Automatic Vent Opener

Automatic Vent Opener

Item # 11-229
$69.95
Quantity
ADD TO CART

Customers Also Bought

$2,700.00
$1,498.00
(1)
$1,399.00
(6)

Heat-Sensing Greenhouse Vent Opener Works Without Electricity

This device opens and closes your greenhouse vent panels for reliable climate control even when you’re away! No electrical power is required. Fluid-filled cylinders expand in warm temperatures. You can raise or lower the temperature setting with a simple twist of the cylinder.

  • Steel with paraffin in the vent opener cylinder
  • Rated to lift up to 15 lbs.
  • Depending upon installation, this vent opener will open a vent 12-18"
  • The opening temperature can be adjusted from approx. 65° to 80° F
  • 12" L; weighs 1/2 lb.

REVIEW SNAPSHOT®

by PowerReviews
Automatic Vent Opener
 
4.6

(based on 9 reviews)

100%

of respondents would recommend this to a friend.

Pros

  • Solid construction (8)
  • Extends season (7)
  • Weather proof (4)

Cons

    Best Uses

        • Reviewer Profile:
        • Do-it-yourself (5)

      Reviewed by 9 customers

      Sort by

      Displaying reviews 1-9

      Back to top

       
      5.0

      Works Amazingly Well

      By Don

      from Oklahoma City, OK

      About Me Do-It-Yourself

      Verified Buyer

      Pros

      • Extends Season
      • Simple To Use
      • Solid Construction

      Cons

        Best Uses

        • Greenhouse Vents

        Comments about Automatic Vent Opener:

        I tried a cheaper brand, but after returning them 3 times and still not working I decided to try this one.

        I was amazed. While this is not the cheapest on the market, here's one time when you truly get what you pay for.

         
        5.0

        I don't get hot and bothered!

        By Connie the crazy plant lady

        from Grove City, Ohio

        About Me Do-It-Yourself

        Verified Buyer

        Pros

        • Extends Season
        • Solid Construction
        • Weather Resistant

        Cons

          Best Uses

          • Protect Garden

          Comments about Automatic Vent Opener:

          My little greenhouse is almost old enough to vote and the original vent opener finally wore out after faithful years of letting the heat out day after day. If I worked as well or as hard as that thing did I've have wore out long before it did!

           
          5.0

          First Class Product

          By Rita

          from San Antonio Texas

          About Me Novice

          Verified Buyer

          Pros

          • Solid Construction
          • Weather Resistant

          Cons

            Best Uses

            • Works On My Greenhouse

            Comments about Automatic Vent Opener:

            This vent opener is for my 20 year old Northern Lights greenhouse. My husband had to make a slight modification on the hardware to allow the window to open. I would not have known to do that. This product is the only one out there I have found that works. The cylinder is the key to the workings, and it usually lasts several seasons.

            (1 of 1 customers found this review helpful)

             
            4.0

            no more fried starts

            By Eric

            from Northampton, MA

            About Me Professional

            Verified Buyer

            Pros

            • Extends Season
            • Solid Construction

            Cons

              Best Uses

                Comments about Automatic Vent Opener:

                -As other people said the instructions are confusing, but once it is installed it's great. -Provides peace of mind, you KNOW that the frame is open when it's warm.

                 
                5.0

                Exactly what I needed

                By Andy the Eggman

                from Bfranford, CT

                About Me Do-It-Yourself

                Verified Buyer

                Pros

                • Extends Season
                • Solid Construction

                Cons

                  Best Uses

                    Comments about Automatic Vent Opener:

                    I bought a greenhouse from GS ten years ago and have needed replacement window openers for several years. This is a perfect replacement. I now just need to buy the thermo-piston parts for my other windows.

                    (2 of 2 customers found this review helpful)

                     
                    4.0

                    Great, but read the SMALL print!

                    By Sally

                    from Ellensburg, Wa

                    About Me Do-It-Yourself

                    Pros

                    • It works
                    • Mindless temp regulation
                    • Solid Construction

                    Cons

                    • Cylinder ruined by freeze

                    Best Uses

                    • Chicken coops
                    • Greenhouse windows

                    Comments about Automatic Vent Opener:

                    The cylinder must be removed in areas with cold winters, or it becomes inoperable. Unfortunately I neglected to do this, all the cylinders failed, and now I'm looking to replace them. Otherwise these are very handy on the greenhouse to regulate the temp without having to be around.

                    (1 of 1 customers found this review helpful)

                     
                    4.0

                    wow, it really works

                    By little girl

                    from Indpls., IN

                    About Me Do-It-Yourself

                    Verified Reviewer

                    Pros

                    • Extends Season
                    • Solid Construction
                    • Weather Resistant

                    Cons

                      Best Uses

                      • Protect Garden

                      Comments about Automatic Vent Opener:

                      I couldn't believe that it really works. I don't know how it actually opens the lid of the cold frame but it does. The lid is a little heavy also, so I was really surprised.It's easy to use and set up.

                      (4 of 4 customers found this review helpful)

                       
                      4.0

                      Great item

                      By Bob J.

                      from Rochester, NY

                      About Me Handyman

                      Verified Buyer

                      Pros

                      • Extends Season
                      • Weather Resistant

                      Cons

                        Best Uses

                          Comments about Automatic Vent Opener:

                          We use the lifter on a home made cold frame and it works great.

                          (4 of 4 customers found this review helpful)

                           
                          5.0

                          Amazing!

                          By Silver Fox

                          from Springfield, Missouri

                          About Me Novice

                          Verified Buyer

                          Pros

                          • Extends Season
                          • Solid Construction

                          Cons

                            Best Uses

                              Comments about Automatic Vent Opener:

                              I don't understand how it works, but IT WORKS!!
                              I'm new to hobby greenhousing but the automatic vent opener gives me a good sense of security that I won't cook my plants.

                              Displaying reviews 1-9

                              Back to top

                               
                              • Sorry, no shipments to AA,AE,AF,AK,AP,GU,HI,PR,VI

                              YOU MAY ALSO LIKE

                              • PDPCarousel
                              • PDPCarousel
                                <isprint value='${image.alt}' encoding='off' />
                                $29.95
                                $24.89
                                (163)
                              • PDPCarousel
                              • PDPCarousel
                                <isprint value='${image.alt}' encoding='off' />
                                On Sale
                                (209)
                              • PDPCarousel
                              • PDPCarousel
                                <isprint value='${image.alt}' encoding='off' />
                                $49.95
                                $39.89
                                (65)
                              • PDPCarousel
                              • PDPCarousel
                              • PDPCarousel
                              • PDPCarousel
                              • PDPCarousel
                              • PDPCarousel
                                <isprint value='${image.alt}' encoding='off' />
                                $199.00
                                $169.89
                                (6)
                              • PDPCarousel
                              • PDPCarousel
                                <isprint value='${image.alt}' encoding='off' />
                                $169.00
                                $144.89
                                (198)