HVAC Systems Equipment Service Life


Equipment Item Median Years
Air Conditioners
Residential
Through-the-wall
Water Cooled Package
Computer Room

15
15
15
15
Heat Pumps
Air to Air
Water to Air

12
19
Commercial Package Units
Single-zone
Multi-zone

15
15
Boilers
Steel Water-tube
Cast Iron
Electric

24
30
15
Furnaces

Unit Heaters
18

18
Equipment Item Median Years
Air Terminals
Induction Fan Coil Units
VAV Boxes

27
20
Fans
Centrifugal
Axial
Propeller
Ventilating

25
20
15
20
Coils
D-X, water, steam
Electric

20
15
Heat Exchangers

Pumps
24

20
Controls
Pneumatic
Electric
Electronic

Air Cooled Condensers

20
16
15

20

Information obtained from American Society of Heating Refrigeration & Air Conditioning Engineers Systems Handbook