Plan the work
Capture the symptoms
- Record indoor and outdoor temperatures if available, thermostat settings, sounds, cycling, visible water, ice, or unusual smells.
Find the equipment
- Photograph model and serial labels, filters, disconnect access, and the indoor and outdoor units without removing panels.
Separate system work
- Duct, electrical, condensate, and refrigerant tasks are distinct.
- Refrigerant-circuit work that may release refrigerant requires an EPA Section 608-certified technician.





