Amana Heat Pump not Cooling Below 79° F

[hvacvegas]

I heard that before...and was a little concerned about the 5 ton replacing the old 4.5 ton in my 2758 SQFT home...as the rule of thumb dictates - 600 p/ton? or was it 500 SQFT?

One point still eludes me...why didn't I have any issues the first two seasons?

Anyhow...thanks for the advice and after the repairs are made to the return...I will drop by to post the results.

When did you get your computer equitment?
Electronics, especially servers, put out alot of heat.

If you have a thermometer, try and take 2 temperatures. One going into the equitment, one coming out. As close to the air handler as possible.

[THE_BDC]

Wow, .9" of an inch on the Return Side alone is terrible; the negative Return side is added to the Supply Side for the total static which should be .5" or as he said .6" tops.

The 2.5%m summer design in Tampa FL is 91-F dry bulb; 77-F wet bulb for a high 54% RH; at that 91-F which means a loot of grains of moisture per lb of air to be removed by the A/C. That is a reason not to oversize the system.

Yes, that Return Air problem has to be properly resolved for the system to begin to cool properly. Get it done right & then check & balance the charge to the new higher heatload on the indoor coil.

Hey Darrel and HVAC community...

I just wanted to give you all an update...I had a good company come out and increase the size of two of the return runs and the riser (now rectangular ductboard), and replaced the mixing box...they also needed to add 4.5 LBs of freon (which surprised me) and re-adjusted the blower profile to 20° F split across the coil...wow...what a difference! The house is now cooling at whatever temp I set it to (75° F) and is operating at normal pressures etc.

Thanks again to everyone for your advice and suggestions.

BDC