Ecobee ECB402 Air Conditioner – New Open Box Up for sale is an Ecobee ECB402 Air Conditioner component in new open box condition . The item has never been used but was opened for inspection. Packaging may show light wear from storage, but the product itself is in excellent condition. Details: Brand: Ecobee Model: ECB402 Condition: New (Open Box) Includes: Original unit and any accessories shown in photos This is a great opportunity to get an Ecobee air conditioner component at a discounted price.