Booking surveys for next week across Greater Manchester, Cheshire and Lancashire
Ventilation and air quality
Air conditioning recirculates what is already in the room. If the problem is stuffiness, cooking smells, condensation or thirty people in a studio, what you need is fresh air coming in and stale air going out. We design and fit both, usually at the same time.
Ventilation and air conditioning solve different problems. Air conditioning changes the temperature of air already inside the building. Ventilation replaces that air with fresh air from outside. A room can be perfectly cool and still feel stale, because carbon dioxide, humidity and smells build up regardless of temperature.
What we fit
MVHR
from £5,200
Continuous fresh air into the occupied rooms and continuous extract from the wet rooms, with a heat exchanger between them so you keep the warmth you have already paid for. Usually specified alongside a commercial cooling system rather than on its own.
Canopies and supply
from £6,500
A canopy sized to the equipment underneath it, ducted to a fan that can actually shift the volume, and a tempered supply putting the same amount of air back so the kitchen is not running as a vacuum.
Wet rooms and workshops
from £450
Continuous low rate extract in bathrooms, utility rooms and salons, sized properly and ducted to outside rather than into a loft where the moisture just moves somewhere else.
AHUs and fine filters
per project
Air handling units that filter, heat, cool and distribute in one plant item, plus finer filter grades where pollen, dust or clinical requirements mean the standard cassette is not enough.
Common questions
No, and this catches people out constantly. A standard split system recirculates the air already in the room, cooling it and filtering out dust as it passes. It removes no carbon dioxide, no cooking smells and no moisture from the building. If a room feels stuffy rather than warm, cooling it harder will not fix it. You need ventilation.
Mechanical ventilation with heat recovery. Stale air is extracted from the building and fresh air is drawn in, and the two streams pass either side of a heat exchanger so the outgoing air warms the incoming air without the two ever mixing. Recovery rates of 85% to 90% are normal.
It is worth it in an airtight building, where opening a window is the only alternative and throws away all the heat you have paid for. In a draughty Victorian terrace with gaps everywhere, extract fans usually make more sense for the money.
Usually, and the cause is often not the fan. A canopy pulling air out of a sealed kitchen has to get replacement air from somewhere, and if there is no make up air supply the fan is fighting a vacuum. Doors get hard to open, the extract rate collapses and the room fills with heat.
The fix is a make up air system supplying tempered fresh air at the same rate the canopy removes it. We survey the canopy, measure the actual extract rate and size the supply to match.
Often, because most domestic damp is condensation rather than water coming in. Moisture from cooking, showering and drying washing has to leave the building, and in a house with sealed windows and no working extract it lands on the coldest surface it can find. Continuous low rate extract in the wet rooms deals with the cause rather than wiping the symptom off the wall.
Indoor units take a washable pre filter as standard, which catches dust and hair but not pollen. Most manufacturers offer finer filter cassettes that fit the same units, and for treatment rooms or anywhere with a genuine clinical need we specify separate HEPA filtration rather than relying on what came in the box. Whatever is fitted needs cleaning on schedule or it becomes a restriction rather than a filter.
Free survey
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Prefer to talk it through
07932 607335