We have had One Guard formerly Service One for 8 or more years and they have always been prompt and fixed everything that needed to be done.. Last year they replaced our AC unit as it was no longer easily repaired.. there was a bit of a problem with the new ac unit which they fixed right away.. We personally have had no problems with them at all.. That is why even tho the cost has gone up over the years, the house is older and things have just unfortunately gone up.. You get what you pay for and they offer a lot really for the ultimate plan..