LIFTLOCK 2500 Whole House Fan – no duct


Current Lead Time is 2-3 weeks

Ships within the Continental US only

One of the most efficient whole house fans available today, the LiftLock 2500 Whole House Fan uses a revolutionary ductless design and drop-door damper to achieve a remarkable 93.3 CFM per watt efficiency. The LiftLock’s 20-inch diameter, high-precision fan blades provide maximum airflow at high speeds, allowing you to quickly cool your home each evening.  Designed to mount on 16″ or 24″ on-center framing, and factory-equipped with a 10′ power cord, the LiftLock is quick and easy to install in smaller homes and tight attic spaces.

The LiftLock drop down door and flange frame are powder coated white to blend in with most ceilings and can be painted on-site if desired.

Non-Ducted airflow rated at 3478 Q-CFM™

2698 CFM HVI-916 – CA Title 24 airflow


SKU: TTI-HV2800 Kaze


  • Powerful ECM motors circulate over 3400 CFM providing energy-efficient whole-home cooling
  • Unique drop-down damper closes and seals to the attic space when not in use to keep cool air in the living space
  • Brushed aluminum fan components with white, powder-coated damper
  • Controlled by 10-speed wall control switch with 12-hour timer (included with purchase) or an optional remote (contact 800-222-5932 or
  • Easy to install  |  Fits 16” – 24” on-center joists  |  No joist-cutting required
  • 3-year parts limited warranty
*CFM rates were measured in a controlled test environment. Results will vary due to building construction.

Product Specs

HV2800 Kaze Ductless Whole House Fan Product Specifications Cutsheet



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