Tamarack Technologies, Inc. (Tamarack) is a West Wareham, Massachusetts, based company that manufactures whole house fans. Tamarack sold or offered for sale whole house fans in California, from July 2015 to April 2020.

This case was the result of an industry complaint. The California Energy Commission's (CEC) investigation and testing process identified that Tamarack was manufacturing and offering for sale whole house fans that were listed in the Modernized Appliance Efficiency Database System (MAEDbS) with greater air flow and air flow efficiency data than could be verified through confirmatory testing.

To settle this matter, Tamarack executed a Settlement Agreement with CEC on April 8, 2021, for $6,500.00. The penalty monies are deposited into the Appliance Efficiency Enforcement Subaccount established by SB 454 of 2011 (Pavley). Tamarack has also agreed to a compliance plan to test all basic models and ensure MAEDbS listings are accurate before continuing to sell in California.