Insulation Technology   HVAC Vacuum Insulation Timolino’s HVAC Vacuum Insulation features state-of-the-art vacuum chamber technology produces a consistent “high vacuum” for superior temperature retention in compact, lightweight designs. The exterior surface of the liner is coated with copper using the electrolysis method. Cooper coating can efficiently insulate radiant heat and enhances thermal performance.   DualMax Thermal Insulation DualMax thermal insulation creates an air space between two stainless steel walls which help to keep beverage hot or cold for an extended period of time.