I called Lewis & Sons because my heat had been blowing fuses all winter, but I had just had some other company come in an replace the old fuse box. They identified that we had previously been told to use 50 watt fuses, but the system was pulling 60 watts and that was what was breaking down our HVAC. A small little thing, but they were professional and helpful and took the time to make sure the problem was fixed 1) correctly, and 2) the most cost-effective way possible.