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3 Answers

Is humidification requried in a northern climate?

I plan to build a new house in west central Wisconsin and I'm wondering if a humidifier is necessary. I plan to have a fully ducted ventilation system probably with an ERV (architect recommended) although the HVAC contractor believes that an HRV should be used (I'm forwarding him the HRV or ERV? posting).

Would an ERV be sufficient to keep the moisture levels sufficiently high during the dry winter months? The wife wants a monstrosity and there are only three of us living in it if that is useful.

Thanks, Tom

In Mechanicals | Asked By Tom Peterson | Sep 18 13
2 Answers

Geothermal vs boiler using well water

What is the difference between heating with a geothermal furnace vs a regular boiler that pulls from a deep well?

More specifically if the spirit of a geothermal furnace is to use the near constant temps of water from a deeply drilled well to aid in getting your medium(I think most geothermal units heat with hot air) up to the temp needed to heat the house, than shouldn't a normal boiler on the house's drilled water well basically be doing the same thing?

Just curious.

In General questions | Asked By brent sitterly | Sep 18 13
7 Answers

Ventilating an indoor pool

I have a client that has an indoor "infinity pool". He refused to have the builder of the addition that houses the pool instal a " just a fan" to ventilate the room. So....the room is now 5-7 years down the road and suffering from the indoor humidity, The walls are insulated with poly iso, and as far as I can tell just sheetrock or maybe skim coat. The windows seals are starting to go and the wood inside is looking shabby.

In Mechanicals | Asked By Steve Greenberg | Sep 19 13
2 Answers

Insulation and condensation

I am curious about the consequences of not insulating a block or concrete wall in a conditioned space, particularly, but not exclusive of a basement. I know that a typical uninsulated wood framed wall will not have condensation/mold/rot problems because the cavity will stay warm and dry itself out, but is that also true of a masonry type situation, if I were to frame against it and drywall it. My gut tells me that the warm air will condense against the cold wall and cause problems, but then it doesn't seem to in a wood wall. Am I missing something?

In General questions | Asked By patrick killelea | Sep 19 13
5 Answers

Cold air return in basement?

I have a Venmar AVS Constructo 1.5 Heat Recovery unit installed in the basement of my condo. This was already installed when I moved in. I am the first occupant of this condo. There are vents installed on the main floor at ceiling level in the kitchen and in the two bathrooms. There are two cold air returns on the main level. There are heat registers installed in the ceilings of the three rooms in the basement (finished lower level), but no cold air return register on that level.

In General questions | Asked By Karen Wallis | Sep 18 13
1 Answer

Bath fan location

is it advisable or best practice to install the bath fan directly above a walk-in shower or bath tub? often you see them directly above the water closet but in terms of removing moisture from the bath or shower, wouldn't it be better served as close as possible..? thanks

In General questions | Asked By erik olofsson | Sep 18 13
10 Answers

What type of foam on an exterior roof/cathedral ceiling?

Ok..I decided not to use my supply of 3" x 16" x 8' Dow Blue XPS on the inside of my main ceiling only IF I can:

In Energy efficiency and durability | Asked By Geoffrey Cook | Sep 13 13
1 Answer

Windows more insulated than walls

We have an old masonry building. We are thinking of not insulating the walls but installing very high R windows so that the windows will be outer surface of the windows will be cooler than that of the walls. Are there condensation dangers in a scenario like this? Thanks.

In Green building techniques | Asked By Daniel Herskowitz | Sep 18 13
1 Answer

What I can do with the smell in my attic after closed-cell foam was installed 10 day ago?

My attic adjusted to my bedroom and I use attic for storage and for closet. From my bedroom I have door to attic what is very functional. This part of attic has large house fan which I use in very hot weather and fan suck out hat air from all my house. In the winter I close fan with large wooden board which is under lover part of attic. I had very old fiberglass insulation which started falling down. I invited "ASTRO" company which I found on Angie's list. They said that any smell will disappear in two days.

In Green products and materials | Asked By elvina berman | Sep 18 13
8 Answers

Cardboard insulation baffles

Wondering if there are any drawbacks/issues with using cardboard ventilation baffles? We made our own baffles out of foam sheathing for the last two homes we built to create an air tight insulation cavity between rafters. Needless to say it is a very time consuming and costly process, especially with a few volume ceilings.

We just experimented making baffles out of a sheet of cardboard and we think we could create, install, and seal these cardboard baffles in a fraction of the time it would take with other materials.

In GBA Pro help | Asked By Bruce Miller | Mar 31 13
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