Home gym and media room air conditioning in Stevenage
Bright summers in the East of England mean solar gain through glass is usually the biggest load to design for. Garage gyms and media rooms in Stevenage often face the same problem: thin walls and a lot of heat from people and equipment.
Basement and garage rooms in Stevenage usually need a quick check of the supply and the drainage route before quoting. Stevenage sits around 19 miles from Watford, inside our Hertfordshire area. Postcode districts we cover here include SG1.
Prices in Stevenage
For Stevenage, expect roughly £1,495 to £3,745 per room, VAT included, adjusted for typical East of England rates. Prices here sit above the national middle, reflecting East of England labour rates and parking and access costs. The biggest variables are the pipe route, access for the outdoor unit and the state of the consumer unit, all of which the survey settles. On our East of England figures, the Garage gym option (3.5–5 kW unit with supply check and pump if needed) is about £1,945–£2,745.
Spare room
2.5–3.5 kW unit for a small gym or games room.
Garage gym
3.5–5 kW unit with supply check and pump if needed.
Large space
5–7 kW unit or two units for a big gym or cinema room.
Guide prices show VAT at 20%. HMRC treats most fixed air conditioners and air-to-air heat pumps installed in homes as energy-saving materials, zero-rated until 31 March 2027 when we supply and fit them. If your installation qualifies, your quote shows 0% VAT and a lower price. Servicing, repairs, cleaning and controls are charged at 20%.
Planning and permissions
Since 29 May 2025, England's permitted development rules allow larger outdoor units (up to 1.5 m³) and no longer require a 1 m gap to the boundary, provided the MCS 020(a) noise check is met. Listed buildings and pitched-roof installs still need permission.
The survey
We book surveys in Stevenage at a time that suits you, including early evenings by arrangement, and send the written quote afterwards. At the survey we look at how each room is used, where the sun hits it and how the pipes can reach the outside wall, then put it all in a written quote.
What is included
Included as standard in Stevenage:
- Unit sized for peak use
- Free survey with people and equipment heat loads
- Pressure test, vacuum and commissioning
- Condensate pump where gravity drainage is not possible
- Placement away from screens and seating
Nearby
If you are just outside Stevenage, we also work in Hitchin (5 miles), Letchworth Garden City (5 miles) and Welwyn Garden City (7 miles). See all services in Stevenage or home gym and media room air conditioning across Hertfordshire.

