Fresh air exchanger / Guides

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

Ventilation & air exchangers

...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 separated channels that air passes through, allowing incoming air to be preheated by exhaust ai...

The importance of Cleaning HRV intakes
HRV and ERV

How to keep your HRV clean and operating efficiently

...fresh air intake vent was entirely plugged While checking the balance of the system they found the fresh air intake vent was entirely plugged with 5 years worth of debris, and the system was starving for air. With only the exhaust operating properly the basement was always depressurized, and was pulling radon-rich ai...

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

Choosing between an HRV and an ERV

...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 provide...

Naugler House: the most energy efficient Passive House design in New Brunswick
Efficient home design

New Brunswick's most energy efficient home is Passive House designed

...exchanger to heat or cool the air entering the HRV. In the winter when the air temperature outside is -25°C, fresh air is warmed to +2°C before it enters the HRV. This eliminates the need of using an electric heater to pre-warm the air. In the summer when the temperature outside is +33°C, fresh air enters the HRV at ...

Building a Passive House that's LEED Certified too - an Owner's Tale
Passive House

An owner/builder's account of building a Passive House

...air being fed into the air exchanger. For additional heat we installed two little mini-split heat pumps (one head on the ground floor and another upstairs) which can extract heat from the outside air down to temperatures as low as -27.7°C. The air exchanger will then take care of circulating the warm or cool air. T...

Interior sheathing as air & vapor barriers in wood frame construction
Air and vapour barriers

Interior sheathing as an air and vapour or vapor barrier

...fresh air, but it should be supplied by properly balanced heat recovery ventilation , not arbitrary holes in an air barrier. Always seal your home as tight as you possibly can and let your air exchanger do the job it was designed to do. Ordinarily there is a lineup of drywall crews, plumbers, cabinet installers, elec...

Off-grid leed home
Off-grid and Net-Zero Housing

Off-grid living blog post 5: appliances, mechanical and other systems

...air out of the house while bringing fresh air in. All sorts of gases can build up inside homes, from cooking, off-gassing from materials, even simple human habitation , and these are vented to the outside when bringing in fresh air. Second, an HRV exchanges heat from the venting air with incoming air in a heat exchange...

Solar panels power the Kenogami House in Saguenay, Quebec
Off-grid and Net-Zero Housing

The Kenogami House: Energy systems in Net Zero Energy Home Design

...air-to-air heat pump that extracts heat from outside air to heat inside air, and an air-to-water heat pump. The air to water heat pump extracts heat from ambient air inside the home and transfers it to the hot water tank, offering efficient air conditioning in summer. As for heat storage, a thermal battery such as th...

Prefab Passive House & LEED Kit Homes for Sale in Ontario & North Eastern US
Concept and design

Prefab Passive House & LEED ready kit homes - the future of buying a new home?

...air exchanger : Allows for a high level of heat and moisture recovery while providing fresh air Range hood for exhausting cooking pollutants (including ultrafine particles) Bathroom fans to manage moisture and prevent the risk of mold growth Central vacuum removes dust and helps reduce allergy symptoms Chosen...

Prefab LEED Passive House Kit Homes the Future of House Building?
Passive House

Prefab Passive House & LEED ready kit homes - the future of home building?

...air exchanger : Allows for a high level of heat and moisture recovery while providing fresh air Range hood for exhausting cooking pollutants (including ultrafine particles) Bathroom fans to manage moisture and prevent the risk of mold growth Central vacuum removes dust and helps reduce allergy symptoms Chosen...

Gas powered tankless water heaters
Plumbing and water heaters

Are tankless water heaters good?

...air from inside the home (instead of outside air) for combustion. These models are not recommended because they draw in and evacuate heat from the home and because a defect in the seal of the combustion chamber could – in the event of flow reversal or depressurisation – lead to a risk of carbon monoxide poisoning. ...