hawaii
02-28-2010, 10:49 PM
I have an old 6-ton commercial Carrier heat-pump AC system, 38AQ-40RR.
The evaporator coil just bit the dust. We're looking to replace it, but it's a major operation just to get to the air-handling unit itself due to its location above a ceiling grid. Since we're going in anway, we're thinking ot replacing the whole air-handler unit instead of just the coil. It uses R22.
* Can we replace just the inside unit with an r410a indoor air handler but still keep the same old rooftop unit?
The evaporator coil just bit the dust. We're looking to replace it, but it's a major operation just to get to the air-handling unit itself due to its location above a ceiling grid. Since we're going in anway, we're thinking ot replacing the whole air-handler unit instead of just the coil. It uses R22.
* Can we replace just the inside unit with an r410a indoor air handler but still keep the same old rooftop unit?