Fan-vent thoughts

[daplatapus]

Originally Posted by Ryan7

House has no furance, radiant heat with boiler, 20 year old house.

If the boiler is gas fired (as opposed to electric) it still requires combustion air and has a chimney. Negative pressure in your home (from too many or too large of bath fans, dryers, kitchen fans etc) will suck air that is trying to be vented from your boiler into your home. That air, once burned 2X creates carbon monoxide, deadly.

[darb]

you made reference to a sump/equipment room in your first post.

anyways, portable dehumidifiers are somewhat small perhaps one could fit in the enclosure or another strategic location.

just another angle to consider, strip the moisture from the air instead of exhausting the air.

Originally Posted by Ryan7

not sure what your mean. Here is a little more info on the area, equipment area will just be under the tank with closet area connected to one side of the tank, area will be sealed off from the rest of the house with and will have access panel.

Above the tank will also be a sealed off area with access panels.

[Ryan7]

Originally Posted by cuz

make sure to add air return lines, with sucking out that volume of air your going to develope negative pressure in your house.

Would house air vents solve this?

[Ryan7]

Originally Posted by darb

you made reference to a sump/equipment room in your first post.

anyways, portable dehumidifiers are somewhat small perhaps one could fit in the enclosure or another strategic location.

just another angle to consider, strip the moisture from the air instead of exhausting the air.

Thats why i thought i would clarify the "room" more of a large closet space and will be lots of space under tank. I dont think a dehumidifier can handle the volume?

[Ryan7]

Originally Posted by daplatapus

If the boiler is gas fired (as opposed to electric) it still requires combustion air and has a chimney. Negative pressure in your home (from too many or too large of bath fans, dryers, kitchen fans etc) will suck air that is trying to be vented from your boiler into your home. That air, once burned 2X creates carbon monoxide, deadly.

I understand. The boiler is on the other side of the house and I will not be able to tee into its vent. If there are house vents or more added to the general area where the tank fans are sucking out, this should solve the pressure issue?

[darb]

I was actually looking at getting one myself and for $200 you can get a portable dehumidifier that is rated for a 2000+ sf home: http://www.sears.ca/catalog/dehumidifiers/12996

Originally Posted by Ryan7

Thats why i thought i would clarify the "room" more of a large closet space and will be lots of space under tank. I dont think a dehumidifier can handle the volume?

[Ryan7]

Originally Posted by darb

I was actually looking at getting one myself and for $200 you can get a portable dehumidifier that is rated for a 2000+ sf home: http://www.sears.ca/catalog/dehumidifiers/12996

I think that rating is based on a regular humid house, not one with a 425g tank? I have read that dehumidifiers have not worked for people with large systems due to the amount of evaporation?

[Ryan7]

Just came across the following;

I can have access to two other vents coming from a gas fireplace, I imagine one is an intake and the other is out?

[hillegom]

This has been mentioned earlier, but...
If you have a bathroom fan on 24/7 you are exiting warm air, and cold air is coming in from outside to replace that air. You have to heat all that cold air. Not very cost effective method.
Even if you put in a vent in the closet that replaces that exhausted air, your chimney from your boiler might flow backward and you could get carbon monoxide poisoning. You should talk to a heating specialist.
You want to have + pressure in a house, not negative.

Once you get the pressures figured out, there are humidity control units that will only start the fan at a preset humidity level.

[cuz]

Originally Posted by darb

I was actually looking at getting one myself and for $200 you can get a portable dehumidifier that is rated for a 2000+ sf home: http://www.sears.ca/catalog/dehumidifiers/12996

Just took mine out of comission, doesn't cut it in cold weather with large tanks.