A monobloc heat pump is an air-to-water unit with the entire refrigerant circuit, including the compressor, heat exchangers and refrigerant, sealed inside the outdoor casing. Heat is passed to water inside the unit, and insulated water pipes carry it into the house to the cylinder and heating system. Nothing containing refrigerant comes indoors, which is a big part of why monobloc units suit so many UK homes.
For Aberdeenshire and Moray terraces with small yards, the survey confirms the unit fits with the clearances it needs. A survey in Aberdeenshire and Moray checks the unit position, pipe route and clearance zones together for homes across Aberdeenshire and Moray. In exposed spots around Aberdeenshire and Moray, frost protection for the outdoor pipework is chosen with the site in mind.
Who it suits
- Households that want to keep refrigerant work out of routine servicing
- Houses and bungalows with outdoor space close to where pipes enter the home
- Owners who want the simplest installation, with no indoor refrigerant
- Homes where the unit can sit within a short pipe run of the cylinder
Grants and rules for heat pumps in Scotland
The Boiler Upgrade Scheme does not apply in Scotland. Instead, homeowners in Aberdeenshire and Moray can apply to Home Energy Scotland for a grant of up to £7,500 towards a heat pump, with up to £1,500 more for eligible rural and island homes, plus an optional interest-free loan of up to £7,500. You need a written funding offer before any work starts.
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 property at survey.
Monobloc heat pumps prices in Aberdeenshire and Moray
The ranges below are typical installed prices for homes in Aberdeenshire and Moray, including VAT. A survey sets the exact figure, because two similar-looking houses in Aberdeenshire and Moray can need quite different radiators and pipework.
| Home | Typical size | Installed guide price |
|---|---|---|
| 1–2 bedroom flat or small terrace | 4–5 kW | £9,800–£12,900 |
| 2–3 bedroom terrace or semi | 5–7 kW | £10,800–£13,900 |
| 3 bedroom semi or small detached | 6–9 kW | £12,350–£15,950 |
| 4 bedroom detached | 8–12 kW | £14,400–£18,550 |
| 5+ bedroom or larger older house | 11–16 kW | £17,000–£23,200 |
Installed, inc VAT: unit, cylinder, controls, minor pipework and commissioning. In Scotland, Home Energy Scotland grants of up to £7,500 and interest-free loans may reduce the cost.
Towns we cover in Aberdeenshire and Moray
We cover 14 towns in Aberdeenshire and Moray for monobloc heat pumps. Each links to local guide prices and the grant position for Scotland.
| Town | Postcode district | Nearest town | Midwinter daylight |
|---|---|---|---|
| Aberdeen | AB11 | Portlethen | 6 h 40 min |
| Elgin | IV30 | Forres | 6 h 33 min |
| Peterhead | AB42 | Ellon | 6 h 35 min |
| Banchory | AB31 | Westhill | 6 h 42 min |
| Buckie | AB56 | Elgin | 6 h 32 min |
| Ellon | AB41 | Inverurie | 6 h 37 min |
| Forres | IV36 | Elgin | 6 h 33 min |
| Fraserburgh | AB43 | Peterhead | 6 h 32 min |
| Huntly | AB54 | Turriff | 6 h 36 min |
| Inverurie | AB51 | Westhill | 6 h 38 min |
| Portlethen | AB12 | Aberdeen | 6 h 42 min |
| Stonehaven | AB39 | Portlethen | 6 h 43 min |
| Turriff | AB53 | Huntly | 6 h 34 min |
| Westhill | AB32 | Aberdeen | 6 h 40 min |
Monobloc heat pumps questions
Is glycol or anti-freeze valves the better option?
Neither is right for every home. Glycol gives reliable frost protection without draining but slightly reduces efficiency and needs its concentration checked at servicing. Anti-freeze valves keep the system water plain but release water if pipes near freezing during a power cut, so the system then needs refilling. The installer recommends one based on the unit, pipe run and how exposed the site is.
What is the difference between monobloc and split heat pumps?
A monobloc unit holds all of its refrigerant in the outdoor unit and sends heated water into the house. A split system has an outdoor unit and an indoor unit called a hydrobox, connected by refrigerant pipes, with heat passed to water indoors. Monobloc installs are simpler; splits avoid outdoor water pipes but need an F-gas certified engineer for the refrigerant work. Our monobloc vs split guide compares them.
Are monobloc heat pumps covered by grants?
Yes. Monobloc units are air-to-water heat pumps, so in England and Wales they are covered by the Boiler Upgrade Scheme grant of £7,500 for eligible homes, or £9,000 when replacing oil or LPG heating within the published dates. In Scotland, Home Energy Scotland funding requires an MCS-certified installer and products. There is no dedicated homeowner heat pump grant in Northern Ireland at present.
Do monobloc heat pumps need an F-gas engineer?
For a typical installation no refrigerant work is needed on site, because the refrigerant circuit is sealed in the outdoor unit at the factory. That is one reason monobloc installs are simpler. If the sealed circuit ever develops a fault or leak, any repair to it must be done by an F-gas certified engineer, as with every refrigerant system.