Heat load surveys and system design in Harrow
London's dense streets hold heat overnight, so top-floor flats and loft rooms often stay warm long after sunset. No two rooms in Harrow gain or lose heat in quite the same way, which is exactly why rooms are measured before sizing.
For self-builds and extensions in Harrow, a standalone design pack can go straight to your builder. Harrow sits around 10 miles from central London, inside our London area. Coverage includes HA2.
Prices in Harrow
In London, our guide range for heat load surveys and system design is £495–£1,645 for a standalone design pack, including VAT. London is one of the dearer parts of the UK for trades, which shows in the range. Larger homes, more zones and full drawing sets for a builder are what move a design pack towards the upper figure. For reference, the Design pack option in Harrow (drawings and schedules for one home) usually comes to about £495–£1,045.
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
In England, most houses can have an outdoor unit under permitted development if it is no larger than 1.5 m³, meets the MCS 020(a) noise limit of 37 dB(A) at the nearest neighbour's window, and there are no more than two on a detached house or one on other houses. Listed buildings need consent.
The survey
On a survey in Harrow the engineer looks at room size, glazing, the route for pipes and drains, the electrics and where the outdoor unit can sit quietly, then the written quote follows. We book surveys in Harrow at a time that suits you, including early evenings by arrangement, and send the written quote afterwards.
What is included
Included as standard in Harrow:
- Written proposal with options
- Electrical load for your electrician
- Equipment selection and outdoor unit sizing
- Room-by-room heat gain and heat loss
- Noise check to the nearest neighbour
Nearby
We also cover Wembley (2 miles), Northolt (3 miles) and Greenford (4 miles). See all services in Harrow or heat load surveys and system design across London.