Mosgiel firefighters Scott Lindsay, Richard Yardley and Andrew McAuley took part in the Firefighter Sky Tower Stair Challenge last month.
The trio - dubbed the Mosgiel Infernos - raised almost $7000 for Leukaemia and Blood Cancer New Zealand, a charity intended to support blood cancer patients and their families, an increase on their efforts of $6500 last year.
Mr Lindsay said he was ''very, very chuffed'' with the effort.
''The community rallied very hard around us,'' he said.
''It was fantastic.''
The trio climbed the Sky Tower's 1103 steps while wearing full firefighting apparel and apparatus during the annual event.
''It's always hard at the top,'' Mr Lindsay said.
''It's 51 floors, just over 1100 steps and carrying about 30 kilos of kit, so it's always hard at the top - it's tough.
''But it's not as tough as what those and the families of those going through leukaemia and blood cancer go through.''
Nationally, more than a million dollars was raised during the event - the 11th time it has been held.
Mr Lindsay said his team was spurred on by those within the community suffering from leukaemia and blood cancer.
''It certainly makes it realer,'' he said.
''As a station, there's people we know that are affected by this and we have gone up and tried to raise as much as we can and we have gone up with in spirit. We have done it for them.''
It was the second time Mr Lindsay and Mr McAuley took part in the challenge and the sixth time for Mr Yardley.
Mr Lindsay said Mosgiel firefighters would be back again next year.
''We only do about 20 minutes of pain and those going through blood cancer go through a huge amount of pain,'' he said.
''We are happy to be the ambassadors for our community.
''We like to go up there and represent our community.
''We are going back next year.''
