The catch
BISSELL Big Green Professional Carpet Cleaner
It's a heavy, commercial-style machine to haul around, and it claims a lot of closet space.
Side by side
BISSELL Big Green vs Revolution HydroSteam, Compared: HydroSteam carries easier, though urine needs care, while Big Green reduces tank stops
Quick verdict
Big Green is the pick for long carpet-cleaning sessions, when fewer stops at the tank and the extra hose reach count. HydroSteam 4123 makes more sense if the cleaner has to go upstairs or you deal with sticky food spills along with pet accidents. For pee, its manual calls for SteamWash Max and prohibits Steam Pretreat. Steam and tank size on either machine are no proof of better odor removal.
Before you buy
Why, and what it costs you
What the pet left behind decides the right mode
Urine goes in SteamWash Max on HydroSteam 4123, and Steam Pretreat is specifically excluded for urine and blood. Buying it for pet accidents does not mean using its most steam-focused setting on every stain.
Where this comes from
In the exact 4117/4120/4123 manual, urine and vomit map to SteamWash Max. Steam Pretreat targets sticky messes, and neither the brushroll nor the vacuum motor runs during it.
The catch
BISSELL Revolution HydroSteam
Across several rooms, its one-gallon clean tank means more refills than Big Green.
BISSELL Big Green Professional Carpet Cleaner
- Why pick it
- You do large carpeted areas in one sitting.
- You want the extra hose length, and the heavy body will stay on a flat floor.
- The catch
- It's a heavy, commercial-style machine to haul around, and it claims a lot of closet space.
BISSELL Revolution HydroSteam
- Why pick it
- You move the cleaner from floor to floor
- For sticky food spills, you want the separate Steam Pretreat step.
- The catch
- Across several rooms, its one-gallon clean tank means more refills than Big Green.
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What this page compares
Big Green 86T3 against HydroSteam 4123, judged on longer cleaning runs, carrying upstairs and steam at the floorhead. Note that the 4123 hose does not deliver steam.
Big Green is the pick for several carpeted rooms on one floor with fewer refill stops. HydroSteam 4123 is the pick for easier carrying and steam pretreatment on approved carpet stains. Its steam stays at the floorhead, so it is the wrong upgrade if you want to steam a sofa or car seat.
Which one fits
Pick the situations that sound like you
The carpet has been peed on by a puppy
Follow the correct upright formula and carpet instructions. For urine, HydroSteam 4123 assigns SteamWash Max and explicitly excludes Steam Pretreat.
- BISSELL Big Green Professional Carpet Cleaner
- Good
- BISSELL Revolution HydroSteam
- Good
I want to use steam on a fabric pet bed
There is no steam system on Big Green, and HydroSteam 4123 does not send steam through its hose. The appropriate extraction tool may still clean water-compatible upholstery.
- BISSELL Big Green Professional Carpet Cleaner
- Not suitable
- BISSELL Revolution HydroSteam
- Not suitable
Several carpeted rooms on one floor are what I clean
More solution and the longer cord come with Big Green. Its larger body is less of a burden when it never has to go upstairs.
- BISSELL Big Green Professional Carpet Cleaner
- Better fit
- BISSELL Revolution HydroSteam
- Good
The machine has to be carried between floors by me
Even with its conflicting 20 to 22 lb figures, HydroSteam still sits 20 to 22 lb below Big Green's 42 lb empty weight.
- BISSELL Big Green Professional Carpet Cleaner
- Caution
- BISSELL Revolution HydroSteam
- Better fit
The problem is sticky stains on approved carpet
Floorhead Steam Pretreat is what the 4123 adds. Per the manual, you warm up the heater and then move over the stain, and no steam goes through a hose.
- BISSELL Big Green Professional Carpet Cleaner
- Depends
- BISSELL Revolution HydroSteam
- Better fit
I need reach around the cleaner while it is parked
The nine-foot hose on Big Green is two feet longer. Keep the body somewhere safe and stable, and do not balance it on stairs.
- BISSELL Big Green Professional Carpet Cleaner
- Better fit
- BISSELL Revolution HydroSteam
- Good
In practice
Differences you will notice
What the pet left behind decides the right mode
Urine goes in SteamWash Max on HydroSteam 4123, and Steam Pretreat is specifically excluded for urine and blood. Buying it for pet accidents does not mean using its most steam-focused setting on every stain.
How we worked this out
In the exact 4117/4120/4123 manual, urine and vomit map to SteamWash Max. Steam Pretreat targets sticky messes, and neither the brushroll nor the vacuum motor runs during it.
Different stair problems are solved by a longer hose and by a lighter machine
HydroSteam's 7-foot hose falls 2 feet short of Big Green's 9-foot hose. Based on its much lower listed empty weight, HydroSteam is easier to carry between landings. Decide by where the machine can safely stand while the tool reaches the stairs.
How we worked this out
Hose length of 9 versus 7 feet and empty weight of about 42 versus 20 to 22 pounds are what the checked specifications list. Hose reach is not stair count, and full tanks add carried weight.
Clean solution capacity is 75% higher on Big Green
Refill interruptions can drop thanks to its extra three quarters of a gallon.
How we worked this out
Spray use and repeated passes vary, so neither capacity specifies rooms per fill. (1.75 - 1) ÷ 1 × 100 = 75%.
Two separate parts make up the reach difference
Five feet of cord and two feet of hose are what Big Green adds.
How we worked this out
Do not add them into a guaranteed safe working radius. The cord increase is 5 ÷ 20 = 25%, and the hose increase is 2 ÷ 7 = 28.6%.
A full clean tank adds to what is already the heavier machine
As a water-only planning estimate, Big Green starts near 56.5 lb and HydroSteam around 28.3 to 30.3 lb.
How we worked this out
This assumes 8.3 lb per US gallon of water: add 1.75 × 8.3 to 42, or 1 × 8.3 to 20 to 22. It is not a measured operating weight, and it excludes formula, attachments and remaining dirty water.
The steam upgrade ends at the floorhead
For furniture work done with the hose only, you give up Big Green's longer hose and gain no hose steam in return.
How we worked this out
Water and formula are all the 4123 manual allows through the hose. Its steam mode therefore does not satisfy a steam-upholstery requirement.
Option A
BISSELL, 86T3
Big Green Professional Carpet Cleaner
Large tanks, a long cord and a nine-foot attachment hose come on this heavy upright extractor.
- Best for
- You do large carpeted areas in one sitting.
Facts we checked
- Clean tank of 1.75 gallons
- Power cord of 25 ft
- Hose: 9 ft
- Cleaning path of 10.5 inches
Option B
BISSELL, 4123
Revolution HydroSteam
Steam pretreating and a self-cleaning hand tool come with this full-size upright.
- Best for
- You move the cleaner from floor to floor
Facts we checked
- Clean tank of 1 gallon
- Power cord of 20 ft
- Hose: 7 ft
- Cleaning path of 11 inches
Spec by spec
Where they really differ
| Spec | BISSELL Big Green Professional Carpet Cleaner | BISSELL Revolution HydroSteam | In practice |
|---|---|---|---|
| Clean tank | 1.75 gallons | 1 gallon | The 75% extra solution on Big Green is capacity and not a measured increase in area cleaned. |
| Power cord | 25 ft | 20 ft | Before another outlet is needed, Big Green gives five more feet of cable. |
| Hose | 9 ft | 7 ft | Fewer moves of the safely parked body around furniture may result from two more feet. |
| Cleaning path | 10.5 inches | 11 inches | Beside the tank and carrying differences, the half-inch width difference is small. |
| Empty weight | 42 lb | About 20 to 22 lb | Conflicting figures appear on BISSELL's HydroSteam page. Both still make it much lighter than Big Green. |
| Heater and steam | No heater | Steam Pretreat and SteamWash Max | The added treatment on HydroSteam sits at the upright floorhead. |
| Hose output | Water and formula extraction | Water and formula, no steam | For a sofa or vehicle seat, neither offers steam through the hose. |
| Included hand tools | 6-inch Tough Stain Tool | 4-inch self-cleaning tool and spraying crevice tool | Pick broader hand passes, or narrower access along with the supplied rinse routine. |
| Pretreat sequence | Separate compatible pretreatment if required | About 35-second warm-up, then 20-second stain passes | The pretreatment duration is not the warm-up. Steam Pretreat is prohibited on blood and urine. |
| Drying guidance | No like-for-like steam mode | SteamWash Max guidance is 3 to 4 hours | A Quick Dry mode from another model is no basis for buying this exact 4123. |
| Limited warranty | 5 years | 3 years in the exact manual | Duration is not a durability test, so check conditions and seller eligibility. |
Trade-offs
What each pick costs you
With BISSELL Big Green Professional Carpet Cleaner
- The wide commercial-style head is slow to turn around in a small furnished room.
With BISSELL Revolution HydroSteam
- Steam only reaches the floorhead, and you can't use Steam Pretreat on blood or urine.
Change of plan
When the answer changes
The main frustration is refill stops, with several large rooms sharing one floor.
Go with BISSELL Big Green Professional Carpet Cleaner. Those interruptions are addressed by the larger tank and longer cord, which makes a stronger case than choosing by the word professional.
Every job means taking the cleaner upstairs.
Go with BISSELL Revolution HydroSteam. The empty lift is around 20 to 22 lb lighter with HydroSteam, despite the conflicting figures on its product page.
Steam reaching a sofa or car seat is what the purchase hinges on.
Neither model fits. No steam is available on Big Green, and the 4123 hose explicitly carries none. The required feature is missing from both.
Wet extraction is ruled out by the material's care instructions.
Neither model fits. Liquid extraction is used by both machines, so neither suits the job if the material cannot be wet-cleaned. A restriction on Steam Pretreat alone does not exclude an approved extraction mode.
Decision guide
How to decide
For long sessions on carpet where you want fewer tank stops and more hose reach, pick Big Green. If the cleaner gets carried upstairs, or you face sticky food spills in addition to pet accidents, pick HydroSteam 4123. Its manual specifies SteamWash Max for pee and forbids Steam Pretreat. Neither the steam nor the tank size makes a machine better at removing odor.
Fur, solid waste and the wet stain each need their own approach
Fur still needs a dry vacuum, since neither cleaner is a substitute. Pick up solid pet waste first, on its own, so only the stain is left to treat. Then follow the carpet's care instructions and the cleaner's exact mode and formula guide. On the HydroSteam, Steam Pretreat loosens sticky messes without suction, so it does not extract a stain by itself. The hose is not a steam attachment for a pet bed either.
Empty, HydroSteam weighs about half as much
Measured against 42 lb, 20 lb comes out 52.4% lighter and 22 lb comes out 47.6% lighter. Since the published weights conflict, the carrying recommendation is unaffected, and the range keeps both BISSELL figures.
Look at your floor plan before the steam label
Across a large carpeted floor, you will run into tank stops and outlet changes as a matter of course, and Big Green deals with both. HydroSteam is the better compromise once the cleaner has to be carried upstairs, though its smaller clean tank means more refill stops. Work out where the machine will be stored and filled before you pay for a mode.
Carpet steam is not upholstery cleaning
On approved carpet, the HydroSteam floorhead can loosen sticky messes. The hose, by contrast, is a regular water-and-formula extraction path. If most of your work is on a sofa, stairs or a car seat, that difference affects what you should buy. A portable extractor may handle those individual jobs more easily, and a task that specifically needs steam calls for another product.
Allow for pretreatment and drying time
In the exact guide, heater warm-up takes approximately 35 seconds, and that is counted apart from the 20 seconds spent moving over a stain. For SteamWash Max, the drying guidance is three to four hours. Nothing here supports a 30-minute whole-room promise. Stick to the listed stain and material restrictions, and make dry extraction passes as directed instead of piling on more solution.
What this page can’t tell you
- Nothing promises that either model will sanitize pet waste or get rid of every urine odor, and no matched odor-removal test has been added.
- The tank, width and weight math speaks to hardware and handling. It says nothing about measured stain removal.
- The manufacturer page contradicts itself, so HydroSteam's empty weight stays a 20 to 22 lb range.
- Per the 4123 guide, certain delicate fibers are off limits, and Steam Pretreat must not be used on blood and urine.
By the numbers
What the data shows
What we found across the carpet cleaners we compare, plus the checked facts behind each finding.
Show the facts and the math
| Product | Needs it meets | Facts we checked | Sources |
|---|---|---|---|
| BISSELL Big Green Professional Carpet Cleaner |
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| BISSELL Revolution HydroSteam |
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Ready to buy
See today’s price and what owners say
Open either model on Amazon for the current price, customer reviews and delivery options.
BISSELL Big Green Professional Carpet Cleaner
You do large carpeted areas in one sitting.
See price & reviews on AmazonBISSELL Revolution HydroSteam
You move the cleaner from floor to floor
See price & reviews on AmazonEach link opens in a new tab.
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