The Roomba i4 and i3 are two popular models from iRobot’s i-Series of robotic vacuums, designed to offer efficient cleaning at a more affordable price point compared to their higher-end counterparts. While they share many similarities, there are key differences that set these two models apart in terms of performance, features, and usability. In this detailed comparison, we’ll explore the design, cleaning efficiency, smart features, and other important aspects to help you choose the right model for your home.
Design and Build Quality
Size, Weight, and Appearance
Both the Roomba i4 and i3 share the same compact, circular design with a sleek black finish, which allows them to easily glide under furniture and clean tight spaces. They are similar in terms of size and weight, with minimal design differences. The i4 is slightly more refined in terms of overall build, but both vacuums are sturdy and well-constructed.
| Feature | Roomba i4 | Roomba i3 |
|---|---|---|
| Dimensions | 13.34 x 3.63 inches | 13.26 x 3.63 inches |
| Weight | 7.44 lbs | 7.44 lbs |
| Finish | Black | Black |
Both models have a similar size and weight, making them easy to maneuver and store in small spaces. The design of both the i4 and i3 is minimalistic, with no frills but effective in delivering strong cleaning performance.
Cleaning Performance
Suction Power and Brush System
The Roomba i4 and i3 are equipped with the same AeroForce® 3-Stage Cleaning System, which includes dual multi-surface brushes, strong suction, and a high-efficiency filter. This system allows both models to clean a variety of surfaces, from hardwood floors to low-pile carpets.
| Cleaning Aspect | Roomba i4 | Roomba i3 |
|---|---|---|
| Suction Power | High | High |
| Brush System | AeroForce® Dual Brushes | AeroForce® Dual Brushes |
Both models offer solid suction power, but neither surpasses the more advanced models in terms of sheer strength. However, both are well-suited for day-to-day cleaning in most homes.
Performance on Various Surfaces
| Surface Type | Roomba i4 Performance | Roomba i3 Performance |
|---|---|---|
| Hardwood Floors | Excellent | Excellent |
| Low-Pile Carpets | Excellent | Excellent |
| High-Pile Carpets | Good | Good |
The i4 and i3 perform equally well on hardwood floors and low-pile carpets. They both struggle slightly on high-pile carpets, but this is common in most entry-level robotic vacuums. For users with medium to low pile carpets, both will work efficiently.
Navigation and Mapping
iAdapt 2.0 Navigation
Both the Roomba i4 and i3 are equipped with the iAdapt® 2.0 Navigation system, which ensures efficient coverage by guiding the vacuum in a systematic cleaning pattern. Both models are effective at cleaning rooms from corner to corner, though they do not have advanced mapping features like higher-end models (e.g., Roomba i7+).
| Navigation Feature | Roomba i4 | Roomba i3 |
|---|---|---|
| Navigation System | iAdapt® 2.0 | iAdapt® 2.0 |
| Cleaning Pattern | Systematic | Systematic |
Neither the i4 nor the i3 uses smart mapping, meaning that they clean randomly within a room. The iAdapt 2.0 system helps them navigate around obstacles and walls, but they don’t map out the layout of your home or allow for room-specific cleaning.
Battery Life and Runtime
Runtime and Recharge Features
Both the Roomba i4 and i3 offer up to 90 minutes of cleaning time per charge. When their battery runs low, they will return to their charging dock, recharge, and resume cleaning where they left off.
| Battery Aspect | Roomba i4 | Roomba i3 |
|---|---|---|
| Runtime | ~90 minutes | ~90 minutes |
| Recharge and Resume | Yes | Yes |
Both vacuums offer similar runtime and the “Recharge and Resume” feature, making them suitable for smaller to medium-sized homes. However, their battery life may be insufficient for larger homes, requiring multiple cleaning cycles.
Smart Features
Wi-Fi Connectivity and Voice Control
Both the Roomba i4 and i3 offer Wi-Fi connectivity, allowing users to control the vacuum through the iRobot Home app. This gives you the ability to schedule cleanings, monitor progress, and customize settings remotely. Additionally, both models are compatible with Amazon Alexa and Google Assistant, enabling voice control.
| Feature | Roomba i4 | Roomba i3 |
|---|---|---|
| Wi-Fi Compatibility | Yes | Yes |
| App Control | Yes | Yes |
| Voice Commands | Alexa/Google | Alexa/Google |
Both vacuums offer similar app and voice control functionality, giving you the convenience of scheduling and controlling the vacuum remotely. There are no significant differences in this regard between the i4 and i3.
Maintenance and Accessories
Dustbin Capacity and Filter System
The Roomba i4 and i3 both feature a 600 ml dustbin, which is large enough for typical cleaning sessions. Both vacuums use a high-efficiency filter to trap dust, dirt, and allergens, making them suitable for allergy sufferers.
| Maintenance Aspect | Roomba i4 | Roomba i3 |
|---|---|---|
| Dustbin Capacity | 600 ml | 600 ml |
| Filter Type | High-Efficiency | High-Efficiency |
Both models require similar maintenance, including regular emptying of the dustbin and occasional filter replacement. The dustbin size is sufficient for cleaning most rooms in one session, and both filters are effective at capturing allergens.
Price and Value
| Aspect | Roomba i4 | Roomba i3 |
|---|---|---|
| Price Range | Moderate | Moderate |
| Value for Money | Excellent | Excellent |
Both the Roomba i4 and i3 offer great value for money, providing solid performance at a mid-range price. The i4 may offer a slight edge in terms of design refinement, but the i3 is equally reliable in terms of performance and usability.
Who Should Choose Which?
| User Type | Recommended Model |
|---|---|
| Budget-Conscious | Roomba i4 |
| Small to Medium Homes | Roomba i3 |
| Homes with Pets | Roomba i4 |
| General Cleaners | Roomba i3 |
Final Verdict
The Roomba i4 and i3 are both excellent robotic vacuums that offer great cleaning performance at a moderate price. The main differences lie in their design and the slight refinement in the i4’s overall build. However, both models perform similarly on most surfaces, offering solid suction and an effective cleaning system.
- Choose the Roomba i4 if you are looking for a slightly more refined design and reliable performance at a reasonable price. It’s great for homes with pets or smaller spaces.
- Opt for the Roomba i3 if you need a dependable robotic vacuum that offers solid cleaning performance at a budget-friendly price. It’s ideal for general cleaning in small to medium homes.
Both vacuums offer good value for the price, and your choice will largely depend on which design and features best suit your needs.