| Heating, centilation and air conditioning (HVAC) |
Life in years |
| Central air conditioning unit (newer units should last longer) |
15 |
| Window unit |
10 |
| Air conditioner compressor |
15 |
| Humidifier |
8 |
| Electric water heater |
14 |
| Gas water heater (depends on type of water heater lining and
quality of water) |
11-13 |
| Forced air furnaces, heat pump |
15 |
| Rooftop air conditioners |
15 |
| Boilers, hot water or steam (depends on quality of water) |
30 |
| Furnaces, gas- or oil-fired |
18 |
| Unit heaters, gas or electric |
13 |
| Radiant heaters, electric |
10 |
| Radiant heaters, hot water or steam |
25 |
| Baseboard systems |
20 |
| Diffusers, grilles, and registers |
27 |
| Induction and fan coil units |
20 |
| Dampers |
20 |
| Centrifugal fans |
25 |
| Axial fans |
20 |
| Ventilating roof-mounted fans |
20 |
| DX, water, and steam coils |
20 |
| Electric coils |
15 |
| Heat Exchangers, shell-and-tube |
24 |
| Molded insulation |
20 |
| Pumps, sump and well |
10 |
| Burners |
21 |
| Sources: Air-Conditioning and Refrigeration Institute,
Air Conditioning, Heating, and Refrigeration News, Air Movement
and Control Association, American Gas Association, American Society
of Gas Engineers, American Society of Heating, Refrigeration and
Air-Conditioning Engineers, Inc., Safe Aire Incorporated |
| Home security appliances |
Life in years |
| Intrusion systems |
14 |
| Smoke detectors |
12 |
| Smoke/fire/intrusion systems |
10 |
| Insulation |
Life in years |
| For foundations, roofs, ceilings, walls, and floors |
Lifetime |
| Sources: Insulation Contractors Association of America,
North American Insulation Manufacturers Association |
| Landscaping |
Life in years |
| Wooden decks |
15 |
| brick and concrete patios |
24 |
| Tennic courts |
10 |
| Concrete walks |
24 |
| Gravel walks |
4 |
| Asphalt driveways |
10 |
| Swimming pools |
18 |
| Sprinkler systems |
12 |
| Fences |
12 |
| Sources: Associated Landscape Contractors of America,
Irrigation Association |
| Masonry |
Life in years |
| Chimney, fireplace, and brick veneer |
Lifetime |
| Brick and stone walls |
100+ |
| Stucco |
Lifetime |
| Sources: Brick Institute of America, Architectural
Components, National Association of Brick Distributors, National
Stone Association |
| Millwork |
Life in years |
| Stairs, trim |
50-100 |
| Disappearing stairs |
30-40 |
| Paints and stains |
Life in years |
| Exterior paint on wood , brick, and aluminum |
7-10 |
| Interior wall paint (depends on the acrylic content) |
5-10 |
| Interior trim and door paint |
5-10 |
| Wallpaper |
7 |
| Sources: Finnaren and Haleg, Glidden Company, The
Wall Paper |
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