M.J. Emonds Mechanical Contractors, LLC is a heating, ventilation and air conditioning company dedicated to providing quality HVAC installation and service in Connecticut. We are a certified Trane Comfort Specialist Dealer offering dependable service and quality Trane products to central Connecticut customers. M.J. Emonds has over 20 years of experience in the design, fabrication, installation and service of heating and air conditioning systems for residential and commercial customers.