included
Every job in Harlow includes:
- Written proposal with options
- Room-by-room heat gain and heat loss
- Electrical load for your electrician
- Noise check to the nearest neighbour
- Pipe and drain routes
Nearby
Neighbouring places we cover include Hoddesdon (5 miles), Bishops Stortford (7 miles) and Waltham Abbey (8 miles). See all services in Harlow or heat load surveys and system design across Essex.