Heat recovery ventilator / Guides

Passive Solar Home design at it's best - Kenogami House - EcoHome
Passive solar home design

Ecohome Kenogami House wins Home of the Year Award

...heat powered by a high efficiency gas boiler 84% efficient Zehnder Novus 300 ERV (Energy Recovery Ventilator) While similar in concept, an ERV (Energy Recovery Ventilator) was chosen over an HRV (Heat Recovery Ventilator) , as they are particularly well suited to extreme northern climates. Air is able to suppor...

Solar panels power the Kenogami House in Saguenay, Quebec
Renewable energy

The Kenogami House: Energy systems at the cutting edge of innovation

...heat pumps in this house, an 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,...

Heat Recovery Ventilation - Lunos video
HRV and ERV

Lunos ductless air exchanger

...heating. Heat Recovery Ventilators (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...

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

Choosing between an HRV and an ERV

...ventilator core. Note that outgoing stale air and incoming fresh air never mix in the heat recovery process; they simply pass in separate channels in the ventilator core, the heat exchanger, allowing an exchange of heat through conduction. The 'efficiency rate' of an HRV unit determines how much energy will be save...

The importance of Cleaning HRV intakes
HRV and ERV

How to keep your HRV clean and operating efficiently

...heat recovery ventilator) clean would be a good thing to keep high on the priority list. When I say ‘many of us’ are guilty of slacking off a bit, I include myself in that group, but after a recent discovery I will up my game a bit. I have usually inspected and cleaned the filter on my HRV about once a year, likely a...

Built to ENDURE: the Net Zero Heat Kenogami House
Efficient home design

The Kenogami House: designed to ENDURE

...Recovery Ventilator rated at 94% efficiency 225 kg per sq.ft. of thermal mass to store heat and balance interior temperatures Alvia exterior automated blinds Non-toxic environment: It has been estimated that in North America the average person will spend approximately 90% of their time...

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

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

...heating, with an indirect water heater powered by our propane boiler (see post about our heating system here ). Our boiler has a set of heating loops that come off of it, and one of those loops goes inside the water tank. A heat exchanger consisting of a set of copper coils containing the heated glycol pass heat to the...

Passively-heated off-grid LEED house in Low, Quebec
Off-grid and Net-Zero Housing

Off-grid living blog: a firsthand account of building and living in a remote area

...heat into the ground or concrete walls slower. All the windows in the house have fiberglass frames, are triple-paned with argon gas, and have an insulating value of roughly R-5. The windows facing south were all chosen to allow in more of the sun's heat ( called solar heat gain coefficient, SHGC ), whereas windows fa...

Crawlspace radon barrier installation for radon mitigation
Radon in Homes - Mitigation

Removing radon gas from basements and crawlspaces

...heat recovery ventilator) or ERV unit (energy recovery ventilator ) dedicated to the basement can be very effective. There is a continuous radon monitor called a Radostat that controls ventilation equipment by activating it when radon levels reach a peak 150 Bq. The HRV will kick in to high speed, and once levels have ...

Passive House in Quebec
Passive House

The Passive-Aggressive House - Our History of a Passivhaus Build

...heat out of the floors all winter long. A super-duper heat recovery ventilator is necessary to bring in fresh air while minimizing heat loss. And finally, the structure’s surface-area-to-volume ratio needs to be minimized. None of this involves space-age materials (you can use regular insulation, although an über amo...

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

Ventilation & air exchangers

...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 separated channels that air passes through, a...