Helty Flow 800 (Version Pure) Decentralised Commercial MVHR System for Schools & Offices
Helty Flow800 Decentralised MVHR Ventilation Unit (Version Pure)
Core Advantage: Simplified, Clean Installation and Quick Retrofitting
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Minimal Structural Impact: This decentralised ventilation system does not require long, bulky ductwork throughout the space. Installation requires drilling just two 250 mm diameter holes through the exterior wall (2x Ø250 mm).
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Significant Cost Savings: Eliminates the budget needed for ductwork design, materials, and installation, as well as the need to hide ducting behind drywall or suspended ceilings.
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Fast Commissioning: Installation takes minimal time and avoids long operational downtime, making it ideal for active commercial or residential spaces.
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Ideal for False Ceilings or Exposed Mounting: Compact design (1320 x 392 x 1020 mm) allows seamless integration into false ceiling spaces or direct exposed mounting with optional steel covers.
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CLICK FOR MORE DETAILS – TECHNICAL DATA SHEET
Detailed Overview of Capabilities and Technological Features
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High Performance and Flexible Airflow Control:
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Wide airflow adjustment range: 300 / 350 / 500 / 600 / 700 / 800 m³/h.
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Multiple operating modes: ultra-quiet Night Mode, 4 standard speeds for everyday comfort, and a Hyperventilation (Boost) mode for rapid airing out.
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Advanced Energy Efficiency and Recovery:
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Enthalpic Cross-Flow Heat Exchanger: Recovers sensible heat (80% thermal efficiency) and moisture, preventing indoor air from drying out in winter.
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Energy Efficiency Class: A+ (Cold climate) / A (Temperate climate) / E (Warm climate).
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Specific Energy Consumption (SEC): -77 kWh/(m²·year) for cold / -41.3 kWh/(m²·year) for temperate / -18.1 kWh/(m²·year) for warm climates.
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Quiet Operation and Acoustic Comfort:
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Sound Pressure Level: 28.6 / 31.3 / 40 / 42 / 44.5 / 49.5 dB(A).
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Sound Power Level: 43.5 / 46.2 / 54.9 / 56.9 / 59.4 / 64.4 dB(A).
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Multi-Stage Air Filtration and Monitoring:
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Supply Air (Intake Filter): Dual-stage filtration via Coarse 80% (G3) + high-efficiency ePM1 80% (F9) filter, stopping up to 90% of PM10 and 80% of PM2.5.
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Extract Air (Extraction Filter): Coarse 80% (G3) filter protecting internal components.
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Smart Monitoring: Automatic filter check with a pressure sensor that continuously monitors clogging and triggers filter replacement alerts.
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Smart Control & Functions:
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Comfort function included.
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Compatible with remote control, removable STD / Cloud control panels, and Helty Home app.
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Full Technical Specifications and Features (Version STD)
| Parameter / Feature | Value / Details |
| Dimensions (W x H x D) |
1320 x 392 x 1020 mm |
| Net Weight |
75 kg |
| Wall Penetrations |
2x Ø250 mm holes |
| Airflow Rate |
300 / 350 / 500 / 600 / 700 / 800 m³/h |
| Flow Adjustment |
Night + 4 stages + Hyperventilation |
| Power Consumption per Speed |
22 / 26 / 46 / 61 / 90 / 138 W |
| Specific Fan Power (SPI) |
0.07 / 0.07 / 0.09 / 0.1 / 0.13 / 0.17 W/(m³/h) |
| Power Supply Parameters |
Mains: 230 V AC / Internal operating voltage: 24 V DC (Max 0.7 A) |
| Heat Exchanger |
Enthalpy cross-flow |
| Heat Recovery Efficiency |
80% / 76% / 74% / 70% / 69% / 64% |
| Free-Cooling / Free-Heating |
Electronic automatic bypass included |
| Special Modes |
Night Mode, Hyperventilation, Comfort Function |
| Sensors & Alerts |
Humidity sensor, Filter replacement alert (pressure sensor), CO2 sensor and VOC index
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| Control & Interface Options |
Removable STD / Cloud panel, Remote control & Helty Home app compatible (Option) |
| BMS / Smart Home Integration |
Integrated RS485 serial port (Modbus RTU protocol) included |
| Supply Air Filter |
Coarse 80% (G3) + ePM1 80% (F9) |
| Extract Air Filter |
Coarse 80% (G3) |
| Energy Efficiency Class |
A+ (Cold) / A (Temperate) / E (Warm) |
| Specific Energy Consumption (SEC) |
-77 (Cold) / -41.3 (Temperate) / -18.1 (Warm) kWh/m²a |
| Included Accessories |
Card with QR-code digital manuals, MVHR filters |
| Product Code |
1VMC04022 |
CLICK FOR MORE DETAILS – CATALOGUE
CLICK FOR MORE DETAILS – TECHNICAL DATA SHEET
You can install HELTY yourself or use our installation service.
Delivery & Return
Shipping Policy
Enjoy Free UK Delivery on Orders Over £199!
Enjoy free shipping on orders over £199 at Redlakecompany.co.uk! Most items qualify for free delivery, with shipping costs for Gloss Fire products calculated at checkout.
You can choose to have your order shipped with a variety of carriers, including DHL, UPS, Parcelforce, and DPD. However, we reserve the right to use a different courier if your parcel exceeds the size limits of the selected carrier.
Most orders placed before 3:00 PM are shipped the same day.
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Shipment method |
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DHL, UPS, Palletforce |
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Estimated delivery time |
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Estimated delivery: 1–3 working days. Exact delivery times are shown at checkout |
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Shipping cost |
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£0.00 for orders over £199 |
Shipment confirmation & Order tracking
You will receive a Shipment Confirmation email once your order has shipped containing your tracking number(s).
International Shipping Policy
We do ship outside the UK. For detailed information contact us info@redlakecompany.co.uk
Returns Policy
"Love it or Return it Guarantee"
At Redlake, we want to ensure that you receive the product that’s perfect for you. We understand that choosing the right item can be challenging, and sometimes things look different once they’re in your home.
That’s why we offer a free 30-day, no-questions-asked return guarantee. If you’re not completely satisfied with your order, you can exchange it for any other product or simply return it for a full refund.
Contact us by live chat or email info@redlakecompany.co.uk and request the appropriate returns address. To be eligible for a return, your item must be in the same condition that you received it, in its original packaging. You’ll also need the receipt or proof of purchase.
If you wish to return an item, please review our return policy.
View return policy.
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