For any of your heating and cooling problems remember two words, “Call Clayton!” From a broken furnace needing repaired in the dead of winter to a new heating or cooling system being installed, Clayton Heating and Air Conditioning has the solution! Clayton Heating and Air Conditioning HVAC Contractor has been serving the Mahoning and Trumbull County areas for over 50 years. Since being established in 1959 by Gene F. Clayton, we have been a favorite in the Youngstown community.