Air exchanger / Guides

DIY air exchanger installation video
HRV and ERV

DIY Lunos HRV air exchanger installation video

...air is directed to a centralized core for a heat exchange before being exhausted from the house. Lunos is a decentralized system with a series of self-contained units, each with their own ceramic heat exchange core. They work in pairs blowing in opposite directions to maintain air pressure, and reversing directions eve...

Heat Recovery Ventilation - Lunos video
HRV and ERV

Lunos ductless air exchanger

...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 Lunos wall insert air exchangers that i...

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

...air tested and discovered that the radon levels in the basement were significantly higher than Health Canada’s recommended safe levels. Despite having an air exchanger for the upper living areas, the natural stack effect of warm air rising means that air from the basement will find its way to the upper floors. Three ...

Solar Radiant Heated Floor Slab Kit
Delivery: radiant, forced-air and decentralized

Solar heated radiant floor with radiant heated hot water for a site with problem soil - expansive clay

...air rather than liquid. There are many advantages to air-heated radiant floors over hydronic radiant floors , but none greater than the ability to inject solar-heated air into the thermal battery which is the concrete slab floor. Passive Solar air-heated radiant floor slab on grade forming kit © Ecohome Solar a...

PSI

Case Study: Kenogami House, Saguenay, Quebec

...air exchanger rated at 93% efficiency and along with interior appliances is powered by a 5.4 watt photovoltaic solar panel system. The ceiling is insulated to R151; walls have a 'true' R value rating of 80, and the energy load needed for heat on the coldest days is estimated at 12 W per square meter or a total of 210...

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

Choosing between an HRV and an ERV

...air the way they used to be; we now build them as airtight as we can, especially Passive House or LEED certified homes. This makes mechanical ventilation essential in these high performance home by installing either HRV or ERV Ventilation Exchanger Systems . The key questions are: How much fresh air is enough? ...

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!"

...Air Tightness in Houses - All about Balancing Air Pressure in the Home We go on incessantly here about the importance of air barriers in home construction to reduce air leakage , but no matter how hard you worked to make a house airtight, if the pressure isn't balanced you will be sucking air in or forcing it out and...

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

...air barrier is that it is solid. A polyethylene or foil air barrier can be easily pierced by the slightest touch with a sharp tool, without even realizing it. In contrast, it is unlikely you will put a hole in an OSB air barrier that was not intentional, or at least unnoticed. Blower door tests The air seal of a bu...

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...