Yearly maintenance, including cleaning and repairs, of your HVAC equipment, is essential as it increases your HVAC system’s lifespan.
Cleaning, in particular, keeps the HVAC equipment at its optimum functioning.
Before you start cleaning, you should switch off the electrical power and the fuel supply and let the unit cool off. Clean the combustion chamber using a small wire brush to scrape out built-up carbon and dust in the chamber. Use an industrial shop vacuum to clean up loose material. Dust removal helps reduce allergens and particles from going around the house. Inspect the chamber for corrosion or holes before replacing the cover. Next, check for holes in the flue that could cause carbon monoxide leaks, and patch any hole with foil tape. Replace any corroded flue. Replace oil filters by first closing the oil valve. Remove the old filter and replace it with a new one. Check and change your air filter if it is dirty. The unit’s blower moves heated air from the furnace through ducts to room vents. Therefore, you need to check the blower’s belt for looseness and any wear and tear. A loose belt will slow the blower’s ability to work effectively. Adjust a deflected belt by sliding the motor slightly backwards. Calculate the furnace efficiency using a combustion analyzer. The combustion analyzer measures gasses in the exhaust flue. Adjust the burner air gates for the proper ratio of fuel to air. This adjustment allows the fuel to burn completely before going up the chimney. Replace the oil nozzle, which atomizes the fuel right before it ignites. Check the shape and the flame color at the ignitor to see if there is complete oil combustion. Lastly, clean the floor vents by removing and vacuuming out the ducts. Instead of doing all these on your own, you can get help from a qualified HVAC repairman.