No Heat Emergency
Waking up to a cold house in January is alarming, especially with Nashville temperatures below freezing. Some no-heat situations have simple causes you can resolve yourself. Here is what to check immediately and when to call for emergency heating repair.
Call (615) 420-7082 — 24/7 EmergencyImmediate Steps When Your Heat Fails
Check your thermostat immediately. Verify it is set to heat mode with the temperature set above the current room temperature. Replace batteries if the display is blank. Check your electrical breakers. Your furnace has its own breaker, and heat pumps may have separate breakers for indoor and outdoor units. Reset a tripped breaker once, but if it trips again, leave it off and call for service. Inspect your air filter. A completely clogged filter can cause the furnace to overheat and shut down on the high-limit safety switch. Check the gas supply if you have a gas furnace. Verify the gas valve on the supply line is open and that other gas appliances work. For heat pump systems, check whether the outdoor unit is running and look for excessive ice buildup. If your furnace has a diagnostic LED, note the flashing pattern to share with your technician.
Common Causes of Heating Failure
Ignition failure is the number one cause of gas furnace no-heat calls. Hot surface igniters glow red-hot to ignite the burners and typically last three to seven years before cracking. Flame sensor problems cause the furnace to light briefly then shut off within seconds due to carbon buildup on the sensor. Thermostat malfunctions account for a surprising percentage of no-heat calls. Blower motor failure prevents heated air from reaching your living spaces. Heat pump defrost failures cause the outdoor unit to ice over in Nashville winter conditions. Gas valve failures prevent gas flow to the burners entirely. Pressure switch and inducer motor problems prevent the ignition sequence from proceeding. Limit switch trips occur when the furnace overheats due to restricted airflow.
Protecting Your Home and Family
When heating fails during cold weather, close doors to unused rooms to concentrate available heat in occupied areas. Use blankets and layers rather than unvented combustion heaters. Never use a gas range, oven, or outdoor grill for indoor heating as these produce deadly carbon monoxide. Protect your plumbing from freezing. If indoor temperatures drop below 55 degrees, open faucets to a slow drip and open cabinet doors under sinks on exterior walls. For heat pump systems with emergency heat, switching the thermostat to emergency heat mode activates backup electric resistance heat strips. This provides heating at higher cost but can maintain comfort while you wait for repair. Our emergency technicians carry the most frequently needed parts including igniters, flame sensors, capacitors, thermostats, and control boards to complete most repairs in a single visit.
Frequently Asked Questions
What should I do if my furnace is not producing heat?
Check the thermostat settings and batteries, inspect the air filter, verify the gas supply valve is open, and check the electrical breaker. If these are all fine, call for professional service. Do not repeatedly attempt to restart a furnace that keeps shutting down.
Is a no-heat situation an emergency?
When outdoor temperatures are below freezing, a no-heat situation is an emergency for both family safety and to prevent pipe freezing. Call our 24/7 emergency line for immediate dispatch.
How can I prevent no-heat emergencies?
Annual heating maintenance is the best prevention. Have your system professionally inspected each fall before cold weather arrives. Replace filters regularly and address unusual noises or performance changes promptly.
Need Emergency Help Now?
Our 24/7 emergency dispatch team is standing by. Call for immediate service.