What it is
A heating outage means your furnace, heat pump, boiler or other system isn't warming your home the way it should. It may stop completely, blow cool air, run only briefly, or fail to start at all.
The cause can be simple, like a thermostat setting or a clogged filter, or more involved, like a worn part, an ignition problem, an airflow blockage or an electrical issue. From the living room, these can look the same.
Safety comes first. If you smell gas or a carbon monoxide alarm sounds, leave the home immediately and call your gas utility's emergency line or 911 from outside. Do not try to find the cause yourself.
How it’s traditionally been approached
Homeowners have usually started with the basics: confirming the thermostat is set to heat and set above the room temperature, checking that fresh batteries are in the thermostat if it uses them, and looking at whether the furnace switch is on.
Next, people often check whether the air filter is badly clogged and whether a breaker has already tripped. Vents and registers are also worth a glance to make sure nothing is blocking them. For outdoor heat pump units, clearing leaves or debris from around the unit is a common safe check.
If those checks don't help, the traditional next step is calling a licensed heating professional. Gas lines, burners, pilot assemblies, refrigerant, capacitors, wiring and electrical panels are work for qualified pros, not DIY projects.
How the right HVAC pro may help
The right HVAC pro may help by finding out why the system stopped, explaining what they see in plain language, and talking through repair or replacement options. A visit generally includes a conversation about what happened, an inspection of the system, and an explanation of next steps.
It can help to ask about their license and insurance, whether they offer emergency or after-hours service, and how they handle diagnostic fees. Ask for a written quote before work begins, and ask what the quote includes and what might change it.
You can also ask what caused the problem, whether anything else looks worn, and what you can do to help prevent a repeat. Licensing and permit rules vary by state, county and city, so check a contractor's credentials with your state or local licensing board.
The bigger picture
Losing heat can feel stressful, especially when it's cold, or when children, older family members or pets are at home. Taking a few calm, safe steps can help you feel more in control while you wait for help.
Unexpected repairs can also affect your budget and peace of mind. Gathering written quotes and asking questions can help you make a decision you feel good about. If the stress is weighing on you, Providers.plus may help you find wellbeing resources.
Keep in mind
- Never try to fix gas lines, burners, pilot assemblies, refrigerant, capacitors or wiring yourself; leave that to qualified professionals.
- If you smell gas or a carbon monoxide alarm sounds, leave the home right away and call the gas utility or 911 from outside.
- Costs vary with the cause, the parts, the time of day and your location, so get written quotes before approving work.
- Never use a gas oven, grill or other fuel-burning appliance not designed for heating your home to warm it, as this can create serious safety hazards.
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Frequently asked questions
What should I do first when my heat goes out?
Start with safe checks: make sure the thermostat is set to heat and above the room temperature, check its batteries, and confirm the furnace switch is on. Then look at the air filter and see whether a breaker has already tripped. If none of that helps, contact a licensed heating professional.
What should I do if I smell gas when my heat goes out?
Leave the home immediately and call your gas utility's emergency line or 911 from outside. Do not turn lights or appliances on or off, and do not try to find the source. Wait for trained responders to tell you it's safe to return.
Is it safe to use a space heater when the heat goes out?
Some people use space heaters designed for home use as a temporary option. Follow the manufacturer's instructions, keep them away from anything flammable, never leave them unattended, and plug them in as directed. Never use a gas oven or outdoor grill for heat indoors, because of fire and carbon monoxide risks.
Why is my furnace running but not heating?
There can be several reasons, such as a clogged filter, a thermostat setting, blocked vents or an issue inside the equipment. You can safely check the thermostat, filter and vents. If the problem continues, a qualified HVAC pro can inspect the system.
When should I call for emergency heating repair?
Consider calling when the checks don't restore heat and the home is getting uncomfortably cold, especially with young children, older adults or anyone with health concerns at home. Ask whether the company offers emergency service and what that may involve. Get a written quote when possible.
How do I find a trustworthy heating repair pro?
Look for a contractor who is licensed and insured, and verify this with your state or local licensing board. Ask for written quotes, read recent reviews, and ask questions about the work. HVAC Marketing 360 is an independent directory and does not guarantee any provider's work.
Educational resource. HVAC Marketing 360 shares general information and connects people with independent home service pros. It is not professional advice. Talk with a qualified professional about your own situation.