UPDATE: At least 20 fire departments help with Edgerton fire - WKOW 27: Madison, WI Breaking News, Weather and Sports

EDGERTON (WKOW) -- Fire departments from across the area were called out early Friday morning for a structure fire in Edgerton.

Firefighters from 20 departments responded around 2:30 a.m. to the 200 block of Albion Street.

The cold weather made it challenging to fully extinguish the flames. Crews rotated throughout the night and the fire contained by 6 a.m.

Even dealing the with extreme heat of fire, they still have to worry about exposure to sub-zero temperatures.

"The turnout gear, even in this cold weather, will hold in a lot of heat and you still will sweat quite a bit. Then if you are exposed to the cold afterward, there's always a risk of hypothermia," said Edgerton Fire Dept. Lt. Brennon Ruosch.

Nobody from either the family or crews were injured.

An initial investigation suggests the cause of the fire was a faulty furnace.

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EDGERTON (WKOW) -- At least 20 fire departments respond to a residential fire in Edgerton.

The fire started Friday about 2:00 a.m. on the 200 block of Albion Street.

According to the Rock County Communications Center, there are not any injuries at this point.

It's a 2-story home.

Stay with WKOW.com for more updates.