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MarinaDan
01-16-2010, 02:17 PM
Hello again,

I would like to thank everybody for the advice I got in the fall during the install of my new furnace and air filtration system.

I got the Goodman GMH950704CXA and the Aprilaire 5000 and have been very satisfied with the results. (gas usage down about 35% from last year).

My question today is; how much additional electricity would I be using if I run the fan on the furnace all the time to keep the Aprilaire actively cleaning the air.

Is this something I can find in the manual and make a computation based on my electricity rates?

If so, what might the formula be?

Thanks for any insight on this,

Dan

WhoIsThat?
01-16-2010, 02:37 PM
http://www.aprilaire.com/themes/aa/en/manuals/AprilaireModel5000_SafetRecall.pdf


h additional electricity would I be using if I run the fan on the furnace all the time to keep the Aprilaire actively cleaning the air.


Assuming a 1/3 hp fan and negligible draw from the air cleaner, 500w x 8760 hrs/yr = 4600 kwh/yr.

MarinaDan
01-16-2010, 02:46 PM
Thanks for the heads up. I bought mine 8-2009 so I should be good.

MarinaDan
01-16-2010, 03:38 PM
Sorry, I only saw the link the first time. I'll find my electric bill and do some math.

Does this mean you're estimating 500 watts for every hour of use? (like having 5 lights on with 100 watt bulbs)

Thanks,

Dan

amd
01-18-2010, 03:05 AM
Does this mean you're estimating 500 watts for every hour of use? (like having 5 lights on with 100 watt bulbs)

On high.

Most multi-speed psc blower furnaces can be set up to run the fan continuously on low and switch to the appropriate speed when there's a call for heating/cooling.

PSC motors aren't too efficient on low, so you're still looking at probably 200-300wh per hour.

The GMV95 would have been a more suitable choice for running the blower continuously (variable speed ecm), but it's too late now.

To dramatically reduce electricity use on low, ask your contractor about the ecotech retrofit motor. (http://www.emersonclimate.com/en-US/products/motors/variable_speed_ecm/rescue_ecotech/Pages/rescue_ecotech.aspx)

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EACs are usually rated at 40 Watts.

gary_g
01-18-2010, 02:22 PM
Sorry, I only saw the link the first time. I'll find my electric bill and do some math.

Does this mean you're estimating 500 watts for every hour of use? (like having 5 lights on with 100 watt bulbs)

Thanks,

Dan

Assuming 500 watts for the fan, 40 watts for the air cleaner, and 10 cents per kw-hr electric rate:

.54 kw-hrs x 10 cents per kw/hr = 5.4 cents per hr.

Take care.

MarinaDan
01-22-2010, 08:33 PM
Thanks,

Once again, this place is an awesome source of information. That gives me a good idea since 10 cents per kw/h is about what I pay.

I will look into the ecotech retrofit motor option with my installer.

Dan

MarinaDan
01-22-2010, 08:42 PM
Forgot to mention AMD, I agree I should have kicked out the extra for the GMV which I believed you mentioned in my previous thread. Of course cost was a factor, but in hind site I could have probably come up with the extra cash.

Ya live ya learn!

Thanks all for all the help,

Dan

beenthere
01-22-2010, 10:55 PM
About $560.00 a year.

If the blowers moving 1600 CFM.