The Bissell Little Green and Little Green Pet Pro are easy to confuse because both are corded portable spot cleaners for carpet, upholstery, and similar soft surfaces. They are not the same machine, and this comparison is deliberately narrow: it covers the current Little Green 1400B and Little Green Pet Pro 3909 listed on Bissell’s US site. It does not treat the Mini, Max Pet, HydroSteam, Auto Pro, or a retailer-specific bundle as interchangeable versions.
For a small home, the useful question is not which name sounds more powerful. It is whether the extra tool set, larger stated tank setup, and slightly longer hose of the Pet Pro will improve your actual stain-cleaning routine enough to justify storing and carrying the larger machine. Neither model is a replacement for a full-size carpet cleaner when you need to wash an entire room.
Quick Answer
Choose the Little Green 1400B when you want the lighter, more basic corded spot cleaner for occasional spills on rugs, upholstery, stairs, or car interiors. Bissell lists it at 9.65 lb, with a 15 ft power cord, a 4.5 ft hose, and a stated 48 oz tank capacity.
Choose the Little Green Pet Pro 3909 when pet hair, larger recurring messes, or tight upholstery seams are part of the job. Bissell lists a 15 ft cord, a 5 ft hose, an 11 lb carry weight, an XL tank setup, and a pet-oriented tool set. It is still corded and still needs to be emptied, rinsed, and stored after use.
The Pet Pro is not automatically the better choice for every apartment. The 1400B is about 1.35 lb lighter, and the difference only matters when the Pet Pro’s added reach and tools solve a problem you actually have.
The Exact Models Compared
| Detail | Little Green 1400B | Little Green Pet Pro 3909 |
|---|---|---|
| Official product name | Little Green Portable Carpet Cleaner | Little Green Pet Pro Portable Carpet Cleaner |
| Carry weight | 9.65 lb | 11 lb |
| Power | Corded, 3 A listed by Bissell | Corded |
| Power-cord length | 15 ft | 15 ft |
| Hose length | 4.5 ft | 5 ft |
| Tank language on current Bissell page | 48 oz tank capacity | XL tank capacity |
| Included tools called out by Bissell | Spraying Crevice Tool, 3-inch Tough Stain Tool, HydroRinse Self-Cleaning Hose Tool | Spraying Crevice Tool, Pet Hair Removal Tool, Self-Cleaning Tough Stain Tool |
| Coverage stated by Bissell | Carpet, upholstery, area rugs, and auto interiors | Carpet, upholstery, rugs, and other soft surfaces |
Product listings and bundles change. Check the model number on the current product page before treating a tool or formula bottle as included. The Pet Pro’s official page uses “XL tank capacity” but does not present a stable numeric capacity in the public product text reviewed for this guide, so this article does not invent a number.
What Changes in a Small-Space Routine
Storage and carrying
Neither cleaner is a tiny handheld appliance. You need a shelf or closet location for the machine, hose, tools, formula, and a place to empty the dirty tank without carrying it through the apartment. The 1400B’s lower listed carry weight is its clearest practical advantage when the machine will be carried up stairs or stored on a high shelf.
The Pet Pro is only 1.35 lb heavier on Bissell’s listed weights, so weight alone is not a reason to avoid it. Measure the storage space with the hose and tools accounted for. A body measurement from a retailer box is not enough when the tool tray, cord, and hose are the parts that make the stored package awkward.
Reach and setup
Both machines have a 15 ft power cord. The Pet Pro adds a half foot of hose reach, which can be useful for cushion corners, stairs, car seats, or reaching around a piece of furniture. It does not turn the machine into a whole-room cleaner, and it does not remove the need to place the base near an outlet.
Do not plan on an extension cord unless the current owner documentation specifically permits the setup. The safer small-space workflow is to choose the nearest suitable outlet, keep the cord out of a wet path, and make sure the machine can sit level while you use the hose.
Tools and the type of mess
The 1400B ships with a 3-inch tough-stain tool, a crevice tool, and Bissell’s HydroRinse self-cleaning hose tool. That is a sensible set for ordinary drink spills, muddy marks, fabric furniture, or a small rug spot.
The Pet Pro changes the emphasis rather than the basic cleaning method. Its Pet Hair Removal Tool is meant to help lift embedded hair from soft surfaces, while its spraying crevice tool targets tight seams and its self-cleaning tough-stain tool is intended to flush residue from the hose and tool after a session. Those are worthwhile upgrades for repeated pet-related messes; they add less value when you only clean an occasional small spill.
Tank and emptying work
The 1400B’s product page lists a 48 oz tank capacity. Bissell describes the Pet Pro as having an XL tank setup, but tank labels do not eliminate maintenance. Both machines use separate clean- and dirty-water handling, so you still need to prepare cleaning solution, empty dirty water after use, and rinse the components as directed by the owner guide.
Do not choose on tank language alone. A larger stated setup can reduce interruptions during a longer session, but it also leaves more water to carry, empty, and dry before the cleaner goes back into storage.
When the 1400B Is the Better Fit
The Little Green 1400B is the more sensible choice when these points describe your routine:
- You need a portable cleaner for occasional isolated stains, not frequent pet cleanup.
- You value the lower listed
9.65 lbcarry weight. - A
4.5 fthose and basic stain, crevice, and hose-rinse tools cover the surfaces you actually clean. - You want the simpler option to store with a small bottle of formula and the included tools.
It is not a weak choice because it lacks the Pet Pro name. Bissell lists it for the same broad category of carpet, upholstery, area-rug, and auto-interior spot cleaning. The limitation is that it does not include the Pet Pro’s dedicated hair-removal tool or its extra half foot of hose reach.
When the Pet Pro 3909 Is Worth the Upgrade
The Little Green Pet Pro 3909 is the better fit when these points describe the actual problem:
- Pet hair is embedded in upholstery, pet beds, or car seats.
- You regularly clean more than a quick drink spill and want Bissell’s XL tank setup.
- The 5-foot hose is useful in the places you clean most often.
- Its pet-hair, crevice, and self-cleaning stain tools solve specific recurring tasks.
Bissell describes the Pet Pro as having its strongest suction versus leading portable competition, based on a sealed-suction test at the hose. Treat that as the manufacturer’s comparative claim, not as independent proof that every stain will come out better. Stain age, fabric type, cleaning formula, and how thoroughly the area is dried still affect the result.
What Neither One Solves
Neither product should be bought on the assumption that it can deep-clean an entire wall-to-wall carpet like an upright carpet cleaner. They are designed for spot work on compatible soft surfaces.
They also do not remove the need for a dry vacuum when the surface has loose solids, hair, or debris. Bissell’s getting-started guidance tells users to remove solids with a dry vacuum before using a portable carpet and upholstery cleaner. Test a hidden area and follow the care label and current product instructions before applying cleaning solution to delicate, color-sensitive, or water-sensitive fabrics.
Maintenance, Power, and Warranty Checks
Before buying either model, use the current official product page and owner guide to confirm these practical details:
- Power: Both compared models are corded. The 1400B is listed at
3 A; the Pet Pro page confirms a corded setup with a15 ftcord. - Hose and tool cleanup: Empty the dirty tank and clean the tool and hose route after use. Both product pages include a self-cleaning hose or tool feature, but it does not replace routine rinsing and drying.
- Formula: Use only a formula and dilution method approved for the machine and surface. Do not treat the included trial bottle as a lifetime supply.
- Warranty: Bissell links each model to its warranty information. Coverage can depend on the model, country, seller, and proof of purchase, so verify the current warranty guide tied to the exact model before ordering.
- Storage: Do not store the machine with dirty water left in it. Let cleaned components dry as instructed before closing it into a small cabinet or closet.
FAQ
Is the Little Green Pet Pro much bigger than the Little Green?
The official listed carry weights are 11 lb for the Pet Pro 3909 and 9.65 lb for the 1400B. The Pet Pro also has a 5-foot hose versus 4.5 feet for the 1400B. Those differences are real but modest; tool storage and the tank-cleaning routine matter more than the headline weight difference in a small home.
Does the Little Green Pet Pro replace a full-size carpet cleaner?
No. It is a portable spot cleaner for compatible carpets, upholstery, rugs, and similar soft surfaces. It can be useful for recurring local messes, but it is not the appropriate category for washing an entire room of carpet.
Is the Pet Pro only for homes with pets?
No. Its pet-focused tools can also be useful for hair and stains on upholstered furniture or car interiors. The extra tools are most worthwhile when those jobs are recurring; otherwise the 1400B may be enough.
Which model is easier to maintain?
Neither is maintenance-free. Both require dirty-water disposal, rinsing, and drying after use. The Pet Pro’s self-cleaning stain tool and the 1400B’s HydroRinse tool can help with the hose route, but they do not eliminate the need to follow the owner guide.
Bottom Line
Choose the Bissell Little Green 1400B for a lighter basic spot cleaner when occasional spills are the job. Choose the Little Green Pet Pro 3909 when recurring pet hair, upholstery seams, a longer hose, and its specialized tools justify the added size and weight.
For both models, the practical purchase test is simple: confirm the exact model number, measure the storage spot, plan where dirty water will be emptied, and make sure the machine’s tools match the stains you actually clean. That is more useful than assuming every Little Green model is the same.
