If an extractor fan sucks air out ???

Question

what is a fan called what pumps in fresh air ????

i want a fresh air fan that pumps air in ?

but i cant find one because i dont know what they are called ?

Answer 1

An air exchanger does both, draws fresh air in and stale air out at the same time.

Maybe that's what you need.

Answer 2

You just want a reversible window fan.  Most large, whole house window fans have this feature, and many smaller, room-sized fans do as well.  

We have a whole house window fan and it has 3 speeds in and 3 speeds out.

Most people who use these big whole house fans use them to exhaust air rather than bring in fresh, because it is more efficient to put one of these fans in one part of the house and then open windows at the opposite end.  That brings in the fresh air you are looking for while getting rid of all the stale, old air quickly.

On the other hand, when you put it on intake, you mix the old and new air as the fan pushes it through the house and so it doesn't cool/clean the air inside the house quite as efficiently.

Answer 3

An extractor fan suck in air, filters it, and then blows it back out. A normal fan just blows air around the room. That's it.

Answer 4

So where do you think the air that is being extracted is coming from. It is coming into the room from the door, window and whatever other vents there are. The effect of a blow-in fan will be exactly the same as an extractor fan.

If you do install a blow-in fan, say in the bathroom or kitchen, think where all the smelly or smoky air will go - into the rest of your house. Good idea??

Answer 5

With an extractor fan you could always open a window for fresh air!

Answer 6

an exhaust fan forces air out your attic,but meanwhile all your windows are open ,so it is pulling cooler air in and blowing hotter air out,except on really hot humid days,when nothing works but ac.remember air won't come into your house unless it can get in ............tom

Answer 7

Around here we call the former an exhaust fan. A f**t fan in pertaining to the John Hancock room or bath (it's July 4th here). When engaged it creates negative air pressure that draws air into the area through vents in the eves, open windows (or any place the space isn't totally sealed) if it's mounted in the ceiling or if the one next to the stove is vented to the outside.

Outside of a reverse switch or a fan mounted in reverse we have the window mounted box fan. Grainger (grainger.com) might call it a blower.

There is a setup hooked into the furnace duct work ( called Energy Recovery Ventilator-page 3040 of catalog 398) that has a heat exchanger in it for air tight houses so the 'sick house' condition doesn't come up given that during the life of the house gases given off by curing fresh paint, new carpet or vinyl inflated/covered/ items is vented for the benefit of the living inhabitants.

Note that Grainger is a wholesale company that sells to business customers. 1-888-361-8649 is their number if you don't want to check things out on line.

Answer 8

You need an infiltrator fan.

lol

Answer 9

you need an air conditioning unit

Answer 10

James F has it, precisely.  Mind you, you could always just open windows at both sides/ends of the house . . .

Answer 11

Err, just turn the fan round!

lol