You wake up on a cold Pennsylvania morning and immediately notice that something isn’t right. The house feels colder than usual, the furnace isn’t running, and lowering temperatures are in the forecast.
Is this something that can wait, or do you need emergency HVAC repair?
Not every heating problem is an emergency. Sometimes the solution is as simple as changing a thermostat setting or replacing a dirty air filter. Other situations require immediate attention, especially when there is a risk involving natural gas, carbon monoxide, fire, or dangerously cold temperatures.
Knowing the difference can help you protect your home and family while avoiding unnecessary emergency service calls.
A furnace that stops working doesn’t automatically create an emergency. The situation becomes more urgent when the loss of heat creates a safety risk or could cause damage to your home.
You may need immediate help if:
Some of these situations require more than an emergency HVAC service call. A suspected gas leak, carbon monoxide alarm, or fire should always be treated as a safety emergency first.
Some heating problems can wait for a regular service appointment. Others should be addressed as soon as possible.
Here are six situations that may require immediate attention.
Losing heat on a mild fall afternoon is different from losing heat when outdoor temperatures are below freezing.
Your home may hold heat for some time after the furnace stops working, but the indoor temperature will eventually begin to fall. How quickly that happens depends on outdoor conditions, insulation, air leaks, and other factors.
Cold indoor temperatures can become uncomfortable or unsafe. A prolonged loss of heat can also increase the risk of frozen pipes.
If your furnace completely stops working during very cold weather and basic troubleshooting doesn’t solve the problem, don’t wait for the house to become extremely cold before requesting service.
A suspected gas leak requires immediate action.
Natural gas is treated with an odorant that is often described as smelling like rotten eggs. If you notice this smell in or around your home, don’t try to determine whether your furnace is causing it.
Leave the home and move to a safe location. Avoid operating electrical switches or doing anything else that could create a spark. Once you are safely outside, contact your gas utility or emergency services.
Don’t return to the home until authorities tell you it is safe.
A suspected gas leak is not the time to troubleshoot your furnace or wait for a routine HVAC appointment.
Carbon monoxide is a colorless and odorless gas. Fuel-burning heating equipment can be one potential source when something goes wrong.
If your carbon monoxide alarm sounds, take it seriously.
Get everyone outside into fresh air and contact emergency services. Don’t re-enter the home until emergency responders say it is safe.
If the heating system is suspected as the source, it should be professionally inspected before it is put back into operation.
Never ignore a carbon monoxide alarm or assume that it is simply malfunctioning.
A slight dusty smell can sometimes occur when you turn on your furnace for the first time after it has been sitting unused for several months. Dust that collected during warmer weather may produce a temporary odor as the system heats up.
A persistent burning smell is different.
Electrical odors, the smell of melting plastic, visible smoke, or other strong burning odors can indicate a serious problem. Don’t continue operating heating equipment if you believe something is overheating or burning.
If you see smoke or fire, leave the home and call 911.
A furnace normally turns on and off as it maintains the temperature set on your thermostat. However, repeatedly starting and stopping without properly heating the home can indicate a problem.
You might notice that the furnace starts, runs briefly, and shuts down. It may then attempt to start again a few minutes later.
This behavior is sometimes called short cycling and can have several possible causes. In other situations, the furnace may be shutting itself down because a safety control has detected a problem.
Don’t repeatedly reset the furnace or attempt to bypass a safety switch to keep it running. If the system won’t stay on, an HVAC technician can determine why it is shutting down.
Even if the furnace itself doesn’t appear dangerous, a loss of heat can become an emergency when your home’s temperature continues to fall.
Freezing outdoor temperatures can increase the risk of frozen plumbing and make indoor conditions uncomfortable or unsafe.
The situation may be more urgent if there are infants, older adults, or people who are particularly vulnerable to cold in the home.
There isn’t one indoor temperature that defines an emergency for every household. Pay attention to the conditions inside your home and how quickly the temperature is dropping. Don’t wait until the situation becomes unsafe before seeking help.
Before requesting emergency furnace repair, there are a few simple things you can safely check.
These steps may solve a minor problem without requiring a service call.
Start with the thermostat.
Make sure it is set to “Heat” and that the temperature setting is above the current room temperature.
If your thermostat uses batteries, check whether they need to be replaced. Also make sure someone hasn’t accidentally changed the settings or turned the system off.
Check your home’s electrical panel to see whether the breaker controlling the furnace or HVAC system has tripped.
If you are comfortable doing so, a tripped breaker can generally be reset once. If the breaker immediately trips again, don’t continue resetting it. That could indicate an electrical problem that needs professional attention.
Many furnaces have a nearby power switch that looks similar to a regular light switch.
It can occasionally be turned off by accident, especially if it is located in an area where someone might mistake it for a light switch.
Make sure the switch is in the correct position.
A severely dirty furnace filter can restrict airflow and contribute to heating problems.
Check the filter and replace it if it is dirty and filter replacement is part of your normal home maintenance.
If replacing the filter doesn’t solve the problem, don’t continue taking the furnace apart to look for the cause.
Walk through your home and make sure supply and return vents haven’t been blocked by furniture, rugs, boxes, or other objects.
If these basic checks don’t restore your heat, it is time to have the system professionally diagnosed.
There is a difference between checking your thermostat and attempting to repair a furnace.
Homeowners should avoid repairs involving gas, combustion systems, electrical components, or furnace safety controls unless they have the proper professional training.
Don’t:
Basic troubleshooting can help rule out simple problems. Beyond that point, furnace diagnosis and repair should be left to a qualified HVAC professional.
Not every heating problem requires an emergency service call.
If the furnace is still safely heating your home and there are no signs of gas, carbon monoxide, fire, or an electrical problem, you may be able to schedule a regular service appointment.
Examples could include:
Outdoor conditions matter as well. A heating problem during mild fall weather may be less urgent than the same problem during freezing winter temperatures.
If you aren’t sure whether your heating problem is safe to leave until later, seek professional guidance rather than assuming it can wait.
If you’ve called for emergency heating repair and your home is getting colder, there are several things you can do while you wait.
Keep doors and windows closed as much as possible. Close curtains or blinds to help reduce heat loss through windows. Wear warm layers and consider having everyone stay in the warmer areas of the home.
Keep an eye on the indoor temperature, particularly if young children, older adults, or other vulnerable people are present.
If the house becomes too cold to remain safely or comfortably, consider staying with family or friends or going somewhere warm until your heating system is repaired.
Most importantly, don’t create another safety hazard while trying to stay warm.
Never use a gas oven or stove to heat your home. Outdoor grills, generators, and other fuel-burning equipment should never be operated inside the house, basement, garage, or another enclosed area. These devices can produce dangerous levels of carbon monoxide.
Losing heat during a western Pennsylvania winter can go from inconvenient to urgent quickly.
If your heating system has stopped working, start with simple checks such as the thermostat, circuit breaker, furnace switch, filter, and vents. If those steps don’t restore your heat, it may be time for professional HVAC service.
Safety always comes first. If you smell natural gas, hear a carbon monoxide alarm, see smoke, or believe there may be a fire, leave the home and contact the appropriate emergency service from a safe location.
For heating system failures that require professional HVAC attention, Air Systems Mechanical provides 24-hour emergency HVAC service in New Brighton and surrounding western Pennsylvania communities.
If your furnace stops working when you need it most, contact Air Systems Heating and Cooling for emergency heating repair.
It can be. The urgency depends on outdoor temperatures, conditions inside your home, how quickly the indoor temperature is falling, and whether anyone in the home is particularly vulnerable to cold. Gas odors, carbon monoxide alarms, smoke, or signs of an electrical problem should be treated as immediate safety concerns.
Start by checking your thermostat, circuit breaker, furnace power switch, air filter, and vents. These simple checks can sometimes identify the problem. If the furnace still doesn’t operate, contact an HVAC professional rather than attempting to take the system apart yourself.
Leave the home immediately and move to a safe location. Avoid operating electrical switches or doing anything that could create a spark. Contact your gas utility or emergency services from outside the home and don’t return until authorities say it is safe.
No. If the furnace repeatedly shuts itself down, there may be an underlying problem that requires professional diagnosis. Don’t bypass safety controls or repeatedly force the furnace to restart.
They can. If your home remains without heat during freezing weather, temperatures around plumbing can eventually fall low enough for water inside pipes to freeze. How quickly this happens depends on outdoor temperature, insulation, the location of the pipes, and other conditions. A prolonged loss of heat during freezing weather should be addressed promptly.
