Heat load surveys and system design in Caerphilly
Wet South Wales winters make a heat pump's quiet, even heating and dehumidifying mode useful well beyond summer. No two rooms in Caerphilly gain or lose heat in quite the same way, which is exactly why rooms are measured before sizing.
Every Caerphilly quote starts with a room-by-room survey rather than a guess from floor area. Our Mid Glamorgan coverage takes in Caerphilly, about 16 miles from Bridgend. Homes in CF83 are all within our coverage.
Prices in Caerphilly
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. Labour rates in South and Mid Wales keep this slightly under the national middle. 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
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
The free survey is where the real price is set: room measurements, pipe and drain routes, electrical checks and the outdoor unit position, all written into your quote. We book surveys in Caerphilly at a time that suits you, including early evenings by arrangement, and send the written quote afterwards.
What is included
Included with heat load surveys and system design in Caerphilly:
- Pipe and drain routes
- Noise check to the nearest neighbour
- Room-by-room heat gain and heat loss
- Equipment selection and outdoor unit sizing
- Electrical load for your electrician
Nearby
If you are just outside Caerphilly, we also work in Risca (6 miles), Pontypridd (6 miles) and Gelligaer (6 miles). See all services in Caerphilly or heat load surveys and system design across Mid Glamorgan.