Inspecting and cleaning air filters, coils, and blower components

Checking refrigerant levels and refilling if necessary

Inspecting electrical connections and tightening loose wires

Lubricating moving parts (fans, motors, etc.)

Calibrating thermostats and testing system performance

Cleaning condensate drain lines and checking for clogs

Inspecting ductwork for leaks or blockages

Install new air conditioning units, furnaces, or heat pumps

Replace outdated HVAC systems with energy-efficient models

Install ductwork, vents, and registers

Configure zoning systems and smart thermostats

Replacing worn-out or malfunctioning components (capacitors, contactors, fans, etc.)

Fixing refrigerant leaks and recharging refrigerant

Repairing or replacing thermostats

Replacing blower motors or fan belts

Repairing electrical components, control boards, or relays

Fixing frozen coils or addressing drainage issues