Bissell 78R5/33N8A vs 14259
images from manufacturer

There is big difference between these 3 Bissell small portable carpet spot and stain removers.
(Exactly only 2 machines, since Spotbot and Spotbot Pet are the same machine)

* The Bissell Spotbot/Spotbot Pet has a hands-free cleaning feature. It has spiral brush at the bottom of the machine. You can preset the cleaning cycles, then the machine will automatically spray, brush, and remove stains and odors.
While the Little Green Proheat does not have the spiral brush, hands free cleaning function.

* The Little Green Proheat has a built-in water heater whereas Spotbot/Spotbot Pet has no heater.

Other differences are the tank capacity, motor amps, and included tools.

The Little Green Proheat has dirty tank to hold up to 48 oz whereas the Spotbot/Spotbot Pet holds 32 oz.
The Little Green uses 9 amps motor versus 3 amps on the Spotbot/Spotbot Pet.
The Little Green Proheat comes with a 3″ Stain Tool and a 2-in-1 Crevice Tool whereas the Spotbot/Spotbot Pet comes with a 3″ Tough Stain Tool.

Download manuals to learn more.
Spotbot/Spotbot Pet manual
http://www.bissell.com/~/media/site%20us/documents/user%20guides/33n8a/bissell_user_guide_spotbot_pet_carpet_cleaner_33n8a.pdf?la=en
Little Green Proheat manual
http://www.bissell.com/~/media/site%20us/documents/user%20guides/14259/bissell_user_guide_little_green_proheat_14259.pdf?la=en

Please share your opinions on the Little Green Proheat or Spotbot/Spotbot Pet to help others buy the right Bissell portable spot cleaner.

Bissell 5207A vs 14259
images from manufacturer

The key difference between Bissell Little Green Proheat 14259 and Bissell SpotClean 5207A is that the Little Green Proheat has a Built-in Water Heater to heats tap water up to 25 degrees hotter whereas the SpotClean 5207A does not have a heater, instead, it features Bissell’s Heatwave Technology which uses the motor heat to maintain the water temperature.
The other differences are the tank capacity, amps, included tools, weight, color, warranty.
* The dirty tank capacity on the Little Green Proheat is 48 oz versus 37 oz on the SpotClean.
* The Little Green Proheat uses 9 amp motor versus 3 amp on the SpotClean.
* The Little Green Proheat is heavier than the SpotClean.
* The Little Green has a 2-in-1 crevice tool and a 3 inch stan tool whereas the SpotClean has a 3 inch stain tool and a 4 inch deep reach tool.
* The Little Green carries one year limited warranty versus 2 year warranty on the SpotClean.

Similar things they have.
Portable cleaner for small spots;
separate clean water tank and collecting tank;
detergent and clean water should be mixed manually and stored in the clean water tank;
both come with trial size formula.

Download manuals to learn more.
Little Green Proheat 14259 manual
http://www.bissell.com/~/media/site%20us/documents/user%20guides/14259/bissell_user_guide_little_green_proheat_14259.pdf?la=en

SpotClean manual
http://www.bissell.com/~/media/site%20us/documents/user%20guides/52074/bissell_user_guide_spotclean_proheat_52074.pdf?la=en

If you own Bissell SpotClean or Little Green Proheat, please share your opinions below to help others buy the right one.