Ventilation / Discussions

...ventilation, you can do that starting here on this page – Does a house need an HRV / ERV air exchanger? It is true that houses are being build more airtight in this day and age than in the past, and that is a very good thing. It means less energy loss as heated or cooled air escapes, and that escaping air carries moist...

...ventilation to the room. Most how-to guides describe dual 4 inch vents to the exterior for air circulation, but my builder assures me condensation will not be an issue and that we don't need any ventilation. Presumably airflow is still important for food preservation? Alternatively, our utility room with HRV is in the ...

...ventilation ducts. Last week a doctor asked me if I had a air exchanger and to check the hoses and see if there is any water in the. I did and they have been dry as a bone for about 10 years. He said the air exchanger is sucking all the moisture out of my home and it is too dry. I turned it off for a week and I must ad...

...Ventilation: Improve ventilation with an air exchange system that can help reduce smoke buildup by bringing in fresh air and expelling contaminated air. Air Scrubbers: Consider using a portable air cleaner with HEPA and carbon filters for more effective and easy smoke removal. Each of these strategies can help reduce ...

I have a 40 yr home in Ottawa, Ontario Canada..where humidity is needed in winter and too much humidity in summer. Do I need a HRV or ERV unit...given the fact that I may not have an airtight home? If yes....which is the best brand for my climate ??? Whether you are better to have an HRV Heat recovery ventilator or ERV...

I have a part concrete and part dirt floor in basement with mildly elevated radon levels. Radon mitigator told us to use a HRV to reduce it by about 50%. Should that work? Would an ERV work and be more efficient? Any recommendations on brand, CFM? You can use an HRV or ERV to remove radon gas in basements and crawlspac...

...ventilation in our Edelweiss Demo House in 2015 but we have not been in contact with the company since. Have you contacted anyone at the company?  You can also look for fans in the Ecohome Green Building Products Directory and you may find something you like, if not Aerotron. 

...ventilation systems do reduce the levels of radon gas in homes, and an HRV or ERV is important for any reasonably well sealed house to provide fresh air and remove moisture.  Any properly sized and installed ventilation system will do the job, but ductless HRVs for fresh air in older homes is a really nice option since...

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...

...ventilation systems to check with their munipality first to make sure it will pass. 

...ventilation system would depend a lot on your climate zone. First I would recommend you look over this article about choosing between an HRV and ERV to see which type of unit may best suit your needs. This page about how to keep an HRV operating efficiently may be of value long term as well.

I have high ceilings and I will be adding an addition this summer with normal height ceilings and a new stairwell to the basement. Should I arrange for a ceiling fan in the older part with high ceilings or will it be redundant with HRV connected throughout? If it were me I'd want a ceiling fan in the older portion of t...

...ventilation openings through the soffits. Check this page first about roof ventilation – Why roofs need to be ventilated and how to ventilate a roof properly So that would cover the blown-in aspect of your insulation, but your design in general has me a little baffled so I’ve got no answers but a bunch of questions of ...

I live in the mid-west and have a 2 story home built in the 1950's.  Over time, the home was remodled.  The remodle resulted in 1 AC/Furnace unit for the basement/main level and a 2nd AC/Furnance for the upstairs (the upstairs was previously attic space).  In the summer the humidity is frequently in the 70's (yuck!) on...

I have a 68 year old house with brick exterior walls and plaster interior walls. I'm assuming the insulation is rock wool with paper. My house can get dry in the winter sometimes with humidity at 20% in a cold spell and I am going  to install a humidifier. I have a merv16 air filter installed. Do I need an HRV or ERV ?...

Research has shown vented roof with air tight attic can save 20% energy. Have you done that before? And suggestion for new 2 story build ?   I don’t fully understand sorry, can you give us more details? In the research you mention, where does the 20% energy saving come from, meaning compared to what? Homes should be ai...

...ventilation solution beyond just 'open window'. I can't guarantee this will fit your budget but have a look here at ductless wall insert ERVs and HRVs can be a more simple ventilation solution for older homes than gutting it to run ducts. Ductless wall insert ERVs for renovations and new home builds This system works i...

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...