Call Us 0800 800 880
Greenhouse Automatic Vent Opener
  • Greenhouse Automatic Vent Opener
  • Greenhouse Automatic Vent Opener

Evergreen Greenhouse Automatic Vent Opener

In Stock
4.6 (83 reviews)
$69
or 4 payments of $17.25 on
Price GuaranteeSeen a lower price?Ask us to beat it

Evergreen Greenhouse / Glasshouse Auto-Opening Vent.

Read more
Shipping options to:
Please select one
Quantity: 1
1 person has this in their cart
Add to Wishlist

Product overview

Evergreen Greenhouse / Glasshouse Auto-Opening Vent.

Top quality product backed by our 12 month warranty. Thermostat mechanism, automatically opens and closes the vent at a set temperature.

Its automatic operation adjusts the ventilation as temperature changes, allowing for optimal air flow in your greenhouse. No more worrying about your flowers and plants, even when you're away.

There's no need for troublesome cables or regular battery replacements.

- Starts to open at 18-25°C
- Fully open at 35°C and above
- Maximum extension of 45cm
- Maximum open weight 7kg

Similar models from other suppliers come in at $130+

Weight: 0.5kg
Packed carton size: 8.5cm x 5cm x 28.5cm

Average thickness of aluminium profiles: at least 1.5mm

Evergreen

Can we help?

Our friendly and knowledgeable gurus are trained to answer all your questions as quickly as possible. So if there’s anything you need to know just give us a call during business hours, or send us an email any time.

0800 800 880

Questions and answers

12 votes
Q:
What powers the automatic vent opener?
A:
It acts like a thermostat, the piston contains a mineral wax that expands when heated, opening the window. As the temperature drops this contracts and, with the help of the spring, closes the window.
By Trade Tested on April 01 2019
2 votes
Q:
Is it aluminium or steel? thanks!
A:
It's aluminium.
By Trade Tested on June 10 2020
2 votes
Q:
Hi, can i install it on a regular window?
A:
Sure, if it's not too heavy.
By Trade Tested on May 25 2020
2 votes
Q:
Would this work on other brands of greenhouses? Are they pretty standard sizes?
A:
Yes should do.
By Trade Tested on May 04 2020
0 votes
Q:
Can the device be bypassed to keep the vent shut (on a windy day)?
A:
Yes it can
By Trade Tested on January 15 2024
1 vote
Q:
Can we use this for a vertical window instead of a horizontal one?
A:
Yes, this would work with a vertical window too.
By Trade Tested on April 05 2022
1 vote
Q:
Will this work on the louver windows style the one that has 4 or so blades of glass?
A:
Yes most likely.
By Trade Tested on February 02 2021
1 vote
Q:
Do you sell replacement wax cylinders for these?
A:
No we don't.
By Trade Tested on May 22 2020
-2 votes
Q:
Will auto opener work on tunnel house with push up roof vent
A:
It will work on most green houses.
By Trade Tested on July 19 2021
0 votes
Q:
Hi, does it have one or two springs?
A:
It has 1 spring.
By Trade Tested on October 12 2020
See more questions and answers (1)

Reviews (83)

4.6 out of 5 stars from 83 reviews

Customer photos

Overall rating

  • 5 star
    72%
  • 4 star
    22%
  • 3 star
    1%
  • 2 star
    1%
  • 1 star
    4%
All reviews (83)

Read reviews that mention

  • opener work
  • once installed
  • screw supplied
Great little device

A little fiddley to install but once in, operate superbly. Looking to get another one now we know how good they are

Steve B Tauranga
Yes, I recommend this product.
every green Greenhouse Automatic Vent

The product arrived promptly. The new automatic opener fitted easily ,replacing old one ,operated efficiently and was nearly 1/2 the price of one previously purchased from a greenhouse manufacturer

Richard K 63 Queen Victoria Street Motueka
Yes, I recommend this product.
Evergreen Greenhouse Automatic Vent Opener

Instructions are not very good. Can not find anywhere how to stop them from opening if required, Seems like a good idea. Got 2 of them, only been on for 4 days so will see how they handle weather over time. Got them on with no problems.

Garry Otago
Yes, I recommend this product.
Automatic greenhouse vent opener

Easy to install, and easy to adjust. Needed two for my greenhouse in the Coromandel sun -- one vent wasn't enough without leaving the doors open.

Dave C Coromandel
Yes, I recommend this product.
Works well

We now have 2 of these in our greenhouse and they work very well. They help to regulate temperature and are often wide open on a sunny day. I would recommend these to anyone looking for help keeping their greenhouse at the right temperature.

Clive South Canterbury
Yes, I recommend this product.
It works a treat

this product is an absolute must have. It works a treat.

pc Bay of Plenty
Yes, I recommend this product.
Auto vent operator

They are great. They take the need away from having to open and close the door when l am not at home.

N J . Hastings
Yes, I recommend this product.
Auto window openers

Wounderful most impressed. Work amazingly.

Lindyloo Hawke's Bay
Yes, I recommend this product.
Evergreen Greenhouse Automatic Vent Opener

Initially ordered two for my 10' x 8' Greenhouse. They work a treat so I ordered a third - leaving one window to be manually operated. The third one came without the fixing screws and pins. Fortunately the initial order had extras. Recommend these for sure.

Graeme Auckland
Yes, I recommend this product.
Greenhouse auto vent opener

Very good easy to fit work great

Mal Paeroa
Yes, I recommend this product.

Related Categories

  • Call Us 0800 800 880

  • Contact Centre

    Our Contact Centre is open Monday to Saturday.

  • Locations

    Our Auckland Store and Christchurch Showroom are open Monday to Saturday.

    • Auckland Store
    • 80 Kahakaha Lane
    • Māngere
    • Auckland 2022
    • Christchurch Showroom
    • 9 Commerce Crescent
    • Islington
    • Christchurch 8042

  • Stay Updated

    Subscribe to the Trade Tested newsletter to receive updates on new products and promotions.

  • Google Review Widget

Payment

All prices are in NZD and include GST. We accept Visa, Mastercard, American Express, Apple Pay, Google Pay, bank transfer, Paypal and Afterpay. Credit card payments are fully secure. Payment methods.

  • visa
  • afterpay

  • Shipping

  • We use CourierPost, Fliway Transport, Team Global Express and Auckland Metro Freight. Shipping prices are shown on product pages and in the checkout.

© Copyright 2010-2025 Trade Tested Limited