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Snow on the trees outside a warm window
Keystone Air Conditioning

Heating from the same unit

Modern air conditioning is a heat pump. The same unit that cools the room in July warms it in January.

What to send first

  • Which room stays cold
  • Whether you want it mainly for heating or for both seasons

The cold back bedroom, the garden room the radiators never reach, the conservatory nobody sits in from October to March. A wall unit warms that one room on its own, without touching the rest of the house.

It is the same unit, sold for what it does in winter. Fit it for the cold and it cools the same room next summer: one unit, both seasons.

The same four photos tell the whole job. Your written quote names one fixed amount, and the first fits are in spring 2027.

Values

The quote is what you pay

If your house matches your photos, the amount on your quote is what you pay. If something is different, you are told before any drilling, and you can say no and owe nothing.

You know who is coming

One name on every job, from the first photo to the last screw. No salesman and no stranger at the door.

Your house left clean

Dust sheets down, holes drilled with dust extraction, pipes in neat trunking, everything hoovered and every bit of rubbish taken away.

Frequently Asked Questions

Do you need to visit before you quote?
No. Four photos from your phone are enough for a standard job: the room, the outside wall, the route between them and the fuse board. One fixed amount comes back in writing. If the house turns out different from the photos, you are told before any drilling and can say no.
When can the work be done?
Keystone is new. Fitting starts in spring 2027 and the diary is open now, so you can send your photos today and pick a date before the first hot week. Ventilation work starts in early 2027.
Which areas do you cover?
Keystone is based in Hornchurch and works across Redbridge, East London and Essex.
Can it heat as well as cool?
Yes. Modern air conditioning is a heat pump: the same unit cools the room in a heatwave and warms it in winter.

Contact

Details that help

  • Which room stays cold
  • Whether you want it mainly for heating or for both seasons

Add up to 5 photos of the job.