A/C air temp. at the registers? - Canadian TV, Computing and Home Theatre Forums

276YT · 2012-08-15, 07:06 PM

.... the outside temp. is 32C today and the relative humidity reads 80%.

What air temp. can I expect at the registers. Thanks.

txv · 2012-08-15, 07:14 PM

You should see a 10-20F difference between the supply and return depending on the humidity level in the house and the amount of air the blower is moving.

Humidity inside reduces the difference.

276YT · 2012-08-15, 07:51 PM

My air temp. reads currently 65F at the incoming air register.

.... what should be the readings for the relative humidity at the air registers?

txv · 2012-08-15, 08:44 PM

65F is a really low return air temperature and 80% is through the roof.

The chart I was looking at only goes down to 68F return.

Temperature readings need to be taken at the air handler/furnace, especially if the ductwork goes through an unconditioned space.

If it doesn't seem to be cooling properly, call for service.

276YT · 2012-08-15, 10:48 PM

This tread is closed> Issue is solved.

2012-08-15, 07:06 PM	#1
276YT Rookie Join Date: Feb 2012 Posts: 17	A/C air temp. at the registers? .... the outside temp. is 32C today and the relative humidity reads 80%. What air temp. can I expect at the registers. Thanks.

2012-08-15, 07:14 PM	#2
txv Veteran Join Date: Oct 2008 Location: Canada Posts: 1,740	You should see a 10-20F difference between the supply and return depending on the humidity level in the house and the amount of air the blower is moving. Humidity inside reduces the difference. __________________ WARNING: The HVAC information I provide is not based on field experience and DOES NOT constitute professional advice.

2012-08-15, 08:44 PM	#4
txv Veteran Join Date: Oct 2008 Location: Canada Posts: 1,740	65F is a really low return air temperature and 80% is through the roof. The chart I was looking at only goes down to 68F return. Temperature readings need to be taken at the air handler/furnace, especially if the ductwork goes through an unconditioned space. If it doesn't seem to be cooling properly, call for service. __________________ WARNING: The HVAC information I provide is not based on field experience and DOES NOT constitute professional advice.

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2012-08-15, 07:51 PM	#3
276YT Rookie Join Date: Feb 2012 Posts: 17	My air temp. reads currently 65F at the incoming air register. .... what should be the readings for the relative humidity at the air registers?

2012-08-15, 10:48 PM	#5
276YT Rookie Join Date: Feb 2012 Posts: 17	This tread is closed> Issue is solved.