One of the most probable reasons you’ve got a shut-off furnace is that a technician found a crack in the heat exchanger. This component is responsible for transferring heat from the burner to the air circulating around your home. A breach in the heat exchanger is incredibly hazardous because it can allow carbon monoxide gas to escape and mix with the air in your home. If you’ve got a shut-off furnace because of a cracked heat exchanger, here are your options.
First, you can replace the heat exchanger. You should consider this option if:
- The heat exchanger is under full warranty. Otherwise, you could end up spending thousands of dollars on a replacement part.
- Repair costs are under 25 percent of the cost for a new furnace. Even with a full warranty, you are still responsible to pay labor costs. Get repair quotes for your shut-off furnace and compare them to the cost of a new furnace to help you make your decision.
- Your furnace is still fairly new. It’s unlikely for a furnace that is less than 10 years old to develop a crack in the heat exchanger, but your furnace may be an exception.
Second, you can replace the shut-off furnace with a new one. This is the best option if:
- The furnace is getting old. Even with a new heat exchanger, you will be stuck with the same aging furnace you had before if you choose to only replace the breached component.
- The furnace has a poor efficiency rating. Now could be the perfect excuse to replace an inefficient unit with a new, Energy Star rated one.
- The damage is beyond repair. Sometimes, the heat exchanger simply can’t be replaced. If you get two opinions that agree on this matter, it’s best to replace the shut-off furnace with a new one.
For more help deciding what to do about your shut-off furnace, please contact Rite-Way Ventilating Co. for another opinion. We have proudly served residents of Tucson since 1959.
Our goal is to help educate our customers about energy and home comfort issues (specific to HVAC systems). For more information about furnaces and other HVAC topics, download our free Home Comfort Resource guide.