I never get extended warranties. The way I see it, you either get extended warranties for every big purchase, or none. You simply don't know which item will last and which will break. Most big appliances come with 1-year warranty and I figure (right or wrong?), if its faulty or defective, you'll find out year 1. The money I save by not buying any extended warranties will go towards repairs if I need them. but that's just me.
A quick story about 3rd party warranties; I bought a used vehicle many years ago and opted for a 3rd party extended warranty. While I was on vacation in Texas (in July), the A/C went out. I took it to a dealership where they diagnosed the faulty part, condenser I think. Turns out it wasn't that, but something else. When they tried to get authorization from the warranty company for the 2nd repair, the warranty company wouldn't authorize it until they sent out an adjuster, which would take 3 days. I was heading home in 2 days, so I had to delay the repair and drive more than 2 days through the south with no A/C. I was fuming, literally and figuratively. Never again. If it was a manufacturers warranty, they would have repaired it on the spot.