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.
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.
Hi Guys...I'm Back!
Only a year later...and I'm having new issues - you could read the older posts to get complete details on my past AC & issues as I was pretty thorough, but let me sum it up: I have an Amana 5 Ton/15 Seer Heat Pump/R-410A Refrigerant (ASZ140601), Amana Variable-Speed Air Handler (MBVC2000AA1), & Amana/Goodman Evaporator Coil (CAPF4961D6). This unit is only 3.5 years old and we are almost done with the 3rd season...
Here's the issue...we had the annual maintenance check/clean and the Tech who came out said that the Split is way off...and that the airflow is restricted to the coil etc...that the "Out Temp" is 66 -70 F....and the "In Temp" is 72 F & Thermostat says 74 F. He also said that there was mold or Bio/Bacteria inside the coil on the Return side. He said (to my wife) that we needed an Acid Wash first ($) and then an install of a Dual U/V light System ($) plus a Service Charge lol ($)
I am just not sure what to do here...the guy was very unprofessional and was from the original company who screwed up the original installation so I don't know if he was on the level. Even if he was...I just don't know if I want or need to spend that kind of money!
I'll take any advice at this point...
For a 5-Ton system, there should have been at least two (2) extra large return air filter rack areas.
Depending on the type of filter used, the velocity through the filter may have been way too high causing debris blow-by loading the blower wheel blades with lint & insulating the fins & partially plugging the cooling coil.
This is just one reasoned hunch; it may be a different cause.
However; for a media type filter, it needs at least (two) 30" X 24" filters to get it close enough (using Hart&Cooley Data for 300-fpm through the filter).
Was hoping to hear from you...I have two return vents in the house - one is in master bedroom and is 12x12 in ceiling and not a filter vent...the other is in a small hallway ceiling between the two other bedrooms - this is the new one the good company enlarged to a 18x18 vent...it's a filter vent, but I have not installed a filter because...out in the garage where the Air Handler is...it has a filter chamber below coil that houses a 20x25x1 washable filter (the only filter). Also...I've never had a mold issue in 30 years...can I clean the coils myself and install my own UV light or...do I need one? What would you do?
Thanks for the response...
Why did you call the first company back ,call the good company . Some washable filters are terrible for air flow especially a 20-25 for 5 tons
Fool me once, shame on you. Fool me twice shame one me.
If you have a company that does a good job....CALL THEM BACK.
If you have a company that didn't do a good job....Don't call them back.
Main point being-in a trade (hvac) that requires a vast knowledge level and expensive tools...don't fall for the "specials" because if you think you are getting "quality at a discount" in this trade...you will be sadly mistaken.
May be not helpful for you at this point, but maybe the next person that reads this thread.
First off...this isn't my first rodeo and I didn't ask for any advice on being a good consumer...I posted here in hopes that I would receive some tips on Coil cleaning/UV installation - this is the HVAC Community right? Not that its important (and it isn't)...but if you would have read my posts, you would have understood that I never asked this company to come back, my wife did.