Stuart Gray made five changes but stuck to the same system that fared reasonably well against Derby.
The 4-2-3-1 had Hutchinson and Gardner as the two deepest midfield players while the advanced one was Maghoma, who played just behind lone striker Nuhiu.
Maybe Wednesday were still trying to settle down when they got into a tangle on the edge of their own box and Llera had to make an important covering tackle on Wells.
A header by Ward, who was up front with Wells in Town’s normal 3-5-2, was easy for Kirkland but he was at full stretch soon afterwards for a shot along the ground - after a 20-yard half-volley by Gardner whizzed past Smithies’ right-hand post.
Gray showed his frustration when Maghoma was dispossessed in the box after a chance had appeared to beckon.
The Owls’ 3,500 fans behind Kirkland’s net were in great voice but will have wanted the Owls to get their attack-minded players into the game more.
Palmer had the same idea judging by the way he found Antonio with a long ball; the winger almost got clean away down the middle with his first touch but Gerrard lunged in with a fine, last-ditch tackle.
It was mostly scrappy stuff from both sides, with Huddersfield taking the game to Wednesday but neither team really hurting the other.
A mistake by Palmer meant him having to chase back towards his own goal and he brought down Ward - an inevitable booking, and a free kick in a shooting position, but the Terriers made nothing of it.
A delightful backheel by Nuhiu to Maghoma on the touchline contributed to the best move of the match so far, with many Owls players involved, and it resulted in a corner followed by pressure and a goal, in the 40th minute.
HELAN received a ball on the right side of the box,turned and drilled a shot into Smithies’ bottom right-hand corner.
Wednesday then went forward with fresh impetus and dealt comfortably with an attempted response by the home team.
Antonio did not appear for the second half. He was hurt by that challenge from Gerrard, and this may been the cause.
Maguire took his place on the right flank and should have done better than shoot ambitiously in the 46th minute: the ball hit the near side-netting and Nuhiu was better placed near the far post.
Maghoma was more on the left now, with Helan taking the role behind Nuhiu.
A scorching run from inside his own half by the Wednesday scorer was halted only by a foul for which Smith was booked.
The Owls were aided by some basic errors from the Terriers and, strong and comfortable, must have must have really fancied their chances of going home with three points.Some of Town’s passing was awful and drew irritation from home fans and derision from the away end.
Maguire glided a good ball to Nuhiu, who chested it down but mis-hit his shot and the save for Smithies was simple - unlike great work by Kirkland moments later.Ward was in the clear and his effort was blocked by the keeper at his near post.
Swiftly came another close call: Wednesday were caught on the break and Wells had an opportunity to feed support to his left, but his poor ball was intercepted well by Llera.
Best and Loovens took over from Nuhiu and Onyewu in the 66th and 69th minutes respectively, but neither of the exiting duo looked injured.
Huddersfield had used all three subs by the time the contest entered the last 20 minutes; while they were seeking a lift, it was the Owls who struck next.Hutchinson angled a pass in from the right; MAGHOMA received it, spun and clipped a neat shot into Smithies’ bottom right-hand corner, in the 72nd minute.
The Wednesday fans were having a whale of a time.
Another dynamic run by Helan from inside his own half could have carried him in behind the defence but he was clipped by Gerrard, who was booked.
Kirkland would have been relieved to see a shot trickle past a post in the 87th minute, a long-range drive by Clayton clip the top of the bar two minutes later, and Ward miss with a header in the first of four added minutes.