Decentralised heat recovery ventilation
STIEBEL ELTRON VLR 70 S / VLR 70 L.
Decentralised through-wall heat recovery ventilation installed in pairs — suited to retrofit in apartments and small commercial properties up to approx. 100 m².
Retrofit
Apartments
Small commercial
Key data
| Airflow | 10–70 m³/h per unit |
| Heat recovery | Up to 92% |
| Wall thickness | 100–300 / 300–550 mm |
| Sound power | 35 dB(A) at 20 m³/h |
Suitability
Before you select it.
Check the installed duty
Confirm airflow at the required external pressure, acoustics, access, duct layout and controls. Published maximum recovery figures are not a guarantee of installed performance.
Confirm the exact supply
Model, accessories, filters, controls, availability and lead times are confirmed in the quotation.
Design and installation
Design, installation and commissioning are separate unless expressly included. Ventilation design support is available.
Specifications
Manufacturer data.
From the STIEBEL ELTRON Australia product page, checked 5 November 2026. Manufacturer data may change — check the current data sheet before ordering.
Installed in pairs; up to 8 units can be connected together.
| VLR 70 S | VLR 70 L | |
| Air volume flow | 10–70 m³/h | 10–70 m³/h |
| Heat recovery | Up to 92% (product overview) | Up to 92% (product overview) |
| Wall thickness | 100–300 mm | 300–550 mm |
| Min. outlet aperture | ø 200 mm or 185 × 185 mm | ø 200 mm or 185 × 185 mm |
| Filter class | ePM1 ≥ 50% (F7) | ISO Coarse > 30% (G2) | same |
| Sound power level | 35 dB(A) at 20 m³/h | 35 dB(A) at 20 m³/h |
| Max. power consumption (8 units) | 92 W | 92 W |
| Connection | 1/N 100–240 V 50/60 Hz | same |
| Dimensions (H × W × D) | 285 × 360 × 590 mm | 285 × 360 × 780 mm |
| Weight | 5.2 kg | 5.2 kg |
Downloads
Data sheets & guides.
Documents open from STIEBEL ELTRON Australia.
How to buy
Choose your route.
Trade & installers
Request pricing, availability and lead times for your project.
Homeowners & projects
Not sure the VLR 70 S / VLR 70 L suits your building? Start with ventilation design advice.
Quotation
Need pricing for the VLR 70 S / VLR 70 L?
Tell us the model, quantity, delivery postcode and timing. We’ll confirm the supply and next steps.