Our Terms of Service and Privacy Policy have changed.

By continuing to use this site, you are agreeing to the new Privacy Policy and Terms of Service.

4 of 8
BACKNEXT
Heating, Ventilation, and Air Conditioning (HVAC)
Heating, ventilation, and air conditioning systems require proper and regular maintenance in order to work efficiently, but even in the best case scenarios most components of such systems only last 15 to 25 years.

Furnaces on average last 15-20 years, heat pumps 16 years, and air conditioning units 10-15 years.

Tankless water heaters last more than 20 years, while an electric or gas water heater has a life expectancy of about 10 years.

Thermostats usually are replaced before the end of their 35-year lifespan due to technological improvements.



NEXT: Paint, Caulks and Adhesives

Last updated October 16 2008: 4:37 PM ET
More Galleries
Homes in these ZIP codes are selling like crazy Strong job growth, growing interest from Millennials and affordable home prices are attracting home buyers to these cities. More
Working class whites & the government: It's complicated These Clearfield, Pennsylvania, residents are mad at D.C., but want more help. More
Dear Trump and Clinton: Here's what swing voters want These voices are based on interviews with American voters from the key swing states of Florida and Ohio. It's part of a special report titled "Your money, your vote," that will air on CNN on October 15. More

Special Offer