HVAC Diagnostics
Select the system issue:
AC Blowing Warm
Step 1: Is the outdoor unit fan spinning?
Fan Not Blowing
Step 1: Set thermostat fan to "ON". Does it blow?
Unit Frozen
Step 1: Is the air filter dirty?
Water Leak
Step 1: Is the primary drain line dripping outside?
Loud Noise
Step 1: Is it a metallic screeching sound?
Furnace No Heat
Step 1: Does the small inducer fan start up?
Short Cycling
Step 1: Does it run for less than 2 minutes?
Thermostat Blank
Step 1: Check the float switch at the indoor unit. Is it full of water?
Burning Smell
Step 1: Is it the first time turning on heat this season?
High Bills
Step 1: Is the "Emergency Heat" light on thermostat?
Recommendation: