At night I run just the fan motor with no climate control. I do this because the white noise of the compressor drowns some of the noise out from my inconsiderate neighbor upstairs. Will I be consuming a lot of energy? Does this run off 220? I don't want a huge bill at the end of the month but until I can get this problem resolved I want to sleep as well. Thank you very much.

If you are just running the blower, the compressor isn't coming on. As to whether it is 220 (240), is this a conventional furnace or heat pump? Usually furnaces have 120v blower motors, and heat pumps (with a few exceptions) are 240v

Thank you very much for your answer. Actually its central AC. I live in Florida so I don't need to use it right know so I just set the fan on without either the AC or heat setting. I just want to know if this is using a lot of electricity. When I run it as climate control it definitely uses some power

Probably pulling about 5 to 7 amps

You are welcome. Running the blower continuously isn't a bad idea for comfort either. It tends ot even out temperature throughout the house. Also when cooling, leaving the blower on helps with dehumidification. Your electric bill will let you know if it's worth running to cancel the noise. I know many people who sleep with a fan for the white noise... myself included.

5 to 7 amps isn't really that much right?

At 6A at 120 V, running continuously 24 hrs a day and paying about 0.12/kwh is about $1.78/day

(6 A*120 V)/1000*24*0.12 = cost/day