<br>Start with system age efficiency and recent failures. If repair costs approach a practical portion of replacement and the unit is older compare installed options with warranties and financing. A quality tune up verifies airflow cleans coils tests electricals and [book An appointment](https://git.lenfortech.com/fatimaxwf0175) safeties checks refrigerant and calibrates the thermostat. For comfort consider filtration duct sealing and regular maintenance. see our services