Certified Training and Expertise Your Mitsubishi Electric Diamond Contractor is an independent dealer in your community that has reached the highest level of accreditation from Mitsubishi Electric Cooling & Heating. Factory trained in the Mr. Slim product, your dealer has invested the time to develop personalized, hands-on expertise in sales, installation and service at one of Mitsubishi Electric's approved training centers. So, when you work with a Diamond Contractor, you can be sure that you're getting the most professional, sure-handed installation and maintenance - the most reliable environmental comfort available from a Mitsubishi Electric Cooling & Heating system. What's more, you can be sure that your dealer is staying up-to-date on the technology as it evolves. And that should make you feel very comfortable, indeed. The Diamond Contractor Seven & Seven Warranty Program That's a seven-year limited warranty on compressors and seven years on parts. What could be simpler - or more reassuring? This is an exclusive benefit that only your Diamond Contractor can offer. Generous credit terms … and fast answers Diamond Contractor's have access to special promotions and - thanks to Fast Response Credit System - you can get your application approved quickly and conveniently, often within minutes. It's just one more benefit of dealing with your Mitsubishi Electric Diamond Contractor