Solicitation Attach D. Appendix B-ASHRAE_Chart_HVAC_Life_Expectancy.pdf

ASHRAE Equipment Life Expectancy chart

ASHRAE is the industry organization that sets the standards and guidelines for most all HVAC-R equipment.

For additional info about ASHRAE the website is www.ashrae.org .

Equipment Median Item 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 Multi-zone 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, grilles, 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 Ventilating roof-mounted 20

Coils

DX, water, or steam 20 Electric 15

Heat Exchangers

Shell-and-tube 24

Reciprocating compressors 20

Packaged 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 24

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