The England international has been an ever-present this campaign for the Toffees and former Manchester United man Howard insists the centre-back is "willing to do three and four people's jobs" on the pitch.
The American keeper told the club's official website: "He's so dependable for his teammates, for me as a goalkeeper and for the fans. He's always there - willing to stick his nose in where other people won't.
"He's willing to do three and four people's jobs on the field even if that risks making a mistake.
"A lot guys will say, 'I'll do my job and to heck with you, you sort yourselves out', but he's trying to put fires out all over the field at the risk of sometimes putting himself on the line - he's brilliant."
Howard also looked ahead to his team’s clash with Bolton at the weekend and believes Owen Coyle has changed the Trotters' "rough and tumble" style, which he suggests is arguably to their detriment.
He added: "I know quite a few players at Bolton and they have nothing but good things to say about Owen Coyle.
"He's changed their system a little bit to suit his style and it is more of a passing style.
"But in the Premier League you have to be rough and tumble you have to be able to defend your goal first and foremost. You have to be able to press, kick and battle all over the field.
"He's taken their style from being just rough and tumble to having much better passages of play and the ball on the floor a bit more. But we need to worry about what suits us best and we'll do that."