Calgary rattled off four straight goals after Ellers' early snipe, completing the comeback and picking up their second straight win.
They outshot Washington 39-30, scored on two of their five powerplays, were perfect on the penalty kill, and as per HockeyStats.ca, the Flames had a 56 Corsi-for percentage in all-situations in D.C.
"I think that was definitely one of our best games, one of our most complete," Sam Bennett said. "We're doing the little things. We're limiting our turnovers, we're getting pucks deep and I think we're starting to play a lot stronger in the defensive zone. That's just going to keep building as the season goes on.
"Definitely, that was one of our best games and we're trending in the right direction right now."
For Kris Versteeg, Monday's win showcased what he believes is one of the group's best attributes - their overall demeanor in every game.
"Right now, it's just staying even-keel. I think that's what's been impressive. We get down in a game and no one really panics. We stick to our game plan and find ways to get back in and try to get a lead after that.
"We still have a lot more room to grow here but all in all, I like the way that we're handling adversity right now."
Another major positive that can be taken from their 4-1 win over the Capitals is continued growth of their third line.