Swansea manager Brendan Rodgers praised his side's sensational performance as they heaped further misery on Preston boss Darren Ferguson.
The lively Stephen Dobbie gave the Welsh side a 23rd-minute lead and it was 3-0 by half-time thanks to further strikes from Darren Pratley and Nathan Dyer.
The impressive David Cotterill added the cherry on the cake with a second-half penalty completing the 4-0 rout.
"It was a wonderful performance with four goals and a clean sheet and I have
to be pleased with that," said Rodgers.
"The players want to play in the right way and both wingers were on top form
but it was a good team performance.
"Concentration was good, particularly at the start of the second half, but
motivation was the key.
"It was fantastic but we want to continue to improve and it is my job as
manager to keep raising the bar."
Preston boss Darren Ferguson insisted his team needed more time to gel.
The defeat followed the home loss to Doncaster meaning North End have lost their opening two league games for the first time since the 1989/90 campaign.
But Ferguson said: "I always felt the early part of the season would be the
hardest as we have a lot of new players at the club and it takes time, but it is going to be a long haul.
"We did well until we gave away that soft second goal but we want to be as
competitive as possible to fix our place in this division and I have every
confidence in my players to achieve that.
"We knew what to expect as Swansea are a good passing side but I felt we were comfortable until towards the end of the first half.
"It has been a disappointing start to the season with two defeats but I am
sure that we can pull it round over the next few games.
"Despite the scoreline, our performance against Swansea was much improved on last season's visit."