Fresh outdoor air all year round.
The OpenERV TW4:
Provides fresh air during hot or cold weather, without allowing the transfer of heat energy.
Provides a reliable, regulated supply of fresh air.
Is easy to retrofit into any area of any building, even buildings with no ventilation system, or electric heat.
Features these core performance figures:
Very high real-world energy recovery efficiency - 91% sensible, 65% average latent heat recovery.
High fresh air flow rate capability - 60 CFM net actual fresh air in heat recovery mode. 150 CFM in unidirectional mode.
Extremely quiet - 0.2 Sone (~15 dBA) on medium, essentially inaudible on low.
Provides a return on financial investment ~>10x that of photovoltaic panels in many climates like Ottawa, Canada,
~30x greater rate of return on investment, compared with typical, conventional ductless ERV units. Roughly 3x the return on investment compared with typical ducted HRV/ERV units. This is due to the lower purchase price, lower install cost, higher energy savings, and lower net long term cost of ownership.
Doubles as a very quiet, high pressure reversible exhaust/supply fan (120 CFM).
Optional True-HEPA filter, using widely available, standard filters (50 CFM with filter in supply mode)
Designed and built to last for >50 years, for greatly superior return on investment, with no component availability concerns for long term.
Can be configured to work with common home automation systems, including Google Home, Alexa and Home Assistant. This can be used to automatically turn it on with humidity, time of day, etc.
Can be controlled with your phone, or over the internet.
Very low electrical energy consumption - 2 watts on low, 6 watts at maximum power.
Effectively reduces CO2 levels, reduces transmission of airborne pathogens and improves Indoor Air Quality in all metrics.