"I use Blue Flame for all my HVAC needs. I recently had my heater filter and humidifier pad replaced. I also had my duct work and dryer vent cleaned out. Bill and Rob were very professional and knowledgeable. They did a great job, I can really tell a huge difference with the cleaning performed. They also took great care in keeping the house in the condition they found it in (in the case they had to shift things around to make room for tools/equipment). I also had backdraft flaps installed for my attic fans. Fair prices and great work overall. Will continue to have these guys coming back for regular maintenance."