Inspection of AC or furnace components. Air filters check out. Checking thermostat operation. Lubricating moving parts. Tightening electrical connections. Testing system startup and shutdown.
Standard
Everything in the Basic package plus: Deep cleaning of coils (AC) or burners(furnace). Checking refrigerant levels (AC). Testing and calibrating systems efficiency.
Premium
Everything in the Standard package plus: Carbon monoxide test (furnace). Priority service repairs. Checking for gas leaks (furnace). Inspecting and cleaning blower assembly. Discount on par and labor if repairs are needed.