Furnace Maintenance: Detailed Explanation of the Process

How Furnace Maintenance Protects Your Home and Health

This is the time of year to complete a routine checkup for a residential furnace; this is a responsible maintenance step for homeowners. Check-ups ensure that the furnace is prepared to function properly and efficiently all winter long. Maintenance often uncovers a weakening part that might create a breakdown. Maintenance is much preferred to experiencing a breakdown at the most inopportune time during a deep cold snap.

Furnace Maintenance might seem like a slight, even unnecessary, task. To fully appreciate the work provided by trained professionals, it might be useful to know what happens and why the maintenance tasks are important. So, what is involved in furnace maintenance?

There are three types of furnaces used in our region:

  1. Natural gas-powered furnaces
  2. Electric furnaces
  3. Heat pumps

All three types of furnaces use some of the same components. Maintenance will inspect, clean, and test these components to enhance performance and efficiency. These parts include:

  • Electrical controls. Furnaces employ a complex network of sensors, switches, and control devices that detect temperature, turn various components on and off, and set limits for safe functioning. The current that flows through these control mechanisms ranges from 220 volts to 14 volts; needless to say, it is extremely important to know the difference between electrical currents.
  • The main ON/OFF switch is called the thermostat, that small control device attached to the wall. Thermostats are usually battery-powered, and the checkup will include changing the batteries.
  • A network of ducts transports the heated, conditioned air throughout the home and brings it back to the furnace for redistribution. A heater maintenance visit will include a general inspection of the visible ductwork to uncover glaring problems.

Gas-Powered Furnace Maintenance

These furnaces create heat by the combustion of natural gas. Natural gas is both flammable and explosive. Combustion produces both carbon dioxide and carbon monoxide. Both gases are lethal when introduced to the indoor air. For these reasons, it is vitally important to check the system for safety as well as efficiency.

  • The ignition system receives an electronic signal, calling for a heating/burning cycle. Old systems used a pilot light. New systems use an electronic ignition system to light the flame. Dirt and soot can interfere with proper ignition, so it needs to be carefully cleaned.
  • A burner assembly burns the natural gas in a chamber to collect the heat. Another product of the combustion of natural gas is water vapor. When water vapor contacts cast iron, rust will develop. The burner assembly needs to be inspected and cleaned for both safety and efficiency.
  • The combustion chamber is a heat exchange chamber that transfers the heat to an outer chamber. Rust is corrosive and can create openings in the heat exchanger and exhaust pipe, allowing exhaust to enter the home with disastrous consequences.

Preventive furnace maintenance of natural gas-powered furnaces is very important.

Electric Furnace Maintenance

These furnaces use electrical resistance to create heat. Current passes through a strong heating element and the element gets red hot—about 1,1000 Fahrenheit. Air is passed over the heating elements and blown into the home. Furnace maintenance includes inspection of the elements and controls.

Heat Pump Maintenance

Heat pump furnaces do not create heat; they simply move heat from outdoors. It is the air conditioner in reverse. Instead of moving heat inside the house to the outside, it moves heat from outside the house inside. This will only work efficiently until the outside air drops below 350, when it becomes harder to collect heat from outdoor air. Heat pumps use a heating element system as a backup. Maintenance for a heat pump includes:

  • Testing the refrigerant gas that makes heat transfer possible.
  • Cleaning and inspecting the outdoor condenser coil
  • Cleaning and inspecting the indoor evaporator coil

Boost Performance and Longevity with Regular Furnace Maintenance From All Cool AC & Heating

Don’t risk a breakdown in the freezing cold—ensure your home’s safety and comfort by scheduling your essential furnace maintenance today. The experts at All Cool AC and Heating are ready to inspect your system, enhance its efficiency, and prevent those costly winter surprises. Call All Cool AC & Heating now to book your appointment and prepare for a worry-free winter!