THE 10 MOST COMMON HEATER PROBLEMS AND SOLUTIONS

September 20, 2023

When the temperatures drop during the winter, the last thing you want is a heater that won't keep up. A chilly home isn't just uncomfortable—it can cost you extra money or cause unnecessary stress.

At Columbus Worthington Air, we're here to help with information about heating system types, common heater problems, solutions, and when to call a professional for heating repairs.

Understanding the Types of Heating Systems

Different heating systems come with unique issues. Here are the four main types of furnaces and some of their common heating problems:

• Gas furnaces are the most common. They use natural gas for efficient and cost-effective heating and are ideal for areas with gas lines.

Common problems: gas leaks, pilot light failures, and clogged burners.

• Electric furnaces heat homes using electricity instead of gas or oil, making them cleaner, safer, and low maintenance.

Common problems: faulty heating elements.

• Oil furnaces are less common but provide effective heating in colder regions without natural gas access.

Common problems: soot buildup, clogged filters, and fuel storage challenges.

• Dual-fuel (hybrid) systems combine a heat pump with a gas furnace, switching between them based on temperature for better efficiency.

Common problems: heat pump malfunctions, sensor failures, or switching delays.

10 Common Heater Problems

Explore these common heating problems to determine whether one might be causing trouble in your home.

Problem #1: Dirty or Clogged Filters

How to identify the problem: If you're experiencing a spike in your utility bills, weak airflow, or increased dust in the home, a dirty air filter might be the culprit.

How to fix: This common heating problem has an easy DIY fix. Check and replace your filter every one to three months, depending on usage and filter type.

Cost: $10 to $30 (DIY)

Problem #2: Thermostat Malfunctions

How to identify the problem: If your furnace or heating system isn't turning on or functioning efficiently, check your thermostat. It could be faulty or have incorrect settings.

How to fix: First, try replacing the batteries if applicable. Check the thermostat is set to heating mode and at your desired temperature. Older thermostats may need to be replaced with a more user-friendly digital model for temperature customization.

Cost: $50 to $300

Problem #3: Ignition or Pilot Light Issues

How to identify the problem: When your heat isn't working, and you have a gas or oil furnace, check the pilot light first. If it won't stay lit, you may have an ignition issue.

How to fix: If the light is out, you can follow the manufacturer's instructions to relight it, but we recommend a professional for pilot light and ignition issues. If you're in Columbus, Ohio, contact Columbus Worthington Air at 614-405-7819 to address this issue.

Cost: $150 to $500

Problem #4: Cracked Heat Exchanger

How to identify the problem: A strong chemical odor coming from your gas or oil furnace, carbon monoxide detector alerts, or visible cracks in the heat exchanger may indicate a cracked heat exchanger. This issue can create a dangerous situation in the home and requires immediate attention.

How to Fix: This fix is a job for a professional. A technician will inspect the heat exchanger and replace it if necessary. Replacing the entire furnace may be the safest option.

Cost: $1,000 to $2,000

Problem #5: Worn or Frayed Blower Belt

How to identify the problem: A squealing or high-pitched noise may indicate a worn blower belt. Another sign is reduced airflow from your vents.

How to fix: Turn off the furnace, check the belt, and replace it if it's frayed or loose. Follow the manufacturer's instructions or call a professional if you're not sure.

Cost: $10 to $30 (DIY), $100 to $250 (professional)

Problem #6: Frequent Cycling

How to identify the problem: If your furnace cycles on and off too frequently, it may be short-cycling due to overheating, a clogged filter, improper sizing, or incorrect thermostat settings.

How to fix: Start with the easiest fix—replace the air filter. If the issue persists, make sure the thermostat isn't in direct sunlight or close to the vents. If short-cycling persists, a professional can inspect for overheating or wiring issues or determine whether it's improperly sized for the home.

Cost: $150 to $400 (overheating or wiring), $2,000+ (replacing the furnace)

Problem #7: Limit Switch Malfunction

How to identify the problem: If your furnace runs continuously without shutting off, it may be due to a faulty limit switch. This issue can lead to overheating and rising energy bills.

How to fix: A professional should handle limit switch repairs, which involve testing the switch and replacing it if necessary. Regular maintenance provided through Columbus Worthington Air's Pro Service Plan can prevent this issue.

Cost: $150 to $350

Problem #8: Worn-Out Ball Bearings

How to identify the problem: A loud grinding noise from your furnace could indicate worn-out ball bearings in the blower motor. This problem can cause motor failure.

How to fix: The first step is to turn off the furnace to prevent further damage. A professional should inspect and replace the ball bearings as needed.

Cost: $100 to $300

Problem #9: Dirty Ductwork

How to identify the problem: If you notice poor air quality, more dust than usual, or uneven heating throughout your home, your ductwork may be dirty and clogged with debris.

How to fix: Cleaning ducts is a professional job. HVAC specialists use high-powered vacuums to remove debris and improve airflow.

Cost: $100 to $500

Problem #10: Gas Leaks or Odors

How to identify the problem: If you smell gas or a rotten egg odor, there could be a leak in your gas furnace. Other signs include hissing sounds near gas lines or symptoms like dizziness or nausea.

How to fix: A gas leak is an emergency that requires immediate action. Turn off the gas supply, leave your home, and call your gas company. A professional from Columbus Worthington Air can then locate and repair the leak.

Cost: $500 to $2,000 (based on severity)

Expert Tips to Extend the Life of a Heating System

Addressing common heater problems early prevents costly breakdowns and helps maintain your system's performance. Here are some expert tips to help prevent furnace problems and keep you warm all winter long:

• Replace your furnace filters regularly. Dirty air filters are the most common problem causing system damage and costly repair bills.
• Lower the thermostat by 2 to 3 degrees when away to save up to 5% on your energy bills.
• Flip the fan switch on your thermostat to "fan on" mode to keep air circulating and prevent hot or cold spots.
• Set second-floor air vents to receive about 45% of heated air to balance temperatures between the first and second floors since hot air rises.
• Open the shades and curtains to take advantage of the natural heat of the sun. Keep doors and windows closed to reduce heat loss.
• Replace old windows with more efficient low-E glass to reduce heat loss. Also, keep storm windows closed to save money and extend the life of your HVAC system.
• Run a humidifier to help your home feel up to 3 degrees warmer, then turn down your thermostat a couple of degrees to save energy. You may still need a dehumidifier in the basement.
• Clear or cut back shrubs and bushes from the outdoor heat pump unit, and keep fallen leaves, grass clippings, foliage, and debris away. The sides of the unit require at least 12 to 18 inches of clearance for proper performance.
• Keep the indoor coils of your heat pump clean, following manufacturers' instructions.
• To ensure proper airflow, don't block vents or ducts inside the house.
• Caulk and install weather stripping around windows and doors (especially the attic) to close air gaps.

Contact the Trusted Professionals at Columbus Worthington Air

Common heating problems don't have to affect your comfort this winter. If you need the help of an HVAC expert in the Columbus area, request an appointment at any time. For emergency or same-day service, please call 614-405-7819.