Along with temperature fluctuations, your furnace may emit some strange bangs and booms, especially if there has been a long period of inactivity. These noises should not be ignored and must readily get addressed by a professional HVAC contractor in Dallas, as they often indicate a delayed ignition in your furnace.

What Is Delayed Ignition?

Moisture builds up in the furnace after a period of abstinence, causing delayed ignition. Excess humidity causes the heating coil to corrode, obstructing the gas feed terminals to the burners. If the ports become blocked, the burners further down the line will not light.

As a result, when the burners eventually ignite, you’ll hear a loud buzz as the surplus gas accumulates. It feels like an explosion because this is what it is, surplus gas inside your furnace spontaneously combusting, and it is just as scary as it sounds. Humidity is not the only thing that can cause your furnace’s ignition to get delayed.

Another is the sulphur buildup left behind by the combustion of natural gas; sulphur buildup will emerge as a coat of white material on the burners’ or pilot beam’s surface. Rust and oxidation in older systems can cause gas ports to become obstructed or pilot lights to become misaligned. Apart from humidity, the most common reason is domestic dust and smudges, especially if your furnace is in the cellar.

What Are The Different Reasons For Delayed Ignition?

When you switch on your furnace, you’re likely to recognize a delayed ignition, especially if you haven’t used it in a while –

  • Building Up Of Moisture

Moisture tends to spread inside your furnace after a period of inactivity, decaying the firebox over time. Moisture-induced corrosion can eventually restrict the ports that feed gas to the furnace burners. The burners will not be able to ignite after you switch on the heater if this happens.

  • Soot And Residue Particles

While humidity and discolouration are the most likely reasons for furnace delayed ignition, dust and lint can ultimately cause issues. Before each summer period, have your furnace thoroughly checked and cleaned by experts or contact heating repair in Dallas professional.

  • Accumulation Of Sulphur

Due to a Sulphur accumulation created by environmental gas combustion, your furnace may encounter delayed ignition. You may have Sulphur buildup if your heaters or pilot light get encased in a white layer.

If your heating system holds an automated ignition system, hot gases buildup in the chamber could be the cause of the delayed ignition. While your heater most likely has a safety system in place to prevent this, the igniter may not come on quickly enough, cutting off the gas supply and causing buildup. If this is the case, your igniter will most likely need to be changed for your furnace to operate normally.

At Air Temp AC and Heating, we are reliable HVAC professionals in Texas and can help you save money on your maintenance and heating repair in Dallas. To book our expert repair and maintenance services, you can give us a call at 214-766-3962