Hertfordshire · Heat pump installation
Air Source Heat Pumps in Mackerye End
F-Gas certified and NICEIC approved, we cover Mackerye End for air source heat pumps. A fixed price before any work starts, and a 24/7 emergency line.
- Wanting to stop using oil, LPG or gas for heating
- Questions about the Boiler Upgrade Scheme
- Working out whether radiators need upsizing
Air source heat pumps in Mackerye End, done properly
Hot water from an air-to-water system is stored in a cylinder. Homes with a combi boiler may not have a cylinder, so finding space for one is part of the survey. With air-to-air, hot water has to come from something else. Typical jobs include moving away from fossil-fuel heating and replacing a combi boiler with a heat pump, on homes heated by oil, LPG or gas, radiator systems and air-to-air heat pumps.
For a home around Mackerye End that is off mains gas and heated by oil or LPG, the Boiler Upgrade Scheme adds an extra £1,500 until March 2027 for an air source or ground source heat pump.
Equipment warranty comes from the manufacturer, on its own terms, and we set them out on your quote. Terms differ from brand to brand, so we go through them with you rather than leave you to find the small print.
- Where
- Mackerye End (AL5)
- Region
- Hertfordshire
- Quotes
- Fixed-price quote after a site survey
- Credentials
- NICEIC approved, F-Gas certified, MCS
- Costs
- £8,000–£16,000 before the grant, 0% VAT on homes
- Phone
- 07833 053749
- Updated
- 30 October 2026
Looking after it afterwards
To keep the system working properly:
- Keep the outdoor unit clear all year
- Leave indoor units unobstructed
- Ask about the grant before you commit
Once commissioned, we register the installation with MCS and give you the certificate. File it with the warranty documents for future reference.
Let the heat pump run steadily rather than switching it on and off as explained at handover.
The process
Each visit follows the same order: agree the plan on site, protect the area, carry out the job, check the system and explain it all to you. The visit itself takes a few days on site, depending on the cylinder, the radiators and the pipework involved. Photos of the room and the outside of the property help us plan a visit to Mackerye End.
- First we find out about the property, the heating you have now and what you are hoping for.
- We survey the home room by room for heat loss, and check the emitters, hot water and outdoor unit position.
- The price comes back fixed and in writing, with the grant and VAT shown line by line.
- Installation covers the outdoor unit, the indoor connections and the controls.
- The system is commissioned and registered under MCS, and we show you how to use it.
How to prepare
- Plan for pets to be kept clear during the visit
- Arrange for someone to be there to let us in
- Mention any roof access, ladders or high-level work
How to get a quote
Quotes don’t take long. Send a few details and photos, and we reply the same working day. Where a survey is needed, we arrange a time that suits you.
Related advice
Why it’s worth doing now in Mackerye End
Replacing a boiler in a hurry when it breaks leaves little time to consider a heat pump. Planning ahead gives time for the heat loss survey, the design and the grant application before you need the heat. Planning ahead for a job in Mackerye End means we can bring everything needed.
Leaving a fault or an overdue service rarely makes the work cheaper. Faults and wear in a system tend to grow, and a struggling system uses more electricity to do less. If you’re unsure, ring 07833 053749 or fill in the contact form and we’ll give you an honest view and a fixed price.
Why us?
- Diagnosis first, then a fixed price
- Fixed-price quotes after a survey or pictures
- Emergency calls taken 24/7
- Checkatrade member
Also near Mackerye End
Also in Mackerye End
Common questions in Mackerye End
Is a heat pump in Mackerye End permitted development?
That depends on the building and where the outdoor unit goes. Central Mackerye End sits inside the Mackerye End Conservation Area. A heat pump on a house can be permitted development if it meets the conditions, including the MCS noise check, but not within the grounds of a listed building, and in a conservation area the outdoor unit can’t face a road. Where needed, we check with St Albans City council, which is typically the planning authority for Mackerye End.
Does the Boiler Upgrade Scheme cover homes in Mackerye End?
Mackerye End is covered, as the scheme runs across England and Wales. The amount depends on the type of heat pump, and the survey confirms which applies. As an MCS certified installer, we apply for it on your behalf.
Can I do the refrigerant work myself?
The refrigerant side has to be done by a qualified engineer working for an F-Gas certified company. That’s a legal requirement, and manufacturers expect it for their warranty too. We’re happy to quote for the full job, supply to commissioning.
Can you look at a system you didn’t fit?
Yes. Systems fitted by other companies are fine, on all the main brands. Send us the make and model, and any records you have.
How long does a heat pump installation take?
It takes a few days for most air-to-water installations, with air-to-air systems often quicker. How much of the heating changes decides most of the time, and we confirm the timing with your quote.
When will I hear back?
The same working day. After that, we agree a survey, diagnosis or installation date that suits you, and you get a fixed price before any work goes ahead.
Do I get paperwork after the visit?
Yes. Every visit is written up, and any work on the refrigerant circuit goes in the F-Gas records. File them with the system’s paperwork.
Air source heat pumps around Mackerye End
About 42% of homes in and around Mackerye End date from 1945 to 1972, according to the Valuation Office Agency’s council tax figures, and the 2021 Census found about 62% of households in detached or semi-detached houses. For homes of that age, the survey checks the insulation, the radiators and the hot water setup. Finding room for the outdoor unit and a cylinder is seldom a problem in homes like these.
If your home is one of the older properties near All Saints, the survey checks whether it’s listed or in a conservation area before the outdoor unit position is chosen. Historic houses such as Shaw's Corner, about 2.3 miles east, are a reminder that listed homes need consent before a heat pump goes in.
Mackerye End is about 1 mile north-east of Harpenden, in Hertfordshire. Our engineers cover Mackerye End for air source heat pumps, along with the rest of Hertfordshire. We cover 381 places across Hertfordshire, from busy centres to quieter spots. The nearest of our city pages is London, around 25 miles from Mackerye End.
Every address in AL5 is covered, from the main roads to the quietest streets. Close to Mackerye End, our area also takes in Lea Valley (1 mile south), Porter's End (1 mile north), The Folly (1 mile south-east), Blackmore End (1 mile north-east) and Bower Heath (1 mile north-west). We also work in nearby towns such as Watford (12 miles south), Hemel Hempstead (8 miles south-west), Stevenage (8 miles north-east) and St Albans (5 miles south).
Around Mackerye End
Locally, jobs take us to houses, flats and workplaces close to The Cherry Trees pub, Sir John Lawes School and Lydekker Park. The closest station to Mackerye End is Harpenden station, roughly 1.7 miles south-west of the centre. Nearby you’ll also find St Albans City Hospital (4.8 miles south) and Harpenden Museum (1.9 miles south-west). Not far away are Wheathampstead Local Nature Reserve.
Different systems, different jobs
Radiators and underfloor heating
Underfloor heating suits a heat pump’s lower flow temperature, and we can connect to it where it’s already in.
Air-to-air heat pumps
The £2,500 grant for air-to-air applies only when the system replaces the fossil-fuel heating and covers the whole home’s demand. It also has to be fitted by an MCS certified installer, in a home.
What a customer said
“Very professional from the initial survey through to installation. The engineer explained everything clearly and the quote was exactly what we paid. Would not hesitate to recommend AirCon Doctor.”
David W., Haywards Heath