Air conditioning in Rickmansworth, Croxley Green and Chorleywood
We install, service and repair air conditioning in homes and businesses across Rickmansworth, Croxley Green, Chorleywood and the villages around them. Here's how Three Rivers' planning rules, its many conservation areas and parking affect an install.
- Rickmansworth postcode district
- WD3
- town centre conservation area
- 1974
- single room, from
- £1,850
- ceiling cassette, from, + VAT
- £2,750
Planning: Three Rivers District Council
Planning in Rickmansworth, Croxley Green and Chorleywood is handled by Three Rivers District Council, at Three Rivers House on Northway in Rickmansworth.
A heating-capable outdoor unit on a house is often permitted development, so no application is needed if every limit is met. The main ones: the unit must not be used only for cooling, it must be no bigger than 1.5 m³, and it must pass the MCS 020(a) noise check of 37 dB(A) at neighbours' windows. A terraced or semi-detached house can have one heat pump under these rules. Our planning guide sets out the rest.
Several of the district's conservation areas sit in and around these three places. In any of them, a unit can't go on a wall or roof facing a highway without permission. Listed buildings always need consent.
Conservation areas near Rickmansworth, Croxley Green and Chorleywood
Designation years from the national planning data register and the council. Check the council's maps for exact boundaries.
| Conservation area | Designated | Notes |
|---|---|---|
| Rickmansworth town centre | 1974 | Updated appraisal consulted on in summer 2026 |
| Nightingale Road, Rickmansworth | 1998 | Article 4 direction published by the council |
| Upper Nightingale Road, Rickmansworth | 2006 | Article 4 direction published by the council |
| Cedars Avenue, Rickmansworth | 2006 | Grouped with Upper Nightingale Road by the council |
| Batchworth Heath | 1994 | Ask the council about Article 4 |
| Moor Park | 1995 | Ask the council about Article 4 |
| Croxley Green | 1980 | Ask the council about Article 4 |
| Dickinson Square, Croxley Green | 1994 | Ask the council about Article 4 |
| Chorleywood Common | 1976 | Ask the council about Article 4 |
| Chorleywood Station Estate | 1990 | Ask the council about Article 4 |
| Heronsgate | 1993 | Ask the council about Article 4 |
Some streets have Article 4 directions that remove permitted development rights. Check the council's map for your address and ask the council what applies before you plan an outdoor unit.
Local homes and what they mean for an install
| Type of home | Where | What it means for the install |
|---|---|---|
| Victorian and Edwardian houses | Streets around Rickmansworth town centre | Often in a conservation area. A rear position, out of sight from the street, is the usual answer. |
| Interwar and post-war semis | Across the area, including Mill End and Croxley Green | Outdoor unit on the back wall or a ground pad. A multi-split serves several rooms from one outdoor unit. |
| Large detached houses | Moor Park, Chorleywood and Loudwater | Two heat pumps allowed on a detached house, but check conservation area status and any estate covenants in your deeds. |
| Flats and maisonettes | Rickmansworth town centre and newer blocks | Freeholder consent first. Permitted development allows one heat pump per block, with an outdoor unit up to 0.6 m³. |
Air conditioning for local businesses
Since 29 March 2024, an Article 4 direction has stopped commercial premises becoming homes without planning permission in nine places. They include Rickmansworth Town Centre, Chorleywood District Centre, Croxley Business Park, the Maple Cross and Maple Lodge employment area and the Tolpits Lane employment area.
We fit wall units, ceiling cassettes and multi-split systems for offices, shops, restaurants, clinics and small server rooms. Commercial installs happen in business hours. We can take over servicing from another installer and keep your F-Gas records up to date.
Parking on install day
Three Rivers District Council introduces and manages permit parking restrictions, with resident, visitor and business permits. On yellow lines, vehicles can load and unload but can't park. If your street has permit parking, tell us when you book and we'll plan where the van parks, because we need to unload the outdoor unit close to the house. Three Rivers is outside London's ULEZ.
What air conditioning costs in Rickmansworth
Our starting prices are the same here as across Hertfordshire and London. Home prices include VAT. Business prices are plus VAT. The survey turns them into a fixed written price.
- 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£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
- from£125inc. VAT
Repair diagnostic visit
First hour on site, deducted if you go ahead
Areas and postcodes we cover
We cover the whole area. WD3 also reaches into Buckinghamshire, Watford and the London Borough of Hillingdon, around Harefield and Northwood, where those councils handle planning.
- WD3: Rickmansworth, Batchworth, Mill End, Moor Park and Maple Cross
- WD3: Croxley Green, Chorleywood and Sarratt
- Nearby: Watford, Amersham and Chesham
Rickmansworth questions
Do I need planning permission for air conditioning in Rickmansworth?
It depends where you live. Outside a conservation area, a heating-capable unit on a house can be permitted development if it meets the size, position and noise limits. In a conservation area it can't face a highway, and some streets have Article 4 directions. Applications go to Three Rivers District Council.
I live on Nightingale Road. What should I check?
The council publishes Article 4 directions for the Nightingale Road and Upper Nightingale Road conservation areas. Check whether your house is inside the boundary and ask the council what the direction covers. If it removes the heat pump rights, you'll need a planning application.
Can I have air conditioning in a Chorleywood conservation area?
Usually, yes, with care. Chorleywood Common and Chorleywood Station Estate are conservation areas, so the outdoor unit can't go on a wall or roof facing a highway under permitted development. We look for a rear or side position and give you the details for any application.
Do you fit air conditioning at Croxley Business Park?
Yes. We survey the space, check with the landlord or managing agent about where condensers can go, and fit during business hours. Commercial wall units start from £1,795 plus VAT and ceiling cassettes from £2,750 plus VAT.
How much does a single room cost?
A 2.5 kW wall unit for a bedroom or study starts at £1,850 including VAT, with a 5 m pipe run, fitted in a day. Living rooms usually need 3.5 kW, from £2,050. Two rooms on one outdoor unit start from £3,650.
Can you service my existing system?
Yes. An annual service starts at £119 including VAT, plus £59 for each extra indoor unit on the same visit. We service most brands, whoever installed them. A repair diagnostic visit is £125, deducted if you go ahead.