10/17/2026
ITS THAT TIME OF YEAR WHEN YOU'LL BE SWITCHING FROM AC to HEAT. HERE'S SOME BASIC SAFETY AND THINGS TO THINK ABOUT BEFORE STARTING UP YOUR FURNACE (most of which came using AI)
To Safely Start Your Furnace for the first time after summer, before turning it on do a quick safety check, replace or clean the air filter, clear vents, and test detectors. These steps prevent breakdowns, improve efficiency, and keep your home safe.
1. Safety First - Clear the furnace area: Remove clutter, stored items, or combustibles within at least 30 inches of the unit.
2. If your home is heated using propane, oil, kerosene, or wood, check your carbon monoxide (CO) detectors: Test them and replace batteries and make sure you have them installed near sleeping areas and in the room adjacent the furnace room.
3. Inspect for gas leaks: Smell for gas; if present, evacuate and call 911 and your propane company immediately!
4. Ensure power is on: Check the furnace switch and circuit breaker; set thermostat to HEAT with a temperature above room tempempature.
5. Air Quality & Airflow: Replace or clean the air filter! A dirty filter restricts airflow, makes the furnace work harder, and reduces efficiency.
6. Clear vents and registers: Remove furniture, rugs, or curtains blocking supply/return grilles.
7. Inspect ducts: Look for kinks, disconnections, or debris; repair as needed.
8. Fuel & System Check: If you have a propane gas furnace, confirm the gas valve is open, ensure the pilot light is lit and steady, and check burner flame color (steady blue is normal) after lighting. If you have an oil fired furnace verify there is oil in the tank. Verify that the pilot light is lit and and steady.
9. Test the System by setting the Thermostat to HEAT and above room temperature and confirm warm air is delivered to the vents.
10. Listen for unusual sounds such as grinding, squealing, or banging that may indicate issues requiring a call to a HVAC professional.
11. Run your system for a few minutes to ensure that heat is consistent and no error codes appear on the thermostat.
12. Oftentimes, when you first start your furnace, you may smell something burning. This may be from dust that accumulated on the coils or burner over the summer that is burned off after the furnace was started. If the smell persists, or if you see smoke do not hesitate to call 911!