In 1999 we purchased a fancy Flushmate toilet which uses less than 1.6 gallons of water per flush. It uses compressed air which creates a “turbo - charged flushing action“. (Manufactures words.) I must say it indeed does flush well although a little loud, I suppose. ($300)
Moving on in time to 2015 and the plastic turbo generating pressure tank inside the porcelain tank developed a small leak at the seam. This leak was about the size of a pencil lead and did not cause an external leak fortunately as we caught the leak early.
It turns out we saved some paperwork that mentioned there was a recall on this toilet. After checking out the details sure enough this toilet qualified even after 16 years of usage! The company sent out a replacement plastic air pressure tank for absolutely free.
I had to remove the porcelain tank and remove the defective plastic pressure tank and install the replacement tank. Now all worked as good as new. This recall was part of a class action settlement which may yet also pay me $50 for the effort I went through to replace the tank. The $50 is still in the works so can’t say for sure that will happen.
I am indeed grateful for the companies follow through and somewhat humbled as the original equipment did last 16 years.