The most efficient whole house fan available today, the AirScape® LiftLock 2500 uses a revolutionary
ductless design and drop-door damper to achieve a remarkable 93.3 CFM per
watt efficiency, making it 119% more efficient than any other in our line.
AirScape LiftLock 2500 Spec Sheet
What's in the box
This unit includes:
HVI-916 (CA Title 24) Airflow and Efficiency for LiftLock (no duct)
| Fan Speed Setting |
Airflow (CFM) |
Energy Use (Watts) |
Efficiency (CFM per Watt) |
|---|---|---|---|
| 1 | 658 | 13.9 | 47.3 |
| 2 | 969 | 20.1 | 48.2 |
| 3 | 1299 | 31.2 | 41.6 |
| 4 | 1642 | 49.4 | 33.2 |
| 5 | 1933 | 75.2 | 25.7 |
| 6 | 2230 | 111.4 | 20.0 |
| 7 | 2542 | 159 | 16.0 |
| 8 | 2855 | 211 | 13.5 |
| 9 | 3137 | 287 | 10.9 |
| 10 | 3291 | 327 | 10.1 |
Features for AirScape LiftLock
- Q-CFM™ Max Airflow**: 3478 CFM
- HVI-916 Max Airflow (CA Title 24): 3291 CFM
- For Square Footage: up to 2200 (under ideal conditions)
- Fan: 20" fan
- Sound Level: 36 to 59 dBA @ 1m
- Attic Seal: Air Tight Actuated Metal Door with Foam Gasket
- Insulation: R-9.6
- Required Attic Venting: 3.6 sq.ft. min net free area (5.5 recommended)
- Recommended Attic Height/Clearance: 48" (contact us for help with tight attic spaces)
- Controls: Low-voltage hardwired switch with timer, optional wireless remote
- Grille: Not required. Drop down door
- Installation: Drops in between 16" or 24" O/C joists
- Electrical: 120 VAC, 60 Hz, 2.75 Amps
- Warranty: 3 Years
Dimensions and Weight for LiftLock
- Door Descent: 8" below ceiling
- Rough Opening: 14.5" x 22. 5"
- Unit Size: 22.25" x 27.25" x 25.25"
- Unit Weight: 32 lbs
- Shipping Weight: 38 lbs
AirScape LiftLock Ducted Spec Sheet
What's in the box
This unit includes:
HVI-916 (CA Title 24) Airflow and Efficiency for LiftLock Ducted
| Fan Speed Setting |
Airflow (CFM) |
Energy Use (Watts) |
Efficiency (CFM per Watt) |
|---|---|---|---|
| 1 | 459 | 14.7 | 31.2 |
| 2 | 816 | 21 | 38.9 |
| 3 | 1153 | 33 | 34.9 |
| 4 | 1437 | 51.7 | 27.8 |
| 5 | 1724 | 79.8 | 21.6 |
| 6 | 2003 | 117 | 17.1 |
| 7 | 2297 | 165.9 | 13.8 |
| 8 | 2568 | 224 | 11.5 |
| 9 | 2813 | 302 | 9.3 |
| 10 | 2948 | 345 | 8.5 |
Features for AirScape LiftLock Ducted
- Q-CFM™ Max Airflow**: 2945 CFM
- HVI-916 Max Airflow (CA Title 24): 2948 CFM
- For Square Footage: up to 1900 (under ideal conditions)
- Fan: 20" fan
- Sound Level: 36 to 52 dBA @ 1m
- Attic Seal: Air Tight Actuated Metal Door with Foam Gasket
- Insulation: R-9.6
- Required Attic Venting: Not applicable
- Recommended Attic Height/Clearance: 40" (contact us for help with tight attic spaces)
- Controls: Low-voltage hardwired switch with timer, optional wireless remote
- Grille: Not required. Drop down door
- Installation: Drops in between 16" or 24" O/C joists
- Electrical: 120 VAC, 60 Hz, 2.9 Amps
- Warranty: 3 Years
Dimensions and Weight for LiftLock
- Door Descent: 8" below ceiling
- Rough Opening: 14.5" x 22. 5"
- Unit Size: 22.25" x 27.25" x 25.25" plus duct
- Unit Weight: 42 lbs
- Shipping Weight: 68 lbs
Sizing your AirScape LiftLock 2500
We offer whole house fans in a wide range of airflow capacities to meet the needs of every size of home. In general, a bigger house needs a bigger fan.
Home Size
1500 - 2500 sf
Airflow Required
2000 - 3500 CFM
Recommended Models
LiftLock 2500
3200
3400
Home Size
2500 - 3500 sf
Airflow Required
3500 - 5000 CFM
Recommended Model
5300
Home Size
3500 - 4500 sf
Airflow Required
4500 - 5500 CFM
Recommended Model
5300
Multiple units might be required
House under 1500 sq ft? See our compact AirScape LiftLock 1700, Ventura 1700 or AirScape LiftLock drop-in units.
Bigger is better
We always recommend the largest unit your space and budget will allow. Here’s why: a larger fan moves more air at a lower RPM, which is quieter AND more energy efficient at the same time. Learn more
Using your AirScape
Our 10 speed settings provide the control you need for effective cooling that is easy to live with. Adjust the speed below to get a feel for the experience.
Low speed | 1-2
Use case: All night long to keep things fresh and maximize thermal mass cooling of the building and contents.
Perceived sound level: Practically silent, even directly under the vent.
The LiftLock Door
See the LiftLock door in action as installed in our showroom. Shown with special order raw aluminium finish door.
Amazing power
Ultimate efficiency
A high-tech ECM motor provides the ultimate in energy efficiency, durability and smooth operation.
Optimal air movement
There is more to fan than that meets the eye. With decades of experience in HVAC engineering, our precision fan blades have been carefully calibrated for optimal airflow efficiency.
Precision electronics
Unlike our competitors, AirScape uses advanced custom-designed electronics to achieve superior performance and efficiency.
Master the evening breeze
An elegant touch-activated wall plate provides easy selection of fan speed and timer duration. The optional remote allows you to control your fan from anywhere in the home.
Reduce your energy footprint and dramatically improve the livability of your home with fresh natural breezes that are a joy to sleep in. Instead of living in stale, recycled refrigerated air, an AirScape fan will change the air in your home between 4 and 10 times an hour, with near-silent operation. In a survey, over 80% of users said their AirScape fan “absolutely” adds to the enjoyment of their home. 85% said they were either “thrilled” or “very satisfied” with their AirScape purchase.
