Air conditioning in Chelmsford
We install, service and repair air conditioning across Chelmsford, from Moulsham and Springfield to Great Baddow, Writtle, Danbury and South Woodham Ferrers. Here's who handles planning, how Chelmsford's homes affect an install, and what it costs.
- conservation areas
- 26
- single room, from
- £1,850
- annual service, from
- £119
Planning in Chelmsford
Chelmsford City Council handles planning across the city and its parishes, from Writtle and Broomfield to Danbury and South Woodham Ferrers. Chelmsford became Essex's first city in 2012. The government withdrew its plan to reorganise Essex councils in September 2026, so this won't change for now.
A unit that heats as well as cools can often go on a house without a planning application, under national permitted development rules, within limits on size, position and noise. Those rights don't cover listed buildings, and in a conservation area the unit can't go on a wall or roof facing the road. Our planning guide covers the details, and we check your address before we quote.
Chelmsford's 26 conservation areas
The council lists 26 conservation areas: nine in Chelmsford itself and 17 in the parishes. The newest, North Hill in Little Baddow, was designated in September 2025.
- City: Central, Moulsham Street, New London Road, West End, Baddow Road and River Can
- City: Springfield Green, St Johns Hospital, John Keene Memorial Homes
- The Chelmer and Blackwater Navigation
- Parishes: Writtle, Great Baddow, Broomfield, Danbury, Stock, Boreham, Little Baddow (North Hill)
- Parishes: Great Waltham, Little Waltham, Pleshey, Good Easter, Roxwell, Sandon, Margaretting
- Parishes: Battlesbridge, East Hanningfield The Tye, Springfield Green
Chelmsford homes and how we approach them
| Type of home | Typical areas | How we approach it |
|---|---|---|
| Victorian and Edwardian houses | Moulsham, New London Road and the West End | Often in a conservation area. Outdoor unit at the rear, with a short pipe run to the bedrooms. |
| 20th-century family homes | Springfield, Great Baddow, Broomfield, Chelmer Village | Usually permitted development. One multi-split outdoor unit can serve several bedrooms. |
| New-build homes | Beaulieu and Channels in north-east Chelmsford | Check covenants and any planning condition that removes permitted development rights. |
| Village houses and cottages | Writtle, Danbury, Stock, Pleshey | Check for listing first. Weatherboard or timber frames need a frame-mounted bracket or a ground pad. |
| City-centre flats | Around the station and the river | Freeholder consent first, and usually planning permission. Balconies or flat roofs take the condenser. |
New homes in north-east Chelmsford
Beaulieu and Channels are large new neighbourhoods in north-east Chelmsford, with homes still being built. The Local Plan, adopted in 2020, adds the Chelmsford Garden Community, which the council describes as around 10,000 new homes building on Beaulieu and Channels.
New homes are well insulated, so a smaller unit often does the job. Before we fit anything, check your deeds and any estate rules for covenants about equipment on the outside. Some planning permissions for new estates also remove permitted development rights by condition. If yours does, you'll need to apply even for one small unit.
Parking on install day
On-street parking in Chelmsford is run by the South Essex Parking Partnership, which Chelmsford City Council leads. Some streets, mostly near the city centre, have resident permit parking. If you're in a permit area, tell us when you book and we'll agree where the van can go, because we need to unload the outdoor unit close to the house.
Chelmsford businesses
We fit and service air conditioning in offices, shops, restaurants, salons and clinics across the city. Ceiling cassettes suit offices with suspended ceilings, and wall units suit shops and smaller rooms. Commercial work is done in business hours. We also take over servicing of existing systems from most manufacturers, with F-Gas records kept.
What air conditioning costs in Chelmsford
Our starting prices are the same in Chelmsford as across Essex and London. Home prices include VAT. Business prices are plus VAT.
- from£1,850inc. VAT
A bedroom or study
2.5 kW wall unit, 5 m pipe, fitted in a day
- from£2,050inc. VAT
A living room
3.5 kW wall unit
- from£2,450inc. VAT
Open plan or a loft
5 kW wall unit
- from£3,650inc. VAT
Two rooms, one outdoor unit
Multi-split
- from£5,100inc. VAT
Three rooms
Multi-split
- from£1,795+ VAT
Commercial wall unit
Fitted in business hours
- from£2,750+ VAT
Ceiling cassette
In a suitable suspended ceiling
- from£119inc. VAT
An annual service
Keeps the manufacturer warranty valid
Areas and postcodes we cover
We cover the whole city and its villages. Put your postcode in the quote form and we'll confirm.
- CM1 and CM2: the city centre, Broomfield, Writtle, Springfield, Moulsham and Great Baddow
- CM2: Chelmer Village and Galleywood
- CM3: Danbury, Boreham, Little Baddow and South Woodham Ferrers
- CM4: Stock and Margaretting
Chelmsford questions
Do I need planning permission for air conditioning in Chelmsford?
Not always. A heating-capable unit on an unlisted house can often go in under permitted development if it meets the size, position and noise limits. Listed buildings, flats and the fronts of houses in conservation areas usually need permission. Chelmsford City Council can confirm for your address.
I live in Beaulieu. Can I fit air conditioning?
Usually, yes. Check your deeds and estate rules for covenants, and your home's planning permission for any condition that removes permitted development rights. If both are clear, a unit that meets the national limits can go in without an application.
Is Essex council reorganisation changing who handles planning?
Not for now. The government withdrew its plan for new Essex councils in September 2026 while it reviews the programme. Chelmsford City Council still handles planning.
How much does it cost to cool three bedrooms?
A three-room multi-split starts at £5,100 including VAT. The fixed price depends on pipe lengths and where the outdoor unit goes, which we work out at the free survey.
Do you repair systems another company fitted?
Yes. A repair diagnostic visit is £125, covering the first hour on site, and it comes off the bill if you go ahead with the repair.