Introducing the Lunos e2™ HRV System: Revolutionary Through-Wall Ventilation.
Experience the future of indoor air quality with the world's most compact and efficient decentralized heat recovery ventilator. The Lunos e2™ system operates without ductwork, exchanging stale air for fresh, filtered air while recovering up to 90% of heat energy. Simple to install and whisper-quiet, it’s the perfect solution for both new energy-efficient homes and retrofits.
Heat Recovery Efficiency: Up to 91%
Moisture Transfer: 20–30%
Airflow Rates: 11 / 18 / 22 CFM
Power Consumption: 1.4–3.3 W per unit (depending on airflow)
Specific Fan Power: 0.09 W/CFM
Unit Diameter - Approximately 6.1 inches (154 mm) for the fan unit. This is the diameter of the fan and heat recovery core that slides into the sleeve.
Core Bore Size - 6.3 inches (160-162 mm). This is the required diameter for the hole drilled through the wall to fit the sleeve.
Sleeve Length: Requires a minimum wall depth of 10½ inches. Supplied with a 19.7" (500 mm) sleeve that’s cut to fit during installation
Installation Type: Through-wall (ductless)
Regenerative Heat Exchange Principle:
The e2 Standard operates using a regenerative heat exchange cycle, built around a pbD polymer‑based composite heat accumulator. This innovative core is made from an environmentally friendly, recyclable polymer, engineered to reduce production energy by over 70% and unit weight by more than 50% compared to prior core materials — all while maintaining high heat recovery performance.
During operation, warm indoor air transfers heat to the accumulator during the exhaust phase. When the airflow reverses, incoming fresh air passes through the warmed core and absorbs that stored heat before entering the room. This cyclical process enables efficient heat recovery — delivering balanced ventilation with minimal energy use and a lower environmental footprint.
CSA 22.2 Electrical Safety
CSA 439 Performance of Heat/Energy-Recovery Ventilators (in process- expected shortly)
Compliant With: RoHS, WEEE, EnEV, DIN 1946-6
Tested To: DIBt and DIN 308 standards
Passive House Compatible: Used in low energy houses