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Best-rated Outdoor Window Cleaners in NZ

Simple Green logo
Consumer Ratingsstarstarstarstarstar
Wet and Forget logo
Consumer Ratingsstarstarstarstarstar
30 Seconds logo
Consumer Ratingsstarstarstarstarstar
MSC Outdoor Window Cleaners Award 2026

Most Satisfied Customers

Kiwis rate Simple Green the No.1 brand for keeping their windows crystal clear.

Simple Green logo

About Canstar's Most Satisfied Customers Outdoor Window Cleaners Award

Canstar's Most Satisfied Customers Outdoor Window Cleaners Award reveals the window cleaning brand that delivers the best consumer satisfaction to its customers.

We ask Kiwi Outdoor Window Cleaner users to rate their satisfaction with their choice of window cleaner brand by Overall Satisfaction, as well as important criteria such as Effectiveness, Ease of Use and Value for Money.


Numbers crunched by Canstar's researchers:

  • 274 Customers Surveyed
  • 6 Brands Assessed
  • 3 Brands Shortlisted
  • 1 Award Winner

Read our methodology


The best outdoor window cleaners in NZ

The brands rated are listed below in order of best overall satisfaction.

1. Simple Green

Simple Green logo

Simple Green has won two out of three of our most recent Outdoor Window Cleaners Awards. And this year it cements its position at the top of our award ratings with a perfect set of reviews from its customers, including for Effectiveness and Value for Money.

Notably, it's the only window cleaner brand in our ratings to achieve a 5-Star score. So if you're after clean windows, the answer is crystal clear: Simple Green.

To keep things simple, Simple Green has one outdoor window cleaner in its range: Hi-reach Exterior Window Cleaner, which promises a streak-free finish.

The hose-spray dispenser is powerful enough to reach second-storey windows and the formula is non-toxic and ammonia free.


2. Wet & Forget

Wet & Forget also has just one outdoor, window-cleaning product: Window Witch.

The product's cleaning ingredients dissolve grease and grime, while water softeners and a sheeting agent work to ensure a streak-free finish.

The product is available in a 2l hose-spray dispenser that provides an eight-metre reach and coverage for up to 600m² of glass.

Window Witch is also available in 2l refill packs.


3. 30 Seconds

30 Seconds Window Wonder Outdoor Glass Cleaner not only removes dust, grease and grime from glass, it's also suitable for other hard non-porous surfaces, such as stainless steel and chrome.

Key features include:

  • Hose-end applicator powerful enough to reach second-floor windows
  • No squeegeeing or scrubbing
  • Streak-free formula
  • Able to reach second-storey windows
  • Also available in 5l refill concentrate packs

Choosing the right outdoor window cleaner for you

It's as clear as sparkling glass that, when it comes to rating window cleaning products, one quality is paramount: their effectiveness.

In our survey, nearly half (46%) of respondents base their satisfaction with their choice of window cleaning product on how effectively it cleans.

As always, Value for Money is important, too – cited by nearly a quarter (24%) of those in our awards survey.

And, of course, Ease of Use is also an important factor, as spray applicators need to be easy to control and powerful enough to reach second-storey windows.

Here's the full rundown of what Kiwi consumers say are the main things they consider when rating their outdoor window cleaners:

  • Effectiveness: 46%
  • Value for Money: 24%
  • Ease of Use: 19%
  • Packaging: 11%

FAQs about Canstar's Outdoor Window Cleaners Award

Canstar's Most Satisfied Customers Awards recognise companies with the most satisfied customers, based on consumer surveys involving thousands of everyday Kiwis.

Canstar Blue surveyed 249 Kiwis who had purchased and used an outdoor window cleaner in the past 12 months and asked for their feedback on their window cleaner brands.

  • The outcomes reported in these ratings are measured via Pureprofile's accredited online research panel.


Respondents rate their satisfaction with their outdoor window cleaners from zero to ten, where zero is extremely dissatisfied and ten is extremely satisfied. Brand satisfaction was rated by respondents on the following criteria:

  • Overall satisfaction: measures consumer satisfaction with a provider as an individual score NOT a combined total of all criteria.
  • Effectiveness: the product effectively removes grime and build-up, without leaving water marks.
  • Ease of use: the window cleaner is straightforward and easy to apply.
  • Packaging: the packaging is informative and aids the cleaner's application.
  • Value for money: the cost is low for the quality and performance of the cleaner.

The winning brand receives the highest overall rating once all the scores from each category are combined and averaged.

Brands must have received at least 30 responses to be included, so not all brands available in the market have been compared in this survey. The brands rated in this survey are listed below in order of best overall satisfaction.

  • Simple Green
  • Wet & Forget
  • 30 Seconds

Find more information on our Most Satisfied Customer methodology.

The past winners of Canstar's Outdoor Window Cleaners Award

  • 2025: 30 Seconds
  • 2024: Simple Green
  • 2022: 30 Seconds
  • 2021: Wet & Forget

Canstar presents Most Satisfied Customer Awards for products and services across a range of consumer categories. Canstar's expert research team also awards financial products and providers that deliver outstanding features, service and value for money. Canstar's Innovation Excellence Awards showcase products and services that break new ground when it comes to helping Kiwi consumers.

You can find the full list of Canstar's Awards and Star Ratings here.


Bruce Pitchers is Canstar's NZ Editor. An experienced finance reporter, he has three decades’ experience as a journalist and has worked for major media companies in Australia, the UK and NZ, including ACP, Are Media, Bauer Media Group, Fairfax, Pacific Magazines, News Corp and TVNZ. As a freelancer, he has worked for The Australian Financial Review, the NZ Financial Markets Authority and major banks and investment companies on both sides of the Tasman.
In his role at Canstar, he has been a regular commentator in the NZ media, including on the Driven, Stuff and One Roof websites, the NZ Herald, Radio NZ, and Newstalk ZB.
Away from Canstar, Bruce creates puzzles for magazines including Woman’s Day and New Idea. He is also the co-author of the murder-mystery puzzle book 5 Minute Murder.


Important Information

For those that love the detail

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