Hertfordshire · Heat pump installation
Letty Green air source heat pumps
Our engineers work in Letty Green on MCS certified installation of air source heat pumps for heating and hot water, with the Boiler Upgrade Scheme grant applied for. A look at the job first, a fixed-price quote and written records at the end.
- Wanting to stop using oil, LPG or gas for heating
- Deciding which kind of heat pump suits the home
- Radiators that may be too small for a heat pump
What a heat pump looks like in Letty Green
Letty Green is about 20 miles from central London, well within the area we cover from our base in East Grinstead.
With Hatfield House about 3.4 miles south-west, it’s worth asking whether your own home is listed before planning a heat pump.
Letty Green is about 3 miles south-east of Welwyn Garden City, in Hertfordshire. Properties in Letty Green get the same service as everywhere we cover: a look at the job first, a fixed-price quote and written records at the end. In Hertfordshire alone we list 381 places and Letty Green is among them. The nearest of our city pages is London, around 20 miles from Letty Green.
Streets in the area include Station Road, Woolmers Lane and Chapel Lane, each of them within reach. We cover every part of the SG14 postcode area and the roads nearby. Places around Letty Green that are also on our list: East End Green (1 mile east), Staines Green (1 mile north-east), Hertingfordbury (1 mile north-east), Essendon (2 miles south-west) and Little Berkhamsted (2 miles south). Further out, we also cover Watford (14 miles south-west), Hemel Hempstead (14 miles west), Stevenage (9 miles north) and St Albans (8 miles west).
Landmarks near Letty Green
In Letty Green, that means homes and buildings near The Sele School and Panshanger Park. For rail, the closest station is Hertford North station, about 2.2 miles north-east of the centre. A little further out are Howard Centre (3.2 miles north-west) and Mcmullen & Sons Brewery Museum (2.6 miles north-east). For a walk, there’s Willowmead.
Air source heat pumps in Letty Green
Many air source heat pumps can be installed as permitted development in England, without a planning application. Conditions include a maximum outdoor unit size of 1.5 m³, compliance with MCS 020(a), use for more than cooling alone and a site outside the curtilage of a listed building. We check the rules for your property as part of the survey. Common call-outs are for not knowing whether a grant applies and ageing boilers that will need replacing, across air-to-water heat pumps, hot water cylinders and homes heated by oil, LPG or gas.
Space for an outdoor unit is rarely an issue near Letty Green, so the design focuses on heat loss and radiators.
Looking after a system is mostly common sense: keep the outdoor unit clear, follow the manufacturer’s guidance on cleaning and book a service at the interval they recommend. That also helps where the warranty terms ask for regular servicing.
- Location
- Letty Green (SG14)
- Region
- Hertfordshire
- Response
- Answered the same working day
- Accreditations
- NICEIC and F-Gas, MCS
- Quote
- Fixed, in writing
- Prices
- £8,000–£16,000 before the grant, 0% VAT on homes
- Telephone
- 07833 053749
- Page updated
- 30 October 2026
Signs you need air source heat pumps in Letty Green
Air-to-air systems interest people who want cooling in summer as well as heating. They heat rooms through wall, floor or ceiling units and switch to cooling in warm weather. Whether a grant applies depends on the scheme conditions.
It’s time to call us if you are dealing with:
- Choosing between air-to-water and air-to-air
- Plans to switch to electric heating with a heat pump
- Questions about where the outdoor unit can go
Older homes near St John's Church may need extra checks for planning and heat loss before a heat pump is designed.
What your quote should include
- Whether the price is fixed or an estimate
- What’s in the price and what is not
- Whether the quote shows VAT clearly
What you can do yourself, and what needs us
Good habits make our visits easier, not unnecessary. Clean filters and a clear outdoor unit help the system run as it should, but the refrigerant circuit, the electrics and the parts you can’t see still need an engineer at the interval the manufacturer recommends.
Do not move, re-route or disconnect units or pipework yourself. Disconnecting a system means dealing with refrigerant, which only a qualified engineer can do, and the electrical side needs a competent person. Ask us to quote for a move instead.
What happens on the day
You don’t need to do much on the day. Just let us in and point us to the units, or to where they’ll be fitted, and the rest is down to us. At the end, we tidy up and run through the work with you. Pictures of the space and where the outdoor unit could go let us plan the work in Letty Green.
- It starts with a conversation about the home, the existing heating and your plans.
- A heat loss survey works out how much heat each room needs, and we look at the radiators, the cylinder space and where the outdoor unit could go.
- We send a fixed-price quote that shows the equipment, the grant position and the VAT.
- Installation covers the outdoor unit, the indoor connections and the controls.
- We commission the heat pump, complete the MCS paperwork and talk you through the controls.
Getting ready for the visit
- Clear the space around the indoor unit, or where it will go
- Tell us about parking and loading
- Let us know where the consumer unit is
Getting a quote
Here’s what helps us quote: where the property is and what kind of building it is, pictures of the rooms or units, the make and model of any existing system and anything you’ve noticed, such as an error code or a noise. Once you have those, phone 07833 053749 or send an email.
Related advice
Places near Letty Green
Other services in Letty Green
How the job changes from property to property
Heat loss surveys
Without a proper survey, a heat pump can be too big or too small and that matters for comfort and running.
VAT on heat pumps
For air-to-air systems, HMRC’s view depends on the product and the situation and the VAT is confirmed on your quote.
FAQs for Letty Green
Can I get the Boiler Upgrade Scheme grant in Letty Green?
Letty Green is in England, where the Boiler Upgrade Scheme runs. Whether your home qualifies, and for how much, depends on the type of heat pump and the heating it replaces. We hold MCS certification, so the application is ours to make for you.
Is planning permission needed for a heat pump in Letty Green?
That depends on the building and where the outdoor unit goes. The half-mile around the middle of Letty Green holds about 7 listed buildings and structures. The permitted development rules for heat pumps leave out listed buildings and stop outdoor units going on road-facing walls or roofs in conservation areas. Anything outside the rules needs an application, and we raise it with East Hertfordshire council, which is usually the planning authority for Letty Green first.
How much does an air source heat pump cost?
For air-to-water, the price is £8,000–£16,000 (0% VAT on homes) before any grant. The Boiler Upgrade Scheme offers £7,500 to eligible homes in England and Wales, and we confirm eligibility before you commit.
Can I fit air conditioning or a heat pump myself?
The refrigerant side has to be done by a qualified engineer working for an F-Gas certified company. That is a legal requirement, and manufacturers expect it for their warranty too. We can quote for the whole job, from supply to commissioning.
Do you offer maintenance contracts?
Yes. Maintenance contracts are part of what we do, with visits at the interval your system and the manufacturer need. Each visit is written up and F-Gas records kept where they apply.
How quickly will you reply?
The same working day. Then we agree a date that works for you, with a fixed price before work starts.
Why does F-Gas certification matter?
F-Gas certification shows a company is approved to work on equipment containing fluorinated gases, such as the refrigerant in air conditioning and heat pumps. In Great Britain, that certification is a legal requirement, not an optional extra, and we hold it.
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