Latest Discussions : HVAC

cgarza

07:26PM | 07/15/07
Member Since: 11/25/06
2 lifetime posts
I have a real old furnace that works ok. the problem I'm having is the air coming out the vents.the air is pushing enough threw the vents to keep my house cold. It seems at night is the only time it feels cool. I have cleaned the coils,oiled the motor,cleaned the blower and tighten the belt.the only thing I can think of is the motor is going bad. its a marathon electric 115 volts,1/3hp 1725 rpms.should I buy a new one with more power?

MistressEll

05:38PM | 07/18/07
Member Since: 01/30/05
360 lifetime posts
if there isn't enough power.....

cgarza

07:03PM | 07/18/07
Member Since: 11/25/06
2 lifetime posts
I think I'm going to just buy a new furnace.something up to date.

Billhart

09:28PM | 07/18/07
Member Since: 04/25/05
1915 lifetime posts
MistressEll, lesliek3093, Et al

Within reason low voltage does not cause the motor to slow down.

The motor is an Induction motor. As such it runs at a synchronous speeds less the slip.

As the voltage drops the motor will only change speed slight until it can delive enough torque and the motor stalls.


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