The main difference between the Bissell Little Green 1400B and Little Green Max Pet 3860 is a tradeoff: the 1400B has a larger 48 oz clean-water tank and a spraying crevice tool; the 3860 has a smaller 32 oz clean tank, pet-focused tools, and lower listed weight (8.2 lb versus 9.65 lb). “Max” does not mean a bigger tank, and Bissell’s advertised suction comparison is not against the 1400B.
This guide compares those two US models only, not the Pet Pro, SmartMix, HydroSteam, Mini, or retailer-specific bundles. If you meant the smaller 4075, use the dedicated Bissell Little Green Mini 4075 vs Max Pet 3860 comparison instead. For a small home, choose around the surfaces and tools you actually use, not a presumed upgrade in every specification. Neither machine replaces a full-size cleaner for washing an entire room of wall-to-wall carpet.
Quick Answer
Choose the Little Green 1400B when you want a straightforward spot cleaner for occasional spills, rugs, upholstery, stairs, and car interiors. Bissell lists it at 9.65 lb, with a 15 ft power cord, a 48 oz clean tank, and three included tools.
Choose the Little Green Max Pet 3860 when pet messes, hair on soft surfaces, and more regular cleanup are the actual job. Bissell lists separate 32 oz clean- and dirty-water tanks, a 15 ft cord, a 4.8 ft hose, a Pet Hair Removal Tool, and a Self-Cleaning Tough Stain Tool.
Already own a working 1400B? Keep it if it handles your usual stains. Consider the 3860 when its pet-hair tool or lower listed weight solves a recurring problem, not simply because its name says “Max.”
Exact Models Compared
| Detail | Little Green 1400B | Little Green Max Pet 3860 |
|---|---|---|
| Official product name | Little Green Portable Carpet & Upholstery Cleaner | Little Green Max Pet Portable Carpet Cleaner |
| Listed product weight | 9.65 lb | 8.2 lb |
| Product dimensions | Not published on the current official product page reviewed for this guide | Not published on the current official product page reviewed for this guide |
| Power source | Corded, 3 A listed by Bissell | Corded |
| Power-cord length | 15 ft | 15 ft |
| Hose length | Bissell’s product copy says 4.5 ft; its expanded specifications say 4 ft | 4.8 ft |
| Clean-water tank | 48 oz | 32 oz |
| Dirty-water tank | No separate public capacity listed on the current official product page | 32 oz |
| Included tools called out by Bissell | Spraying Crevice Tool, 3-inch Tough Stain Tool, HydroRinse Self-Cleaning Hose Tool | Specialized Pet Hair Removal Tool, Self-Cleaning Tough Stain Tool |
| Warranty guide linked by Bissell | 1-year limited warranty | 3-year limited warranty |
Product listings, included formula bottles, and colors can change. Confirm the exact model number and included items on the current official or retailer listing before ordering. This is especially important for the 1400B: Bissell currently uses two hose-length descriptions on the same product page, so this guide does not hide that conflict behind a single rounded number.
What Actually Changes Between the 1400B and 3860
Tank setup and the cleanup session
The 1400B page publicly lists a 48 oz clean tank and describes the machine as having large dual tanks. It does not separately state a dirty-tank capacity in the public specifications reviewed here. That means it would be inaccurate to turn the 48 oz figure into a claimed capacity for both tanks.
The 3860 has a 32 oz clean tank and a 32 oz dirty tank. Its clean tank is therefore smaller, not an upgrade in capacity. The 1400B holds more cleaning solution per fill; that alone does not establish how much fabric either machine can clean before you must stop, refill, or empty recovered water.
Do not choose only by the largest number in a listing. The better fit is the machine whose tank arrangement and cleanup routine you will realistically maintain. A portable cleaner left with dirty water or damp tools in a small closet is not a convenient appliance.
Tools and the type of mess
The 1400B includes a 3-inch Tough Stain Tool, a Spraying Crevice Tool, and Bissell’s HydroRinse Self-Cleaning Hose Tool. That is a useful set for an isolated drink spill, tracked-in dirt, a small rug mark, furniture seams, or car upholstery.
The 3860 shifts the emphasis toward recurring pet cleanup. Bissell identifies a Specialized Pet Hair Removal Tool and a Self-Cleaning Tough Stain Tool. The hair-removal tool is the concrete reason to consider the Max Pet when loose or embedded hair on upholstery, pet beds, or vehicle fabric is part of the job. It adds less value when your only use is an occasional small spill.
The self-cleaning names on both machines should be read as cleanup aids, not a promise of zero maintenance. Use the current owner guide for the exact rinsing, tank-emptying, and drying steps for the model you own.
Reach, power, and placement
Both machines have a 15 ft power cord, so outlet placement still controls where the base can sit. The 3860’s official specification lists a 4.8 ft hose. For the 1400B, Bissell’s product description says 4.5 ft, while its expanded specification panel says 4 ft. Plan conservatively if hose reach is the deciding factor, and verify the current documentation before buying for a specific stair, car, or sofa location.
Neither page provides a reliable published product footprint for small-cabinet planning. Measure the shelf or closet before ordering, then confirm the current dimensions with the seller or Bissell if storage is tight. Leave room for the hose, cord, tools, cleaning formula, and for the cleaned components to dry.
Performance language needs context
Bissell describes the 3860 as having “30% more powerful suction” than the Shark StainStriker, based on an ASTM F558 average peak-air-power test through the hose with the connector covered. That is a manufacturer comparison to a different product, not a tested 3860-versus-1400B result.
The safer conclusion is simpler: both are portable spot-cleaner roles for compatible carpets, rugs, upholstery, stairs, pet beds, and auto interiors. Stain age, fabric care instructions, cleaning formula, and drying conditions still affect the outcome. Test a hidden area and follow the surface-care label and owner documentation.
When the Little Green 1400B Is the Better Fit
The 1400B is the more practical option when these points describe your routine:
- You need a corded cleaner for occasional local spills rather than regular pet cleanup.
- You value the larger clean tank and included spraying crevice tool more than the Max Pet’s lower listed weight.
- The 3-inch stain tool, crevice tool, and HydroRinse hose tool cover the jobs you expect to do.
- You prefer a simpler purchase and do not specifically need the 3860’s Pet Hair Removal Tool.
The 1400B can still handle compatible pet-related stains. Its distinction is the larger clean tank and included spraying crevice tool, not an inability to clean up after pets. The Max Pet instead adds a dedicated pet-hair tool.
When the Little Green Max Pet 3860 Is Worth It
The 3860 is the better fit when these points describe the actual problem:
- Hair on soft surfaces is a recurring part of the cleanup, not a rare exception.
- Lower listed product weight matters more to you than retaining the 1400B’s larger clean tank.
- The Pet Hair Removal Tool and Self-Cleaning Tough Stain Tool match the surfaces you clean most often.
- A 3-year limited warranty is meaningful to you, after confirming the current warranty terms and eligible seller.
It is not the right upgrade for every apartment. Bissell lists the 3860 at 8.2 lb, but its current public product page does not provide product dimensions. Do not assume it will fit a particular shelf or storage cart without checking first.
Is the Max Pet worth replacing a working 1400B?
For occasional stains that your 1400B already handles, our recommendation is to keep it. If pet hair repeatedly complicates upholstery cleanup, the 3860’s dedicated tool is a more concrete reason to switch. If carrying is the issue, its listed weight is lower, but water and the accessories you carry also affect the load.
For a first purchase, compare the actual checkout prices and included tools for 1400B and 3860. Do not assume the Max Pet always costs more, or pay extra expecting a larger tank or a proven suction advantage over the 1400B. The better purchase is the one that addresses your repeated cleanup task without giving up an attachment you need.
What Neither Machine Replaces
Neither product should be bought with the expectation that it will deep-clean an entire wall-to-wall carpet like a full-size upright carpet cleaner. These are portable cleaners for local work on compatible soft surfaces.
They also do not replace dry pickup of loose solids, hair, or debris before wet cleaning. For a pet bed, rug, or couch with substantial loose hair, remove the dry debris first and then follow the machine and surface instructions for spot cleaning. Do not use a cleaning formula on delicate, color-sensitive, or water-sensitive fabric without checking its care label and testing an inconspicuous area.
Maintenance and Warranty Checks Before Buying
Before choosing either model, verify these points on the live product and support pages:
- Exact model: This article compares 1400B and 3860 only. A different number can mean another Little Green role or bundle.
- Tank routine: The 3860 has separately listed
32 ozclean and dirty tanks. The 1400B publicly lists a48 ozclean tank but not a separate dirty-tank capacity. - Tools: Check the included tools rather than assuming that every retailer bundle contains the same formula bottle or attachment.
- Power: Both are corded with a
15 ftpower cord. The 1400B page lists3 A; the 3860 page does not provide an equivalent public amp figure in its current specifications. - Cleaning and storage: Use the owner guide for tank emptying, tool cleaning, hose rinsing, and drying before storage.
- Warranty: Bissell links the 1400B to a 1-year limited warranty guide and the 3860 to a 3-year limited warranty guide. Warranty eligibility can depend on country, seller, and proof of purchase.
FAQ
Is the Bissell Little Green Max Pet 3860 the same as the Pet Pro?
No. This page compares the Little Green 1400B and Little Green Max Pet 3860. The Little Green Pet Pro is a separate product role and should not be treated as interchangeable based on a similar name or pet-focused marketing.
Does the 3860 have a larger tank than the 1400B?
No, its clean-water tank is smaller: 32 oz versus the 1400B’s 48 oz. The 3860 also lists a 32 oz dirty tank, but the reviewed 1400B product page does not state a separate dirty-tank capacity, so we cannot make the same comparison for recovered water.
Which one is better for a couch with pet hair?
The 3860 is the more targeted choice when hair removal from upholstery is a recurring task because Bissell lists its Specialized Pet Hair Removal Tool. For occasional stains without regular hair cleanup, the 1400B’s general-purpose tools may be enough.
Does either cleaner heat the water or clean a whole carpeted room?
Do not buy either one on that assumption. They are portable spot cleaners. Follow the current owner documentation for water, formula, and compatible-surface instructions; use a full-size carpet-cleaning category when you need to wash an entire room.
Bottom Line
The Bissell Little Green 1400B is the fit for buyers who prioritize its larger clean tank and spraying crevice tool. The Little Green Max Pet 3860 is the fit when lower listed weight, a pet-hair tool, and the longer listed warranty matter more. Neither is automatically better for every household.
The most important buying check is the exact model number. Then verify the current included tools, measure the storage space, and decide whether the machine’s wet-cleaning and drying routine fits your home. That will lead to a better choice than treating every Little Green as the same product.
For a different pet-focused Little Green comparison, see Bissell Little Green vs Little Green Pet Pro. For a wider shortlist across brands and roles, see our best portable spot cleaners for small apartments.
If you have already ruled out the standard 1400B, see Bissell Little Green Max Pet vs Pet Pro for the direct 3860-versus-3909 decision. It focuses on their published carry weights, tank details, hose reach, and the extra crevice tool included with the Pet Pro.
