My brother has covered my parents' air intake with aluminum foil to the extent that only 25% of air can get into the central air natural gas furnace. The reason is because my mother doesn't like the few minutes of cold air blowing on her in the morning before the house heats up. It's a new furnace and it is a 4 ton Goodman unit. The A/C man put it on low speed for the winter so it would not blow out so hard, but my mother is not satisfied. So my brother who is an electrical engineer says that it will not hurt the motor, but it will increase the heat and decrease the amount of air coming out, and this has seemed to please my mother. But can't this hurt the motor. I think my brother is crazy. He says he is making it easier on the motor because the air is less dense. Is he right?
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