Heat load surveys and system design in Barry
South Wales summers can be warm and humid, and winters damp, so a reversible system earns its keep all year. For self-builds and extensions in Barry, a standalone design pack can go straight to your builder.
Every Barry quote starts with a room-by-room survey rather than a guess from floor area. We cover Barry as part of South Glamorgan, roughly 7 miles from Cardiff. We cover CF62 and the streets around them.
Prices in Barry
In South and Mid Wales, our guide range for heat load surveys and system design is £365–£1,145 for a standalone design pack, including VAT. It is a touch below the UK middle, as trade rates in South and Mid Wales tend to be. 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 £365–£745 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 1 June 2026, Welsh permitted development rules for outdoor units closely match England's: up to 1.5 m³, two units on a detached home, one on other homes, and MCS 020a noise compliance. Listed buildings need consent, and conservation areas have extra restrictions on units facing a road.
The survey
We book surveys in Barry at a time that suits you, including early evenings by arrangement, and send the written quote afterwards. A survey in Barry 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.
What is included
Included as standard in Barry:
- Electrical load for your electrician
- Equipment selection and outdoor unit sizing
- Written proposal with options
- Pipe and drain routes
- Room-by-room heat gain and heat loss
Nearby
We also cover Dinas Powys (4 miles), Penarth (5 miles) and Cardiff (7 miles). See all services in Barry or heat load surveys and system design across South Glamorgan.