Fresh outdoor air all year round.
The TW4 Energy Recovery Ventilator transfers clean outdoor air inside and moves polluted air out, while harvesting 91% of the heat energy - so you get fresh air without the downsides of heating or cooling it.
It is under development, for a few more months.
We are looking for beta testers, if you are interested, please email me at firstname.lastname@example.org.
The OpenERV TW4:
Provides fresh air during hot or cold weather, without the addition or loss of heat to the dwelling.
Provides a reliable, regulated supply of fresh air. Never too much or not enough.
Is easy to retrofit into any area of any building, even buildings with no ventilation system, or electric heat. No ducting needed.
Features these core performance figures:
Ultra high real-world energy efficiency - 91% sensible, 45% average latent heat recovery.
High fresh air flow rate capability - 45 CFM net actual fresh air in heat recovery mode.
Absolutely whisper quiet - 0.2 Sone (~15 dBA).
Excellent long term maintainability, due to it's Open Source nature, and the use of standard components. No planned obsolescence.
Provides a return on financial investment >2x that of photovoltaic panels in many climates like Ottawa, Canada, and more than 10x greater than other ductless ERV units available.
Doubles as an ultra quiet, high pressure reversible exhaust/supply fan, with a 120 CFM maximal flow rate.
Works with an optional True-HEPA filter, using widely available, standard filters, providing 50 CFM of fresh air.
Designed and built to last for the very long term --> 25-50 years, for greatly superior return on investment.
Can be configured to work with common home automation systems, including Google Home and Alexa. This makes any desired combination of scheduling of on/off/power level changes, control based on humidity, CO2 levels, remote switches or centralized control practical using existing products.
Can be controlled with your phone or over the internet.
Effectively reduces CO2 levels, reduces transmission of airborne pathogens and improves Indoor Air Quality in all metrics.