The powerful forward came off the substitutes' bench to net the winner in the Hammers 2-1 win over Chelsea at the weekend.
And Collins believes that the England international is a very valuable player at Upton Park, as he is so difficult for defenders to deal with.
“Any team in the Premier League would be delighted to have Andy Carroll on the bench,” Collins said. “He’s still a young lad but his dedication to getting fit and staying strong has been unbelievable.
“He’s been spot on in training, he's worked hard and we’re reaping the rewards of his hard work. He came on and he was fantastic again.
“If I was on the defending team and Andy Carroll was coming on, I wouldn’t be too happy about it because you know what’s going to happen. He’s big and he’s strong."
Carroll has struggled with injury since he joined West Ham, but he is currently making another comeback and seems to be getting back to full health.
The 26-year-old's header against Chelsea highlighted the quality he has at his disposal, and he could be vital for Slaven Bilic as the season progresses.
Most of West Ham's strikers possess great pace, but Carroll's aerial strength means that he gives them a different route to goal, and that was crucial to them picking up three points against Chelsea.
West Ham's win over Jose Mourinho's side has pushed them up to third in the Premier League table, and they appear to have the potential to mount a strong push for a European spot this season.