Conservatory air conditioning in Ilford

Why does a glass room need more cooling than its floor area suggests?

Because sizing tables assume walls that keep the sun out. iHeat notes that big expanses of glass, south-facing ones most of all, push up the output required, and a conservatory may be glazed on three sides and overhead. So we size from the area of glass, the direction it faces, the roof material and whatever shade exists, not from square metres alone. Blinds, a solid or tinted roof and solar film all reduce the load, and a smaller load means a smaller unit. The sizing guide covers ordinary rooms for comparison. Source: iHeat.

Where do the indoor and outdoor units go?

The indoor unit normally goes on the original back wall of the house, the only solid surface in the room with any height; a low console on a dwarf wall is the alternative. The pipes pass through or along that wall to an outdoor unit at the side or back of the house. That rear position matters in a conservation area, where permitted development rules out the street-facing walls and roof, and anywhere closer to the road than the building's own front. Source: Planning Portal.

What applies on the Bungalow Estate and in other conservation areas?

Extra controls, so ask before you build or fit. Redbridge has 16 conservation areas. One of them, the Bungalow Estate south of Seven Kings, between Ilford and Goodmayes, was designated as Mayfield on 3 October 1991 and has had an Article 4 direction since 1987 controlling extensions, porches and roof alterations, which reaches a new conservatory; the council also lists a further direction for the estate from 2017. Whether either affects an outdoor unit depends on its wording, so check with Redbridge before relying on permitted development there. Anywhere in a conservation area, the rear and the side away from the street are where to look. A listed building has no permitted development right at all, and work that affects its character needs listed building consent. The borough's protected areas are described under heritage and planning in Ilford. Sources: Redbridge Council; Redbridge Council, Bungalow Estate appraisal; Planning Portal; Listed Buildings Act 1990, s7.

Can the same approach cool a garden office or studio?

Yes, if the building is insulated; a thin timber shed loses cooling as fast as it gains heat. Two things differ from a conservatory. Power: the outbuilding has to have a cable big enough for the load, and a fresh circuit out to the garden counts as notifiable work under Part P. Position: garden rooms tend to sit near a boundary fence, so the outdoor unit may end up close to a neighbour's house. Since 29 May 2025 there is no rule keeping a heat pump a metre from the boundary, but the 37 dB(A) test at the neighbour's nearest window still has to be passed. Sources: IET; Baxi; Grant UK.

Is heating a conservatory with it worth the electricity?

Far more than heating it with a plug-in heater. Running in reverse, the unit turns each kilowatt-hour of electricity into several of heat: the Energy Saving Trust gives typical seasonal heating performance as above 4, where a fan heater manages exactly 1. That makes a cold glass room usable on winter mornings, and there are plenty of those: at Greenwich, about six miles away, air frost averages about 23 days a year. Glass loses heat quickly, so blinds drawn after dark help in winter too. The running costs guide has the sums. Sources: Energy Saving Trust; Met Office.