
Why VENTRY Fans?
High CFM.
That is the main reason fire fighters choose VENTRY Fans, plain and simple. More air flow means better PPA and PPV. (See fan specs.)
All other benefits are just icing on the cake. Aircraft-style Safety Propellers and extendable legs provide a multitude of advantages over box fans and solve the problems commonly associated with PPA / PPV. Here are some of the most common complaints about box fans, all of which are solved by VENTRY Fans:
VENTRY Blowers are engineered for fire fighting (by fire fighters!), positive pressure ventilation and attack (PPV and PPA), controlled burning (stump burning, slash burning, brush burning), hot air balloon inflation, drying, cooling, misting, and more.
U.S. Patent 5,503,526
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VENTRY Fan Advantages over Ground-Huggers
Click on the illustration below to enlarge.

Consider these features of VENTRY Fans:
- State-of-the-art Smoke-Busting Safety Propellers.
- Require no new training. Same reliable, familiar Honda engines and simple, intuitive operation.
- Elevate air stream over obstacles and into elevated or awkward openings.
- Straddle obstacles, stand securely on uneven surfaces (even stairs!) and minimize “walking”
- Allow maximum flexibility in aiming airstream up and down at steep angles.
- Have low equilibrium CO levels well below OSHA warning levels.
- Have a simple design for easy field service (parts available through your local hardware store or via manufacturer).
- Are efficient so have low noise levels of 94dB (at full throttle) and won’t frustrate on-scene communications.
- Include three-year warranties on all materials and workmanship.
Over the years, hundreds of fire departments have shown that our patented combination of extendable legs and smoke-busting Safety Propellers means that VENTRY Fans vastly increase fire scene and fire crew safety by delivering fresh air to victims and removing deadly smoke. They can also be used to pressurize and protect unaffected areas of a structure.
We recommend that the legs on VENTRY Fans be fully extended for every use, to maximize safety, extend the life of the propeller, and realize higher air volumes.
What challenges have you had with other fans? What problems do you need solved? Please see our FAQ pages, on which we have addressed 20 different topics relating to how VENTRY Fans will make you safer and more effective! Just click here and pick a topic...
The Basics
The whole idea of ventilation — especially for firefighting and PPV — is to deliver lots of fresh air FAST! The fan you use MUST...
- . . . allow for rapid setup on any terrain without extra crew or cribbing;
- . . . set up far from the door so as not to interfere with the entry/exit of crew and victims; and
- . . . push a LOT of air directly where it’s needed!
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How long are you willing to wait?
Divide the cubic feet of the typical structure you ventilate by the CFM rating of your fan or the one you might purchase. Our 4-HP fan will completely replace the air in a 2000 square foot house in less than 1 minute! (See calculations at right.) Our 6.5 hp fan will do it in 33 seconds! |
Example: 2000 square foot house with 8-foot ceilings = 16,000 cubic feet.
A 20GX120 VENTRY Fan pushes 16,500 CFM.
16,000 CF/16,500 CFM = .97 minutes, so our smallest fan would completely ventilate this house in less than 1 minute! |
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