The main design flaw in canister type systems is that the canisters housing the water filters are subject to constant high water pressure and stress. Eventually the walls of the canister will weaken and fail, potentially causing a calamitous flood. Variables affecting the life of your canisters are initial build quality, sediment content of your water, water pressure, and correct canister re-installation during filter changes. To be fair, canisters explode only rarely within the first 5 years of operation, however the Home Master employs an improved design that eliminates this problem, and represents a superior value to you, the homeowner. The Home Master delivers pure water and peace of mind.