- Area
- Gwynedd
- Postcode district
- LL40
- Nation
- Wales
- Guide price
- Priced after survey
- Survey
- Free for installation enquiries
Heat loss survey for Dolgellau homes
Homes around Dolgellau range from older terraces to newer estates, and each needs a different design. That is why we survey before we quote.
The survey in Dolgellau includes a check of where the outdoor unit could sit and how its sound would reach neighbours. Houses in Dolgellau built in different eras can need very different heat pump sizes, which is why each is calculated room by room.
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.
- Homes with an existing heat pump that seems undersized or expensive to run
- Homeowners planning insulation or building work who want to know the effect on heat demand
- Self-builders and architects who need emitter and system sizes early
What's included
- Radiator schedule with any upgrades needed for each room
- Recommended heat pump size and design flow temperature
- Room-by-room heat loss calculation using the MCS method
- Electrical supply and network operator notes
- Hot water cylinder sizing for your household
Homeowners in Dolgellau thinking about insulation work can use the survey to see how it would change their heat pump size.
Grants and rules for heat pumps in Wales
Homes in Dolgellau can use the Boiler Upgrade Scheme, which applies in Wales as well as England: £7,500 towards an air source heat pump, or £9,000 when it replaces oil or LPG heating for installations from 21 July 2026 to 31 March 2027. The MCS-certified installer named in your quote applies and deducts the grant.
Installing heat pumps is zero-rated for VAT across the UK until 31 March 2027. Wales has its own permitted development rules for air source heat pumps, so we check what applies to your property, including listed building and conservation-area constraints, at the survey.
Heat loss survey prices in Dolgellau
Here are typical prices for heat loss surveys in Gwynedd, installed and including VAT. Use the guide price tool for a figure based on your home, then a survey confirms it in writing.
| 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.
Short winter days in Dolgellau and what they mean
On the shortest day Dolgellau gets about 7 hours 36 minutes of daylight, with the noon sun around 14° 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.
The steps for heat loss surveys in Dolgellau
- Tell us about your home: postcode, property type and current heating.
- We book a survey in Dolgellau; the surveyor measures rooms, windows and radiators and looks at cylinder space.
- The design and quote arrive in writing, including radiator changes and the outdoor unit position.
- On installation days the old system is removed and the new one fitted and filled.
- We commission the heat pump, show you the controls and register the installation.
Heat loss surveys in Dolgellau: questions
Do I need new radiators for a heat pump in Dolgellau?
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 Dolgellau home gives a room-by-room list.
Do you cover Machynlleth as well as Dolgellau?
Yes. We arrange surveys and installation in Machynlleth, which is about 11 miles south of Dolgellau, and across Gwynedd.
How long does a heat pump survey take in Dolgellau?
A home survey in Dolgellau 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.
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.
Is the heat loss survey free?
Yes, for installation enquiries the home survey and heat loss calculation are free, and the results form the basis of your written quote. If you only want the calculation and report, for example for building plans or comparing quotes, a stand-alone heat loss survey has a guide price of £150–£400, including VAT. We confirm which applies when you book.