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Question DetailsAsked on 8/26/2015

HVAC was just installed yesterday and my outside AC condenser is blowing cold air? is this right?

when i put my hand over the fan and move it around the top of the unit some areas are blowing hot air but the top quarter portion is blowing cold air. is this right? I feel like my house should be cooling faster than it is

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2 Answers


Two speed compressor?High efficiency? WIth either this could be normal at lower outdoors temperatures.

Is it maintaining the indoor temperature set point? If so, could be fine.


Answered 5 years ago by BayAreaAC


Don't know why this question, which is almost a year old, popped up on today's current questions list. But - for future readers, common causes of this (obviously there are exceptions and different types of units, but in general):

1) fan is not shrouded properly (either bad design or missing/maladjusted covers) or is too close to obstructions on the output side, so it is recirculating air through the condensor - say out the top but back in the bottom, rather than running the outside air through it "single pass" - in one side and out and away on the other side so it is blowing fresh (hopefully cooler) air through the unit at all times. Though if that is happening the "cool" air you feel would be at outside air temps at lowest, and probably warmer than that, though not as warm as the hot-zone airflow.

2) unit is low on gas or a pressure/temperature valve is malfunctioning, so instead of the high pressure side being a liquid from the compressor through the condenser coil allthe way through the tubing up to the evaporator coil, it is vaporizing in the condensor coil and causing cooling in that output area of the condensor coil. Would commonly also be frosting up the tubing possibly in the condensor coil cold area or possibly not, but likely on the lineset heading out to the evaporator coil (which is in the ducting or air handler unit) - and certainly the cooling of the air in ducts would be significantly decreased. Sounds like the latter may the case because you say it is not cooling fast enough.

Could be a mis-set or defective TXP or TVP valve (which controls the refrigerant flow and pressure), a compressor not compressing to proper pressure, an in-line shutoff valve partly closed, a gas leak (probably most common new install cause), or the unit was not properly charged with enough gas in the first place - though all these causes except a leak or newly malfunction TXP valve would likely have caused poor cooling right from the new unit startup.

Certainly time to call the vendor and complain about inadequate cooling and have him come check it out under installation warranty.

Answered 4 years ago by LCD

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