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Envira Alternate Flow Heat Recovery Fan
ENVIRA: Designed to Stop Black Mould Before It Starts
Black mould doesn’t appear overnight, it’s the result of trapped moisture, condensation and poor airflow, often hidden until its to late.
Envira will stop your home quietly rotting from the inside out. Fresh air in, black mould out.
Ideal for bedrooms, lounges, and tight retrofits, this smart solution protects homes, cuts maintenance issues, and ensures compliance with ventilation standards.
It works quietly in the background, so you don’t end up with damp walls, musty smells, or tenants who give up and switch it off, making things even worse.
Speak to our ventilation team
Mould Prevention Isn’t a Fix, It’s a Strategy
By the time black mould is visible, it’s already done its damage.
The ENVIRA alternate flow heat recovery fan prevents the problem from happening altogether.
It monitors humidity and automatically responds to excess moisture before it can settle on cold surfaces.
No manual control needed.
No after-the-fact fixes.
Just smart ventilation all year round.
Keep the Heat, Lose the Damp
Opening a window to ventilate means watching paid-for heat disappear.
ENVIRA alternate flow heat recovery fans changes that.
Its energy recycling design extracts stale, moist air while recovering warmth, so you or tenants enjoy dry, fresh air without sacrificing comfort or energy efficiency.
Less mould, lower bills, fewer complaints.
Awaab’s Law Ready
The ENVIRA-50 helps landlords and housing providers comply with Awaab’s Law and Part F of Building Regulations.
By proactively managing moisture and improving indoor air quality, it meets the latest expectations for mould prevention—without disrupting tenants or requiring major upgrades.
Quiet, Unobtrusive, Always On.
Ventilation shouldn’t be something you hear—or have to remember to use.
With ultra-quiet EC motors and smart controls, the ENVIRA-50 runs in the background with minimal noise and zero tenant input.
No buttons to push, no switches to forget. Just consistent performance, every day.
Perfect for Tight Spaces and Retrofits
At just 160mm in diameter, the ENVIRA-50 is compact enough for most wall cavities and discreet enough for living spaces.
It’s ideal for upgrading existing housing stock or meeting retrofit targets where ducting or MVHR systems aren’t viable.
Install it and forget it—it gets on with the job.
A Healthier Home, Without the Hassle
From protecting paintwork and plaster to safeguarding respiratory health, proper ventilation makes a visible difference.
The ENVIRA-50 delivers that benefit without complication—ideal for social housing, PRS landlords, and homeowners who want to stop mould before it starts.
