01 — Our Services
Ventilation that breathes.
MVHR · PIV · Extract · BS EN 16798
The problem
Stale air is the silent damage.
CO₂ over 1,400 ppm is normal in a sealed UK bedroom by 3 a.m.
Modern homes are airtight by code — and that's good for energy bills. But without designed ventilation you trap moisture, VOCs, cooking grease and CO₂ inside the envelope. The cost is mould, headaches, poor sleep and rotted timber that nobody insures against.
A correctly designed ventilation strategy fixes the cause. We don't sell extractor fans — we design air movement.
Three approaches
Pick the one the building actually needs.
MVHR — Heat Recovery
Best for: New build & deep retrofit
Balanced supply and extract through a heat exchanger. Recovers up to 92% of warmth from outgoing air. Continuous, quiet, filtered.
PIV — Positive Input
Best for: Damp & condensation problems
Loft-mounted unit gently pressurises the home with filtered air, displacing moisture out through trickle vents. Single-point install, no ductwork.
Extract / dMEV
Best for: Wet rooms & light retrofit
Continuous low-rate fans in kitchens and bathrooms. Pulls humid air out at source. Cheapest compliant solution under Part F.
Where we work
Three building types. Three briefs.
200+
Homes
Loft conversions, full-house MVHR, basement PIV. Sized per room, ducted in voids, hidden in eaves.
120+
Commercial
Offices, gyms, retail. Heat recovery AHUs, BMS-linked controls, occupancy sensing for energy.
60+
Industrial
Workshops, warehouses, light manufacturing. LEV at source, make-up air, dust extract.
Acoustics is half the job.
A 30 dB system you can hear is a 30 dB system you'll switch off. We model duct velocity below 3 m/s in living spaces and use lined plenum boxes at every grille. The end result: ventilation you forget is running.
Energy
A well-sized MVHR pays back in 4–7 years.
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