Intake Hose Inside Or Outside

ZERO BREEZE Mark 2 air exhaust
Portable Air Conditioner
Q: Why do you run the intake hose outside to draw in hot air instead of leaving it inside to pull in cold air? Seems more energy efficient to recirculate the cooled air.
A: The unit does not draw air from the outside to be used inside the space. It draws air from the outside to cool the condenser of the a/c system then exhausts the same air back outside. The inside air is recirculated through the front evaporator side.
If the intake hose is put inside, cooled air will be sucked in and wasted on cooling the condenser. As cooled air is constantly exhausted outside, it’ll create negative pressure and draw hot air into the air conditioned area.
Tips:
Keep the intake and outlet tubes away from each other, otherwise the intake will suck the hot air back in, making the unit to work harder to cool down the air.
⁠___
Got questions?
Leave them in the comment👇 We’ll cover one by one in future posts.

With 💙
Team ZERO BREEZE

5 comments


  • James

    The answers already been given. If the hose was in taking air from inside, it’d created a negative air pressure inside, thus pulling more hot air inside to negate that negative air pressure. Air conditioning is simply more than just cooling air. It has to do with Dynamics of high and low pressure As well as others


  • Team ZERO BREEZE

    Hi@Roy, if you were to use it outside, there are no hoses or installation required for this method, simply aim the cool air
    directly at yourself.


  • Roy

    If the system is being used to cool someone sitting or standing outside. Do the intake and exhaust need to be attached or how will this work


  • ZERO BREEZE

    @Carolyn Gaylord, because continuous extraction of internal air oxygen will cause negative pressure as the oxygen level decreases over time.


  • Carolyn Gaylord

    I don’t understand why there is an intake tube to draw hot air from outside. Why can it not just draw the hot air from in the room? Seems like defeating the purpose of cooling air in the room when there is hot air in the room.


Leave a comment

Please note, comments must be approved before they are published

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.