When a furnace repeatedly requires resetting, it is usually triggering a built-in safety mechanism to prevent damage or fire. The most common culprits are restricted airflow (like a dirty filter), a dirty flame sensor, or a clogged condensate drain (in high-efficiency units).
If a furnace isn't receiving enough airflow, it may overheat and trigger the reset button to trip. Make sure to clean or replace the air filters and keep the air vents open enough for proper airflow. Occasionally, the flame sensor rod may be coated with dirt and debris, causing the furnace to shut off.
Determining whether your thermostat or your furnace is acting up usually comes down to checking the power, the system's display, and how the unit responds to your inputs. Use these quick, actionable tests to pinpoint exactly where the fault lies.
The $5,000 rule is a guideline to help homeowners decide whether to repair or replace their HVAC system. You multiply the age of your unit by the cost of the needed repair. If that number exceeds $5,000, replacing your HVAC system is often more cost-effective.
A healthy furnace typically cycles on and off 3 to 8 times per hour, with each cycle lasting about 10 to 15 minutes. The exact frequency fluctuates based on the outdoor temperature, your home's insulation, and the specific temperature set on your thermostat.
5 Warning Signs It's Time for Furnace Replacement
It takes time for your home to warm up and cool down. If you're not sure how long it takes, try turning the heating on about 30 minutes before you need it. You should turn it off 30 minutes before you'll stop needing it.
A standard furnace lasts between 15 and 20 years on average, though electric furnaces can stretch up to 20 to 30 years. Regular maintenance, such as annual tune-ups and changing your filters every 1 to 3 months, is the most important factor in reaching or exceeding this lifespan.
The heat exchanger is often considered the most costly part of a furnace to repair or replace. It is a critical component that transfers heat from the combustion process to the air that circulates throughout your home. Over time, heat exchangers can crack due to the constant heating and cooling cycles they undergo.
However, with the passage of the new budget, homeowners now have until the end of 2025 to take advantage of the HVAC tax credits, which include: $2,000 for a qualified heat pump. $600 for a qualified air conditioner. $600 for a qualified gas furnace.
How can you tell if a thermostat is bad?
Your thermostat is the command center of your home's comfort. Most thermostats last between 10 to 15 years, but factors like installation quality, environmental conditions, and maintenance habits all play a role in how long yours will hold up.
A frozen pipes furnace failure can cause major problems inside your home. Ice builds up fast in unheated spaces, and when frozen water expands, it can burst pipes wide open. That kind of mess is the last thing anyone wants during a winter heating outage.
If it doesn't start at all, you can press the button one more time. But, if you press the reset button and your furnace goes on and turns off again, don't press the button again. Continuing to press the reset button can damage your system. Doing so will pump more oil into the furnace and worsen any existing issues.
To fix a furnace that is short cycling (turning on and off rapidly without completing a full heating cycle), first replace your clogged air filter, check that all room registers are open, and ensure the outdoor exhaust vent is clear of debris.
Is yearly furnace maintenance necessary? It's recommended, as annual furnace maintenance can spot potentially dangerous issues early on. For example, a gas furnace inspection could reveal a cracked heat exchanger.
What fails first on a furnace? The most common early failures are the furnace ignitor or flame sensor, as they experience regular wear and tear and are critical to starting the heating cycle.
Try the Salvation Army, a local church, or a community action agency. Their rules may be different. Ask About Payment Plans: Many local HVAC contractors, including Smart Climate Solutions, offer payment plans for urgent repairs because we believe everyone deserves a warm home.
The life expectancy of an HVAC system typically ranges from 15 to 25 years, depending on factors like usage, maintenance, and system type. Regular maintenance, such as cleaning filters, checking refrigerant levels, and ensuring proper ventilation, can extend the system's longevity.
You should probably Replace if: [ ] The repair costs more than 50% of a new unit. [ ] The furnace is over 15 years old. [ ] You have had to repair it more than once in the last 2 years.
Homeowners insurance may cover furnace damage from sudden and accidental perils, such as fire, storm damage, burst pipes, or electrical surges. Damage from normal wear and tear, poor installation, aging, or lack of maintenance is not covered by standard policies.
The best time to buy a furnace is during the off-season, specifically late spring (April-May) or early autumn (September-October), when HVAC companies are less busy and offer lower prices, rebates, or promotions. Purchasing in these shoulder seasons ensures faster installation times and better negotiating power compared to winter peak season.
Heating and energy expert Stephen Hankinson said that one "big energy cost saver" is to make sure you have your heating off when you're not at home. For instance, if you typically arrive home from work at around 6pm on weekdays, you could set your heating to activate just as you walk through the door.
In most homes, Heating and Cooling (HVAC) systems drive the highest energy costs, accounting for nearly 40% to 50% of your total electricity bill. Following these, the appliances that run up your bill the most include water heaters, refrigerators, and laundry machines.