Hertfordshire · Heat pump installation
Air Source Heat Pumps in Ley Green
Expert air source heat pumps for Ley Green: a survey or diagnosis, a fixed price, careful work and proper paperwork. Call for a fixed-price quote.
- Checking whether planning permission is needed
- An oil, LPG or gas boiler near the end of its life
- Checking eligibility for a heat pump grant
Ley Green questions
Is Ley Green within the area you cover?
Yes. Ley Green is within the area we cover across London and the South East. Send a few details and pictures, and we reply the same working day.
Does the Boiler Upgrade Scheme cover homes in Ley Green?
Yes, if the home and the heat pump meet the scheme’s rules: Ley Green is in England, where it applies. For an air-to-water heat pump the amount is £7,500; an air-to-air system can get £2,500 if it replaces the fossil-fuel heating outright, meets the home’s full heating demand and is not an add-on to a boiler. The installer applies, and we’re MCS certified.
Will I need planning consent for an air source heat pump?
Often not in England, as many heat pumps on houses are permitted development provided the conditions are met. The outdoor unit must be 1.5 m³ or less, comply with MCS 020(a), not be cooling-only and not be within a listed building’s curtilage.
How does the warranty work?
It’s the manufacturer’s, and the terms are theirs. Some terms depend on regular servicing by a qualified engineer, so keep your service records.
Why use an F-Gas certified company?
Anyone installing, repairing or servicing the refrigerant side must be qualified, and their company certified. Ask to see proof before booking anyone, and we are happy to show ours.
What’s the difference between air-to-water and air-to-air heat pumps?
Air-to-water suits homes with radiators and a cylinder; air-to-air suits rooms that need heating and cooling. The survey helps decide. We install both types.
Can landlords and managing agents book you?
Yes. Homeowners, landlords, agents and businesses all book us across London and the South East. Tell us who should receive the paperwork.
How we handle air source heat pumps in Ley Green
As an MCS certified installer, we fit air source heat pumps for homes in Ley Green and the rest of Hertfordshire. Air-to-water systems feed your radiators or underfloor heating and hot water cylinder, while air-to-air systems heat rooms directly through indoor units and can cool them too. We’ll explain which type fits your home and why. If the problem is no space for a hot water cylinder and finding a place for the outdoor unit, we can sort it out.
If your home in or near Ley Green is heated by oil, LPG or electric heaters with no mains gas, the Boiler Upgrade Scheme adds an extra £1,500 until March 2027 for an air source or ground source heat pump.
Each manufacturer sets its own warranty period. Daikin, for example, gives a standard 2 years on split air conditioning, with longer extensions only on its air-to-water heat pumps. Whatever the brand, the manufacturer’s terms are explained on your quote.
- Place
- Ley Green (SG4)
- Region
- Hertfordshire
- Guide price
- £8,000–£16,000 (0% VAT on homes), before the grant
- Certified
- F-Gas certified, NICEIC approved, MCS
- Quote
- A fixed price before we start
- Call
- 07833 053749
- Updated
- 30 October 2026
What the work involves, system by system
Air-to-air heat pumps
An air-to-air system heats rooms directly and can also provide cooling. Hot water needs a separate source, so that has to come from elsewhere.
Heat loss surveys
The survey works out the heat needed room by room. It’s the basis for sizing the heat pump and the radiators.
Keeping the system healthy
Looking after the system is mostly common sense. A few tips:
- Seal draughts where you can
- File the MCS certificate safely
- Avoid switching the heat pump on and off often
In cold, damp weather the outdoor unit runs a defrost cycle from time to time. You might see steam or hear the unit change note, and that is normal.
Have the system serviced regularly. Check the manufacturer’s terms, as they may include servicing conditions.
How it works
Our engineers bring the tools, gauges and access equipment the job needs. You only need to give us clear access to the units, or their planned positions, and to the fuse board. The visit takes a few days for most air-to-water installations, with air-to-air systems often quicker. Work in Ley Green is booked in advance at a time that suits you.
- Step one is understanding the house, how it’s heated today and what you’d like to change.
- On the visit we calculate what every room loses on a cold day, then check the radiators, room for a cylinder and outdoor unit options.
- We send a fixed-price quote that shows the equipment, the grant position and the VAT.
- We fit the outdoor unit and connect it to the heating, hot water and controls.
- We commission the heat pump, complete the MCS paperwork and talk you through the controls.
Preparing for the visit
- Make sure we can reach the outdoor unit, or where it will go
- Mention any managing agent or landlord rules we need to follow
- Make sure someone can let us in at the agreed time
Get a fixed-price quote
To help us quote: the address and the type of property, a few pictures, the make and model of any existing system and any symptoms, from error codes to drips. Then ring us on 07833 053749 or send an email.
Read more
When something else is needed
In fairness, some problems need a different answer:
- Planning approval where permitted development doesn’t apply
- Tax advice on your own circumstances
- Draught-proofing and insulation upgrades
If in doubt, phone us on 07833 053749 or drop us a line and we will say what we think.
What the work covers
- Underfloor heating
- Radiator systems
- Hot water cylinders
- Air-to-air heat pumps
- Air-to-water heat pumps
- Homes heated by oil, LPG or gas
Also near Ley Green
More services for Ley Green
Air source heat pumps in Ley Green: the local picture
About 72% of households live in detached or semi-detached houses, according to the last census (2021). Finding room for the outdoor unit and a cylinder is seldom a problem in homes like these. Historic England lists about 15 buildings and structures within half a mile of the centre of Ley Green, including Church of St Mary (grade I). Where a home is affected, the outdoor unit position is settled with the local planning authority (usually North Hertfordshire council) before the heat pump design is finished.
Live in one of the older houses around Church of St Mary? Expect the survey to look closely at heat loss and at the building’s planning status. Knebworth House lies about 4.9 miles south-east. Owners of listed homes need consent before a heat pump is fitted, so it’s one of our first questions.
Ley Green is about 4 miles south-west of Hitchin, in Hertfordshire. Properties in Ley Green get the same service as everywhere we cover: diagnosis first, a fixed price and proper paperwork when we’ve finished. Count every place we list in Hertfordshire and you reach 381, with Ley Green on the list. The nearest of our city pages is London, around 30 miles from Ley Green.
Local streets include Plough Lane, Whitehall Road and School Lane, each of them within reach. Here we cover the SG4 postcode area. We also cover Great Offley (2 miles north-west), Temple End (2 miles north) and The Flints (2 miles north-west). Larger places within reach include Hemel Hempstead (12 miles south-west), Stevenage (6 miles east), St Albans (11 miles south) and Welwyn Garden City (9 miles south-east).
Near you in Ley Green
The closest station to Ley Green is Hitchin station, about 4 miles north-east of the centre. Well-known places in the area include Wymondley Castle (4.3 miles north-east) and Lister Hospital (4.5 miles east). For a walk, there’s Markham's Hill and Oughtonhead Nature Reserve.
What a customer said
“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