Recently, Nautilus Investments LLC has received one of the nation’s very first Energy Star ratings for multifamily buildings from the United States Environmental Protection Agency for the 6731 S. Jeffery Blvd. project. We scored a 99 percent out of a possible 100 percent. To this honor and achievement, I owe much of the credit to Rayes Boiler. Your superior boiler product has allowed us to realize over 60% energy savings per year. I am continually amazed at how much that initial investment in your boiler has saved us over the years ..