I am a layperson with no HVAC expertise and need some information from the experts.
My office is located in eastern PA in a seven year old commercial building rated as Class A commercial construction. It is a 45,000 square foot building on three floors. There are about 14 feet between the concrete floors. On each floor, the suspended ceilings are 9 feet, leaving about 5 feet of open plenum return above the ceiling.
Every summer, during hot weather (85 to 95 degrees), we experience times when the air conditioning is so poor that we are sweating during the day. We then call maintenance and the problem is corrected.
I have had individuals, who claim to have HVAC expertise, tell me that's just the way it is with open plenum returns - sometimes the cooling just isn't good enough and I should learn to live with it and sweat. This certainly does not seem right to me. It seems to me the problem stems from something else, possibly with the way the system is managed.
I have worked my entire career in office buildings and have never been told that maximum available air conditioning may still leave me sweating. A relatively new system in a relatively new building should work well and keep occupants cool. When you set your thermostats to 65 degrees and the room temperature is between 80 and 85 degrees, something is not right.
I would appreciate input from those of you who have the real expertise.