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37 votes
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Does anyone know what this fan blower thingy is?

Cyclone paint mixer. Cyclone paint mixer I imagine you just need to remove the hang tag at the drill end.
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19 votes

Will a PVC weld cure to fill 1 mm?

It might work or it might not work. PVC pipe and fittings are not really 'glued' together but are solvent welded. The inside of the fittings are designed with a tapered hub (the inside diameter of the ...
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  • 4,272
13 votes
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Will a PVC weld cure to fill 1 mm?

Will a PVC weld cure to fill 1 mm? What other bonding agent could I use as a filler before using, or in addition to, the PVC weld? As others have mentioned, PVC weld only works on PVC. The black part ...
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  • 941
11 votes

Will a PVC weld cure to fill 1 mm?

These things are not designed to go together. They are not made of the same kind of plastic. And PVC cement is not made to bridge gaps. That would never hold against pressure. Since leakage is not ...
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10 votes
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Why are furnace/central AC blowers so inefficient?

Okay, so I think I figured out the reason, and I learned a lot about HVAC in the process. The answer is that a ceiling fan is moving air at basically zero "static pressure." Static pressure in an ...
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  • 12.2k
7 votes

Air Conditioner Can't Keep up

It does sound like the biggest opponent the AC is facing is the large picture window. I'm guessing it's just not a well insulated and/or not high-e glass and just letting too much heat in. For ...
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  • 23.8k
5 votes

Air Conditioner Can't Keep up

The apartment is gaining more heat throughout the day than the AC is able to remove. Unfortunately, as a renter, there isn't much you can do about this. The real solution is to improve the building's ...
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  • 12.2k
4 votes

Air Conditioner Can't Keep up

In addition to DA01's excellent answer, here are a few more suggestions that may give you enough minor improvements to prevent having to upgrade your A/C system. Be sure that the output vents in all ...
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4 votes
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Air Conditioner Can't Keep up

This problem can be multi-faceted. Someone could guess all day long as to what the problem(s) is / are and not even come close. Air conditioning isn't something to guess at. It's like having a rattle ...
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4 votes

Why are furnace/central AC blowers so inefficient?

Just because the furnace fan is rated at 3/4 or more horsepower, does not mean that it is actually running at that power level. To clarify this, consider the extreme with an electric motor with ...
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  • 12.1k
4 votes

Will a PVC weld cure to fill 1 mm?

The PVC welding cements rely on the PVC fitting fitting together in a very tight fashion. I doubt that you'd have satisfactory results based on my experiences. Your best solution would be to get a two ...
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  • 53.1k
3 votes

AC - frozen tubes, no air flowing when fan on and system off

Turn the system off and let it warm up this may take a while if the evaporator coil is frozen up. When a system charge is low icing of the coils is a indication. The fan motor may be bad but once ...
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  • 95.4k
3 votes

Air Conditioner Can't Keep up

You may be moving too much air with your blower fan. A ton of AC should have 400 cfm blowing, so the fan speed depends on the size of the cooling unit. It seems counter intuitive, but think of the ...
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  • 31
3 votes

AC - frozen tubes, no air flowing when fan on and system off

I think Ed's answer is on point, in fact from your story I don't assume the fan is bad. I think he is spot on, its thermal overload. So, the fan COULD have, or WILL burn out, so, turn the system off. ...
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  • 1,976
3 votes

The blower on my HVAC runs sometimes when it should be off

That is actually a Trane/ American Standard furnace I believe. The cause is most likely the limit switch is getting so hot it is opening causing the fan to turn on to cool the limit switch. They often ...
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  • 1,541
2 votes

Air Conditioner Can't Keep up

In a quick perusal of answers I didn't see this covered: About ten years ago it got to 118° here, and our A/C couldn't keep the inside temperature below 85°. A few days later while replacing the ...
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  • 1,365
2 votes
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Should there be a cap next to my furnace ac drain?

Yes, that should be either plugged, or plumbed as a secondary drain. A 3/4" MNPT plug should do the trick.
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  • 128k
2 votes

Can I retrofit a 2-speed or variable speed blower on a Payne PG8UAA forced air furnace?

According to the manufacturer's documentation, your furnace should have a 3 or 4 speed blower motor. The problem is, the furnace control module doesn't use a separate speed when the unit is running in ...
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  • 128k
2 votes

How much power/electricity should my central air's blower fan use?

It is very unusual but not unheard of to have a furnace hooked up to a heat pump. Usually you would have an air handler and air handlers usually have backup electric heating strips. These heat strips ...
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  • 1,541
2 votes

Goodman GMP 100-4 Red light blinks 4 times

The plug in bottom of the furnace had come unplugged from the board. Plugging it back in solved the problem.
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  • 51
2 votes

Why doesn't my air conditioner fan come on when the condenser starts?

Mark and remove the wires from R and G. Add a jumper wire across R and G. You should hear a click (that's the relay on the board) and the motor should start. If not check your capacitor (little oval ...
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  • 6,098
2 votes
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AC - frozen tubes, no air flowing when fan on and system off

The AC coil in your ductwork is freezing due to insufficient airflow across the coil. The coil needs to transfer heat by having airflow across it. If there is no airflow the coil freezes; hence, the ...
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2 votes
Accepted

Use external switch to control blower fan on furnace

Connect the switch from R to G Wiring a standard light switch between R and G will do what you want -- the switch will perform the exact same function as the fan switch on a thermostat in gas mode. ...
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2 votes

Use external switch to control blower fan on furnace

You can connect a light switch using G and R. There are 2 power terminals, R and C. G, Y and W are broken connections to R. A thermostat essentially is just an automatic jumper between R and G,W or Y. ...
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  • 1,541
2 votes

How can I extend the length of my furnace run time after burner shutdown?

I too am like you, an old time boiler guy; 40+ years + 11 retired. My comment to you is, if your furnace fan is running on the correct fan speed and the furnace is not too oversized, the heat ...
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  • 12.1k
2 votes

Furnace blower motor starts but then starts clicking and eventually stops with a loud buzz

The bearings need to be oil at least during your annual maintenance.....the what? Yep once a year your system needs a checkup, just like your car, it needs checked, tuned up and repaired as needed. A ...
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  • 2,292
2 votes
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ISSUE: Snowblower pushes snow (forward) rather than throwing snow out of the chute

My Craftsman 3/21 single-stage, 2-stoke snow-blower now works perfectly and discharges snow from chute as expected/desired. Thanks to everyone that helped me solve this HI/DIY problem!!! Corrective ...
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  • 185
2 votes

Trane VX99 furnace fan to run

You have a simple setup with R (24V power) and W1 (HEAT). The fan is turned on automatically, along with HEAT, when the thermostat applies the power from R to the W1 connection. The FAN terminal is ...
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  • 20.3k
2 votes

ECM Blower Motor Not Working at Night

Since all signs seemed to point to a bad motor, I took a chance and replaced it. The new motor has been working fine for several days now. Not exactly sure why it was only failing at night, but I ...
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