It's a bad day to be outside, but being in a building without heat is bad too.

That's why Allentown School District officials have closed Harrison-Morton Middle School on Wednesday.

Officials told 69News there's a problem with the heating system at the school, located at 137 N. 2nd Street in Allentown.

Staff is being located to another building.

All other schools in the district is operating on a two-hour delay.