Owner's Checklist
A fast, safe way to rule out common issues before you call for service. This checklist takes just a few minutes and can save you time and money, but safety comes first.
1) If you smell gas, contact your gas supplier immediately
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Leave the building right away. Do not use light switches, phones, or appliances inside the home.
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From a safe location, call your gas company (use the emergency number on your bill) or dial 911 if the smell is strong.
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Do not re-enter the home or try to relight any equipment until a professional says it’s safe.
2) Check that the thermostat is set properly
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Make sure it’s on the correct mode: Heat in winter, Cool in summer.
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Set the temperature 3–5° beyond the current room temperature to force a call for heating/cooling.
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Confirm Fan is on Auto (or On for constant circulation).
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Replace batteries if applicable and cancel any hold/schedule that might be overriding your setting.
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For smart thermostats, verify Wi-Fi connection and that the app isn’t enforcing an eco setpoint.
3) Check that fuses/breakers are okay and power is on to the unit
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Inspect your electrical panel for a tripped breaker; fully switch it off, then back on to reset.
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Verify the furnace switch (often on a wall or the unit itself) is set to ON.
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Make sure the service disconnect near the outdoor AC/heat pump is seated properly.
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Confirm the blower door on the furnace is closed firmly; many systems won’t run if the door switch isn’t engaged.
4) Check air filters every month
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Locate your filter: at the return grille, in a filter rack beside the furnace, or inside the blower compartment.
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If it looks gray, dusty, or clogged, replace it. A dirty filter restricts airflow and can shut systems down.
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Use the correct size and airflow arrow (arrow points toward the furnace/blower).
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Set a monthly reminder—clean airflow prevents many service calls.
5) Have your heating & cooling system checked regularly
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Schedule professional maintenance: once in spring for cooling and once in fall for heating.
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Routine checks improve safety, efficiency, and equipment life, and catch small problems before they become big ones.
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Ask for a written report and keep it with your home records.