Hertfordshire · Heat pump installation
Heat pump installers in Lemsford
MCS certified installation of air source heat pumps for heating and hot water, with the boiler upgrade scheme grant applied for, in Lemsford and nearby. Call for a fixed-price quote; we reply the same working day.
- Ageing boilers that will need replacing
- Choosing between air-to-water and air-to-air
- Working out whether radiators need upsizing
Air source heat pumps in Lemsford, done properly
Until 31 March 2027, a heat pump installed in residential accommodation carries 0% VAT, with 5% from 1 April 2027. This is HMRC’s energy-saving materials relief, which applies to homes rather than businesses. For air-to-air systems, we confirm the VAT on your quote. This is general information, not tax advice. The work covers air-to-water heat pumps, underfloor heating and air-to-air heat pumps, and people most often call us about deciding which kind of heat pump suits the home and checking whether planning permission is needed.
Older and listed homes in villages like Lemsford need extra care, and permitted development does not cover listed buildings, so consent comes first.
Some warranty terms depend on the system being serviced regularly by a qualified engineer. If that applies to your system, booking the service on time keeps the record straight and each visit is recorded.
- Location
- Lemsford (AL8)
- Region
- Hertfordshire
- Credentials
- NICEIC approved, F-Gas certified, MCS
- Prices
- Air-to-water £8,000–£16,000 before any grant (0% VAT for homes)
- Quotes
- Fixed after a survey or photos
- Response
- Same working day
- Phone
- 07833 053749
- Reviewed
- 30 October 2026
FAQs for Lemsford
Is planning permission needed for a heat pump in Lemsford?
The answer turns on the property and where the outdoor unit would sit. The Lemsford Conservation Area is close to the centre of Lemsford. 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 cannot face a road. Where needed, we check with Welwyn Hatfield council, which is normally the planning authority for Lemsford.
Will you come out to Lemsford?
We do. Villages and hamlets get the same service as the bigger towns. Send a few details and photos, and we reply the same working day.
What’s the difference between air-to-water and air-to-air heat pumps?
Air-to-water replaces the boiler for heating and hot water, while air-to-air heats and cools rooms. The survey helps decide. We install both types.
Which accreditations do you hold?
F-Gas company certification, NICEIC approval for electrical work and MCS certification for heat pumps, and we are Checkatrade members. Engineers who handle refrigerant hold their own F-gas qualifications as well.
Can you look at a system you didn’t fit?
Yes. We look at it first and tell you what we find, including anything about the original installation that needs putting right. You get a fixed price before any work goes ahead.
Do you work on commercial properties?
Yes. From one rented home to commercial buildings, the approach is the same: survey or diagnosis, a fixed price and proper paperwork.
Can I do any of the installation myself?
Anything that involves the refrigerant needs an F-Gas qualified engineer from a certified company. That’s a legal requirement, and it also matters for the manufacturer’s warranty. We’re happy to quote for the full job, supply to commissioning.
Towns and villages near Lemsford
Other services in Lemsford
What owners can safely do
Owners can handle the everyday basics: keep the outdoor unit clear of leaves, plants and clutter, check the settings and the remote, and follow the cleaning the manual describes. Opening up the units, the electrics and the refrigerant circuit are a job for us.
Never try to top up, release or handle refrigerant yourself. Under the F-gas rules, engineers need their own qualifications and the company must be certified, and escaping refrigerant can cause cold burns. A suspected leak is our job, not yours.
Let and managed properties
If you look after several properties, we can quote and plan the work across all of them. Every address has its own paperwork, so the files stay tidy.
We work for landlords, letting agents and managing agents as well as homeowners and businesses. Let us know who will give us access and who the records should go to and we’ll copy in whoever needs it.
Heat pumps in Lemsford: local notes
About 46% of homes in the Lemsford area were built between the wars, according to VOA council tax data. For homes of that age, the survey checks the insulation, the radiators and the hot water setup.
With Digswell House about 1.9 miles north-east, it’s worth asking whether your own home is listed before planning a heat pump.
Lemsford is about 2 miles west of Welwyn Garden City, in Hertfordshire. Homes and businesses alike in Lemsford, we can help with air source heat pumps. We reply to enquiries the same working day and our emergency line runs 24/7. Our list for Hertfordshire has 381 entries, and Lemsford is one. There’s also a page for London, roughly 21 miles from Lemsford.
If your postcode is in AL8, the property is within reach. Mill Close, Lemsford Village and Great North Road and the roads off them are all inside our area. Close to Lemsford, our area also takes in Stanborough (1 mile south), Coleman Green (2 miles west), Cooper's Green (2 miles south-west), Hatfield (2 miles south) and Smallford (3 miles south-west). We also work in nearby towns such as Watford (12 miles south-west), Hemel Hempstead (10 miles west), Stevenage (8 miles north) and St Albans (5 miles south-west).
Landmarks near Lemsford
Locally, jobs take us to houses, flats and workplaces close to Stanborough Park, Stanborough School and The Sun Inn and the streets around them. The nearest railway station is Welwyn Garden City station, about 1.2 miles east of the centre. Nearby you’ll also find Queen Elizabeth II Hospital (2.1 miles south-east) and The Bunker at Hatfield Police Station (2.1 miles south). Not far away are Lemsford Springs.
The process
Refrigerant work is done by qualified engineers working for an F-Gas certified company, and electrical work is done by us as NICEIC approved contractors. So on the day, you do not need a separate electrician for the electrical side. On site, it takes anything from a couple of days for air-to-air to the best part of a week for air-to-water with radiator changes. For a village like Lemsford, tell us about narrow lanes, gates and parking when you book.
- Step one is understanding the house, how it’s heated today and what you’d like to change.
- The survey measures heat loss room by room and looks at radiators, hot water and the best spot for the outdoor unit.
- A fixed-price quote follows, setting out the system, any grant that applies and the VAT.
- The outdoor unit, the indoor equipment and the controls are installed and connected.
- The system is commissioned and registered under MCS, and we show you how to use it.
Preparing for the visit
- Tell us about access, such as roof hatches, high walls or locked plant areas
- Make sure we can reach the consumer unit or fuse board
- Have the make and model of any existing unit to hand
Get a fixed-price quote
Need a price for air source heat pumps? Please phone us on 07833 053749 or send an email with a few details about the property. We will talk you through the options and give you a fixed-price quote before you commit to anything.
Related advice
What we’re called out for in Lemsford
The Boiler Upgrade Scheme has made people ask whether their home could qualify. Eligibility depends on the property, the system and the scheme rules, so we check before you commit.
If any of these sounds familiar, it’s worth a diagnosis:
- Finding a place for the outdoor unit
- A boiler that’s getting old
- Questions about the Boiler Upgrade Scheme
Period properties close to Church of St John the Evangelist can suit a heat pump, though insulation and any heritage protection are checked first.
What to look for in a quote
- Whether extra work needs your approval first
- Whether they looked at the job before pricing it
- Whether testing, commissioning and paperwork are included
A customer’s words
“Office air con broke down in the July heatwave. Called at 8am, engineer was here by noon and fixed within 2 hours. Brilliant emergency response. They now hold the service contract for the whole building.”
James T., Crawley, office manager