ASHARE Service Life
Expected Service Life
Equipment Type |
Median Years |
Air Conditioners |
|
| Window Unit | 10 |
| Residential single or split package | 15 |
| Commercial through-the-wall | 15 |
| Water cooled package | 15 |
Heat Pumps |
|
| Residential air-to-air | 15 |
| Commercial air-to-air | 15 |
| Commercial water-to-air | 19 |
Roof Top Air Conditioners |
|
| Single zone | 15 |
| Multizone | 15 |
Boilers, Hot Water (steam) |
|
| Steel water tube | 24(30) |
| Steel fire tube | 25(25) |
| Cast iron | 35(30) |
| Electric | 15 |
| Burners | 21 |
Furnaces |
|
| Gas or oil fired | 18 |
Unit Heaters |
|
| Gas or Electric | 13 |
| Hot water or steam | 20 |
Radiant Heaters |
|
| Electric | 10 |
| Hot water or steam | 25 |
Air Terminals |
|
| Diffusers, Grills, and Registers | 27 |
| Induction and fan coil units | 20 |
| VAV and double-duct boxes | 20 |
Air Washers |
17 |
Ductwork |
30 |
Dampers |
20 |
Fans |
|
| Centrifugal | 25 |
| Axial | 20 |
| Propeller | 15 |
| Ventilatiing roof mounted | 20 |
Coils |
|
| DX, Water or Steam | 20 |
| Electric | 15 |
Heat Exchangers |
|
| Shell-and-tube | 24 |
Reciprocating Compressors |
20 |
Package Chillers |
|
| Reciprocating | 20 |
| Centrifugal | 23 |
| Absorption | 23 |
Cooling Towers |
|
| Galvanized Metal | 20 |
| Wood | 20 |
| Ceramic | 34 |
Air-Cooled Condensers |
20 |
Evaporative Condensers |
20 |
Insulation |
|
| Molded | 20 |
| Blanket | 20 |
Pumps |
|
| Base-mounted | 20 |
| Pipe-mounted | 10 |
| Sump and well | 10 |
| Condensate | 15 |
Reciprocating Engines |
20 |
Steam Turbines |
30 |
Electric Motors |
18 |
Motor Starters |
17 |
Electric Transformers |
30 |
Controls |
|
| Pneumatic | 20 |
| Electric | 16 |
| Electronic | 15 |
Valve Actuators |
|
| Hydraulic | 15 |
| Pneumatic | 20 |
| Self-contained | 10 |
Source: Data from national survey of the US by ASHRAE Technical Committee TV 1.8 (Akalin 1978). Updated by TC 1.8 in 1986. See Lovvorn and Hiller (1985) and Easton Consultants (1986) for more information.
Downloads
Online Contact Form
An easy quick way to get answers or leave comments. Fill out our online form today.
A CorVal Group company
Visit CorVal Group