Hondaholic4 said:I bought my heater when i got my pioneer 12-26-13 and got it a few weeks ago. It never worked right even though it was installed by my Honda dealer, they have it now for the third time and have had the district manager look at it. They replaced the "T" with a "Y" for better coolant flow and added a filler/bleeder at the highest point (top hose of heater) to get all of the air out and THEY are not satisfied with it's performance. I was told it is an engineering issue that has to be worked out by HONDA. I know this dosent help us fix the problem but I wanted to pass along what i've been told by my Honda dealer to the ones that have been doing their own work.
One big problem is the thermostat being only 180 degree's up here in the North a 180 thermostat in a car or truck is not enough we need to run 195 degree one's in order for the heater to work properly.We also have to install winter fronts in front of the Rad to try and keep as much heat as possible in the Rad etc: I believe that the only way Honda is going to fix this is by installing a different thermostat as well as close off all the air leaks.
I can honestly say my heater works not to bad. Its a different brand then the Honda one but still says 28000 BTU { kept it when I sold my other machine] .I've got mine installed inside the cab and my hose's aren't higher then the Rad cap. I was disappointed with mine at first but after spending a good deal of times closing off all the cold air leaks mine now heats up the cab to the point that I'am actually comfortable. I still have one bad cold air infiltration around the e-brake lever to try and fix.There's many places cold air blows in and each place adds up to reducing the heater's ability to warm up the cab.