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 (depending on model/setting)
Power Consumption: 1.4–3.3 W per unit (depending on airflow)
Specific Fan Power: 0.09 W/CFM
Unit Diameter: e2 short 7 1⁄2" and e2 standard 10 1⁄2"
Sleeve Length: Adjustable for wall thicknesses from 12" (300 mm) up to 19.5" (500 mm); extension kits available for thicker walls
Installation Type: Through-wall (ductless)
Ceramic Heat Exchanger: Compact regenerative core made of advanced composite material
Ductless Installation: Simple, direct wall penetration — no bulky ductwork required
Quiet Operation: Sound levels as low as 16.5 dB, ideal for bedrooms and living spaces
Smart Control: Compatible with Lunos Smart Comfort Control for humidity-responsive, multi-unit operation
Frost Protection: Built-in freeze protection via automatic airflow reversal
Filtration Options: Includes standard filter; optional MERV 7 or MERV 13 pollen and fine dust filters available
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
Lunos eGO™ HRV: Your Compact, All-in-One Ventilation Solution
The Lunos ego™ is an ultra-compact, ductless heat recovery ventilation (HRV) system, uniquely engineered for optimum air quality in small or single-room spaces such as bathrooms, kitchens, WCs, or rooms up to approximately 150 sq. ft.
Unlike the paired operation of the Lunos e$^{2}$ system, the ego unit contains two fans in a single device, allowing it to simultaneously supply fresh air and exhaust stale air, all while utilizing a regenerative ceramic core to recover heat.
Operating Principle Single-Unit (Simultaneous Supply & Exhaust) Uses two fans operating in opposite directions, eliminating the need for a pair of units. Primarily for wet rooms (bathrooms, kitchens).
Airflow Rates (CFM)- Heat Recovery Mode: ≈3/6/12 CFM. Corresponds to ≈5/10/20 m3/h
Airflow Rates (m3/h)- Heat Recovery Mode:5/10/20 m3/h Corresponds to ≈3/6/12 CFM
Exhaust Boost Mode (CFM) Up to ≈27 CFM Corresponds to 45 m3/h (For quick moisture/odor dissipation)
Exhaust Boost Mode (m3/h) 45 m3/h
Heat Recovery Efficiency (Max.) Up to 85% to 92%- Depends on the specific model and testing protocol (e.g., 85% tested with DIN 308 / DIBt protocol). Newer units with pbD heat exchanger may reach up to 92%.
Heat Supply Level to EN 13141-8 - 75% to 91%Varies based on model and reference volume flow. An older spec cites 75%, a newer one cites up to 91%.
Moisture Transfer (ERV) 20%−30%The regenerative core provides some humidity recovery.
Power Consumption (W)- 1.0−4.9 W per unit. Low power usage across operating modes.
Specific Fan Efficiency (SFE)- 0.29 W/cfm. Also specified as 0.17/0.2 Wh/m3.
Minimum Noise Level- As low as ≈16.8 dB (Sound pressure level)Range is generally 16.8 dB to 24.0 dB in heat recovery mode. Exhaust mode is louder, up to 38.1 dB.
Energy Efficiency Class- A (or A+) Achieves Energy Efficiency Class A according to the Ecodesign Directive (some variations are A+).
Filter Class- G3 (MERV 5)Regenerable replacement filters are standard. Pollen (MERV 9-10) filters are optional.
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.
Installation Sleeve Length -
Standard Sleeve:19.7 inches (500 mm) cut to length. Suitable for a range of wall thicknesses, generally up to 19.7 inches.
Short Sleeve- 12.5 inches (317 mm) cut to length. Suitable for wall depths from 8 inches (200 mm) to 12.5 inches (317 mm).
Minimum Wall Thickness
Standard Fan: 12 inches (300 mm)Required minimum wall depth for the Standard Fan/Sleeve option.
Short Fan: 8 inches (200 mm)Required minimum wall depth for the Short Fan/Sleeve option.
Installation Type: Through-wall (Ductless)The unit is a decentralized Heat Recovery Ventilator (HRV) that installs directly into an exterior wall.
Core Technology
Regenerative Heat Exchange Principle: The system operates on the principle of regenerative heat exchange, similar to the Lunos e² units.
It uses a ceramic core (acuvent storage stone) with a honeycomb structure to store thermal energy.
During one part of the cycle, exhaust air transfers its heat to the ceramic core.
During the reverse cycle, incoming fresh air absorbs the stored heat from the core.
High Heat Recovery Efficiency: The system is highly energy-efficient, with tested heat recovery efficiencies of 81.4% to over 86% (depending on the fan length/model).
Low Power Consumption: It features very low power consumption, starting from as low as 1.0 W (watt).
Quiet Operation: It is designed for quiet operation, with sound levels ranging from about 16.8 dB to 24.0 dB in heat recovery mode.
Compact Size: The eGO is noted for its small dimensions, positioning it as one of the world's smallest decentralized fans with heat recovery in the two-channel device class.
CSA 22.2 Pending
CSA 439 Pending
Compliant With: RoHS, WEEE, EnEV, DIN 1946-6
Tested To: DIBt and DIN 308 standards
Passive House Compatible: Used in low energy houses
High-Capacity Ventilation Built for Tough Conditions
The Lunos e2 60 is a powerful, decentralized Heat Recovery Ventilation (HRV) system that takes the best features of the standard Lunos line and turbocharges them. It’s engineered to deliver a continuous supply of fresh, filtered air to your home or commercial space.
The system works in synchronized pairs, using a regenerative ceramic core to reverse the airflow periodically, recovering up to 90% of your indoor heat.
Heat Recovery Efficiency Up to 97% (Maximum)Tested according to EN 13141-8 (Max. instantaneous value).
Heat Recovery (Reference): 83% at 60 m3/h (35 CFM)Efficiency decreases as the air flow rate increases.
Moisture TransferApprox. 20−30% (ERV function)The ceramic core provides some latent (humidity) recovery, especially in winter.
Airflow Rates5 to 60 m3/h (per unit)Continuously adjustable, with declared volume flow up to 60 m3/h (≈35 CFM).
Maximum Airflow≈35 CFM (or 60 m3/h)Corresponds to the maximum specified volume flow.
Power Consumption0.4−3.3 W (per unit)Extremely low power consumption across the operating range.
Specific Fan Power (SPI)As low as 0.09 W/(m3/h)An industry-leading value for energy efficiency.
Wind Pressure StabilityClass S1 (at 20 Pa)Achieves the highest class for stability against wind and back pressure per EN 13141-8.Export to Sheets
Unit Diameter: e2 short 7 1⁄2" and e2 standard 10 1⁄2"
Sleeve Length: Adjustable for wall thicknesses from 12" (300 mm) up to 19.5" (500 mm); extension kits available for thicker walls
Installation Type: Through-wall (ductless)
Ceramic Heat Exchanger: Compact regenerative core made of advanced composite material
Ductless Installation: Simple, direct wall penetration — no bulky ductwork required
Quiet Operation: Sound levels as low as 16.5 dB, ideal for bedrooms and living spaces
Smart Control: Compatible with Lunos Smart Comfort Control for humidity-responsive, multi-unit operation
Frost Protection: Built-in freeze protection via automatic airflow reversal
Filtration Options: Includes standard filter; optional MERV 7 or MERV 13 pollen and fine dust filters available
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