- Area
- Mid Glamorgan
- Postcode district
- CF47
- Nation
- Wales
- Guide price
- Priced after survey
- Survey
- Free for installation enquiries
What to know about heat loss surveys in Merthyr Tydfil
Most homes can run on a heat pump if the system is designed properly, and Merthyr Tydfil is no different. The key is matching the heat pump and radiators to the home's heat loss.
The survey in Merthyr Tydfil includes a check of where the outdoor unit could sit and how its sound would reach neighbours. For Merthyr Tydfil homes with extensions or loft conversions, each part of the house is assessed on its own construction.
Every heat pump we quote starts with a room-by-room heat loss survey, free with installation enquiries and also available as a stand-alone report.
- Self-builders and architects who need emitter and system sizes early
- Homeowners planning insulation or building work who want to know the effect on heat demand
- Homes with an existing heat pump that seems undersized or expensive to run
What's included
- Recommended heat pump size and design flow temperature
- Room-by-room heat loss calculation using the MCS method
- Radiator schedule with any upgrades needed for each room
- Outdoor unit siting options and noise check
- Written results in your quote, or a stand-alone report if you order one
A surveyor visits your Merthyr Tydfil home to measure each room, window and wall before any heat pump is sized.
Grants and rules for heat pumps in Wales
In Wales the Boiler Upgrade Scheme gives £7,500 towards an air source heat pump (£9,000 if it replaces oil or LPG, from 21 July 2026 to 31 March 2027; £2,500 for air-to-air). The MCS-certified installer named in your quote applies to Ofgem for you, and the grant comes off your Merthyr Tydfil quote.
There is no VAT on installing a heat pump anywhere in the UK, Wales included, until 31 March 2027. Planning rules for heat pumps in Wales are set by the Welsh Government and differ from England's, so the surveyor checks the unit position against them.
Heat loss survey prices in Merthyr Tydfil
Guide prices for Merthyr Tydfil and the rest of Mid Glamorgan are shown below, installed and inc VAT. We publish ranges rather than a single figure because design details move the price, and the written quote after survey fixes it.
| Survey | Guide price |
|---|---|
| Home survey and heat loss calculation with an installation quote | Free |
| Stand-alone heat loss survey and report | £150–£400 |
Inc VAT. A stand-alone report is for homeowners who want the design without an installation quote.
Designing for Merthyr Tydfil's winters
On the shortest day Merthyr Tydfil gets about 7 hours 47 minutes of daylight, with the noon sun around 15° up. The heating season runs from autumn into spring, so a heat pump that is sized correctly and set up with weather compensation does most of its work in steady, cool conditions.
How installation works in Merthyr Tydfil
- Send your postcode and a few details, or use the guide price tool.
- A surveyor visits your Merthyr Tydfil home, measures every room and checks where the outdoor unit can go.
- You receive a heat loss design and a fixed written quote, with any grant shown where it applies.
- Installers fit the unit, cylinder and any radiator changes, typically over 2–4 days on site.
- The system is commissioned, set up with weather compensation and handed over with the paperwork.
Heat loss surveys in Merthyr Tydfil: questions
How long does a heat pump survey take in Merthyr Tydfil?
A home survey in Merthyr Tydfil usually takes one to two hours. The surveyor measures every heated room, checks windows, walls and radiators, and looks at where the outdoor unit and cylinder can go.
How long does installation take in Merthyr Tydfil?
Most installations take 2–4 days on site. Jobs with several radiator changes or new pipework take longer, and your quote for a Merthyr Tydfil home states the expected time.
Do I need new radiators for a heat pump in Merthyr Tydfil?
Often some, not all. Heat pumps run best at lower water temperatures, so rooms with small radiators may need larger ones. The survey of your Merthyr Tydfil home gives a room-by-room list.
Why can't you size the heat pump from my boiler?
Boilers are often much larger than a home's real heat loss, because they are sized for fast hot water and quick warm-ups. Matching a heat pump to the boiler's output usually means an oversized unit that costs more and switches on and off too often. A room-by-room calculation finds the actual heat demand, which is what the heat pump needs to meet.
Can I use the heat loss report to get other quotes?
Yes. A stand-alone heat loss report is yours to use, including sharing it with other installers so their quotes are based on the same figures. Comparing quotes like for like makes it easier to see differences in equipment, radiator upgrades and workmanship terms. The report states the assumptions used wherever construction could not be confirmed.