Why Does My Furnace Make Clicking Noise When Turning On?
Dealing with a heater that won’t warm your home can be frustrating and inconvenient, especially during cold weather. Whether you rely on a furnace or a heat pump to keep your home warm, understanding the common causes of heating issues is the first step to restoring comfort.
In this guide by Air Control Services, you will learn actionable steps to fix a heater that won’t heat. If you’re ini Las Cruces, NM, contact our heating pros for proper troubleshooting. Call (575) 567-2608 for a free estimate.
Let’s get started.
How Do You Fix a Furnace That Won't Heat? Troubleshooting Tips
1. Check the Thermostat Settings
Ensure the thermostat is set to “Heat” mode and the temperature is higher than the current room temperature. If the thermostat runs on batteries, replace them to rule out power issues.
2. Inspect the Air Filter
Dirty or clogged air filters can restrict airflow, causing the furnace to overheat and shut down. Replace the filter if it appears dusty or hasn’t been changed in the last few months.
3. Verify the Power Supply of Electric Furnace
If you have an electric furnace, check the circuit breaker panel for a tripped breaker or blown fuse. Reset the breaker or replace the fuse to restore power.
Electric furnaces may also have an internal safety switch or reset button, which is generally located near the blower motor or on the side of the furnace housing. Consult your furnace’s manual for the exact location, and press the reset button if it has tripped.
4. Inspect the Pilot Light or Ignition System of Gas Furnace
For older gas furnaces with pilot lights, ensure the light is on and relight it if necessary. The thermocouple might need adjustment or replacement if the pilot doesn’t stay lit.
For modern gas furnaces with electronic ignition, check for error codes on the furnace display and consult the manual for reset instructions.
5. Clean the Flame Sensor Of Gas Furnace
A dirty flame sensor can cause a gas furnace to shut off as a safety measure. Clean the sensor with a soft cloth or fine sandpaper to remove buildup.
6. Listen for Blower Motor Issues
If the blower motor isn’t running, inspect for obstructions or damage. Electric furnaces may rely solely on the blower to circulate warm air, while gas furnaces use it to distribute heat from combustion. If it’s unresponsive, professional repair or replacement might be required.
7. Ensure You Have Gas Supply
Ensure the gas valve is open and supplying fuel to your gas furnace. If the gas supply appears interrupted, contact your gas provider to confirm the service status.
How Do You Fix a Heat Pump That Won’t Heat? Troubleshooting Tips
1. Check the Thermostat Settings
Ensure your thermostat is set to “Heat” mode and the temperature is set above the current room temperature. If your heat pump has auxiliary or emergency heat settings, verify it functions properly.
2. Inspect the Air Filter
A clogged air filter can hinder airflow, causing the heat pump to struggle to maintain the desired temperature. Replace the filter if it’s dirty to restore proper operation.
3. Verify Power Supply
Confirm that the heat pump is receiving power by checking the circuit breaker or fuse box for any tripped breakers or blown fuses. Reset or replace them as needed to restore power.
4. Inspect the Outdoor Unit
Debris or ice buildup on the outdoor condenser unit can reduce the heat pump’s efficiency. Clear leaves, dirt, or snow from the unit, and clean the coils. If ice buildup persists, the defrost cycle may not work, and professional service may be required.
5. Check the Reversing Valve
The reversing valve controls the heat pump’s ability to switch between heating and cooling. If it’s malfunctioning, the unit may blow cool air instead of warm. This is a technical repair that requires a professional HVAC technician.
6. Test Refrigerant Levels
Low refrigerant can prevent the heat pump from transferring heat effectively. A licensed technician can test and recharge refrigerant levels if needed, as handling refrigerant requires specialized equipment and certification.
7. Inspect the Blower Motor
Warm air won’t circulate effectively if the blower motor isn’t running. Check for obstructions or electrical issues. Repairs or replacements may be necessary if the motor is damaged.
8. Ensure Proper Operation in Cold Weather
Heat pumps may struggle in freezing temperatures. If this happens, auxiliary heat should activate. If it doesn’t, check the system settings or consult a technician to address the issue.
When to Call a Professional To Fix A Heater That Won’t Heat?
Some heating issues require expertise beyond basic troubleshooting. Call a professional HVAC technician if:
- You notice persistent problems: Issues like frequent shutdowns, strange noises, or inconsistent heating might indicate underlying mechanical or electrical failures.
- DIY fixes don’t work: If your attempts to clean filters, reset breakers, or inspect components don’t resolve the problem, a deeper diagnostic is necessary.
- There’s a gas or electrical concern: For safety reasons, gas supply interruptions, electrical faults, or complex component failures like blower motors and reversing valves should always be handled by a licensed technician.
Schedule Your Heating Repair with Air Control Services
A heater that won’t heat disrupts your home’s comfort and safety. When DIY fixes fall short, trust Air Control Services in Las Cruces, NM, for professional heater inspections and repairs. From intricate furnace repairs to precise heat pump troubleshooting, our experienced technicians provide tailored solutions to restore warmth and efficiency.
Call (575) 567-2608 to schedule heater service for your furnace and heat pump. We’re available 24/7 to bring your heating system back to optimal performance.