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iRobot Roomba i3 vs. i4 Robot Vacuums

Both the Roomba i3 and i4 robot vacuums are well-known wonders that can help you keep your home clean and tidy whether you need a strong, powerful clean or just need to pick up a few crumbs that have been left behind after dinner.

But which one is worth your hard-earned money? We’re here to give you the details on both robot vacuums, so you don’t have to make the decision alone.

iRobot Roomba i3 (3150) Wi-Fi Connected Robot Vacuum Vacuum
iRobot Roomba i3

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iRobot Roomba i3 Robot Vacuum

Let’s begin with the iRobot Roomba i3 Robot Vacuum, which weighs just 11.4lbs and runs off of its incredible long-lasting lithium ion battery to provide you with the longevity and power for a great clean every time.

iRobot Roomba i3 vs. i4 Robot Vacuums
iRobot Roomba i3

With 10X the powerlifting suction of other Roombas and a 3-stage, premium cleaning system, even stubborn dirt left behind in high traffic areas and dirt spots left behind by pets will be sucked clean immediately, leaving you with sparkling floors.

In fact, its unique multi-surface rubber brushes are quick to wipe away dirt and don’t get tangled with your pet’s hair, making them the perfect addition for a quick clean.

That’s not all the i3 has to offer, though. With Imprint Link Tech and its accompanying Braava jet m6 robot mop, your floors won’t only be “swept to perfection,” but they’ll be mopped to perfection too, leaving you to spend time on more important matters.

The Roomba i3 is equipped with an ultra-smart navigation system that maps your home and cleans in neat rows. All thanks to its tracking sensors that know the difference between your hard floors and carpets.

With extra Reactive Sensor Tech, the i3 knows where it will and won’t fit, so you’ll never have to retrieve it from a tight corner or save it from an edge that could damage it.

iRobot Roomba i3 (3150) Wi-Fi Connected Robot Vacuum Vacuum Review
iRobot Roomba i4

As with most robot vacuums nowadays, there’s a handy smartphone app to download to help you keep on top of the i3’s tasks without having to be in the vicinity. Use either the app or your voice assistant to personalize your Roomba’s schedules and let it take care of the rest.

Difference Between the Roomba i3 (3150) and the i4 (4150): Chart

iRobot Roomba i3 (3150) Wi-Fi Connected Robot Vacuum Vacuum - Wi-Fi Connected Mapping, Works with Alexa, Ideal for Pet Hair, CarpetsiRobot Roomba i4 (4150)
Wi-Fi® Connected Robot Vacuum
Virtual WallNone1
Extra High-Efficiency Filter12
AA batteries IncludedNone2
Warranty1 year2 years

iRobot Roomba i4 Robot Vacuum

The Roomba i4 is similar in almost every way to the i3. It has the same 3-stage premium cleaning system and rubber brushes, 10X the power of other robot vacuums on the market, and even the same Braava jet m6 robot mop to help simultaneously sweep and mop your floors to a sparkling finish.

iRobot Roomba i3 vs. i4
iRobot Roomba i4

It’ll navigate your home in neat rows, thanks to its expert navigation system. This system will also stop the robot vacuum from getting caught in those pesky corners.

Related Post: Roomba iSeries Comparison

Roomba i4+ Introduction Video

So What are the Differences Between Each Model?

Well, for starters, the Roomba i4 comes with two extra filters.

These filters are perfect for households with members who suffer from allergies and want a fresher atmosphere. It’s also even better for pet owners who don’t want their pet’s odors lingering throughout the house.

The i4 also comes with a virtual wall and a two-year warranty.

One Last Thing

It’s important to note that there is an extra accessory that can be bought for the Roomba i3: the cleaning base. This cleaning base is the perfect addition for you if you want to forget about vacuuming completely for a few weeks at a time.

It’ll take care of the i3’s dust cup so you don’t have to empty it for up to 90 days, and it’ll keep your i3 out of the way but ready to go.

The base isn’t included in the price though, so it’s an extra that you’ll be paying more for. Whilst it’s a handy extra to have, it’s not the most cost effective addition. This leaves it to be a completely personal choice at the end of the day.

iRobot Roomba E5 (5150) Robot Vacuum - Wi-Fi...
  • Powerful: Power-Lifting Suction delivers 5x the air power
  • Smart: Amazon Alexa and Google Assistant compatible

Related Post: iRobot Roomba i3+ (3550) Robot Vacuum


Both Roombas are incredibly nimble and hard-working. They’re the perfect addition to any home that wants a quick and easy solution to vacuuming.

Both robot vacuums are essentially the same. In our opinion it’s not worth spending some extra bucks on an extra filter or AA batteries. You’ll get an amazing clean no matter which you choose though, which is the important thing.

iRobot Roomba i3 EVO (3150) Wi-Fi Connected...
  • POWERFUL CLEANING—SCHEDULED AROUND YOUR LIFE - Whether you’re relaxing at home or out...
  • CLEAN BY ROOM, YOU’RE IN CONTROL - Roomba i3 EVO learns your home and creates an Imprint...

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Affordable Option The iRobot Roomba 694 is a basic robot vacuum. It feels well-built, offers fantastic battery performance, and can adjust its suction power and brushroll height automatically depending on the surface that it's on.

Best of the Best The Roborock S7+ can vacuum and mop, and does an excellent job at both. It's also the company's most powerful vacuum yet, with 2,500Pa of suction.

Popular Option The Shark AV911S EZ is one of the least expensive robot vacuum with self-empty base. The bagless, self-emptying base holds up to 30 days of dirt and debris.

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Last Update: 2024-05-13 | Affiliate links/Images from Amazon Product Advertising API

About the author

Hi I’m Alex, founder of HouseholdMe.com and I’d like to say thank you for dropping by. Like most of you, the first thing I look at before buying something online is reviews or buying guides. By reading what other people say will help me gauge whether or not a product is good or not.  I am trying to help people find answers, solve problems, and get inspired.

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