Hello All,
I have a 2005 Civic 4DR EX SE with 46,000 miles. Have kept to Hondas warranty and service updates. No longer under warranty. Since we had our first freeze this a.m. I had the heater running full blast on hot all the way to work however, what would normally have been a nice hot and toasty cabin when I arrive at work was luke warm to say the least. I felt the air on each side to see if the blowers were working and the amount of air seems normal yet the temperature is luke warm and not hot as we have always had in the past. Any ideas or suggestions??

Thanks,
George

 

check coolant level and thermostat

 

ditto. just had an accord in with a stuck open thermostat.