In October 2009 our furnace was making a horrible noise. I called Atlantic based on a referral of a friend. Kevin came out and diagnosed the issue. He said that he could fix the unit, but it would not be worth it, and that we should replace the furnace. He gave me several options to choose from. I informed him that we would be getting at least 2 more estimates to do a comparison. During the comparison shopping I had several questions for Kevin and he was quite patient with me, answering all of my questions. We ended up going with Atlantic and have been pleased for the most part. In November of 2010, we called them for the annual tune up. They came out on Dec 1 and told me everything was fine. I asked about the filter and he said that it did need changing. My husband changed it a day or so later. On Jan 3 we noticed that our house was not getting warm. Initially we thought it was the thermostat, but realized that it was not the issue. I called Atlantic at 6:00 PM Tuesday Jan 4th and he said they could not get there that night, but would be there first thing in the morning. Upon diagnosing the issue, we were informed it was the heat limiting switch, and that the warranty would not cover it due to 'lack of maintenance'. The furnace filter was dirty. I explained to the tech that we had replaced the filter about a month ago and he implied that he didn’t believe me, and that it didn’t matter, because the filter was so dirty. He said that if he did submit the part under warranty that Carrier would void the warranty. As we needed heat, I approved the repair for a cost of $200. The next day, I called Kevin to discuss the lack of maintenance issue. I informed him that we changed the filter right after the tune up, which was a month ago. I also pointed out that the owner’s manual says to replace it every 1-2 months, which is what we did. He again reiterated the same thing the tech did; the filter was dirty and went on to say that some filters need replaced every 2 weeks. I understand about warranties, as my husband works for an extended warranty company; however, we followed the owner’s manual recommendations. I asked him what recourse the consumer has in cases like this. I.e., how do we prove that we changed the filter regularly? Unfortunately, he didn’t have a solution. However, he called us later and told us that he would reimburse us for the part, $50.00. While I am frustrated about the entire situation, I know that it is not Atlantic’s fault, and Kevin was very nice about the entire situation. We have learned a valuable lesson, in that we will now start changing our filters every 2-3 weeks, rather than every month. All in all, Kevin is an honest and trustworthy man.