Questions tagged [erv]

Energy Recovery Ventilators are heat exchangers which use the stale air they are exhausting from the building to precondition the fresh air they're bring in from outside to reduce heating and cooling costs.

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Using a HRV/ERV Fan without mounting it on a wall/window?

DIYers, I'm considering various options for home improvement and improving the home economy and resource/climate efficiency. One area of focus is the fact that I live in Denmark and it can get quite ...
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1answer
66 views

How should I decide between an HRV and ERV for a northern climate home?

I have a 33 years old house in Bedford, Nova Scotia, Canada. The existing air exchanger is out of order and need to replace with something newer. Question is should I get a HRV or ERV system. As I ...
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36 views

Is ice on ERV door normal?

My ERV is forming ice and condensation on the top of the door and on top of the unit (presumably because the fresh air intake is on that side). The outside tempersture hit about 1 degree F today. ...
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3answers
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How can I add ventilation to my basement office?

I have a finished basement with an office, guest bedroom and bathroom. All about 700 sq ft. I work 12+ hours in the office and really need to get some fresh air circulating by extracting stale air. I'...
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1answer
385 views

Should I tie into the ERV or just vent outside to increase bathroom ventilation?

Our bathroom currently only has an intake connected to the Energy recovery ventilation (ERV) to remove humidity, and it's completely inadequate even for a quick shower. Should I install an exhaust fan ...
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2answers
7k views

Can an HRV replace the air exhausted by a range hood?

I'm in the process of buying a 1950s ranch house. It doesn't have the greatest insulation, so I'm planning to do some improvements over the first few years to tighten things up. I'll certainly do the ...
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2answers
1k views

When insulating with closed-cell Spray Foam, what ERV and HVAC resizing considerations should I bear in mind?

I am building a 2800 sqft, two-story brick home in Austin, TX. I have heard many good things about the benefits of insulating with closed-cell Spray Polyurethane Foam (ccSPF)1, and have requested ...