On a frosty winter’s day here in Cedar Park, your gas furnace is hard at work, keeping your home warm and cozy. Feeling grateful? You’re not alone—it is one of the most popular forms of heating, as American as apple pie.
In 1919, New Jersey inventor Alice H. Parker filed a patent for the first gas-fueled furnace. Years later, the basic technology is the same—only it burns less gas. In fact, This Old House reviewed top furnace brands and notes that some models burn at 98 to 99 percent efficiency. Keep this in mind if you’ve owned your heater for 10 years or longer.
Our team at MLD Services can help you save big bucks on your monthly utility bill by replacing your aging furnace. And while we’re on the topic, we can help with your other HVAC needs: air conditioning, heat pumps, indoor air quality (IAQ), and more. All you need to do is call.
Furnaces that burn natural gas have four basic elements:
Your thermostat is the eyes and ears of the operation. If it senses your Williamson County home is below the target temperature, it sends signals to your furnace. Then, your furnace continues to cycle until your home is adequately warm. Finally, when it detects the desired temperature, the thermostat tells your furnace to stop running (until further notice).
When your thermostat sends out a signal, the ignitor is the first to respond. Like the ignition starts your car—the ignitor starts your furnace.
If your heater is a decade old (or older), the ignitor might be a pilot light. The pilot stays lit 24/7, running on a small stream of natural gas. Newer furnaces have an electric ignitor, a considerably safer option. Electric ignitors are less risky because if your pilot goes out, you will quickly have a house full of gas fumes.
Ready to ditch your older furnace with a pilot light? Our pros at MLD Services can recommend the best solution for your heating needs and budget. Schedule a consultation and consider upgrading!
Next on the chain is the combustion chamber. This is where the ignitor lights the fuel. The natural gas becomes intertwined with oxygen supplied via a vent system or draft hood. The oxygen ensures that the fuel burns both cleanly and efficiently.
Besides taking in oxygen, the ventilation system pushes out exhaust through your flue. Economy flues are usually made out of galvanized steel. However, homeowners with polypropylene venting see long-term savings due to higher efficiency. The latter is also quite easy to install.
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Whatever your flue is made out of—stay on top of maintenance. A clean flue ensures healthy air.
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The combustion chamber emits heat, which gets collected by the heat exchanger. From there, the heat exchanger collects and distributes the treated air to your ductwork using burner-heated metal tubes.
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When the tubes reach the right temperature, the furnace motor kicks on and begins blowing the air throughout your home with the help of fans.
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High-efficiency furnaces have variable-speed blowers, which use less energy and allow tighter temperature control. These premium models may also have multiple heat exchangers, which helps your furnace use less fuel.