Heat load surveys and system design in Tenby
For self-builds and extensions in Tenby, a standalone design pack can go straight to your builder. Humid summer spells in South Wales make dehumidifying and cooling equally welcome.
Every Tenby quote starts with a room-by-room survey rather than a guess from floor area. Tenby sits around 21 miles from Carmarthen, inside our Dyfed area. Homes in SA70 are all within our coverage.
Prices in Tenby
Our South and Mid Wales guide price for heat load surveys and system design is £365–£1,145 for a standalone design pack, VAT included. It is a touch below the UK middle, as trade rates in South and Mid Wales tend to be. 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 £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
Wales removed its old 3 m boundary rule on 1 June 2026, so most houses in Tenby 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
At the survey we look at how each room is used, where the sun hits it and how the pipes can reach the outside wall, then put it all in a written quote. A survey in Tenby 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
Every job in Tenby includes:
- Written proposal with options
- Noise check to the nearest neighbour
- Pipe and drain routes
- Equipment selection and outdoor unit sizing
- Electrical load for your electrician
Nearby
Nearby, we also cover Pembroke Dock (10 miles), Milford Haven (14 miles) and Haverfordwest (14 miles). See all services in Tenby or heat load surveys and system design across Dyfed.