It reduces indoor air pollutants especially from new carpet, hardwood, paint, cabinets, doors & trims, plastics, insulation, etc, etc.
If you are sensitive or have allergies you will find these units very helpful in reducing congestion.
And it operates in a balanced way, so there is equal amounts of air into the home as are exhausted out
You will spend about $3500 on an HRV.
But wait - you get more than just clean fresh air, it also saves you enegy.
If you have a $200,000 mortgage and add a $3500 HRV your mortage goes from $1163.21 to $1183.57 (based on a 25 year, 5 yr fixed term @ 5%)
That increases your monthly payment by $20.36
BUT - your yearly energy costs drop by $255.70 or $21.31 per month SAVINGS.
Net saving each month day 1 is $0.95 or a free HRV!
Prior to the changes to the building code requiring energy efficient designs, houses typically had a PVF ( Principal Ventilation Fan). The fan would only activate when you manually switched it on.
Without it on, the furnace of a sealed combustion system (high efficiency heating) will only intake air, producing a high indoor static air pressure. This can force interior humid air outward into the walls and attic spaces.
Always run this switch through the winter - 24/7
You can also upgrade from a PVF to an active HRV
Copyright Qualistat 2009-2018