Heat load surveys and system design in Merthyr Tydfil
Every Merthyr Tydfil quote starts with a room-by-room survey rather than a guess from floor area. Wet South Wales winters make a heat pump's quiet, even heating and dehumidifying mode useful well beyond summer.
For self-builds and extensions in Merthyr Tydfil, a standalone design pack can go straight to your builder. We cover Merthyr Tydfil as part of Mid Glamorgan, roughly 19 miles from Bridgend. We cover CF47 and the streets around them.
Prices in Merthyr Tydfil
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. 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 Merthyr Tydfil 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. On a survey in Merthyr Tydfil 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
Every job in Merthyr Tydfil includes:
- Pipe and drain routes
- Equipment selection and outdoor unit sizing
- Room-by-room heat gain and heat loss
- Noise check to the nearest neighbour
- Written proposal with options
Nearby
If you are just outside Merthyr Tydfil, we also work in Aberdare (4 miles), Tredegar (6 miles) and Rhondda (7 miles). See all services in Merthyr Tydfil or heat load surveys and system design across Mid Glamorgan.