Don’t Panic When Your Furnace Won’t Shut Down

October 21, 2026

Updated October 21, 2026 If your furnace or heating system won’t shut down, you shouldn’t worry. You just need to set up a service call with your local heating company. In the meantime, there are ways to shut down the unit to avoid any further damage to your system. Why Won’t My System Turn Off? When your system is constantly running, this is a sign that something is wrong. There are several causes for this issue. One of the most common issues is the thermostat. The wiring, switches, or heating sensors can fail on your unit. If this is the case, then you’ll need to replace the thermostat with a newer model. A damaged primary controller can also cause the furnace to stay turned on. This is the main heating element of the system. If it stops functioning, then the furnace can’t regulate temperature. Your system may have another mechanical issue as well. A boiler system uses a check valve to warm your home through heated water sent through radiators. A properly functioning valve will circulate the water throughout the system. A faulty check valve could be the cause of this type of heating system to fail. If your heating...

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Furnace Maintenance and Your Warranty: What O’Fallon Homeowners Need to Know

October 19, 2026

As a homeowner, your furnace warranty provides peace of mind and acts as valuable protection against unexpected repair costs. A common question we hear is wondering whether routine furnace maintenance is necessary to keep that warranty valid. The short answer is yes. In many cases, professional maintenance is a key requirement for your warranty. The exact requirements depend on the manufacturer, the specific equipment, your original installation records, and your service history. Most furnace warranties depend on proper installation by a qualified professional and documented, routine maintenance. Neglecting annual service can give manufacturers grounds to deny a claim, leaving you to pay for a part that should have been covered. How Furnace Warranties Usually Work A new furnace typically comes with a manufacturer’s limited parts warranty. This warranty covers the cost of replacement for specific components that fail due to a manufacturing defect within a set period. The standard term is often five years, but many manufacturers extend it to 10 years or even a lifetime for major components if you register the product within a specific timeframe after installation. It’s important to distinguish between a parts warranty and a labor warranty. The manufacturer’s warranty almost always covers only the...

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What’s the Difference Between a Furnace Tune-Up and a Furnace Inspection?

October 14, 2026

As a homeowner in O’Fallon, MO, keeping your furnace in top condition is essential for staying comfortable during our cold winters. When you look into professional heating services, you’ll often see “furnace inspection” and “furnace tune-up” used interchangeably. What sets them apart? A furnace inspection primarily checks the system’s condition and verifies its safety. A furnace tune-up, on the other hand, is a more comprehensive service that includes an inspection plus critical cleaning, testing, and adjustments designed to improve performance and efficiency. What a Furnace Inspection Covers Think of a furnace inspection as a diagnostic checkup. The main goal is to identify any existing problems or potential safety hazards. Homeowners often use this service when buying or selling a property, or when they have a specific concern about their heating system’s operation. A technician will visually assess the furnace and its components. During a standard furnace inspection, a technician checks key areas to ensure they function correctly. The inspection includes checking the heat exchanger for cracks, which could lead to carbon monoxide leaks. The technician also checks the burner ignition, flame sensor, and electrical wiring for signs of wear or damage, and inspects the venting system for blockages or corrosion....

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