Home Warranty 101
A Home Warranty is an insurance policy against mechanical defects of the home. If a mechanical item breaks down the home owner then calls the Home Warranty Company. The company then sends out a technician to look at the defects. The home owner will pay a $55 deductible and the technician will invoice the Home Warranty Company for all of the covered costs over and above that amount.
The basic cost of a Home Warranty policy can start at about $255 for condos and $275 for single family homes. The basic plan for a home warranty policy will include items such as heating, plumbing, dishwasher, garbage disposal, garage door opener, water heater, plumbing stoppages, attic and exhaust fans, duct-work, electrical system, oven/cook-top/range, trash compactor, built-in microwaves, instant hot water dispensers, circulating pumps, toilets, sump pumps, and jetted tubs. A home owner can pay extra for coverage on refrigerators, washer/dryer, air conditioning, and swimming pools/hot tubs.
If you are buying a home I recommend asking the seller to give a home warranty, if they are not willing to purchase one for you. I recommend you purchase one for yourself.
They are so common that it is a fill in the blanks of the Salt Lake Board Of Realtors Purchase Contract, section 10.3
Home warranty provider listing and reviews can be found here when you are considering buying home warranty
http://www.homewarrantyreviews.com/reviews