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Furnace Thermostats

Your furnace thermostat is the remote control for your warmth at home. When it stops working properly, so does your comfort.

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Furnace Thermostats

Heating systems consist of complex technologies and ingenious innovations, but a single component controls the whole thing—the thermostat. Think about it: you could have a brand new, high-efficiency furnace and pristine ductwork, but you're not going to feel any warmth if your furnace thermostat doesn't send the signal for heating to begin when needed. That could be a real problem on an especially cold day.

What kind of thermostat do you have?

Older heating systems are often controlled by electro-mechanical thermostats, whereas newer systems are often controlled digitally—sometimes with the latest Wifi-enabled thermostats, like Nest. Whichever kind you have, various different thermostats do essentially the same job: controlling the temperature of your home by starting or shutting down your heating system.

  • Electro-mechanical thermostats have small metal coils and a mercury tube inside. Depending on the temperature of the room in which the thermostat is situated, the coils will either contract or expand, pushing the mercury to one end of its tube or the other. That's what tells your HVAC system to either turn on or off.

  • Digital thermostats are a lot more accurate than their electro-mechanical predecessors. Virtually all are programmable, allowing you to set running times for your system to maintain a specified temperature. This extra control empowers you to reduce energy costs by minimizing your heating (and cooling) when you don't need as much.

  • Wifi-enabled thermostats are a great way to control your home's temperature when you're not there. That means if there's a cold snap while you're out, you can make sure you come home to a warm, welcoming environment. Even better, many smart and connected thermostats "learn" your routine—including times when the house is unoccupied—and automatically adjust heating and cooling schedules to save you money on your utility bills. Unlike other programmable thermostats, the Nest thermostat is programmed simply by using it. After a week or so, the Nest will have programmed itself!

Maintain control of your comfort

If your thermostat is starting to show its age—or you're simply ready to upgrade to something more modern—it's time to arrange an appointment with your local ARS®/Rescue Rooter® HVAC specialist. We'll answer any questions or concerns you have about your heating system, and help you get the best out of it all year-round.

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