How many years does HVAC last?

The number of years an HVAC system lasts depend on the type and brand of components that make up your system. The lifespan of an air conditioner averages between 15 and 20 years. The life expectancy of a tankless water heater is approximately 20 years, while a storage water heater is closer to 10-15 years. Ducts may need replacing within 10-15 years. Your equipment will have a longer life if you have regular tuneups and maintenance to keep everything in good working order. If you’re having repair problems and your HVAC system is over 10 years old, it’s a good time to consider the costs and benefits of repairing vs. replacing. Energystar.gov provides the following tips to help you decide whether to repair or replace:

• Your HVAC system needs frequent repairs and your energy bills are increasing.
• Your cooling or heating equipment is less efficient.
• Rooms in your home are too hot or too cold.
• Your heat pump or air conditioner is more than 10 years old.
  • Replacing your system with an Energy Star-certified unit could save up to 20 percent on your heating and cooling bills.
• Your furnace or boiler is more than 15 years old.
  • You may choose to replace your system with an Energy Star-certified furnace (which is 15 percent more efficient than a conventional furnace) or an Energy Star-certified boiler (which is 5 percent more efficient).
• Your home has humidity problems.
• Your home has excessive dust.
  • Leaky ducts can pull particles and air from attics, crawl spaces and basements and distribute them throughout your house. Sealing your ducts may be a solution.
• Your heating or cooling system is noisy.
  • You could have an undersized duct system or a problem with the indoor coil of your cooling equipment.
• Your score on the Home Energy Yardstick is below five.
  • That means your home energy use is above average and you're probably paying too much for your utilities.