Asphalt Shingle Roof	18-25 yrs.
Asphalt Rolled Roof	8-12 yrs.
Furnace	18-25 yrs.
Gas Hot Water Tank	8-12 yrs.
Electric Hot Water Tank	10-15 yrs.
Plaster Walls	70-120 yrs.
Plaster Ceiling	60-90 yrs.
Dry Wall	40+ (too new)
Central Air	10-20 yrs.
Copper Plumbing	70-100 yrs.
Masonry Walls	100+ yrs.
Vinyl Siding	25-40 yrs.
Refrigerator	10-20 yrs.
Dishwashers	10-18 yrs.
Gas Ranges	15-25 yrs.
Washer	10-20 yrs.
Dryer	10-20 yrs.