I have a TOP fin Heater still works fine. The only return complaint I had with petsmart was squashed after a 2 minute talk with the manager. I think they are great about tier products and returns. I bought a 55 gallon kit, I got it home and there was no filter bag, for the top fin hob 60; they gave me a slight problem then gave me a bag, no biggie.
Then 3 weeks after I bought it the ballast went out on the fixture, they tried to tell me to bring the whole kit tank and all back. I was like no way am I tearing this down for a fixture, I argued with the person at the counter. Finally they got their manger "Now a friend of mine" he said no problem bring the fixture we will replace it. He said they have had multiple complaints about this from the same shipment. So I had no problem but I was erked but the employee that kept trying to spit out something they read in a handbook. Everyone knows there are rules, and exceptions to them and any business that succeeds knows these exceptions.
I buy all equipment and food from Petsmart and fish form a real fish store.