When to Replace Your Furnace

Knowing when it’s the right time to replace your furnace isn’t always straightforward. There usually aren’t a lot of external signs to look for. But here are some things that may help you decide if it’s the right time to replace your furnace:


A 20 year old furnace is on the far end of its average life expectancy. And, this may be the perfect time to invest in a new heating system, especially if you have to constantly pay for costly repairs. The age of a furnace is one of the major reasons homeowners purchase a new one. Please note that a poor furnace may break down before the end of its expected life. It’s always best to get your furnace cleaned and inspected each year to make sure everything is running properly.

Efficiency and Savings

The more efficient your furnace, the more heat you get for every dollar you spend. Older furnaces tend to have a lower efficiency than newer furnaces. The less efficient your furnace, the higher your heating bills are likely to be.

On average, our heating technicians see efficiencies in the 60% range, with 67% being the most common efficiency rating they see. Fortunately for homeowners, modern furnaces have become far more efficient with the help of new technology. Newer heating oil furnaces see efficiencies above 80%. Propane furnaces can see the efficiency rating go up to about 94%. Replacing a poorly-performing furnace can translate into hundreds of dollars of savings every year on heating oil or propane, depending on how much you use.


Your current furnace may be too big for what you need in your home, especially if you recently made your home more energy efficient. A properly sized furnace should be running at peak efficiency during the winter. An oversized furnace will never come up to peak efficiency, potentially costing you more money.


If you’re constantly making costly repairs to your furnace, it may make sense to replace your system rather than suffer through another costly heating season. And you certainly don’t want to have to worry about your furnace breaking down in the middle of winter.

Additionally, if your furnace hasn’t been properly maintained, wear and tear can reduce the efficiency of the system. This will lead to higher costs in heating oil or propane.


Be sure to check out our blog on what to look for in a new furnace. If you have any question about when to replace your heating equipment, then be sure to contact an Irving heating expert online, or call us at 1.888.310.1924 – we’re here to help.