One entry per household. Must be a resident of the USA and over 18 years of age. Winner will be selected at random from all entries received. Winner must be able to pick up their prize at 6430 General Green Way, Alexandria, VA 22312 during normal business hours Monday through Saturday 9 AM - 4 PM. Basic installation included. If your HVAC system is deemed not compatible additional expenses may be incurred by the owner in order to complete the installation.