How do I know if my thermocouple is broken?

If you can’t get the flame to light at all, and you’re sure the gas is on, there’s probably an obstruction in the pilot tube. If the flame lights and goes out when you release the gas control knob after holding it in for the recommended 20 to 30 seconds, that’s the sign of a thermocouple malfunction.

How much does it cost to replace a thermocouple on a furnace?





$150 to $250

Replacing a thermocouple costs $150 to $250, mostly due to labor time. On older models without an ignitor, it checks to make sure your pilot light is lit. If it’s not, it’ll shut the gas off.

When I release the pilot button the flame goes out?

If you’re able to light the pilot light, but it goes out when you release the control knob, the thermocouple probably needs replacing. The thermocouple is a safety device that shuts off gas flow if it senses the pilot light is out, but when damaged it loses its regulatory ability.

How do you clean a thermocouple on a furnace?

Quote from the video:
Quote from Youtube video: Use a soft abrasive pad or emery cloth to gently clean the outside of the thermocouple. Be careful not to scratch the coating. Next insert the thermocouple into the pilot assembly.

Why does the pilot keep going out on my furnace?





A faulty, misaligned, dirty, or damaged thermocouple is often the culprit behind your pilot light going out. The thermocouple is an automatic safety shutoff device that prevents the gas valve from opening if the pilot light is out.

How much is a new furnace for a 2000 square foot home?

The average cost range for purchasing and installing a gas furnace designed to heat a 2,000-square-foot home with a 97% efficiency rating ranges from $4,000 to $8,000, with most homeowners spending around $6,000 total on a high-efficiency gas furnace replacement in a 2,000 sq. ft.

How much is a new furnace for a 1500 square foot house?

between $2,990 and $4,360

The average cost to replace a gas furnace in a 1500-square-foot house is between $2,990 and $4,360. For a standard-efficiency gas furnace, a 60,000-80,000 BTU model is the best choice.

What is the most reliable furnace brand?



The Best Furnace Brands of 2022

  • Lennox. Known for: Lennox furnaces offer a wide range of options, including noise-reducing features with variable blower motors. …
  • Trane. …
  • Goodman. …
  • American Standard. …
  • Amana. …
  • Bryant. …
  • Carrier. …
  • Rheem.

What size furnace do I need for a 1500 sq ft house?

between 45,000 to 90,000 BTUs

A 1,500-square-foot home will require between 45,000 to 90,000 BTUs. A 1,800-square-foot home will require between 55,000 to 110,000 BTUs. A 2,100-square-foot home will require between 65,000 to 125,000 BTUs. A 2,400-square-foot home will require between 75,000 to 145,000 BTUs.

Is it better to undersize or oversize a furnace?



It’s better to be a little undersized than oversized, You’ll get a little longer run time, but it’s better than shortcycling.

How long does a gas furnace usually last?

15 to 20 years

A well-maintained furnace can last at least 15 to 20 years, but completing annual maintenance and being diligent with repairs can extend its life even longer.

Can a furnace be too big for a house?

A furnace that’s too big for your home can cause temperature inconsistencies. Even large furnaces may struggle with keeping the desired temperature in your home. You will notice that some rooms aren’t as warmer as the other rooms.

What size furnace do I need for a 2000 square foot home?



Rough Estimates



A mid-sized home of 2,000 square feet would need approximately 50,000 to 60,000 Btu to heat it properly. With a less efficient furnace operating at 80 percent efficiency this would require a 60,000- to 72,000-Btu furnace.

What size furnace do I need for a 1600 square foot home?

Chart For Furnace Tonnages And BTUs For 500 – 3,000 Sq Ft Houses

House Size (Sq Ft): Furnace Size (in BTUs):
1400 sq ft home 63,000 BTU furnace
1500 sq ft home 67,500 BTU furnace
1600 sq ft home 72,000 BTU furnace
1700 sq ft home 76,500 BTU furnace