So far I have this partial list of Pressure Assist with a high maximum performance rating... (I rank it based on decreasing Maximum performance done by veric)
1.
Zurn Z5572 Ecovantage EL ADA
Characteristic:
Two piece, Elongated, Pressure Assist, Dual Flush, ADA compliant, 2 1/8" trapway
Maximum Performance rating: 1000
Comments:
a. "In our experience, the some of the absolute quietest toilets in the industry flushes at around 70 db… The high range for noise ratings in toilets are over 110+ db. Our EcoVantage pressure assist toilets average in the 80s for a decibel level." ---Zurn representative
Noise Level:
Price:
2.
Mansfield EcoQuantum 148-119RHCL
Characteristic:
Two piece, Elongated, Pressure Assist, Dual Flush, ADA compliant, 2" trapway
Maximum performance rating: 925
Comments:
Noise Level:
Price:
3.
Gerber Ultra Dual Flush DF 21-324
Characteristic: Two piece, Elongated, Pressure Assist, Dual Flush, ADA compliant, 3 1/8" trapway
Maximum Performance rating: 800
Comments:
Noise Level:
Price:
4. Gerber Maurice One piece Pressure Assist 21-012
Characteristic:
One piece, Elongated, Pressure Assist, 1-7/8" trapway
Maximum Performance: (no rating published but Gerber have 800 or + rating)
Comments:
Noise Level:
Price:
I made the following assumption: 1. The larger the trapway diameter, the less likely to clog; 2. One piece toilet is easier to clean. 3. Performance can be objectively compared using stats from independent testers.; 4. Dual Flush saves the most water compared to other types; 5. Pressure assist makes the toilet bowl side cleaner coz it pushes down the water from the rim rather than "vacuum" it in from under like the gravity fed; 6. Pressure assist will be noisy??? coz of the high pressure; 7. ADA compliant is better coz the bowl height is right so it won't be a "pain" on your knees; 8. Elongated is better so it is easier for the guys to "Aim"; 9. Cost of repair????I dont know yet; 10. Longetivity??? I don't know yet
P.S. I am not affiliated in anyway with any of the manufacturer... Just a homeowner doing a bathroom remodel and some research... So I am listing facts based on reports, testing and manufacturer specs.
I will update the list so it can be a summary...
I am emailing the manufacturers for added info...
Please do include comments, corrections or personal experience on the list of toilet like noise level, repair, ease to clean...etc.
and if you have a toilet model which you can add, please do post...