Heat Pump In Attic Sweats

So you may think of changing the filters or cleaning the air handler ducts to solve the problem.
Heat pump in attic sweats. It carries refrigerant inside. So you think putting a heat pump in the attic is a bad idea. The water is coming from condensation from the cold pipe and the humid air. Not sure what your contractor meant by putting pump in the attic.
This will insulate the diffuser face from the warmer air in the attic space and prevent the face from collecting moisture decreasing the δt. First water dripping off of your ducts and onto your insulation can cause the insulation to compress which decreases it s r value or ability to insulate. With the temperature differential minimized sweating will decrease or be eliminated. 07 08 2015 07 42 pm 4.
This pump has a secondary float switch to shut the system down if the pump fails. An easier method of preventing sweating is to install an insulation blanket on the back side of the diffuser. The pump in heat pump is actually the compressor which is located in the outside condenser unit with a split system. So if the thermostat is sitting at 74 degrees the air being pushed into the duct system is going to be right around 54 degrees.
If we take into consideration that on a hot summer day the attic where your ducts live can be as warm as 150 degrees that 90 100 difference in the temperature is what can cause the condensation to begin. So the first sign the condensate pump took a crap is a wet spot on the ceiling. Reduced airflow can be a sign that your a c compressor is no longer working as it should. If you are experiencing any of the following it may be time to have an hvac professional diagnose the cause of your ductwork sweating and fix the problem.
When water condenses and drips into your attic or home it can cause a some serious secondary problems. That happens on the outside of the pipe. If replacing the indoor air filter does not improve the situation the compressor may need attention. As the air flow is reduced the temperature of the air goes below the dew point and causes sweating.
Hope this clears things up. The evaporator coil is in the air handler. In the case of a central air conditioner or heat pump the pipe itself does not carry water.