Air conditioning in Horsham

Air conditioning installation in Horsham

Horsham mixes an old market-town centre with a ring of newer estates, villages close by, and plenty of people working from home a few days a week. That makes a hot spare room or loft office a common problem in summer. We install, service and repair air conditioning across the town and the district, from one wall-mounted unit in a home office to multi-split systems for a whole house and commercial systems for offices and shops.

We’re based in East Grinstead, West Sussex, and we work across West Sussex, Horsham included. We’re an F-Gas certified company, NICEIC approved for electrical work and MCS certified for heat pumps. We fit leading brands such as Mitsubishi Electric, Daikin, Fujitsu, Panasonic, Toshiba and Hitachi, and we explain the manufacturer’s warranty for the unit you choose on your quote.

The process is the same for every job. We look at the property on a site survey, or from your photos for simpler jobs. You get a fixed-price quote. We install, repair or service the system. Then we commission it, record the refrigerant details for your F-Gas records and show you the controls. A single-room split system is typically £1,200–£2,200 + VAT. Our Horsham cost guide explains what affects the price.

For a system that’s stopped cooling, our repairs cover all makes, with diagnosis from £75 + VAT, and an annual service is typically £95–£150 + VAT.

A word on VAT. For homes, HMRC’s Notice 708/6 zero-rates installing air source heat pumps until 31 March 2027, after which the rate becomes 5%. HMRC says most air conditioning units are air source heat pumps, but whether yours qualifies depends on the facts, so we confirm the VAT on your quote. This is general information, not tax advice. Business installations pay the standard rate.

Home offices, period houses and new estates

A home office is often the smallest room in the house, full of screens and chargers, and it can overheat quickly with the door shut. A single wall-mounted split is usually enough, sized to the room and its windows. Loft conversions are harder: heat rises, roofs soak up the sun, and the outdoor unit has to sit somewhere the pipework can reach. We plan those routes on the survey. Our guides to cooling a home office and loft conversions go further.

Horsham’s older streets have Georgian, Victorian and Edwardian houses, some listed and many in conservation areas. On those, appearance matters. We look for rear or side positions for the outdoor unit, keep pipework out of sight and choose indoor units that suit period rooms. Solid walls need core drilling, which we do carefully to protect plaster and decoration.

The newer estates around the town are simpler in most ways, with cavity walls, modern wiring and space for an outdoor unit at the side or rear. Well-insulated new homes do trap heat in summer, though, especially in upstairs bedrooms. A multi-split system lets one outdoor unit serve several rooms, typically £2,800–£4,500 + VAT for two rooms and £4,500–£8,500 + VAT for three to five.

Some villages around Horsham have no mains gas and rely on oil or LPG. If you’re thinking of replacing an oil boiler, an air-to-water heat pump may qualify for the £7,500 Boiler Upgrade Scheme grant, and until March 2027 an extra £1,500 is available for homes heated by oil or LPG with no mains gas. We’re MCS certified and apply for the grant for you. Heat pumps are £8,000–£16,000, at 0% VAT on homes, before the grant.

Noise is worth thinking about in quieter roads and villages, where an outdoor unit can be the loudest thing outside at night. We choose positions away from bedroom windows and patios, use anti-vibration mounts and size units so they aren’t running flat out. Our guide to air conditioning noise explains what to expect.

Our services in Horsham

• Air conditioning installation (from £1,200 + VAT): Air conditioning designed, supplied and installed for your home or business, with a site survey, a fixed-price quote, F-Gas certified engineers and full commissioning.
• Air conditioning repair (from £75 + VAT call-out): Air conditioning faults diagnosed and repaired by F-Gas certified engineers, with the cause explained and a fixed price agreed before the repair goes ahead.
• Air conditioning servicing (from £95 + VAT): Annual air conditioning servicing that cleans, checks and tests the whole system, with F-Gas leak checks recorded where the rules require them.
• Commercial air conditioning (commercial systems priced after survey): Commercial air conditioning designed, installed and maintained for offices, shops, restaurants, hotels, schools, surgeries and server rooms, with the F-gas paperwork kept in order.
• Heat pump installation (£8,000–£16,000 (0% VAT on homes), before the grant): Air source heat pumps designed and installed by an MCS certified installer, with a heat loss survey, a fixed-price quote and the Boiler Upgrade Scheme grant applied for on your behalf.

We also offer 24/7 emergency repair, regas, air-to-air heat pumps, ventilation and MVHR, TM44 inspections, air con hire and maintenance contracts.

Around Horsham

From the centre, the nearest railway station is Horsham station. Well-known places nearby include Horsham Hospital (less than half a mile north-west) and Christs Hospital School Museum (2.4 miles south-west). Homes and businesses we cover around the centre include those near places such as Kingslea Primary School, Millais School, Bohunt Horsham and Hope Chapel. Green spaces within reach include Warnham LNR.