Essex · Heat pump installation
Mountnessing air source heat pumps
One call covers air source heat pumps in Mountnessing, from the first look to sign-off. An F-Gas certified company, NICEIC approved, on Checkatrade.
- Plans to switch to electric heating with a heat pump
- Deciding on the outdoor unit position
- An oil, LPG or gas boiler near the end of its life
Air source heat pumps in Mountnessing
In England, an air source heat pump on a house can often go in under permitted development rights. The conditions include an outdoor unit of no more than 1.5 m³ and compliance with MCS 020(a), and the unit can’t be used solely for cooling or sit within the curtilage of a listed building. We look at the planning position for your home during the survey. Typical jobs include plans to switch to electric heating with a heat pump and ageing boilers that will need replacing, on radiator systems, homes heated by oil, LPG or gas and underfloor heating.
In a place like Mountnessing, some homes are listed, because permitted development doesn’t apply within the grounds of a listed building, so consent comes first.
Aftercare is simple, and most of it is in the manual: 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
- Mountnessing (CM15)
- Region
- Essex
- Response
- We reply the same working day
- Prices
- £8,000–£16,000 before the grant, 0% VAT on homes
- Accreditations
- NICEIC approved, F-Gas certified, MCS
- Quote
- Fixed, in writing
- Call
- 07833 053749
- Last updated
- 30 October 2026
Leave it or put it right?
From 1 April 2027, VAT on heat pumps in homes rises from 0% to 5%. It’s a date to bear in mind when planning, though the right time also depends on your home and heating. Booking before summer means the work in Mountnessing is done before the hot weather.
Typical ranges are on our prices page, but each job is priced on what it involves. Call for a fixed-price quote, and we will talk you through it.
Why choose AirCon Doctor in Mountnessing
- NICEIC approved for electrical work
- A fixed price before any work starts
- MCS certified for heat pumps
- Diagnosis first, then a fixed price
Read how installs are priced and our accreditations.
What happens on the day
Our engineers bring the tools, gauges and access equipment the job needs. All we ask is clear access to the units, or to where they’ll go, and to the consumer unit. On site, the work 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. Seeing the property in photos first means the trip to Mountnessing can be planned properly.
- First, a chat about the property and your goals for the heating.
- We survey for heat loss and look at radiators, cylinder space and outdoor unit options.
- You get our view on the right type for the house, and on whether the Boiler Upgrade Scheme applies.
- Installation follows on the agreed dates.
- After commissioning, you get the MCS certificate and a handover.
How to prepare
- Clear a path to the units and the space around them
- Unlock any gate, garage or side passage we need
- Clear access to the fuse board
Ask for a quote
For a fixed-price quote, phone us on 07833 053749 or email us with the address and a few details about the rooms or units involved. A few pictures make it quicker. You will hear back from us the same working day.
Related advice
Common questions in Mountnessing
Is Mountnessing within the area you cover?
Yes, and the size of the place makes no difference to how we work. A few photos and the postcode are enough to get things started.
Does the Boiler Upgrade Scheme cover homes in Mountnessing?
Yes, the scheme covers homes in England, including Mountnessing, if they qualify. The amount depends on the type of heat pump, and the survey confirms which applies. The installer applies, and we are MCS certified.
What does an air-to-water heat pump cost?
Air-to-water work is in the £8,000–£16,000 range (0% VAT on homes), with any grant still to come off. The heat pump size, radiator changes and the cylinder decide where in that range you are, and air-to-air systems are priced after a survey.
Do I need planning permission for a heat pump?
Often not in England, as many heat pumps on houses are permitted development, if 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.
Can we book visits on a schedule?
Yes. We offer maintenance contracts, set at the interval the system and the manufacturer’s terms need. Each visit is written up and F-Gas records kept where they apply.
Which type of heat pump is right for my home?
Air-to-water heats radiators or underfloor heating and hot water; air-to-air heats rooms through indoor units and can cool them. With air-to-air, hot water needs another source, and we explain which suits your home.
How soon will you get back to me?
The same working day. After that, we agree a survey, diagnosis or installation date that suits you, with a fixed price before work starts.
Places near Mountnessing
Also in Mountnessing
Signs you need air source heat pumps in Mountnessing
When a home is being extended or renovated, it’s a good moment to look at heat pumps. Pipework, radiators and space for a cylinder are easier to plan while work is going on.
If any of these sounds familiar, it’s worth a diagnosis:
- Ageing boilers that will need replacing
- Comparing heat pump types
- Checking whether planning permission is needed
Historic houses such as Ingatestone Hall, about 1.6 miles east, are a reminder that listed homes need consent before a heat pump goes in.
Comparing quotes
- What the manufacturer’s warranty covers and for how long
- Whether the quote is a fixed price
- Whether anyone has checked the property or the system first
Homes in Mountnessing and heat pumps
Malbrooks Farmhouse, listed at grade II, is one of roughly 13 protected buildings and structures in the half-mile around Mountnessing’s centre. That affects heat pumps: listed buildings need consent, and conservation areas limit where the outdoor unit can go under permitted development. Where necessary, we check with the planning team at Brentwood council, which normally handles Mountnessing. Valuation Office Agency council tax records date about 46% of homes in the Mountnessing area to the post-war years, 1945 to 1972, and about 72% of households live in detached or semi-detached houses, according to the 2021 Census. Whether the walls and loft have been insulated makes a real difference to the heat pump size for homes of that period. Houses normally have space for an outdoor unit and a hot water cylinder.
A heat loss calculation decides the size of heat pump your home needs.
Mountnessing is about 3 miles north-east of Brentwood, in Essex. Whatever kind of property you have in Mountnessing, we can help with air source heat pumps. We reply to enquiries the same working day, and there’s a 24/7 emergency line. Count every place we list in Essex and you reach 644, with Mountnessing on the list. For properties nearby, see our London page (22 miles or so).
Every address in CM15 is within our area, from busy streets to back roads. If you need air source heat pumps at a property on Church Road, Roman Close and Roman Road or a nearby road, we can help. If you’re just outside Mountnessing, we cover Swallows Cross (1 mile north-west), Green Street (1 mile north), Ingatestone (1 mile north-east), Buttsbury (2 miles east) and Hutton (2 miles south). We also work in nearby towns such as Chelmsford (8 miles north-east), Basildon (7 miles south-east), Harlow (13 miles north-west) and Brentwood (3 miles south-west).
Local landmarks in Mountnessing
In Mountnessing, that means homes and buildings near Shenfield High School, Hutton Country Park and George and Dragon pub and the streets around them. Mountnessing’s nearest station is Ingatestone station, about 1.6 miles north-east. Nearby you’ll also find Brentwood Community Hospital (2.7 miles south-west). The countryside around Mountnessing includes Norsey Wood.
Different systems, different jobs
Air-to-water heat pumps
Air-to-water systems take heat from the air and put it into your central heating and hot water. It takes over from the boiler and we install it to MCS standards.
Air-to-air heat pumps
Air-to-air heat pumps warm rooms through indoor units and can cool them in summer. Hot water needs a separate source, so that has to come from elsewhere.
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