Hello, I have a medium size commercial building with 3 toilets in each washroom. Each washroom has a pressure assisted toilet in the wheelchair stall which are faily new i think and a household toilet in the other stalls. The household toilets are very old and seem to flow slowly. I have changed the internal guts of these toilets with Home depot replacement parts and the line was snaked by a plumber, but now he said best thing to do is change the toilets. He is recommending $600 pressure assisted toilets but i am wondering if the code allows for me to just install a good grade commercial toilet which is about $200 only. We are in Ontario by the way.
If you want to install "tankless" toilets your incoming water line has to provide enough volume quickly. I think the minimum pipe size is 1-1/4 inches.
Snaking a drain line does not always restore the full diameter. Problems with toilets not flushing usually have to do with a partial blockage, either in the toilet itself or in the drain pipe. I don't think you have to get a commercial toilet unless the usage is so frequent that flush handles and flappers and floats wear out quickly.
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