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The other replies to your question are right on. The key to your problem is likely the evaporator coil. You need to reduce the temperature of the evap coil so that it will de-humidify as well (but not so much that it freezes!). Be sure the air handler is delivering the proper amount of air...

You need a pounds in, inches out pressure regulator. The outlet pressure will typically be set a 7.0" w.c. You must design a gas supply system that will deliver the appropriate volume of fuel to the appliance from the pressure regulator so that the gas pressure does not drop more than...

Yikes! Seriously undersized cooling & heating system? Your knees are knocking in winter and you are sweating buckets in the summer? My best advice is to changeout the whole system now and avoid all the costs associated with monkeying around with a basically useless system. An undersized...

Attic systems can have some quirky problems that relate to the transmission of noise and vibration. Is it very important that the system be quiet? If so, you may want to consult with an accoustical engineer because noise and vibration problems are very difficult to resolve after the fact. I...

You may have a run into a phenomena known as "close coupling" in which the air space around the heat pump air handlers cabinets is actually transmitting vibration to the walls and ceiling. Typically, any air handler or HVAC device mounted above a false ceiling should have at least 3...

Judging by the number of replies over such a long period of time, I'm wondering if stevealexander has been able to enjoy his comfort system at all! I think that's why he has asked for help, his HVAC system is underperforming. I'll put in my estimate of the situation and hope it proves to be of...