Heat load surveys and system design in Gorseinon
For self-builds and extensions in Gorseinon, a standalone design pack can go straight to your builder. South Wales summers can be warm and humid, and winters damp, so a reversible system earns its keep all year.
No two rooms in Gorseinon gain or lose heat in quite the same way, which is exactly why rooms are measured before sizing. Gorseinon sits around 5 miles from Swansea, inside our West Glamorgan area. Postcode districts we cover here include SA4.
Prices in Gorseinon
Budget around £365–£1,145 for a standalone design pack including VAT for heat load surveys and system design in and around Gorseinon. It is a touch below the UK middle, as trade rates in South and Mid Wales tend to be. Larger homes, more zones and full drawing sets for a builder are what move a design pack towards the upper figure. As an example, the Design pack option (drawings and schedules for one home) would typically be £365–£745 here.
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
Wales removed its old 3 m boundary rule on 1 June 2026, so most houses in Gorseinon can now have an outdoor unit under permitted development if it meets the MCS 020a noise condition. Listed buildings still need consent, and conservation areas have extra restrictions.
The survey
We book surveys in Gorseinon at a time that suits you, including early evenings by arrangement, and send the written quote afterwards. On a survey in Gorseinon 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.
What is included
What a job in Gorseinon covers:
- Pipe and drain routes
- Written proposal with options
- Noise check to the nearest neighbour
- Electrical load for your electrician
- Equipment selection and outdoor unit sizing
Nearby
Close to Gorseinon, our coverage also includes Llanelli (5 miles), Swansea (5 miles) and Clydach (6 miles). See all services in Gorseinon or heat load surveys and system design across West Glamorgan.