1995 Honda Civic No hot Air

Air Conditioning problem
1995 Honda Civic 4 cyl Automatic 122000 miles

I bought my 1995 Honda Civic last year and the hot air worked fine on it. I only used it for the last month of the winter month. This year starting in November my hot air was fine for the first 2 weeks and all of a sudden it quits heating up. It blows out air like normal its just not hot air. We have had 22 degree weather here and it has been a real problem since the heat does not work. We had the radiator replaced because I was told it was the radiator. I was told that it could be the hot air blower motor. What do you think?