Tom Heaton felt Burnley were worthy of a reward as Swansea struck late to deny the Clarets a share of the spoils.
Leroy Fer reacted quickest to Heaton’s parried save from Fernando Llorente’s header on 82 minutes to seal the points for the visitors.
But despite the disappointment, Heaton says the squad can take the positives from what was a good early lesson.
He said: “We thought went about it in the right manner and created a few chances as well as keeping it mostly tight at the back.
“To lose to a rebound in there on the goal we feel extremely disappointed.
“It was an awkward one as Llorente has flicked it on at the near post and I’ve got fingertips on it to put it back into play and unfortunately they’ve landed on the rebound.
“But those are the sort of details in this division that you’ve got to get right and it can cost you which it has today.
“We felt we deserved something from it which was tough to take but it’s a good early lesson for us that it doesn’t always fall that way.”
The Clarets created a plethora of second-half chances but found Swans keeper Lukasz Fabianski in fine fettle, denying Sam Vokes and Dean Marney with two wonderful saves to preserve the advantage.
Heaton added: “I thought we were steady in the first half as we built into the game and second half I felt we were very good.
“We stepped on to the game and created a lot of chances. Fabianski has made a few really good saves but today it wasn’t to be.”