Common Furnace Problems in Loganville, GA — and What You'll Pay to Fix Them
When the temperature drops in Loganville, GA, the last thing you want is a furnace that stops working. Whether your heater is blowing cold air, making strange noises, or simply refusing to turn on, understanding common furnace repair issues can help you act fast — and budget wisely.
At Henson Heating Air and Plumbing, we handle furnace repair in Loganville, GA every season. Here's a breakdown of the most common problems we see and what they typically cost to fix.
1. Dirty or Clogged Air Filter
A clogged filter is one of the most common — and easily preventable — causes of furnace problems. When airflow is restricted, your furnace overheats and shuts down as a safety measure. Replacing or cleaning the filter is usually free if you do it yourself, but if a technician discovers it's caused secondary damage, repairs can run $75–$200.
Fix it yourself: Replace standard 1-inch filters every 1–3 months. If you're unsure what size to buy, check the side of your existing filter.
2. Ignitor Failure
If your furnace is turning on but not producing heat, the ignitor may have failed. Modern gas furnaces use an electronic ignitor rather than a standing pilot light, and these components wear out over time. Ignitor replacement typically costs between $150 and $300, including parts and labor.
3. Cracked Heat Exchanger
A cracked heat exchanger is one of the most serious furnace problems — and one of the most expensive. It allows carbon monoxide to leak into your home's air supply, creating a safety hazard. Repair costs can range from $500 to $1,500 or more depending on severity, and in many cases, replacing the furnace is more cost-effective than repairing a cracked exchanger.
If you notice strange smells, headaches, or carbon monoxide detector alerts, call for heating repair in Loganville, GA immediately.
4. Blower Motor Issues
The blower motor circulates warm air throughout your home. If you notice uneven heating or the fan running constantly, the blower motor may be failing. Blower motor replacement typically runs between $400 and $700, depending on the unit and labor costs in your area.
5. Thermostat Malfunctions
Sometimes the furnace isn't the problem at all — the thermostat is. A faulty thermostat can cause your system to short-cycle, run continuously, or fail to heat your home to the set temperature. Thermostat replacement costs between $100 and $300 for standard units, or $200–$500 for smart thermostat upgrades.
6. Dirty Burners or Flame Sensor Issues
If your furnace lights briefly and then shuts off, the flame sensor may be dirty or faulty. This safety device tells the system whether a flame is present. Cleaning or replacing the flame sensor typically costs between $80 and $150 — a relatively quick repair that most HVAC technicians can handle in under an hour.
When to Call a Professional for Heater Repair in Loganville, GA
While filter replacements are DIY-friendly, most furnace repairs require a licensed HVAC technician. You should call a professional if:
- Your furnace is producing little or no heat
- You smell gas or burning odors
- Your carbon monoxide detector goes off
- The furnace makes loud banging, rattling, or squealing sounds
- Your energy bills have spiked without explanation
How Much Does Furnace Repair Cost in Loganville, GA?
On average, homeowners in Loganville pay between $150 and $600 for furnace repair. Minor repairs like ignitor replacement or flame sensor cleaning are on the lower end, while major repairs like heat exchanger replacement or blower motor work tend to cost more. Emergency heating repair in Loganville, GA may include after-hours fees.
Schedule Furnace Repair in Loganville, GA Today
Don't wait until your furnace fails completely. If you're experiencing any of the issues above, contact Henson Heating Air and Plumbing for fast, reliable furnace repair in Loganville, GA. Our licensed technicians service all makes and models, provide upfront pricing, and are available when you need us most.
Call us today or visit our Loganville service page to schedule a furnace inspection or heating repair appointment.
