Greater London · Heat pump installation
Heat pump installation in Blackfen, Greater London
Looking for air source heat pumps in Blackfen? We diagnose first, fix the price and book the work around you, then sign it off with written records.
- Ageing boilers that will need replacing
- Working out whether radiators need upsizing
- Deciding which kind of heat pump suits the home
Air source heat pumps in Blackfen
A heat pump takes heat from the outside air and moves it into your home, using electricity to drive the process. It works on the same principle as air conditioning, run the other way and the Energy Saving Trust notes that air-to-air heat pumps are sometimes referred to as air conditioning. Common call-outs are for checking emitters for a heat pump and deciding which kind of heat pump suits the home, across hot water cylinders, homes heated by oil, LPG or gas and radiator systems.
In a London area like Blackfen, many homes are flats or terraces with little outside space, and that decides which kind of heat pump works. Air-to-water needs room for the outdoor unit and typically a cylinder, while an air-to-air system needs less space.
Whatever the visit, you get a written record: commissioning details for an installation, a fault and repair note for a repair, or a record of the service. File it with the manual, because it helps with any later warranty question.
- Where
- Blackfen (DA15, DA16, SE9)
- Wider area
- Greater London
- Typical price
- £8,000–£16,000 (0% VAT on homes), before the grant
- Quotes
- Fixed after a survey or photos
- Approvals
- F-Gas certified company, NICEIC approved, MCS
- Replies
- Answered the same working day
- Call
- 07833 053749
- Updated
- 30 October 2026
Your questions about air source heat pumps in Blackfen
Can you fit air conditioning in a London flat in Blackfen?
In many cases, yes, once the lease and the building’s rules are checked. We look at where the outdoor unit could go, such as a balcony, flat roof or rear wall, and write it up for the freeholder or agent.
Can I get the Boiler Upgrade Scheme grant in Blackfen?
Blackfen is covered, as the scheme runs across England and Wales. It gives £7,500 towards an air-to-water or ground source heat pump, or £2,500 towards an air-to-air heat pump that replaces the fossil-fuel heating and meets the whole home’s heating need. As an MCS certified installer, we apply for it on your behalf.
Do I get paperwork after the visit?
Yes, on every job. A new system comes with commissioning details, F-Gas records and the manufacturer’s warranty information, while repairs and services get a written note of what was found and done.
Do I need to service the system to keep the warranty?
It depends on the manufacturer’s terms. Some manufacturers make regular servicing by a qualified engineer a condition of the warranty, so it’s worth checking. Keep every service record either way.
Are my radiators big enough for a heat pump?
It depends on each radiator and the room it heats. At the lower temperatures a heat pump uses, radiators need more surface so we check every radiator against the room’s heat loss.
Who has to arrange F-Gas leak checks?
Whoever operates the equipment, together with the technicians who service it. Systems below 5 tCO2e fall outside the set leak check intervals, while larger ones need checks at least every 12 months, or every 6 months from 50 tCO2e. We can tell you which band your system falls into.
Should I choose air-to-water or air-to-air?
Air-to-water heats radiators or underfloor heating and hot water; air-to-air heats rooms through indoor units and can cool them. Air-to-air doesn’t heat hot water and the survey helps decide.
Air source heat pumps in Blackfen: the local picture
The Valuation Office Agency’s council tax figures show about 70% of homes in the Blackfen area date from 1919 to 1939, and about 37% of households live in terraced houses, according to Census 2021 figures. Whether the walls and loft have been insulated makes a real difference to the heat pump size for homes of that period. Terraced houses share walls with neighbours, which helps, but the outdoor unit position needs care with noise next door. In London, outside space and the rules for flats often decide which kind of heat pump suits.
If your home is listed, like Danson House about 1.2 miles east, listed building consent comes before any heat pump work. Period properties close to Church of the Good Shepherd can suit a heat pump, though insulation and any heritage protection are checked first.
Blackfen is about 2 miles east of Eltham, in Greater London. Across the DA15 area, we can help with air source heat pumps. Count every place we list in Greater London and you reach 764, with Blackfen on the list.
Not far from Blackfen, a recent job of ours was on Greenwich High Road, Greenwich (SE10), about 4 miles north-west: installing a Mitsubishi Electric wall-mounted unit in the retail area and a second unit in the stockroom and office.
From Days Lane, Gordon Road and Kent Avenue to the smaller roads in between, the whole area is covered. Every address in DA15, DA16 and SE9 is covered, from the main roads to the quietest streets. Other places close to Blackfen include Falconwood (1 mile north), Avery Hill (1 mile west), East Wickham (1 mile north), New Eltham (1 mile south-west) and Longlands (1 mile south). We also work in nearby towns such as London (9 miles north-west), City of Westminster (11 miles north-west), Marylebone (11 miles north-west) and Kensington (13 miles west).
What’s near Blackfen
We fit and service air conditioning in homes and premises around The George Staples pub, Harris Academy Falconwood and Shoulder of Mutton Green, among other places. Blackfen’s nearest station is Falconwood station, about 0.8 miles north-west of the centre. Nearby you’ll also find Broadway Shopping Centre (2.3 miles east) and Eltham Community Hospital (1.7 miles west). The countryside around Blackfen includes Summer Hill and The Tarn.
Towns and villages near Blackfen
More services for Blackfen
Looking after your system
To keep the system working properly:
- Book a yearly service
- Use the settings explained at handover
- Keep up with insulation and draught-proofing
Now and then in cold weather, the outdoor unit defrosts itself. It may give off steam or sound different for a few minutes, and that is normal.
Have the system serviced regularly. Your manufacturer’s warranty terms may say something about servicing.
Owner checks or an engineer?
Refrigerant is off limits for anyone without the right qualifications. The law requires anyone working on equipment containing F gas to hold the right qualifications, and the company to be certified, and refrigerant lines can cause cold burns. If you suspect a leak, switch the system off and call us.
Owners can handle the everyday basics: keeping the outdoor unit clear, checking the mode and set temperature, and the routine cleaning in the manual. Anything inside the units, the electrics and the refrigerant is engineer’s work.
Why it’s worth doing now in Blackfen
The two types suit different homes and needs. Air-to-water works with radiators and a cylinder, with a £7,500 grant for eligible homes, while air-to-air heats and cools rooms and has a £2,500 grant only in limited cases, and we explain which fits your home. Planning ahead in Blackfen means you choose the date, not the weather.
Height, access and the distance between the indoor and outdoor units can all change the price. We take each of them into account and give you a fixed price before we start.
Why people in Blackfen choose us
- MCS certified for heat pumps
- Diagnosis first, then a fixed price
- Mitsubishi Electric, Daikin, Fujitsu, Panasonic, Toshiba and more
- Electrical work covered by our NICEIC approval
Read our cost guide and our accreditations and certificates.
How it works
Think of the visit in three stages: look, put right and sign off. First we check the system or the space against the plan, then the work itself, and finally we test, record and explain. The middle part takes longest, which takes a few days for most air-to-water installations, with air-to-air systems often quicker. Send us a few phone pictures and we can often price a straightforward job in Blackfen before visiting.
- You tell us about the home and what you want from a heat pump.
- We survey for heat loss and look at radiators, cylinder space and outdoor unit options.
- We explain which type of heat pump suits the home and whether a grant could apply.
- We install the heat pump and connect it up.
- After commissioning, you get the MCS certificate and a handover.
Before we arrive
- Clear access to the fuse board
- Dig out any previous service or F-Gas records
- Mention any managing agent or landlord rules we need to follow
Getting a quote
Photos are the fastest route to a quote: the inside and outside of the property where the work is, plus the rating plate of any unit already there. Tell us the address and what you need, and many jobs can be priced from that.
Read more
A customer’s words
“Excellent service from start to finish. Two wall-mounted units installed in our home. Clean, tidy work: they protected all the floors and left no mess. The systems work brilliantly. Would highly recommend.”
Sarah M., East Grinstead