HRV / Discussions

I'm in the phase of developing a new residential project; airtight building envelope with more than ample insulation. In doing so, I've discussed installing an energy recovery ventilator with my HVAC contractor. We will look at doing some form of energy audit to size the system. My greatest concern is how the ERV funct...

I will be building a house in Atlin, BC (zone 3), and was hoping to have a wood stove as back up heat for my hydronic slab on grade in addition to the aethstetics and comfort it would provide.  However, the thought of punching a 2 sq ft uninsulated hole through the roof with a steel column running up through the centre...

I have installed 30 lunos dual systems that are operated with rocket switches never had any trouble but now I have one out of the two in an apartment that will not shut off and doesn't switch direction the other works just fine I figured out that unplugging the green wire connector on the troubled lunos will make it ch...

...HRV help to filter out the odours and pollutants? Are there any specific HRVs more suitable for condos? Regards, Eugene Hi Eugene, I would say that it's certainly theoretically possible - but will depend on your Strata rules and on the construction and configuration of your building - as to whether you have access to a...

We are planning a Honka log house. 2 stories, 1750 sq ft. The solid Finnish pine logs perform really well, people say they provide superior air quality and behave as thermal batteries / but I can't tell how close to a passive / pretty-good-house their R value brings them. I'm hoping to get some feedback and possibly al...

How could I add an exchanger to a house without existing duct work? Do you mean you have hot water radiant heating in your floor and you are asking if you should install an HRV or ERV ventilation system?  I will answer based on that assumption, if I’ve missed the mark let me know And give me a bit more detail so we can...

Seems the only technology now available is a roof fan and an open window for ventilating my tiny home, which isn't a good solution in hot or cold climates. Ideally the HRV or ERC system I'm looking for would be powered by 12 or 24Vdc. Thanks Ventilation in tiny houses seems to be often overlooked for some reason, thoug...

...HRV, whether it is a ductless HRV like the Lunos or has a centralized core, is to recover heat before it is ejected from home. Unless I’m missing something then I don’t see the need if ‘re just trying to move air around.

...HRV inlet air with a dedicated tube that runs through a heated slab? Similar to a geothermal heat exchanger concept. Yes, you can run what is called a ‘ground loop’ below grade to warm or cool incoming air to your ERV or HRV depending on the season. This is seen sometimes in extremely high performing homes or Passive H...

...HRV in an older leaky home? There are lots of articles explaining the importance of balanced ventilation in tight homes, seems like air quality could/should be improved in older leaky homes as well. Or would the excessive air leaks make the HRV not effective? The only way to truly know if an HRV is required in an old...

...HRV in the basement that is activated by a radon gas detector; that would eliminate the risk of accidentally damaging any pipes below the slab since you don’t know where they are. The HRV can be set to leave the basement pressurized to keep the radon gas down. That may be a risk-free way to deal with radon (depending o...

I have a newly constructed 2000 sq ft home with Natural gas In floor Radiant heat. With the most updated energy codes. We are just looking for the best air exchange system. Thanks, John How to choose between an HRV and ERV (Heat Recovery Ventilator and Energy Recovery Ventilator for those not familiar) comes down mostl...

...HRV's.  I need the cost per unit and the best locations for the units. The space is open, with the exception of a small bathroom. I underestand there is a limit as to how close units can be to eave overhangs. Is the a consultant who could advise me in the Burlington Vt. area? Ductless  HRV / ERV wall-insert ventilation...

...HRV or ERV unit for our cold / hot climate?  How do you recommend we size the HRV or ERV? Which brands do you have experience of/ would you recommend (bearing in mind efficiency and power consumption)? To be clear, we aren't building a "Cabin in the Woods" like back in the day - this will be our 3000 sq.ft. main family...

...HRV. I understand using the ground loop fluid to preheat the air in the winter prior to entering the HRV but would in not be beneficial to have a second ground loop heat exchanger after the HRV in the summer?  This would allow for the coldest source (ground loop fluid) to effect the greatest change on the air after it ...

I have been doing some reading and I think I should  install an HRV, I have on older home (1970s) and it doesn't have one, wondering what I should be looking for. thanks Choosing the right heat recovery ventilator should be based on the following criteria: Unit size according to the air volume of the house that will h...

...HRV, the most effective strategy for ensuring healthy air at home is to avoid introducing pollutants in the first place. This means, among other things, avoiding furniture and other articles made of MDF (medium density fiberboard) and other materials that contain urea-formaldehyde. Read more here -  How to keep Healthy...

...HRV will likely help, you could also look for a model that also provides dehumidification. To understand the difference between an ERV & HRV unit, see here. As a minimum until an HRV or ERV unit is installed, be sure to run a bathroom fan when showering as well as stove hoods when you cook, and keep lids on pots as...