What makes Charter Oak the right choice? We bring decades of experience to the table on every job. We know how to fix your products right the first time. Charter Oak Mechanical brings quality products, service, and experience to the Greater Hartford HVAC industry. We install, repair, and service heating systems, air conditioning systems, central air conditioning systems, hot water systems, forced hot air systems, duct work, furnaces, boilers, water heaters, air handlers, condensing units, condensers, compressors, ice machines, walk-in coolers & freezers, pool heaters, heat pumps, roof top units, and all fuels; gas, oil, propane, hybrid, electric. Additionally, we service any brand however we currently sell Lennox, Mitsubishi, Carrier, American Standard, Trane, Payne, Bryant, Rheem, and Rudd.