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ANGRYKOREAN 06-13-2011 08:46 AM

Can I do this?
 
I have a remodeled basement that is half underground. It has several air vents right above ground level but I feel as though the air vents let in too much dirt/dust as well as insects. My question is, can I somehow close off these vents and just purchase a dehumidifier?

gregzoll 06-13-2011 10:22 AM

If these vents are there for make up air for the furnace & water heater, you have to leave them open. You can though use cheap blue air filters to filter the air if have to leave them open.

ANGRYKOREAN 06-13-2011 10:47 AM

Quote:

Originally Posted by gregzoll (Post 666434)
If these vents are there for make up air for the furnace & water heater, you have to leave them open. You can though use cheap blue air filters to filter the air if have to leave them open.

They are not there for the furnace/water heater. They are just vent grills to let in fresh air. Something like this

http://www.basementwaterproofingofny...ent-window.jpg

gregzoll 06-13-2011 10:59 AM

Again, does your furnace or water heater require fresh air, or are they high efficiency types that take in through a fresh air intake. If they are not the later, those vents have to stay open to allow make up air for those appliances.

tpolk 06-13-2011 11:04 AM

those are crawl space vents never seen them for make up air or used in full basement

ANGRYKOREAN 06-13-2011 11:05 AM

Quote:

Originally Posted by gregzoll (Post 666463)
Again, does your furnace or water heater require fresh air, or are they high efficiency types that take in through a fresh air intake. If they are not the later, those vents have to stay open to allow make up air for those appliances.

Hmm.. Not sure about what my furnace/water heater requirements are but my furnace/water heater are located in the garage, which has it's own air vents.

tpolk 06-13-2011 11:09 AM

is it a full basement or part crawl space

ANGRYKOREAN 06-13-2011 11:14 AM

Quote:

Originally Posted by tpolk (Post 666470)
is it a full basement or part crawl space

it's a full basement.

clocert 06-13-2011 12:40 PM

If you close those vents, can you still get fresh air into your basement ?

ANGRYKOREAN 06-13-2011 12:59 PM

Quote:

Originally Posted by clocert (Post 666521)
If you close those vents, can you still get fresh air into your basement ?

Yeah the basement has windows. It can also get circulation from the garage.

clocert 06-13-2011 02:25 PM

In that case, I say go ahead..

gregzoll 06-13-2011 04:44 PM

Quote:

Originally Posted by ANGRYKOREAN (Post 666534)
Yeah the basement has windows. It can also get circulation from the garage.

Your basement & house/living quarters can not get fresh air/make up from the garage. If it is, you need to put a stop to any air coming from the garage.

alecmcmahon 06-14-2011 03:49 PM

I would not close them off, depending on the size of your boiler it needs X amount of sq inches of fresh air for the flame to properly run.

If you seal off boiler room you will be starving the boiler flame for air.


If you HAVE to close them off, and the boiler is in its own seperate room from the rest of the basement you have to put vents in the walls to let the boiler use whatever from the rest of the basement.

Windows will not suffice for ' fresh air vents' since they arent open year round, and would probably be against code.

( i personally dont like that idea, and would leave the outside air vent )

Your boiler mfg. can tell you the specs of how big of an opening you actually need.

gregzoll 06-14-2011 04:08 PM

alecmcmahon, the OP already stated his furnace & water heater are located in the garage, so in all reality, he can most likely close up those vents, but also, they were placed in the structure for a reason, not just to make it look pretty. I am sure that previously when the home was built, the furnace & water heater were probably either located in the basement, or were going to be placed in there, but things may have been changed during the build.

alecmcmahon 06-14-2011 04:18 PM

Oh, i completely missed that, my bad.


Maybe those vents were originally there for an older oil fired boiler back in the day?


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