I would like to know if there was any recalls on Giant hot water tanks in the pass few years

Hi eeyou...

None that I know of. The only way to be sure, however, is going to be to give them a call over at the GIANT manufacturing company. Check out this link to Giant:

GIANT FACTORIES INC.- Residential Electric Water Heaters.

Call and speak with the technical department... they'll have all available recall/warranty information, OK?

Good luck...

Mark