Blower motor?

[Mark]

agreed, you want to use a fan, not your AC blower.

Mark

[scott_z500]

Fan motors are cheap and easy to replace. I've done it once. Don't worry about it.

[Mikepier]

I agree. My basement is cool. The blower sucks that air throught the return grill in my basement and brings it up to the top floors. I definately think running the blower helps. My house feels more stale if the blower was off.

[G Henslee]

Doesn't take much for that to happen 8-)

[Duane Bozarth]

How can leaving it running 24/7 have an effect (eventually)?

That said, it's a design mode and won't kill it in just a short time as OP is concerned about...

[HopsNBarley]

BE

I was told that it wouldn't, but I've replaced my motor twice in 8 years. I leave mine run 24/h a day 7 days a week.

[udarrell]

Chris, you and Travis hit the nail on the head; the blower adds heat and will run your electric bill up! If you want air circulation use a large 20" floor fan in the areas you will be in; it uses a lot less electricity and produces very little heat. If increasing the air circulation with a floor type fan allows you to set the Rm TH to a higher temp - that will save on energy costs and compressor run time. Running the furnace blower motor 24/7 will add to much to energy consumption and add motor heat to the conditioned space. (Losing equation.)

- udarrell

[arizona]

motors are a lot cheaper to replace every 8 years, than the cost of paying for all of that compressor time you don't need

[All in One Service and Repair]

Generaly, when you leave the fan switch on, on. it is not in cooling mode, it is in fan mode. I may be wrong but i thing he may have ment run the A/C

24-7, in other words, set it at a decent temp. and leve it be. dont cut it on when it is to hot, by that time it has to work twice as hard to catch up. The squirl cage fan stays cool to a certain extent when running, like a car, it blows air over and around the moter to keep it cool. hope this helped

[Duane Bozarth]

Well, it certainly seems to have increased the hot air circulating in a.h.r... :)

[Duane Bozarth]

Different effect, but both are design conditions...

[HopsNBarley]

Me

Duane Bozarth wrote:

Eventually, but you would think there would be more of an effect turning the motor on and off all the time.

Glenn

[BE]

Just a question regarding the blower motor on my furnace. I just had the evaporator AC coil replaced. I mentioned to him that even before it went bad the home does not seem to stay cool for long. He told me to leave the fan switch on the thermostat to on so that it blows 24/7

Well needless to say that makes a huge difference as the compressor isn't needed as much.

My concern is will this shorten the life of the motor? And, is it ok to leave the fan on 24/7 for 2, 3, 4, 5 days? My thinking is to leave it on for whatever the duration of the heatwave. Correct?

Thanks...

[Edwin Pawlowski]

Or course it will, the question is how much? Anything mechanical will eventually wear out. Quality motors with quality bearings can last for many years. I know of some that have been running 16 to 24 hours a day for well over 10 years with no problems. I know of some that went to crap in a year. While you will be using the blower motor more, you already noted the compressor (the more expensive part) is running less, so why not take advantage of that?

Keep in mind that starting and stopping also puts a strain on things. Compressors are often rated with having a maximum of X number of starts per hour.

[Travis Jordan]

Sorry, but that is an illogical conclusion. The only component of the air conditioning system that removes heat is that of the refrigeration (compressor-condenser-evaporator) cycle. Running a circulation fan only redistributes the existing air. Over the long term the compressor has to run equally long to remove a given amount of heat.

[Chris Hill]

Sounds like a silly idea. The motor will get its life shortened, and your electric bill will get its dollar amount raised. Also, all energy put into that motor to spin it eventually becomes heat. Heat that will be going into your house.

[Rick]

compressor

refrigeration

Not an illogical conclusion at all if the house has poor air circulation. I've measured air temp deltas of 15 degrees or more between floor and thermostat with registers and cold air returns at floor level...

[Travis Jordan]

Regardless, running the blower to circulate air won't reduce the total load on the compressor.

[Rick]

But it sure will reduce the running time if the air is mixed...

[Rick]

before it went

compressor isn't

going

little heat.

Exactly....