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airheatman, HVAC Technician
Category: HVAC
Satisfied Customers: 8049
Experience:  Furnace, A/C and heat pump specialist.
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# What is the wattage usage for the fan motor when in just in

### Customer Question

What is the wattage usage for the fan motor when in just in 'Fan' mode for a model G23Q3-100-6? Full speed I calculate 575 watts but I think when just in 'Fan' mode I think it runs at a lower rpm.
JA: I'll do all I can to help. How long have you been dealing with this?
Customer: For the past 10 years I have usually kept the unit in this mode year around to improve the comfort in our multi-level home thinking it was saving money. In August I turned the fan motor off since we have had some nice seasonal weather that did not require that need, plus the noise is a lot lower. With that we have had a huge reduction in our energy reduction. So I wanted to figure out if this was the root cause and after 16 years of use is my blower motor becoming inefficient.
JA: Did you double-check the thermostat? And what about the unit's filters?
Customer: Also are there updates for improved performance for this model that I need to perform?
JA: Do you plan on doing the work yourself?
Customer: What would you like me to check the thermostat for? I use two reusable furnace filters that get cleaned and switched at least once a month. In winter months I usually change more frequently due to pet dander and enclosed family living.
Customer: I would like to perform the work myself.
Submitted: 4 months ago.
Category: HVAC
Expert:  airheatman replied 4 months ago.

I am actually showing the motor to draw 5.1 so I come up with 586.5.

The formula as you know is Volts time watts

Expert:  airheatman replied 4 months ago.

Ti give you an idea, if you are paying .11 pe rkwh from power company and ran fan 24hrs per day:

586.5 divided by 1000 = .58

.58 times 24 hours - 13.92KWH

.11 times 13.92 = 1.53 per day

In a 30 day month it would cost 45.90 to run fan non stop.

There are some retrofits on the market. Below is a link to an example.

http://www.rockpapersun.com/blog/?p=439

If you have further questions, please let me know.

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