Envira 50 – Single Room Alternate Flow Heat Recovery Fan for Mould Control
User Guides & Data Sheets
- Up to 75% heat recovery: A high-efficiency ceramic core captures most of the warmth from outgoing air and returns it to the room—reducing heating costs and eliminating cold spots.
- Automatic humidity-triggered boost: The onboard sensor senses rising moisture and instantly switches to high speed airflow, preventing mould and condensation without any manual adjustments.
- Ultra-quiet, ultra-low power: Whisper-quiet at just 16 dB at 3 m and drawing only 2.3 W, it runs continuously in the background without disturbing you—or spiking your energy bill.
- Slim, duct-free retrofit design: Slimline wall-mounted unit fits neatly into a single 140 mm core-drill opening, delivering balanced heat-recovered ventilation with no disruptive ductwork.
- Full remote control with lockable settings: Adjust trickle, boost, night-mode, and humidity sensitivity from the remote—then lock settings for tamper-proof compliance in rental properties.
The ENVIRA-50 is a compact, high-performance alternate flow heat recovery fan engineered for single-room applications.
Designed to actively combat mould, extract stale air, and recover valuable heat, this unit ensures a fresh, healthy indoor environment all year round—with minimal energy use and ultra-quiet operation.
It’s ideal for bedrooms, living spaces, or retrofits where wall space is limited.
With smart humidity control and energy-saving EC technology, it works hard in the background so you don’t have to.
This compact system quietly manages humidity, prevents mould and damp, and recovers heat that would otherwise escape—delivering healthier air and lower energy bills year-round.
Why choose the ENVIRA-50 if you want a ventilation solution that does more than just move air.
Choose the ENVIRA-50 if you want a ventilation solution that does more than just move air. It quietly brings in fresh, filtered air while removing stale, humid air that leads to mould and condensation.
Recovering up to 75% of lost heat, it helps cut energy bills and prevents cold draughts.
The built-in humidity sensor responds automatically when moisture rises, keeping your room dry and mould-free without adjustment.
With ultra-low energy use, near-silent running, and easy remote control, it’s perfect for bedrooms, living spaces, and retrofits—delivering clean, quiet, efficient air every day.
ENVIRA | 45 | 50 | 60
The ENVIRA-50 operates in a continuous cycle that balances indoor air while recovering heat that would otherwise be lost. Every 60 seconds, the fan reverses direction.
During the extract phase, warm, stale air is drawn out of the room and passed through a high-efficiency ceramic heat exchanger, which absorbs the heat and moisture.
In the supply phase, fresh outdoor air is pulled in through the same ceramic core, collecting the stored heat and entering the room gently pre-warmed.
This intelligent airflow system ensures consistent ventilation, reduces energy loss, and maintains a healthier indoor environment—all without ductwork or disruption.
Can I change the speed? Yes — choose between Trickle for continuous background ventilation and Boost when humidity rises. It’s perfect for preventing condensation and mould.
How much air does it move? Up to 50 m³/h (14 l/s), making it ideal for bathrooms, bedrooms, and small living spaces where fresh air and moisture control are needed.
How much heat will it recover? Up to 75% of the heat from outgoing air is recovered—so rooms stay warmer while excess moisture is removed efficiently.
How loud is it? Just 16 dB at 3 metres—whisper-quiet even when running constantly. Suitable for night-time use and quiet rooms.
Does it cost much to run?Not at all. It uses just 2.3 watts—less than an LED bulb—so you can run it 24/7 without noticing a difference in your energy bill.
Whats the energy rating?: It’s highly efficient, with a Specific Fan Power of just 0.32 W/l/s—meaning powerful ventilation with minimal energy use.
The ENVIRA-50 is a discreet, high-efficiency bathroom extractor fan with built-in heat recovery — designed to be as easy to fit as it is effective.
Its slimline profile slots neatly into any external wall, making it perfect for space-limited homes, apartments, and refurbishments where a traditional fan won’t cut it.
Whether you're tackling black mould, condensation, or musty air, the ENVIRA-45 delivers powerful results without turning your home into a building site.
B: 175mm
B1: 186mm
L: 305 - 380mm (adjustable)
L1: 35mm
L2: 86mm
D: 131mm
A 140 mm core drill is recommended to provide adequate clearance and ensure the required 3% downward slope for condensation drainage.
ENVIRA-50 gives you control that fits your needs — whether you're a landlord setting it up for hands-off compliance or a homeowner managing comfort day-to-day.
In rental properties, landlords can lock in airflow and humidity settings to meet mould and damp regulations. Once commissioned, tenants can’t disable or tamper with the system — ensuring consistent protection and full compliance with standards like Awaab’s Law.
In private homes, the remote puts you in charge. Adjust ventilation whenever you like to maintain a healthy environment while keeping energy bills down.
Once installed, the remote allows:
Instant On/Off Turn the fan on or off with a single press. It resumes the last-used settings automatically.
Manual selection Select low (trickle) or high (boost) speed to match your room’s needs.
Automatic boost The fan increases speed automatically when humidity rises above your chosen level.
Adjustable humidity Use the included tool to fine-tune the sensitivity for your space.
Night Mode Dims the LEDs and runs quietly for 8 hours, then returns to normal operation.
The ENVIRA-50 is the perfect solution for anyone looking to improve air quality in a single room without the need for complex ducting or intrusive installations.
It’s ideal for homeowners dealing with persistent condensation or black mould in bedrooms, bathrooms, or utility spaces, and equally valuable for landlords who need a tamper-proof ventilation system that meets the requirements of Awaab’s Law and other housing regulations.
The unit is also well-suited to housing providers seeking energy-efficient, low-maintenance solutions across social housing stock.
For retrofit projects and space-limited developments, its compact design makes it a smart choice where traditional fans fall short. Whether you’re solving a problem or future-proofing your property, the ENVIRA-50 delivers quiet, efficient, and automatic protection—day in, day out.
The ENVIRA-50 is built to meet the demands of modern ventilation standards while addressing the real-world challenges of mould, damp, and poor air quality.
It complies with Part F of the Building Regulations, delivering effective airflow to meet minimum ventilation rates for single-room applications.
Its energy-efficient EC motor and heat recovery capability align with Part L requirements, helping reduce carbon emissions and improve the overall energy performance of dwellings.
In rented properties, the ENVIRA-50 offers vital protection under Awaab’s Law, which requires landlords to act on reports of damp and mould.
With tamper-resistant settings, smart humidity control, and continuous background ventilation, it provides a long-term, low-maintenance solution that protects tenants' health and ensures landlords meet their legal responsibilities.
The ENVIRA-50 is designed with professionals in mind. Its compact form factor, adjustable wall depth, and simple commissioning process mean quicker installs and fewer callbacks.
With no need for ducting or separate controls, it’s ideal for retrofit and refurbishment jobs where disruption must be kept to a minimum.
Everything needed for a smooth installation is included—from the mounting hardware and external grille to the core drill guidance and remote setup tool. The humidity sensor threshold can be adjusted directly during commissioning, and airflow settings can be locked to prevent tampering in tenanted properties.
Whether you're fitting one unit or specifying dozens across a housing stock, the ENVIRA-50 helps streamline your workflow, meet regulations, and deliver dependable long-term performance.
Looking to grow your business with us? Get in touch to find out how to become an Approved Installer and access exclusive support, training, and referrals.
The ENVIRA-50 doesn’t just perform well—it blends in beautifully too.
Whether you're fitting into a modern apartment block, a heritage home, or social housing stock, you can match the external grille to the building façade for a clean, unobtrusive look.
This makes the ENVIRA-50 ideal for both new builds and sensitive retrofit projects where visual impact matters just as much as performance.
The ENVIRA-50 offers a simple, powerful way to protect your home or property from mould, damp, and energy loss—without the disruption of ductwork.
Whether you're a landlord, homeowner, or specifier, our team is here to help you choose the right solution for your space.
Get in touch today to speak with an expert, request pricing, or book your first installation.
| EAN Number | 5056194054447 |
|---|---|
| Energy Rating | A |
| Filter Type | G3 Disc |