Heat load surveys and system design in Penarth
Humid summer spells in South Wales make dehumidifying and cooling equally welcome. For self-builds and extensions in Penarth, a standalone design pack can go straight to your builder.
Every Penarth quote starts with a room-by-room survey rather than a guess from floor area. Our South Glamorgan coverage takes in Penarth, about 3 miles from Cardiff. Homes in CF64 are all within our coverage.
Prices in Penarth
Budget around £365–£1,145 for a standalone design pack including VAT for heat load surveys and system design in and around Penarth. That sits a little below the UK middle, reflecting typical South and Mid Wales labour rates. Larger homes, more zones and full drawing sets for a builder are what move a design pack towards the upper figure. For reference, the Design pack option in Penarth (drawings and schedules for one home) usually comes to about £365–£745.
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
In Wales, outdoor units of up to 1.5 m³ that meet MCS 020a noise limits are usually permitted development on houses; listed buildings need consent, and in conservation areas a unit cannot go on a wall or roof 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. Surveys in Penarth cover heat gain, pipe routes, electrics, access and noise to the nearest neighbour, so surprises on the day are rare.
What is included
Included as standard in Penarth:
- Electrical load for your electrician
- Noise check to the nearest neighbour
- Room-by-room heat gain and heat loss
- Written proposal with options
- Pipe and drain routes
Nearby
Neighbouring places we cover include Dinas Powys (2 miles), Cardiff (3 miles) and Barry (5 miles). See all services in Penarth or heat load surveys and system design across South Glamorgan.

