How Long Different Types of HVAC Units Last
In general, an HVAC system can be expected to last between 10 and 20 years, depending on the environment, maintenance, and technology. While the precise lifespan of an HVAC will vary, each component does have a generally agreed-upon estimate.
Air conditioning units typically last between 10 and 15 years, but their lifespans can vary dramatically. Units in warm, coastal climates will have significantly shorter lifespans than those in cool, dry climates.
Gas furnaces can last for over 20 to 30 years and are usually only replaced when the heat exchanger begins to leak. Oil furnaces, on the other hand, generally last 10 to 15 years, with maintenance issues often arising from its less-efficient fuel source.
Since they have to run constantly, heat pumps have a shorter lifespan than furnaces, typically lasting 10 to 20 years.
Ductless mini-splits generally last for 20 years, though, as with air conditioning units, coastal regions and warm climates may see a significant reduction in lifespan.
Thermostats can last for up to 25 years. But the increasing popularity of high-tech smart thermostats suggests that a thermostat is more likely to be replaced due to being outdated, rather than breaking down.
A tankless water heater can last up to 20 years, depending on the water quality in the area. Electric or gas water heaters, by comparison, generally last half as long as tankless water heaters.