Air conditioning in Brookmans Park

A village of detached houses by the Great North Road

The Welwyn Hatfield Local Plan describes Brookmans Park as a large village beside the old Great North Road, now the A1000, between Welham Green and Little Heath. Its streets are formal and regular, with mostly large detached houses at low density, and the village centre sits at its western end. The village has its own station on the East Coast Main Line.

Around it is a landscape of old estates. North Mymms Parish Council points to Gobions, once the park of Sir Thomas More, whose castellated gateway is known as The Folly, and to the Royal Veterinary College's Hawkshead Campus to the west. The house at North Mymms Park, in the parish, is listed grade I.

Brookmans Park homes and what they mean for an install

The ONS counts about 4,035 people in the Brookmans Park built-up area (Census 2021). About 59 per cent of homes are detached and 29 per cent semi-detached. Only 1 in 10 is a flat.

Planning: Welwyn Hatfield Borough Council

Brookmans Park, Welham Green and Little Heath are all in Welwyn Hatfield, so planning goes to Welwyn Hatfield Borough Council. Little Heath joins on to Potters Bar and shares its EN6 postcode, but it is not in Hertsmere.

A heating-capable outdoor unit on a house is often permitted development if it is not used only for cooling, is no bigger than 1.5 m³ and passes the MCS 020(a) noise check of 37 dB(A) at neighbours' windows. A detached house can have two heat pumps, a semi or terrace one. Our planning guide has the rest.

None of the council's conservation areas covers Brookmans Park, Welham Green or Little Heath, so for most houses the noise check and a sensible position are what matter. In July 2026 the government announced that Welwyn Hatfield will become part of a new central Hertfordshire council from 1 April 2028, subject to Parliament.

New homes west of the station

The Welwyn Hatfield Local Plan 2016–2036, adopted in October 2023, allocates land west of Brookmans Park railway station (HS22) for about 428 homes and a new two-form-entry primary school. It can only go ahead once the extra primary school places are secured and a new pedestrian and cycle bridge over the railway has been agreed. The plan also asks for railway noise to be mitigated.

Two small sites off Golf Club Road (HS21 to the west and HS23 to the east) are allocated for about 24 homes between them. If you buy a new home on any of these sites, check its planning conditions before adding an outdoor unit.

Welham Green

Welham Green, the parish's other large village, is quite different. The Local Plan describes a varied mix of older and newer housing, its own station, and an established employment area on Travellers Lane, with Hatfield House park to the east. The ONS figures show more semis and terraces than Brookmans Park: about 41 per cent of homes are semi-detached and 30 per cent terraced.

The plan allocates land at Welham Manor and west of Station Road for about 84 homes, Dixons Hill Road for about 120, and the Marshmoor site for about 100 homes alongside new employment space. For a semi or terrace, one outdoor unit at the rear running a multi-split is the usual answer.

Little Heath, Water End and Bell Bar

North Mymms Parish Council covers Bell Bar, Brookmans Park, Little Heath, Bullens Green, Water End and Welham Green. Little Heath, the Local Plan says, is effectively a northern extension of Potters Bar, with detached housing at low density. Water End and Bell Bar are small places in the countryside around the villages. Any unit or pipe hole on a listed building needs listed building consent, so we check each address before we quote.

Businesses and install day

We fit and service air conditioning in the shops and offices in Brookmans Park and Welham Green, and in units on the Travellers Lane employment area. Ceiling cassettes suit offices with suspended ceilings; wall units suit shops and smaller rooms. Commercial installs are done in business hours.

If you have a drive, the van can usually park on it, close to where the outdoor unit goes. If not, or if you live near either station, tell us when you book and we'll plan where the van unloads.

What air conditioning costs in Brookmans Park

Our starting prices are the same here as across Hertfordshire and London. Home prices include VAT. Business prices are plus VAT. The survey gives you a fixed written price.

• A bedroom or study

  2.5 kW wall unit, 5 m pipe, fitted in a day

  from£1,850inc. VAT

• A living room

  3.5 kW wall unit

  from£2,050inc. VAT

• Open plan or a loft

  5 kW wall unit

  from£2,450inc. VAT

• Two rooms, one outdoor unit

  Multi-split

  from£3,650inc. VAT

• Three rooms

  Multi-split

  from£5,100inc. VAT

• Four rooms

  Multi-split

  from£6,500inc. VAT

• Design range upgrade

  Daikin Emura, Mitsubishi Electric Zen, LG Artcool

  from£550inc. VAT

• An annual service

  Keeps the manufacturer warranty valid

  from£119inc. VAT

Areas and postcodes we cover

We cover the whole of North Mymms parish and the places around it, including:

• AL9: Brookmans Park, Welham Green, Water End and Bell Bar
• EN6: Little Heath
• Nearby: Potters Bar, Hatfield, Cuffley and Welwyn Garden City

Brookmans Park questions