I called Gunthers because they are one of the few HVAC companies that are approved to work on the proprietary equipment made by Carrier, plus the house is in American Fork, same town where Gunther's is based. They sent a tech out who in just 25 minutes analyzed my "no heat" problem and the necessary fix, good so far. He left to go pick up a part, the Gas Valve. He returned in just under 2 1/2 hours, as he had to drive to SLC for the valve. He went right to work and installed the gas valve in about 35 minutes . Great the furnace is now working. However, when I received the bill I was shocked! $985.96!! I have been a general contractor since 1973 and a property manager since 1985. I have had thousands of new HVAC systems installed, I have had repair work done on hundreds of furnaces over the past 36 years. I know alittle about this type of equipment and this type of work. I was absolutely stunned by Gunther's bill. I figured 3 1/2 hours of labor and a gas valve might run $550 to $600, but $1,000, no way!! When I called and talked to the service manager, Nathan Silvey, he said there was nothing he could do, no adjustment. So Beware, Silvey said they don't do service work by the hour, rather, they look in a book and charge a flat rate for certain types of work based on the book rate. They charged $43.75 to clean the flame sensor, no parts involved, just 15 to 20 minutes of labor. They charged $99 to just show up on site, no credit given toward the service work, then $843.21, the " book rate", to replace the gas valve. Actual time on site for their tech was exactly one hour. Travel to and from Salt Lake to pick up the part was about 2 hours and 25 minutes. I would have driven and picked up the part if they gave me that option. I was told the billing rate for their tech is $125 per hour. Wow, that is an expensive pick up and delivery service. Beware folks, ask a lot of questions before you have these folks come out and work on your equipment. I only called them because my regular HVAC repair guy couldn't get to me for several days and he said Gunthers was the only other local company he knew of that could get parts for Carrier equipment. Believe me, I will be more careful in the future... and no more Carrier equipment will go into any of my rentals. Their proprietary parts give little competition, as only Carrier approved companies can get their parts, so they can just charge whatever they want! Competition keeps the prices reasonable. Don't use Carrier equipment! Let me reiterate, workmanship was fine, the tech, Sergii, was a nice guy and went right to work, no beating around the bush with him. However, the price for what was done was way out of line. In addition, the failure of the service manager to attempt any reconciliation, cost reduction, or to compromise with me in any way, well, thus the low rating. Good luck folks! Know what you are getting into if you intend to have Gunther's work on your equipment.