Goodman GSXC18 User's Guide
![Goodman GSXC18 manual cover](/images/8b45df1085483d2ffecb5315/thumbs/thumb175x175.webp)
To perform regular maintenance on your Goodman GSXC18, ensure you clean or replace the air filters every 1-3 months, inspect the outdoor unit for debris, and schedule annual professional maintenance to check refrigerant levels and system efficiency.
If your GSXC18 is not cooling properly, check that the thermostat is set correctly, the air filter is clean, and that there is no debris obstructing the outdoor unit. If problems persist, contact a professional technician to inspect the refrigerant levels and electrical components.
Improve efficiency by ensuring proper insulation in your home, sealing any air leaks, using a programmable thermostat, maintaining clean filters, and keeping the outdoor unit free of debris. Regular professional maintenance is also recommended.
The recommended thermostat setting for cooling is typically around 78°F when you are home and higher when you are away. This setting balances comfort and energy efficiency.
Replace the air filter every 1-3 months, depending on usage and air quality in your home. Homes with pets or allergy sufferers may require more frequent changes.
Common signs include unusual noises, reduced airflow, increased energy bills, frequent cycling, or the unit not cooling effectively. If you notice any of these, it may be time to call a professional.
To reset after a power outage, turn off the thermostat, switch off the circuit breaker for the unit, wait about 30 seconds, and then turn the breaker and thermostat back on.
If your unit is leaking water, check for a clogged condensate drain line, ensure the drain pan is not damaged, and verify that the unit is properly leveled. A technician may be needed if the issue persists.
It is recommended to have a certified HVAC professional install your GSXC18 to ensure it is properly set up and to maintain the warranty. Self-installation is not advised due to the complexity of the system.
The Goodman GSXC18 uses R-410A refrigerant, which is environmentally friendly and efficient. This refrigerant requires special handling and should only be serviced by professionals.