Firefighter Stephen Hunt got into difficulty inside the building at around 8.35pm, along with another firefighter, Greater Manchester Fire and Rescue Service said.
Both were pulled out by their colleagues and treated by the Ambulance Service before being taken to hospital.
More top news
Ukip leader Paul Nuttall has announced that he will be standing for the seat of Boston and Skegness in the forthcoming General Election.
Beckie Finch and Adam Ryan met on the dating show but the groom had to track down his future missus after filming as he didn't pick her.
The Prime Minister was reportedly coming under pressure from Tory MPs in the south to cancel HS2.