I cant ever remember what retailer I bought my 2 from but I have contacted Marineland in the past for other equipment warranty issues, I just hope they honor my email as they dont exactly have a user friendly recall system online, and I cant imagine trying to get through to talk to them. I dont have 2 spare heater on hand and the 2 stealth's have been working as well as my other my 2 Visitherms but no where near as well as my 300W Jebo $15 heaters LOL. Just 1 Jebo 300W heats my entire 7 foot long 210 tank, so far both Jebo's have been working spot on with no anomalies.