How to Fix Common Furnace Problems in Mesa & Tucson, AZ

When temperatures drop in Arizona, a reliable heating system is essential to keeping your home warm and comfortable. Like any mechanical system, your furnace may encounter issues that require repairs and maintenance. Ignoring these problems can lead to higher energy bills, discomfort, and even safety hazards.

At Western States Home Services, we specialize in heating repair and maintenance for homeowners in Mesa and Tucson. If your furnace isn’t working as it should, try these common troubleshooting tips before calling the experts.

Check Your HVAC Warranty First

Before attempting any DIY fixes, review your furnace’s warranty. Some repairs may require a certified HVAC technician, and performing unauthorized repairs could void your coverage. If your warranty is still active, contact a professional to handle the issue and ensure your warranty remains valid.

Thermostat Issues

If your Tucson furnace isn’t responding, start by checking the thermostat. Ensure it is set to “heat” and the temperature is above the current room temperature. If your system still doesn’t turn on:

• Replace the batteries
• Reset the thermostat
• Check the circuit breaker

If the thermostat is still unresponsive, you may need a professional evaluation to determine if the wiring or sensors need Tucson furnace repair.

Furnace Short Cycling

Does your furnace turn on and off frequently without fully heating your home? This is known as short cycling and is often caused by:

• A dirty air filter restricting airflow
• A malfunctioning thermostat
• An overheating issue due to a faulty limit switch

Replace the air filter first and make sure all vents are open and unobstructed. If short cycling continues, schedule an inspection with Western States Home Services to prevent excessive wear and tear on your system.

Pilot Light Won’t Stay Lit

Gas furnaces rely on a pilot light to ignite the burners. If your pilot light keeps going out or won’t turn on at all, you may have:

• A dirty or faulty thermocouple
• A gas supply issue
• A draft interfering with the pilot light

You can try relighting the pilot light following the manufacturer’s instructions. If it doesn’t stay lit, turn off the gas supply and call a professional immediately. Gas-related issues should never be handled without proper expertise.

Furnace Blowing Cold Air or Inconsistent Heating

If your furnace is running but isn’t producing enough heat, check for these common causes:

• A clogged air filter
• A malfunctioning pilot light or ignition system
• Overheating leading to an automatic safety shutdown

Start by replacing the air filter and making sure your vents are clear. If the problem persists, your furnace may need a more in-depth inspection to address ignition or airflow issues.

Unusual Noises Coming from the Furnace

Your furnace should operate with minimal noise. If you hear banging, grinding, or squealing, it could indicate:

• A loose or broken component
• A failing blower motor
• Ignition timing problems

Do not attempt to tighten or adjust components yourself, as this could worsen the issue. Instead, call a professional to diagnose and fix the problem before it leads to a complete breakdown.

Dirty Flame Sensor

A dirty flame sensor can cause your furnace to shut down unexpectedly. If you’re comfortable doing so, you can clean the flame sensor by turning off the power to the furnace, removing the sensor, and gently wiping it with a fine abrasive pad. However, if you’re unsure, it’s best to leave this task to an experienced HVAC technician.

Schedule Your Furnace Repair with Western States Home Services

If your furnace is acting up and these troubleshooting steps don’t resolve the issue, don’t wait for the problem to get worse. Western States Home Services provides fast, reliable heating repair in Mesa and Tucson. Whether it’s a simple fix or a major repair, our skilled technicians are ready to restore warmth to your home.

Don’t spend another cold night without reliable heat. Call Western States Home Services today to schedule your furnace repair in Tucson or Mesa!

Furnace Problems FAQ