The Bissell Little Green 1400B vs Little Green Pet Pro 3909 decision is mainly about four practical differences: carry weight, hose reach, included tools, and the size of the cleaning session you repeat most often. Choose the lighter 1400B for occasional stains and basic spot cleaning. Choose the Pet Pro when pet hair, recurring messes, upholstery seams, and its specialized tools are part of the job. This guide compares the current models 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.
If you are comparing Bissell 3908 vs 3909 retailer listings, Bissell groups those Little Green Pet Pro numbers under the same support location, but a model number alone does not prove that two listings include the same tools, formula, color, price, or warranty. Confirm the exact bundle before treating 3908 and 3909 as identical.
Bissell 3908 vs 3909: What to Confirm First
Bissell’s support center places Pet Pro 3908 and 3909 under the same user-guide location. The current US product page reviewed for this article is identified as 3909. That is useful confirmation that the two numbers are related Pet Pro listings, but it is not evidence that every store package is identical.
Before ordering, match the retailer’s model number to Bissell’s current product or support page. Then check the included tools, formula, color, price, and warranty attached to that exact listing. The published measurements and tool details below refer specifically to the Little Green 1400B and Little Green Pet Pro 3909; the comparison does not invent unverified 3908-versus-3909 specification differences.
| What a 3908 vs 3909 listing tells you | What it does not tell you |
|---|---|
| Bissell groups both numbers in the same Pet Pro support location. | That every 3908 and 3909 retailer bundle has identical tools, formula, color, price, or warranty. |
| The current Bissell US Pet Pro product page used here is model 3909. | A universal model-number-only difference in weight, tank capacity, hose reach, or cleaning performance. |
| A retailer listing gives you a specific package to verify before buying. | That an AI summary, old listing, or another seller’s box contents apply to the listing in your cart. |
For a small home, the useful question is not which name sounds more powerful. It is whether the pet-focused tools, larger clean tank, and longer listed hose of the Pet Pro will improve your actual stain-cleaning routine enough to justify carrying the heavier machine. Neither model is a replacement for a full-size carpet cleaner when you need to wash an entire room.
Quick Answer: Little Green 1400B vs Pet Pro 3909
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 and a 48 oz clean tank. Its official page gives conflicting hose lengths: 4.5 ft in the introduction and 4 ft in the specifications.
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 product weight, a 64 oz clean tank, a 48 oz dirty tank, 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 1.35 lb lighter on the listed product weights. The Pet Pro’s larger clean tank, added reach, and pet-focused tools are reasons to accept that extra weight only when they solve a problem you actually have.
What Actually Differs Between the Little Green and Pet Pro?
Both models are corded portable spot cleaners with a 15 ft power cord. Neither is a whole-room carpet cleaner or maintenance-free. The useful buying differences are below.
| Purchase difference | Little Green 1400B | Little Green Pet Pro 3909 | Why it matters |
|---|---|---|---|
| Carrying and storage | 9.65 lb listed product weight | 11 lb listed product weight | The lighter 1400B can be easier to carry; water and accessories add to either load, and weight does not establish storage dimensions. |
| Hose reach | Official copy says 4.5 ft; specifications say 4 ft | 5 ft | The Pet Pro is longer on either published figure, but confirm the 1400B length before planning reach around furniture. |
| Included tools | 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 | The Pet Pro’s extra value is concentrated in recurring hair and tight-seam cleanup, not in ordinary one-off spills. |
| Tank information | 48 oz clean tank; dirty capacity not separately listed | 64 oz clean tank; 48 oz dirty tank | The Pet Pro holds more cleaning solution per fill; an equivalent dirty-tank comparison is not supported by the 1400B listing. |
| 3908 retailer listing | Verify the package against its seller’s exact listing. | Verify the package against Bissell’s current 3909 page and support documentation. | Shared support documentation is not proof that two retailer bundles contain the same extras. |
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 |
| Listed product 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 in official copy; 4 ft in specifications | 5 ft |
| Clean-water tank | 48 oz | 64 oz |
| Dirty-water tank | Not separately listed on the current product page | 48 oz |
| 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. Bissell now separately lists the 3909’s clean and dirty capacities; those figures should not be copied to an unverified 3908 retailer bundle. The 1400B’s 48 oz figure refers to its clean tank, not both tanks.
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’s 5 ft hose is longer than either figure on the 1400B page, but that page’s 4.5 ft versus 4 ft conflict prevents a single confirmed difference. Check with Bissell if that reach determines your purchase. Neither machine becomes a whole-room cleaner, and both still need a suitable base location 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 has a 48 oz clean tank. The Pet Pro 3909’s official specifications list a 64 oz clean tank and a 48 oz dirty tank. That is 16 oz more clean capacity than the 1400B, not proof of a larger recovery tank: the current 1400B page does not separately publish its dirty-water capacity.
More solution per fill may reduce refilling during a longer local session, but it does not guarantee proportionally more cleaning time or area. Follow each manual’s fill and emptying instructions rather than adding clean and dirty capacities together. Both machines still need dirty-water disposal, rinsing, and drying; carrying more water also increases the load.
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. - You have confirmed the hose reach you need, 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 tradeoffs are a smaller clean tank, no dedicated pet-hair-removal tool, and a shorter listed hose, with the exact 1400B length still needing confirmation.
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 several local spots and value the
64 ozclean tank rather than the 1400B’s48 ozclean tank. - 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 Pet Pro 3909 is heavier on the listed product weights (11 lb versus 9.65 lb) and has a larger clean tank (64 oz versus 48 oz). Neither difference establishes the cabinet space it needs. The current official product pages do not provide comparable dimensions, so confirm the footprint and allow room for the hose, tools, and drying parts before ordering.
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.
What is the actual difference between Bissell 3908 and 3909?
Bissell groups both 3908 and 3909 under the same Little Green Pet Pro user manual and technical platform. The practical difference usually comes down to retailer-specific packaging, included accessory bundles, or trial formula bottles rather than motor performance or base machine build. Always check the exact tool list on your specific retailer listing before purchasing.
Does the Pet Pro have more suction power than the standard Little Green?
Bissell cites stronger hose-end suction for the Pet Pro based on sealed-suction tests. In daily use across apartments, however, the biggest cleaning difference comes from the Pet Pro’s specialized pet-hair removal tool and larger 64 oz clean-water tank (versus 48 oz on the 1400B), which allow you to scrub deeper into upholstery fibers and work longer without pausing to refill.
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 its larger clean tank, pet-focused tools, and longer listed hose justify the extra carrying weight for recurring cleanup.
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.
For a cross-brand decision, see Bissell Little Green vs Hoover CleanSlate Pet. It compares the 1400B with Hoover’s CleanSlate Pet FH14000V, including their published tank information, hose reach, supplied tools, and maintenance routine.
If you are deciding between the standard Little Green and Bissell’s other pet-focused role, see Bissell Little Green vs Little Green Max Pet. It compares the 1400B with the Max Pet 3860, including their tank setup, tools, warranty, and storage considerations.
If the standard 1400B is already out of the running and you are choosing between Bissell’s two pet-focused versions, see Bissell Little Green Max Pet vs Pet Pro. It compares the 3860 and 3909 by published weight, tank information, hose reach, and the tools that affect tight upholstery cleanup.
If the question is whether steam modes are more useful than the Pet Pro’s pet-focused tools, see Little Green HydroSteam vs Pet Pro. It compares the HydroSteam 3618 and Pet Pro 3909 by cleaning modes, compatible-surface boundaries, tools, maintenance, and storage.
For a wider shortlist that includes both Little Green roles alongside other options, see our best portable spot cleaners for small apartments.
