Review on ISTA I H615 Inline External Heater by Donald Shah

Works but the connectors suck. Any review that doesn't include this fact is likely a paid review of the company as 100% you will have to buy hose clamps as the fittings supplied are absolutely not the right fit for the hose you are specifying. After a few trips to home storage and trial and error to ensure there are no leaks, a good product. Frustration up to this point was why I removed 3 stars and probably should remove the other two as well. You'd think the person who designed it had actual pipes (standard sizes you can get, but for 75 cents) on hand when designing the fittings. None of the screws that attach and secure the hose to the male connectors are large enough to actually screw the hose in and out. Again, this is not my unit, this applies to ALL units. This is bad design