Heat load surveys and system design in Eastleigh
Summers in the South East are among the warmest in the country, so cooling often comes first, with efficient winter heating as a bonus. Every Eastleigh quote starts with a room-by-room survey rather than a guess from floor area.
For self-builds and extensions in Eastleigh, a standalone design pack can go straight to your builder. Our Hampshire coverage takes in Eastleigh, about 5 miles from Southampton. Postcode districts we cover here include SO50.
Prices in Eastleigh
For Eastleigh, expect roughly £495 to £1,495 for a standalone design pack, VAT included, adjusted for typical South East England rates. 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. For reference, the Design pack option in Eastleigh (drawings and schedules for one home) usually comes to about £495–£945.
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
A survey in Eastleigh 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 Eastleigh at a time that suits you, including early evenings by arrangement, and send the written quote afterwards.
What is included
Here is what is included on every job in Eastleigh:
- Equipment selection and outdoor unit sizing
- Written proposal with options
- Electrical load for your electrician
- Room-by-room heat gain and heat loss
- Pipe and drain routes
Nearby
Neighbouring places we cover include Southampton (5 miles), Winchester (7 miles) and Totton (7 miles). See all services in Eastleigh or heat load surveys and system design across Hampshire.