United States Department of Energy regulations require certain installation protocols for energy efficiency purposes. Information for Hillphoenix products which are NOT in compliance with those regulations can be found on this Legacy Information Page. We recognize that our valued customers may, from time to time, need access to this information. We will provide this information for reference purposes solely as a courtesy and only for a limited time. THIS INFORMATION SHOULD NOT BE USED IN CONNECTION WITH ANY NEW INSTALLATION. HILLPHOENIX WILL NOT BE LIABLE FOR ANY DAMAGES ARISING OUT OF SUCH USE.