When we’re consulting with clients on new HVAC installation, one thing we are always asked is, “How long will my HVAC unit last?” It’s an important question when considering this sort of investment. The majority of industry companies and organizations agree that most heating and cooling systems will last between 12 to 25 years. But there are always exceptions to the average.
Variables that affect how long your HVAC system will last
HVAC systems can last longer or shorter based on a number of different factors or variables, including:- Manufacturer brand
- Run-time hours per day
- How well maintained the system is over each year
- Whether any major repairs or retrofits have been made
- Which type of heating or cooling system you’re using (for example, furnaces usually last longer than outdoor AC units)
- Environmental factors, such as salt air, volatile organic compounds (VOCs), sulfur, chemicals, and corrosive contaminants play a role in a system’s life expectancy
What are the life expectancies of different HVAC systems?
As mentioned above, depending on which heating and cooling system you install, you can expect a different relative lifespan. Let’s take a look at what the average life expectancies are for each type of system.- Furnaces: 12- 20 years
- Outdoor air conditioning units: 12-20 years
- Heat pump/cooling system: 12-20 years
- Boilers (electric): 15 years
- Boilers (steel water-tube/fire tube): 15-20 years
- Boilers (cast iron): 30-35 years
- Ventilation/ductwork: Nearly lifetime
- Thermostats: 12-20 years
- Humidifiers/dehumidifiers: 8-10 years