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Service Professor is an electrical, plumbing, heating and cooling service & repair company all in one! We have been locally owned and operated since 1978 offering same-day, quality service to over 75,000 customers throughout West Michigan! Service Professor strives to deliver exceptional customer service to keep our customers' homes running safely and efficiently all year long. Our professional, friendly technicians undergo thorough background checks and drug testing to ensure the safety of your home and family. We provide upfront pricing, so you always know exactly what you'll pay before any work begins. We are licensed and insured!

For over 40 years Doty Mechanical has been providing quality heating and cooling installation, maintenance and repair service to the Lansing area. As Lansing's only locally owned and operated Carrier Factory Authorized Dealer, Doty Mechanical is committed to Lansing and the people that live here. We are dedicated to offering the exceptional service our customers deserve. That is why our technicians are NATE Certified (which goes way beyond being factory trained). We can repair your furnace or air conditioner regardless of brand, or if you are ready to purchase a new one, we will happily provide you with a FREE ESTIMATE! Our customers are a huge part of our past and, more importantly, our future success. If you are new to Doty Mechanical again we say welcome, if you are a current customer we thank you for your continued patronage.