Our blower for our ac/heat is very loud is this normal?

Question

Our blower on our ac/heat is extremely loud. We recently discovered our coils were very badly covered due to neglect from our apt complex. The covered coils was noticed when someone was replacing our furnace due to a cracked heat exchange. looking for any advice.

also.. the coils are now cleaned, but i'm not sure if they looked at the blower or not. Should I demand someone look at my blower too? My apt complex has already cost me way to much more $$ in electric.

Answer 1

If the whole furnace was replaced then there is a new blower as well. they come together as a unit. if only the heat exchanger was replaced then you would still be using the old blower. if the entire furnace is new it is possible that the installers did not set the blower to the appropriate speed. new furnaces are commonly factory set at higher blower speeds. to check and change the blower speeds first turn off power to the unit by flipping the switch usually mounted on the side of the unit. open the access doors and locate the control board. the control board should be pretty obvious, it's where all the wires are connected. find the wires to the blower and where they connect to the control board. one terminal will be labeled heat and one will be labeled cool. the wires to the blower will be color coded, each one representing a certain speed and a white wire which is the common connected to the neutral terminals. most likely on the back of one of the access doors will be a wiring diagram. find the blower on the diagram and it will tell you what color is for what speed. select the appropriate speed for heat and cool (cooling speed should be higher than heating speed). the unused wires are "parked" on "dummy" terminals not connected to anything simply to hold them safely in place because there will be voltage present in these wires during blower operation. after any changes in blower speeds be sure to put the unused wires on the "dummy" terminals usually labeled "park", "m1" or "m2". put the dorrs back on and turn on the poer then try it out. if you are not confident that you understand what to do then you should not do it but call a serviceman instead. this description fits most gas furnaces, elictric furnaces and some oil furnaces as well, but NOT ALL.

Answer 2

I had a vent fan in a bathroom that was terribly noisy. I took it apart and found about 1/8 inch of gunk (fuzz and probably old hairspray) all over the blower turbine. So, I cleaned it off and, when I put it all back together, the fan was hardly noticeable after that.

If there was a lot of gunk cleaned off the cooling coils, you can pretty much assume that there is a lot of gunk on the blower, too. This should be removed and cleaned off.

Also, if an intake filter gets clogged (needs to be changed), this can cause a louder sound at the intake vent and at the blower itself. Since we had these fires down here a couple weeks ago, the intake filter on our furnace had gotten completely clogged with dust and ash to the point where the filter actually buckled from the suction. It was also making a very loud noise, like the blower was working harder or something. When I replaced the filter, the noise went away.

Answer 3

If they put in a new furnace it comes with a new blower. If they put in a new heat exchanger and the coil was dirty then the blower is probably dirty

Answer 4

yeah, you probably have something laying against the blower blades. With the problems you have mentioned, the entire furnace and air handler needed a good inspection.

Answer 5

it could be a problem or just where it was located. the blower unit on my a/c heater is in closet in den area. every time it clicks on , i have to turn tv up.

Answer 6

yes, have maintenance check it out.