Heat load surveys and system design in Portsmouth
Hot spells reach the South East early, which makes spring the easiest time to arrange an installation. Every Portsmouth quote starts with a room-by-room survey rather than a guess from floor area.
No two rooms in Portsmouth gain or lose heat in quite the same way, which is exactly why rooms are measured before sizing. Portsmouth is about 15 miles from Southampton and falls within our Hampshire coverage. That includes the PO5 postcode district.
Prices in Portsmouth
In South East England, our guide range for heat load surveys and system design is £495–£1,495 for a standalone design pack, including VAT. Prices here sit above the national middle, reflecting South East England labour rates and parking and access costs. The design pack price depends mainly on the number of rooms and whether full drawings and equipment schedules are needed. Typical Design pack work (drawings and schedules for one home) lands around £495–£945 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
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
A survey in Portsmouth usually takes one to two hours. We measure the rooms, check the walls and the consumer unit, agree the outdoor unit position with you and photograph the pipe routes. We book surveys in Portsmouth at a time that suits you, including early evenings by arrangement, and send the written quote afterwards.
What is included
Included as standard in Portsmouth:
- Written proposal with options
- Equipment selection and outdoor unit sizing
- Noise check to the nearest neighbour
- Room-by-room heat gain and heat loss
- Electrical load for your electrician
Nearby
We also cover Gosport (2 miles), Fareham (5 miles) and Havant (6 miles). See all services in Portsmouth or heat load surveys and system design across Hampshire.

