Inspect Electrical Wiring
If your HVAC unit has loose wiring or a gas leak, it could start a fire. Overheating is more likely to happen when wires are worn; signs of wear include smoke or a smell like something is burning. If the gas connections are not right, gas can leak from the unit, making fires more likely and lowering the quality of the air inside.
You should change your air filter at least once a month and no more than once every three months. If you avoid this, your HVAC system could have several problems. The most dangerous thing is a gas furnace. If the airflow is blocked, the parts of the unit may work too hard, and the whole system could overheat.
A buildup of mold and dust on your vents is highly combustible. If dirt and dust build up in your vents, filters, and coils, it can block the flow of air and cause your unit to stop working. Make sure to change your filters often and keep the vents open in every room to keep your system from getting moldy or damaged.
Don’t Cover The Furnace System
Most furnaces are in the garage or a closet in your home. Storing things in your furnace closet can be very dangerous. Make sure to give your HVAC system a lot of space and keep the area around it clean and free of anything that could catch fire.