A homeowner in Allen, TX requested spring maintenance before selling their home. During the inspection, our technician discovered the system was not cooling properly. The issue was traced to a faulty indoor thermal expansion valve (TXV) that wasn't performing to manufacturer specifications.
The superheat reading was 40 degrees, which is well above the proper range of 8-17 degrees. This high superheat indicates the TXV needs replacement to restore proper cooling function. American Heritage Air Conditioning & Heating Solutions also found that the system was missing a locking cap, which is an important safety feature that prevents accidental refrigerant inhalation.
These maintenance checks are crucial for home sales, as they help identify issues that could affect system performance and safety. Proper superheat levels ensure efficient cooling and help prevent compressor damage over time.