There can be a couple of reasons your furnace stops working. First, we’d recommend checking the air filter. Is it clean or dirty? Is it time for a replacement? Next, you’ll want to head to your circuit breaker box and see that none of the switches flipped. Then, check the thermostat. Is the battery working right? Is the setting in the on position and set to heat?

Step 1. First thing, we’d recommend you do is check the thermostat. Did you check to make sure it’s set to the on and heat setting?

Step 2. Next, go to your furnace and make sure the switch is at the “on” position.

Step 3. Another quick check here. The furnace circuit breaker could be an issue. Did the switch get tripped?

Step 4. Next, head to your furnace’s filter. Is it clogged? It’s time to get a new one in.

Step 5. What about the furnace’s front panel? Did it loosen? Go make sure that it’s securely closed.

Step 6. Now, head to the gas valve. Is it set to the “on” position?

Step 7. What about the air ducts? Could they be blocked? It’s time to double-check.

Step 8. If it’s still not working, we’d recommend that you call a professional.

This depends on the type of unit, but about 15-25. Let’s look closer. The average lifespan of a natural gas furnace is 15-20 years with proper maintenance. Whereas, an oil furnace should see about 15-25 years with routine maintenance. A regularly maintained furnace lasts longer than one uncared for.

The age of your system is first place to look at. You also need to think about the cost of repairs and frequency of repairs over time. Using the $5000 rule, we multiply the age by the cost of repair per year and if that is less than $5000, we suggest you repair it. For example, if your furnace is 12 years old, and the repair will cost $500, multiply 12X500=6000, which is greater than 5000. When it ends up getting to that expense, we suggest you replace the furnace.

Generally, it ranges from $100 to $1200. The average bill is about $300. In most cases, homeowners spend between $170 to $500. What you’ll want to factor is in labor and parts, if it’s under warranty, and the type of furnace you have.

When it comes to your furnace, we suggest you service is at least once a year, usually in the fall. Furnace manufacturers recommend annual inspections and maintenance, and it’s important to mention that many of them require proof of prior maintenance if you put in a warranty claim. Also, a well-maintained unit will save you money on utility bills and extend the life of your furnace.