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If you want a BISSELL Little Green ProHeat portable carpet cleaner for pet messes, the biggest buying decision is whether you need true heated cleaning or the lower-cost HeatWave design. The Little Green ProHeat Pet is the strongest pet-focused choice, the Little Green ProHeat SmartMix 3935 adds automatic formula mixing and a rinse mode, and the classic Little Green ProHeat 2513G offers simpler spot cleaning with a larger 37 oz. clean tank. All three are corded portable cleaners designed for carpet, upholstery, stairs, pet beds, and other water-safe soft surfaces.
Quick Verdict
- Best for Pet Messes: BISSELL Little Green ProHeat Pet
- Best Premium Features: BISSELL Little Green ProHeat SmartMix 3935
- Best Value: BISSELL Little Green ProHeat 2513G
Quick Comparison
| Model | Best For | Heating System | Clean Tank | Weight | Amazon |
|---|---|---|---|---|---|
| ProHeat Pet | Pet stains, odors, and embedded hair | Actively heats solution to 120°F | 32 oz. | 9.7 lb. | Check Price |
| ProHeat SmartMix 3935 | Convenient mixing and water-only rinsing | Actively heats solution to 120°F | 32 oz. | 9.7 lb. | Check Price |
| ProHeat 2513G | Lower-cost everyday spot cleaning | Maintains warm-water temperature; does not actively heat cold water | 37 oz. | 9.2 lb. | Check Price |
BISSELL Little Green ProHeat Pet Portable Deep Cleaner
Best for Pet Messes: The Little Green ProHeat Pet is the most directly matched option for homes dealing with pet accidents, set-in spots, lingering odors, and hair on water-safe carpet or upholstery. Its integrated heater warms the water-and-formula mixture to 120°F in less than 30 seconds, while the compact body is easier to carry than a full-size carpet cleaner.
BISSELL’s current U.S. ProHeat Pet reference model has a 32 oz. clean tank, a 27 oz. dirty tank, a 15 ft. power cord, and a 4.8 ft. hose. It includes a Self-Cleaning Tough Stain Tool and a Pet Hair Removal Tool. The machine is corded, not battery-powered, so it offers continuous operation near an outlet but is not intended for cordless outdoor use.
Why You’ll Like It: It combines active heated cleaning with a tool package built around common pet-owner problems. The self-cleaning tool also helps flush residue and debris from the tool and hose after use.
Who Should Buy This: Pet owners who want active heat and a dedicated pet-hair tool for carpet, stairs, pet beds, upholstery, and vehicle fabric.
Who Should Avoid This: Buyers who need a cordless cleaner, a large tank for whole-room cleaning, or a machine for sealed hard floors.
Pros:
- Integrated ProHeat system actively heats cleaning solution to 120°F.
- Pet Hair Removal Tool helps loosen hair from carpet and upholstery.
- Self-Cleaning Tough Stain Tool makes after-use flushing easier.
- Compact 9.7 lb. design is easier to move than a full-size extractor.
Cons:
- 32 oz. clean tank and 27 oz. dirty tank are intended for spot jobs, not entire rooms.
- Corded design requires a nearby outlet.
- Higher-feature design may cost more than the classic ProHeat model.
BISSELL Little Green ProHeat SmartMix Portable Deep Cleaner 3935
Best Premium Features: The Little Green ProHeat SmartMix 3935 is designed for buyers who want true heated cleaning without manually measuring formula for every refill. Its integrated heater brings the cleaning mixture to 120°F in less than 30 seconds, and SmartMix Technology automatically combines water and BISSELL formula at the intended strength.
This model has a 32 oz. clean tank, a 27 oz. dirty tank, a 15 ft. power cord, and a listed weight of 9.7 lb. It also offers a water-only Rinse Mode, a Self-Cleaning Tough Stain Tool, and a Spraying Crevice Tool for edges and narrow fabric-covered areas.
Why You’ll Like It: SmartMix reduces measuring mistakes, while Rinse Mode lets you make a final pass with water only. This combination is useful for households that clean frequent spills and want a simpler setup-and-rinse routine.
Who Should Buy This: Buyers who prioritize automatic formula mixing, active heat, and a rinse setting over maximum tank capacity.
Who Should Avoid This: Shoppers who prefer a basic low-cost model or need a dedicated pet-hair accessory included in the box.
Pros:
- Integrated ProHeat system actively heats the water-and-formula mixture.
- SmartMix automatically controls the formula-to-water ratio.
- Water-only Rinse Mode adds flexibility after cleaning.
- Self-cleaning stain tool helps clear residue from the tool and hose.
Cons:
- 32 oz. clean tank is smaller than the classic model’s 37 oz. tank.
- At 9.7 lb., it is not the 5 lb. machine described in some listings.
- Corded operation limits reach to the cord-and-hose working radius.
BISSELL Little Green ProHeat Portable Carpet Cleaner 2513G
Best Value: The Little Green ProHeat 2513G is the simplest of the three picks and a practical choice for everyday spills, pet spots, stairs, upholstery, and car interiors. Its 37 oz. clean tank is slightly larger than the tanks in the two newer actively heated models.
The important distinction is that this model’s HeatWave Technology helps maintain the temperature of warm water placed in the tank; it does not actively turn cold water into 120°F cleaning solution. For best results, fill it with warm or hot tap water as directed in the manual, never boiling water.
The 2513G weighs 9.2 lb. and includes a 3-inch Tough Stain Tool, a 3-in-1 Stair Tool, and a HydroRinse Self-Cleaning Hose Tool. Its compact shape is convenient for storage, but the tank and narrow hand tools still make it a spot cleaner rather than a whole-room carpet washer.
Why You’ll Like It: It offers the familiar Little Green spray-scrub-suction process, a useful stair tool, and a larger clean tank without paying for an integrated heater or automatic formula mixing.
Who Should Buy This: Value-focused buyers who mainly clean small stains and are comfortable filling the tank with warm tap water.
Who Should Avoid This: Buyers specifically seeking active heating to 120°F or an included dedicated pet-hair tool.
Pros:
- 37 oz. clean tank allows more spot cleaning between refills.
- HeatWave Technology helps maintain the temperature of added warm water.
- Includes tools for stains, stairs, and hose rinsing.
- Compact shape is easy to store between pet accidents and spills.
Cons:
- Does not actively heat cold water.
- 9.2 lb. weight is portable but not ultra-light.
- Designed for spot cleaning rather than full-room extraction.
Factors to Consider When Choosing a BISSELL Little Green ProHeat
The right model depends on the type of stains you clean, how often pet messes happen, and whether you value active heat, automatic mixing, pet-hair tools, or a larger clean tank. These are portable extraction machines for targeted wet cleaning, not substitutes for a full-size carpet cleaner or a dry vacuum.
Active Heat vs. HeatWave Temperature Maintenance
Do not assume every product with “ProHeat” in its name heats cold water the same way. The ProHeat Pet and ProHeat SmartMix 3935 use an integrated heater that warms the cleaning mixture to 120°F. The classic 2513G uses HeatWave Technology to help maintain the temperature of warm water you add to the tank. Choose one of the newer models when active heating is a priority; choose the 2513G when value and a slightly larger clean tank matter more.
Pet Tools and Stain Tools
The ProHeat Pet is the best match when embedded hair is part of the problem because it includes a Pet Hair Removal Tool. The SmartMix 3935 instead includes a Spraying Crevice Tool for narrow areas. The 2513G adds a 3-in-1 Stair Tool and HydroRinse hose tool. Check the exact package contents on the retailer page because bundles can vary by model suffix and seller.
Tank Capacity and Job Size
The 2513G has a 37 oz. clean tank, while the ProHeat SmartMix and current ProHeat Pet reference model use 32 oz. clean tanks and 27 oz. dirty tanks. These capacities work well for isolated spots, a few stair treads, car seats, or part of a sofa. For multiple rooms or wall-to-wall cleaning, a full-size upright extractor will require fewer refills and less hand-tool work.
Cord, Hose, and Portability
All three recommended models are corded. A corded machine avoids battery-runtime limits, but you still need to consider outlet placement, hose reach, and the path between rooms or vehicles. Weight ranges from 9.2 to 9.7 lb. before adding water, so empty the tanks before carrying the cleaner upstairs or placing it in a vehicle.
Surface Compatibility
Use these cleaners only on surfaces that permit water-based extraction. For upholstery, check the manufacturer’s care tag first: “W” and many “WS” fabrics generally allow water-based cleaning, while “S” and “X” fabrics require different care. Test an inconspicuous area for colorfastness, avoid oversaturating cushions, and follow the furniture maker’s instructions.
Formula and Maintenance
Use a formula approved for BISSELL portable carpet cleaners and follow the fill lines for your specific tank. After cleaning, empty and rinse both tanks, flush the hose or self-cleaning tool as directed, rinse removable tools, and allow the parts to dry before storage. This reduces residue, odor, and clogging without relying on unapproved descaling mixtures.
Before You Buy
- Confirm the exact model number and included tools on the Amazon listing.
- Decide whether you need active heating or only temperature maintenance.
- Check upholstery care codes before wet cleaning.
- Remember that filled tanks add carrying weight.
- Choose a full-size extractor for whole-room carpet cleaning.
Brand Commitment to Pets
BISSELL states that purchases help support BISSELL Pet Foundation and its work to reduce pet homelessness. That mission is a positive brand benefit, but the cleaner should still be selected on the basis of heating method, tool package, tank capacity, surface compatibility, and maintenance needs.
Frequently Asked Questions
Do All BISSELL Little Green ProHeat Models Heat Water?
No. The ProHeat Pet and ProHeat SmartMix 3935 actively warm the cleaning mixture to 120°F. The classic 2513G does not actively heat cold water; its HeatWave system helps maintain the temperature of warm water added to the tank.
Which Model Is Best for Pet Hair and Urine Messes?
The ProHeat Pet is the most direct match because it combines active heat with a Pet Hair Removal Tool and a self-cleaning stain tool. Odor-removal results also depend on using the correct pet formula, treating the full affected area, and extracting as much moisture as possible.
Can I Use a Little Green ProHeat on Upholstery and Car Seats?
Yes, when the fabric permits water-based cleaning. Check the care label, test a hidden area, avoid electrical components and leather, and do not oversaturate foam cushions or seat padding.
Is a Portable Cleaner Enough for an Entire Room?
It can clean isolated areas, but the small tanks and hand tools make large rooms slow. A full-size carpet extractor is a better fit for wall-to-wall cleaning, while a Little Green is better for spills, stairs, upholstery, pet beds, and vehicle interiors.
What Is the Warranty Period?
Warranty coverage varies by exact model and retailer bundle. BISSELL lists a two-year limited warranty for the classic 2513G. Check the warranty guide linked to the exact newer-model listing before purchase rather than assuming every Little Green model has the same coverage.
Can I Descale the Machine With Vinegar?
Do not add vinegar or another homemade descaler unless the manual for your exact model specifically permits it. Use approved cleaning formula, rinse the tanks and tools after use, and follow BISSELL’s model-specific maintenance instructions for mineral buildup, spray problems, or hose cleaning.
Are Replacement Parts Available?
BISSELL provides model-specific parts and support pages for these cleaners, but individual tanks, tools, caps, and hoses can change in availability. Search by the machine’s model number before ordering so the replacement matches your exact series.
Final Recommendation
Choose the BISSELL Little Green ProHeat Pet when pet accidents, odors, and embedded hair are your main concerns. Choose the ProHeat SmartMix 3935 when automatic formula mixing and a water-only rinse mode are worth the upgrade. Choose the classic ProHeat 2513G when you want a simpler, value-focused spot cleaner with a 37 oz. clean tank and do not require active heating.
Whichever model you select, confirm the exact bundle, use it only on water-safe surfaces, make several dry suction passes after spraying, and clean the tanks, hose, and tools before storage.
