- Area
- Dumfries and Galloway
- Postcode district
- DG7
- Nation
- Scotland
- Guide price
- Priced after survey
- Survey
- Free for installation enquiries
Heat loss survey in Castle Douglas: what to expect
Most homes can run on a heat pump if the system is designed properly, and Castle Douglas is no different. The key is matching the heat pump and radiators to the home's heat loss.
For Castle Douglas homes with extensions or loft conversions, each part of the house is assessed on its own construction. Design outdoor temperatures for Castle Douglas and the wider Dumfries and Galloway come from local cold-weather data, not a national average.
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
- Self-builders and architects who need emitter and system sizes early
- Landlords comparing properties before deciding where to switch first
What's included
- Outdoor unit siting options and noise check
- Hot water cylinder sizing for your household
- Radiator schedule with any upgrades needed for each room
- Recommended heat pump size and design flow temperature
- Electrical supply and network operator notes
Houses in Castle Douglas built in different eras can need very different heat pump sizes, which is why each is calculated room by room.
Grants and rules for heat pumps in Scotland
In Scotland, heat pump funding comes through Home Energy Scotland rather than the Boiler Upgrade Scheme: a grant of up to £7,500 (up to £1,500 extra for eligible rural and island homes) and an optional interest-free loan of up to £7,500. For a Castle Douglas home, apply and receive the written offer before the installation date is fixed.
Installing heat pumps is zero-rated for VAT across the UK until 31 March 2027. Scotland has its own permitted development rules for air source heat pumps and its own building standards, so we confirm what applies to your Castle Douglas property at survey.
Guide prices for heat loss surveys in Castle Douglas
The ranges below are typical installed prices for homes in Dumfries and Galloway, including VAT. A survey sets the exact figure, because two similar-looking houses in Castle Douglas can need quite different radiators and pipework.
| Survey | Guide price |
|---|---|
| Home survey and heat loss calculation with an installation quote | Free |
| Stand-alone heat loss survey and report | £150–£410 |
Inc VAT. A stand-alone report is for homeowners who want the design without an installation quote.
How long is the heating season in Castle Douglas?
On the shortest day Castle Douglas gets only about 7 hours 11 minutes of daylight and the noon sun sits around 12° above the horizon. Northern winters tend to be longer, so a well-designed, efficient system matters more here because it runs for more of the year.
From survey to switch-on in Castle Douglas
- Start online with a guide price or call us.
- A home survey in Castle Douglas gives us the room-by-room heat loss.
- Your written quote sets out the design, the price and the grant position where you live.
- Installation is booked for dates that suit you; most homes take 2–4 days on site.
- After commissioning you get a handover of the controls and settings, plus the certificates.
Heat loss surveys in Castle Douglas: questions
How long does a heat pump survey take in Castle Douglas?
A home survey in Castle Douglas 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 you service a heat pump in Castle Douglas that someone else installed?
Yes. We arrange servicing and repairs for most air source heat pumps in Castle Douglas, whoever fitted them. Tell us the make and model when you book.
Do I need new radiators for a heat pump in Castle Douglas?
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 Castle Douglas 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.
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.