Air conditioning in Sidcup
Air conditioning in Sidcup for semis, lofts and flats
Apex fits and repairs air con in Sidcup, five miles west of our Dartford base. Most jobs here are Victorian, Edwardian or 1930s semis, often with a loft conversion that bakes in summer, plus newer flats and High Street shops. Book a free survey for a fixed written quote.
Air conditioning for Sidcup loft conversions and bedrooms
A loft conversion in a 1930s semi sits right under the roof tiles, so it heats up fast and stays hot well into the evening. A wall unit on the gable wall, or a floor unit under a sloping ceiling, cools it down in summer and warms it in winter.
On a semi, the back wall or a pad in the garden is the usual home for the outdoor unit, and the pipes come down the outside wall in neat trunking. Tall front bedrooms in Victorian and Edwardian semis can still be served from a back-wall outdoor unit, with the pipes run through the loft or along the side of the house.
For bedrooms, pick a unit with a quiet night mode and aim the airflow away from the bed. Our guides to loft conversion air con and air conditioning for bedrooms cover sizes, noise levels and positions.
Air con regulations in Sidcup
Since 29 May 2025, houses in England can usually have a heat-and-cool outdoor unit without planning permission.
The main conditions: the outdoor unit can be no bigger than 1.5 cubic metres, the sound level one metre from the nearest neighbouring bedroom or living-room window must not exceed 37 dB(A) under MCS 020(a), it cannot go on a pitched roof, and a cooling-only unit never qualifies.
Sidcup has several conservation areas, including The Green, Christ Church, Halfway Street, Longlands Road, The Hollies and Foots Cray. There, a unit facing the road usually needs planning permission from Bexley Council. Building Regulations also expect cooling to be sized from a heat-gain calculation and to be no more than 20% above the calculated load.
Our planning permission guide has the detail. Shops on the High Street fall outside the house rules altogether, so an outdoor unit for a shop needs its own planning application.
Send a photo of the room and the outside wall in Sidcup, and Olly will say what fits.
Real Apex jobs
Recent installs
Air con regas and leak repairs in Sidcup
If your system blows warm air in cooling mode, ices up on the pipes or shows a low-pressure fault, it may be short of refrigerant. That only happens through a leak. We trace it with a detector or a nitrogen pressure test, repair the joint or part, vacuum the system and weigh in the correct charge.
As an F-gas certified company we also record the gas added. Low gas is not the only cause of weak cooling, though. Blocked filters, a dirty outdoor coil or a failed fan motor give similar symptoms, so we test before recharging anything. More on air con repairs.
Free survey and a fixed written quote in Sidcup.
Air conditioning services in Sidcup
Reviews
What our customers say
Word for word from Checkatrade and Google.
Excellent Service by Apex Air Conditioning. Very responsive while working out exactly what we wanted and very impressed with the installation by Olly. Very professional and went to lot of effort to make sure everything was perfect.
Olly who runs Apex, was excellent throughout the entire process - The pricing was very fair and the service was outstanding. Everything was faultless: - Quote returned promptly - Price we were quoted was the price we paid - Prompt delivery of ordered units - The work was carried out on the days it had been scheduled & was completed in good time - Friendly, polite & professional team - They kept us informed throughout - Quality products and full instruction on how to use was provided Delighted with our air con and Olly and his team!
The installation of 2 air-conditioning units (1 in the lounge and 1 in the bedroom) was seamless from olly coming to my flat to the compleatd installation. Olly was very professional in listening to my requirements and giving advice. On the day of installation Olly and Andy carried out the work in a professional, timely and clean manner. I would 100% recommend them to friends and family.
Questions
Air conditioning in Sidcup: questions
How much does it cost to install air con in Sidcup?
It depends on the rooms, unit sizes, pipe run and electrics. As a guide, Selectra's 2026 figures show £1,500 to £3,000 for a single room, with London and the south-east 20 to 30% higher. A loft conversion with a short drop to the back wall is usually a simpler fit. Olly gives a fixed written quote after a free survey.
Is it safe to sleep with air con on?
Yes. Use the night or quiet mode, set the temperature a few degrees below the room rather than as low as it will go, and angle the louvres so air does not blow straight onto the bed. Keep the filters clean. In a Sidcup loft bedroom under the roof, a unit running gently all evening usually works better than a blast at bedtime.
Do you fit air con in Sidcup flats?
Yes, with the right consents. Most leases need the freeholder's or managing agent's written consent for an outdoor unit and new holes in the outside wall, and a flat usually needs planning permission from Bexley Council as well. We provide the unit position, size and noise figures for both, and check the building's rules before quoting.
Do you cover Sidcup, Blackfen and Foots Cray?
Yes. Sidcup is about five miles from Dartford along the A2 or the A20. We also cover Blackfen, Lamorbey, Foots Cray, Albany Park, Chislehurst and Bexley. Message a picture of the room and the rear of the house on WhatsApp, and Olly will come out to survey and quote.
Still got a question?
Ask Olly directly about your Sidcup home or business.
Free survey and a fixed written quote for new systems. No obligation.