Difference between HRV and ERV / Guides

Passive House certification - PHI or PHIUS? The Spring House Passive House
Passive House

Everything you need to know about Passive House certification

...ands of years . When early man was cold and it was sunny out he sat in the sun, when he was cold and it was overcast he sought shelter and lit a fire, unless of course it was sunny and he was too hot - and then he sought shelter too! The difference with the extraordinary and pioneering Conservation House in Northwest...

Condensation on windows in our homes - why is it there? - how to stop it?
Walls and Roofs

Condensation on windows is a pain but is it a problem & how to stop it?

...between an HRV or ERV unit, see here . If in a cold climate, it’s also a great idea to fit a low level evacuation pipe on the HRV or ERV unit rather than a roof vent that can freeze up and be hard to check and keep clear. Fit a high efficiency and appropriately sized dehumidifier – Once everything has been checked an...

Earthship in Taos, New Mexico, shame they don't work in cold climates
Concept and design

Do Earthships work in cold climates?

...and experience of many owners tells us that up to 70% of those days will include extended periods of over and under-heating - an Earthship is often hotter than comfortable between 10am and 7pm in summer and colder than comfortable between 7pm and 9am in winter." -The myth of thermal comfort, from Hacking The Earthshi...

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

Ventilation & air exchangers

...ERV system pre-cools and dehumidifies while in the winter season ERV systems humidify and pre-heat incoming air from outside the house. One benefit of using energy recovery in the USA is the ability to meet the ASHRAE ventilation and energy standards, while improving indoor air quality and reducing total HVAC ratings a...

Poly vapour barriers in air conditioned houses can cause mold and rot
Healthy indoor air quality

Why you should Never Install Air-Con in a Home with a Vapor Barrier

...ERV or HRV unit for ventilation, as a way to keep your home cooler in summer and warmer in winter while saving a ton of money. Remember, Insulation is the gift that keeps on giving, long after that fancy new central air conditioning system needs major servicing or replacement. Why are old homes with air-con in great ...