For the past two months, I've been having problems with my Buderus propane furnace. I called Whitney Oil for service because they originally installed it when I brought my unit six years ago. First it died on a Friday afternoon and wouldn't work at all. They determined the control unit was bad, but I had to go an entire weekend without heat until they could obtain one from their supplier and replace it. That seemed to solve that problem. Then it started spitting out soot, which indicates incomplete combustion and could be a serious health hazard. They eventually decided it had the wrong orifice and changed it, which seemed to work. Then it started triggering over and over again when it tried to light. I could hear it trying multiple times, sometimes for a couple of minutes, before it would finally light. They tried a number of things and finally replaced the gas pressure valve. Then the soot problem recurred, only much worse than before. All this time, the flame was never the bright blue color you expect, but rather a yellow-orange. They thought there might be a draft problem, so my condo maintenance man got involved, went up on the roof and examined the chimney, but couldn't find any thing to explain the poor performance, just a lot of soot. They would come, clean it out, and then a couple of days later, the soot would be back. It got to the point where I dreaded calling them, thinking that they might have me pegged as a chronic complainer, but every time I called, they sent someone over who spent a considerable amount of time trying to figure out what was going on. Finally, despite all their efforts, I had another episode where it stopped working late at night and finally, I got fed up and asked them to replace the unit. Barry Whitney offered me a brand new furnace (the same model as he has in his own house), at cost. And he didn't charge me for the 40-50 man hours his team spent trying to get my 6-year-old furnace working properly because they didn't solve my problem. They don't know I'm posting this, but I wanted to let everyone know that Whitney is an honest and reliable company dedicated to quality customer service. HIGHLY RECOMMENDED!!!