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Machinc
Machinc, General Contractor
Category: HVAC
Satisfied Customers: 945
Experience:  Has written home improvement articles since 2008. Earned South Carolina Residential Builders License in 1991.
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We have an intertherm heat pump that makes a funny noise,

Customer Question

We have an intertherm heat pump that makes a funny noise, partially shuts down, then fires up again. When it glitches, it makes a noise that suggests a short. When this happens, the lights in the house also dimm.
JA: Did you double-check the thermostat's settings? And what about the filters?
Customer: Don't know what they are and don't know the termostat settings.
JA: Do you plan on doing the work yourself?
Customer: Not really qualified.
JA: Anything else we should know to help you best?
Customer: Been going on for some time. The second unit does not do this. I thought it may be a lack of voltage, but now don't know. Think it is a problem it that second unit.
Submitted: 2 months ago.
Category: HVAC
Expert:  Machinc replied 2 months ago.
The lights dimming are often caused by a compressor or fan struggling to start.
Expert:  Machinc replied 2 months ago.
They this is a sign one of then is going bad or it could be as simple as a bad starter capacitor.
You really should have it professionally checked.
Expert:  Machinc replied 2 months ago.
The unit can continue to work like this for some time . Unfortunately it often finally quits when you need it the most.
Expert:  Machinc replied 2 months ago.
If you are not on a regular service
plan with a local company they are worth the money.
Expert:  Machinc replied 2 months ago.
They not only head iff trouble but if something does cause your unit to stop it may be covered under their service warranty.
Expert:  Machinc replied 2 months ago.
Its also good to already be established as a customer as trouble often happens during the "busy " season leaving one waiting for repairs.
Expert:  Machinc replied 2 months ago.
The sound that sounds like a short is the unit pulling extra amperage as it struggles to start .
In some instances this can actually trip the circuit breaker.
Expert:  Machinc replied 2 months ago.
The compressor and the fan motor pull the most even on normal start up and many installations in older homes cause a split second slight dimming of the lights on start up.
Expert:  Machinc replied 2 months ago.
Repeating myself, I reccomend getting the unit professionally serviced and inspected at your
earliest convenience.