Mueller M99S Ultra Electric Kettle Review

Mueller M99S Ultra is electric kettle with 1.8 liter capacity and 1500 watt heating element.


Full pot takes 6-8 minutes to boil. Most similarly priced electric kettles have 1500 watt heating element (same as Mueller M99S Ultra) so they all heat up water in about the same time. If you fill it up only halfway it will heat up water significantly faster.

Mueller M99S Ultra holds a bit more water than most kettles as they typically have 1.5 to 1.7 liter capacity instead of 1.8 liters. This means you will have to refill it less often however you won’t really benefit from extra capacity if you don’t plan to fill it to the maximum capacity to decrease heat up time.

Mueller M99S Ultra pours without dripping. It performs just like you would expect for a typical electric kettles to perform.

Water Level Indicator

Mueller M99S Ultra has 3 volume imprints on the glass pot: 0.5 liters (min), 1.0 liters and 1.8 liters (max). Since the pot is entirely made of glass they are easy to read. Imprints are on both sides so you can read them while holding the kettle in either hand.


Mueller M99S Ultra is a fairly attractive unit. The body is made of 304 stainless steel and thermoplastic resin (heat resistant copolyester) whereas pot itself is borosilicate glass. Like many modern electric kettles this one also has beautiful LED strip around the base of the glass pot that illuminates when water is being heated.


Mueller M99S Ultra electric kettle has auto shut-off feature, heat-resistant anti-slip grip handle, 360° rotational base and cordless pouring – all pretty standard for a modern kettle.

Possible issues

Despite most of the consumer feedback being positive as with any product some have experienced some things to complain about too.

From those who complained the most common issues were: rust spots, water leakage and the kettle only lasting few years.

Those complaints might seem alarming to you however it’s important to understand that large majority of consumers are satisfied with this model and have not reported any issues.


Mueller M99S Ultra is a fairly standard electric kettle which is not a bad thing – it works well, has all the features you would expect at this price and is quite affordable too. It’s quite similar to a lot of other models that cost similar amount of money so it doesn’t really stand out in the midst of competition but it’s not a bad choice by any means.

Mueller Ultra (Model No. M99S) 1500W Electric Kettle Specifications:

  • Voltage: 120V
  • Power: 1500W
  • Capacity: 1.8 liters
  • Materials: 304 stainless steel + heat resistant copolyester (thermoplastic resin) + borosilicate glass

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