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  1. What is % increase in load from an 85 degrees to 95 .

    If all things are the same considering a 100% sunny day what is the aproximate increase in load from 85-95 outside temperature??
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    Radius elbow on return drop..?

    I was told that installing an elbow on the bottom of the return drop can increase air flow 25% .. Rather then the end cap that you typically see ..has anyone tested this or improved cooling/airflow ...
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    Heat load calculation for windows

    Was wondering what the formula for heat gain calculation is for windows receiving direct sunlight..
  4. How much heat is produced running a couple of burners on kitchen stove

    Customer complained she had stat set at 69 and after she was done cooking the stat was up to 72 degrees.. It was located in adjoining room near kitchen..
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    Setting t stat at 69 degrees

    I told customer setting the stat this low is not a practical set point.. Since these systems are not designed maintain that kind of indoor temp.. Due tightness of duct system and home..
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    Honeywell 8000 thermostat fan on question

    I noticed that on a call for cooling when the fan is set to on about 10-15 seconds before the outdoor condenser starts the indoor fan motor hesitates or switches off for a quick second.. Is this the...
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    I think this is my issue described in this...

    I think this is my issue described in this article..When a compressor fails short, what happens is that insulation on the wires has worn off or burned off or broken inside the compressor. This allows...
  8. Welded contactor killed condenser fan motor

    Had a contactor get welded from loose wire on compressor .. Only had one leg that had continuity .. I believe this condition fried the condenser fan motor .. I changed the contactor and capacitor ...
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    Failed compressor winding test good

    Can the stator/rotor of compressor be shorted and still have continuity in the windings?
  10. Would an 8 year old compressor in a Westinghouse unit be under warranty?

    Would an 8 year old compressor in a Westinghouse unit be under warranty?
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    Went back and found burnt wires on the start and...

    Went back and found burnt wires on the start and common terminals of the compressor. I repaired and replaced the wires .i then tried to restart the unit.. Compressor would not start or do...
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    Could all this be caused bya loose wire on the...

    Could all this be caused bya loose wire on the circuit breaker..?
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    Would pulling Lra or losing a leg of power damage...

    Would pulling Lra or losing a leg of power damage or cause these issues .would this damagethe capacitor? Also the condenser fan motor was replaed a week ago after it was cycling on and off on thermal...
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    Common wire on compressor burnt

    Found a compressor with the common wire that had popped off the terminal and was a little burnt . The breaker had popped .. I replaced the wire and terminal and the unit ran fine for a couple weeks ....
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    I ran a little test .. I blocked off 75% of the...

    I ran a little test .. I blocked off 75% of the condenser with carboard and the amperage only moved from 1.6 up to 1.7 .. Dirty condensers make a miniscule difference inmho..
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    Thought fan motors have one rating unlike a ...

    Thought fan motors have one rating unlike a compressor.. With FLA and RLA distinction..
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    Amperage on condenser fan motor

    I installed a condenser fan motor that was running at 1.6 amps and was rated for 1.6 amps. Is this too close to rating ?? Should i be running slightly below rating on motor..?
  18. Should the customer be told the condenser is...

    Should the customer be told the condenser is destroyed if this condition occurs? Would a txv protect the system somewhat from slugging??
  19. If Blower motor quits is the compressor pumping liquid?

    Have always heard a small amount of refrigerant can wreck the compressor.. So on a residential split system when the blower quits and the outdoor condenser continues to run and ices up is that...
  20. Higher seer unit freeze in low ambiant conditions

    I noticed that some of the higher seer r 22 units do not really build up enough head pressure when the outdoor temp is in the 60 degree range to keep the suction above freezing.. Is this common?
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    Voltage across a capcitor on A/C

    Why is this voltage running 390 volts from herm to common on the cap? Is this even a worthwhile check ? When replacing an open capacitor what else should be checked to avoid a callback?
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    What size is this Lennox Condenser

    Model# HS18-311-4p
    Serial# 5885F03767
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    Is hvac for loners ?

    It gets old being by yourself on the roof or in a mechanical room all day ?
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    And the silence is deafeaning..

    And the silence is deafeaning..
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    Any Chicago union shops hiring techs??

    ??
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