Heat Pump
Trade: Heating Engineer
⭐ Introduction
A heat pump is an energy-efficient heating system that extracts heat from the air, ground, or water outside your home and uses it to warm your living space and hot water. In the UK, heat pumps are becoming a popular low-carbon alternative to conventional gas or electric boilers, especially as part of efforts to reduce household carbon emissions.
You might consider installing a heat pump if you’re replacing an old boiler, building a new home, or upgrading your heating for environmental reasons or lower running costs. Heat pumps can also qualify for government grants or incentives under schemes such as the Boiler Upgrade Scheme.
🔧 What the job involves
Installing or replacing a heat pump involves several key steps:
Survey and assessment: A heating engineer will assess your home’s insulation, heating needs, and current system to recommend the right type and size of heat pump.
Choosing the system: There are mainly two types of heat pumps: air source heat pumps (extract heat from outside air) and ground source heat pumps (use heat from underground pipes). The choice depends on your property’s space and budget.
Installation: The engineer installs the external heat pump unit, connects it to your home’s heating system and hot water cylinder, and sets up any necessary controls.
Testing and commissioning: The system is tested for proper function, efficiency, and safety. The installer will ensure settings are optimised for your home.
Certification and paperwork: You should receive documentation confirming compliance with Building Regulations and, if applicable, F-Gas regulations (which cover refrigeration gases used in heat pumps).
📝 Step-by-step from booking to completion
Initial enquiry: Contact a qualified heating engineer, ideally one with experience in heat pumps.
Home survey: The engineer visits to inspect your property, discuss your heating needs, assess insulation, and take measurements.
Quotation: You receive an estimate detailing the system type, parts, labour, and timescale.
Scheduling: Agree on a date for installation, allowing time for any necessary permits or equipment orders.
Installation day(s): The engineer installs the heat pump, which can take from a couple of days to over a week depending on complexity.
System testing: The system is thoroughly checked to ensure it’s working correctly and safely.
Handover: You receive user instructions, warranty details, and any certificates.
Aftercare: Book in routine servicing (typically annually) to keep your system running efficiently.
💷 Main costs to expect
Costs will vary according to your property and system choice but here’s a rough breakdown:
- Labour for installation: £1,500–3,000
- Heat pump unit (air source): £6,000–9,000
- Heat pump unit (ground source): £10,000–18,000
- Ancillary parts: Expansion vessels, valves, cylinder upgrade or modifications to radiators — £500–2,000
- Disposal of old boiler/system: £100–300
- Certification and compliance paperwork: Usually included in labour but may be £100–200 extra
Remember, some of these costs may be partially offset by government grants or renewable energy incentives.
📊 What affects the price
Type of heat pump: Air source is generally cheaper and simpler to install than ground source.
Property size and insulation: Larger or less insulated homes need bigger systems.
Existing heating system condition: Older pipework or radiators might need upgrading.
Installation complexity: Groundworks for ground source loops add time and cost.
Location: Remote or difficult access homes may incur higher labour charges.
Regulatory compliance: Some installations require Building Regulations approval or F-Gas certification, adding inspection costs.
Timescale: Urgent installations or out-of-business hours work can increase labour rates.
⏱ How long does it take?
Air source heat pump replacement of boiler: Typically 2 to 3 days, including minor adjustments.
New air source heat pump installation (no existing system): Around 3 to 5 days.
Ground source heat pump: 1 to 2 weeks, as it involves underground pipe installation and groundworks.
Complex upgrades: Longer if system changes or home improvements (like radiator upgrades) are required.
🏠 Can you DIY it?
Installing a heat pump is not a suitable DIY job for most homeowners. It requires specialist knowledge of heating systems, refrigerant handling (subject to F-Gas regulations), electrical connections, and Building Regulations compliance.
Incorrect installation can lead to poor performance, safety risks, invalidated warranties, or failure to meet legal requirements. Qualified heating engineers are Gas Safe and/or RECC (Renewable Energy Consumer Code) registered and trained to work safely with refrigerants.
For these reasons, hiring a professional is strongly recommended.
💰 Typical UK price range
As a rough estimate (including VAT):
- Air source heat pump: £8,000 to £14,000 installed
- Ground source heat pump: £15,000 to £25,000 installed
Prices vary widely depending on property and choices. Always get multiple quotes and ensure installers are suitably qualified.
✅ Handy tips before you start
Check your home’s insulation: Heat pumps work best in well-insulated homes. Consider improving loft and wall insulation first.
Get multiple quotes: Compare not just price but installer qualifications, experience, and aftercare services.
Ask about grants: See if you qualify for government help reducing upfront costs.
Plan for servicing: Annual checks keep your system efficient and prolong lifespan.
Keep all paperwork: Installation certificates, warranties, and manuals are vital for future service or home sale.
Prepare your garden/external area: For ground source pumps, access for excavation is necessary; clear the area beforehand.
Understand running costs: Heat pumps use electricity, so consider energy tariffs and smart meter options.
Taking these steps will help ensure a smooth installation and reliable heating for years to come.