
Replace faulty evaporator coils by first locating them behind the front panel near the indoor air handler. Disconnect the refrigerant lines carefully–pressure varies between 18,000 BTU (5.2 kW) and 36,000 BTU (10.5 kW) models, so bleed excess gas before removal. The coil should slide out after unscrewing four 10mm bolts. Clean the mating surface with wire brush to prevent air leaks before installing the new part. Verify torque specs on refrigerant fittings–overtightening causes flare damage.








