Most people have never heard of a “Fan in a Can”.
Fan in Can, to the right.
So here we go.
A fan in a can brings fresh air into utility rooms, boiler rooms, etc.
Most installations of the Fan in a Can product have utility/ boiler rooms in a home that has no windows, and not enough “make up air” within it. Make up air is needed to provide hot water heaters, boilers, furnaces, ei anything with a burner Air for proper combustion of the units burner.
When you don’t have enough make up air in a room that has lets say a water heater & boiler in it. The room will be very warm and the usable air quantity becomes very low over time as the units burners consume the air they need. When this happens water heaters, boilers, and furnaces become less efficient and consume more gas,oil, and or propane than they normally would use, because the burner has to work harder to con-bust the poor quality of air.
Some people think that the warm utility room is nice, and it is i suppose but it’s not the idea situation for a home, because you will use more energy, and the chances of carbon monoxide poising is a very real possibility.
An older Fan-in-the-Can.
How it works: The Fan-in-a-Can gets a signal from the boiler that the boiler needs to create heat to satisfy the demand. At that point the Fan-in-a-Can turns on and pulls outdoor air into the room where it’s located. At that point a signal is sent back to the boiler letting it know that there is plenty of good combustible air in the area, and it’s safe for the boiler to operate.
This is what a fan in a can looks like.
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Note: What you can’t see in this picture is the other picture I forgot to post.
Which is the wiring going from the Fan-in-the-Can to the control board on the boiler. The fan is the can must be wired properly to the boiler or it will not function properly.
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