Your furnace may blow cold air if the filter is clogged, the thermostat is set incorrectly, the pilot light has gone out, or the system has overheated and shut down for safety.

In many cases, a simple filter change or thermostat adjustment fixes the issue. If the cold air continues, it’s a sign the system needs professional diagnostics.

We recommend one professional tune-up per year. During your annual visit, an HVAC Ministries technician will clean, test, and inspect your system to keep it performing efficiently and to catch small issues before they turn into costly repairs.

Regular maintenance not only extends your system’s lifespan but also keeps your energy bills lower throughout the year.

If your furnace is over 15 years old, producing unusual noises, causing rising energy bills, or requiring frequent repairs, replacement may be more cost-effective. Newer systems run more efficiently and provide better comfort.A professional assessment can determine the best option for your home and budget.

Watch for unusual noises, inconsistent heating, burning smells, yellow pilot light flames, or a sudden spike in utility bills. These symptoms often signal blower motor problems, ignition issues, or airflow restrictions. Addressing the problem early prevents a complete system breakdown.

A burning smell usually happens when dust accumulates on the heating elements after long periods of inactivity. This is normal for the first few minutes of operation. However, if the smell is persistent, metallic, or smoky, turn the system off immediately, this could indicate an electrical issue or overheating component.

Most HVAC experts recommend servicing your furnace once a year, ideally before the heating season starts. Annual tune-ups improve efficiency, prevent breakdowns, and extend the lifespan of your system. Many warranties also require regular maintenance to stay valid.

Rattling, banging, grinding, or screeching noises can indicate loose components, ignition delays, blower motor issues, or failing bearings. These noises usually don’t fix themselves and tend to worsen over time. A technician can identify the source and prevent costly repairs.

Yes. Homeowners can try checking the thermostat, replacing the air filter, ensuring the furnace switch is ON, and verifying that air vents are open. If your furnace still doesn’t run properly, professional diagnostics are needed to avoid damaging the system.

Costs vary depending on the issue, but minor repairs may range from $100–$400, while major repairs like blower motors or heat exchangers can cost $500+. Emergency after-hours repairs may cost more. We always provide upfront, transparent pricing before any work begins.

Yes. A malfunctioning furnace can lead to carbon monoxide leaks, overheating, electrical failures, or fire risks. If you notice unusual smells, yellow flames, headache symptoms, or repeated system shut-offs, turn off the furnace and call a professional immediately.

Rising energy bills usually mean your furnace is struggling—possibly due to clogged filters, airflow problems, duct leaks, or worn components. When a furnace overworks, it consumes more fuel and electricity. Servicing the system restores efficiency and lowers utility costs.

Most furnaces last 15–20+ years with proper maintenance. Systems that are never serviced or run constantly during winter may wear out faster. If your furnace is aging and having frequent issues, upgrading may save you money in the long run.