HRV / Green Building & Sustainable Home Renovation Information & Advice

Problem areas of air leakage in a home and blower door test being cond
Air and vapour barriers

Airtight construction of homes is essential: "your house sucks." "Oh yeah? your house blows!"

...HRVs: Heat recovery ventilators (HRV's) need to be professionally balanced in order to keep an even air pressure. Odds are if you haven't had it balanced it is most certainly providing too much or too little air compared to the amount being exhausted. Bathroom fans: If they are designed to run off a humidistat (a switc...

DIY air exchanger installation video
HRV and ERV

DIY Lunos HRV air exchanger installation video

...HRV and ERV home ventilation systems. Find all you need about indoor air quality in the Ecohome Green Building Guide, or see these pages: How to maintain safe indoor air quality in homes How to choose between an HRV and ERV ventilation system Building guide page: Understanding home ventilation Find HRVs and ERV...

Lunos Ductless Heat Recovery Ventilation HRV Lunos video
HRV and ERV

Are ductless HRV air exchangers any good?

...HRVs) are an essential component of any air-sealed high performance home, bringing in fresh air and removing moisture. An HRV uses the heat in stale exhaust air to warm incoming fresh air. Until now, this has meant a centralized heat transfer core and a network of ducts feeding and drawing air throughout the home. With...

How to choose between an HRV and ERV system
HRV and ERV

Choosing between an HRV and an ERV

...HRV or ERV ventilation exchanger systems. The key questions are: How much fresh air is enough? How much fresh air comes in through the building envelope? What is the difference between an ERV and an HRV? How to choose between an HRV and an ERV? How much fresh air is required in homes and the best way to provi...

Condensation on windows leads to mold & mildew in homes, ERV & HRV systems help
Ventilation

Ventilation & air exchangers

...HRV? Mechanical ventilation systems are known as heat exchangers, HVACs (Heating, Ventilation and Air Conditioning) or HRVs (Heat Recovery Ventilators). The point of these systems is to remove moisture and provide fresh air to your home that is pre-heated by the outgoing air. © Van EE The core of an HRV has small sep...