The thermostat is an essential component of your HVAC system in St. Lucie County, FL. Like all HVAC components, the thermostat can develop issues. Unfortunately, these issues often go unnoticed or get neglected. Recognizing the warning signs of a bad thermostat could help you diagnose issues early on and avoid more extensive and costly furnace problems in the future.

Furnace Won’t Turn On

The furnace can’t turn on when the thermostat malfunctions or loses power. Old batteries, an outdated system, or loose wiring can cause this power outage. Equipment failure and power issues also cause the furnace to short-cycle or continuously run.

Blank Thermostat Display

If your furnace is cycling on and off, but the thermostat’s display is blank or inaccurate, it’s likely faulty or loose wiring. Loose or faulty wiring causes the system to send mixed signals. So, the furnace will sometimes ignore commands from the thermostat.

Loose wires cause a blank display or unresponsive buttons. If the buttons are unresponsive, you’ll need a thermostat replacement.

Outdated Thermostat

The longevity of your thermostat depends on its model and functionality. But, generally, once a thermostat reaches 10 years old or older, it’s considered outdated.

Many thermostats can begin to malfunction around the tenth year of service. If your thermostat is at least 10 years old and malfunctioning, replace it before it results in damage to your furnace due to overworking the system.

Inaccurate Temperature Readings

Malfunctioning internal sensors or a faulty thermostat can give inaccurate temperature readings. Thus, your home will feel warmer or cooler than the displayed temperature. The furnace may also cycle on or off before your home reaches the right/set temperature.

High Energy Bills

A malfunctioning thermostat can prevent the furnace from shutting off or cause short-cycling. These issues overwork your heater, leading to higher energy bills. If you notice thermostat and furnace issues, call Krauss & Crane Air Conditioning for an inspection and heating repair.

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