Any ideas on why I have no heat?

My heat, in the past was super hot when it is on "high".

The fan blower is working fine.

 

hey same here.. my heat comes out the same temp no matter what only its working fine except for the fact its blowing warm air but not heat to the temp it says

 

Do a search boys....and you'll find my answer...

 

"You can definitely flush it; but you do it in the reverse direction. Hook up a water hose to the core outlet and then an extra bit of hose to the core inlet to drain, and let 'er rip."

Do you have a photo of where you screw the hose in?

You say you need a small bit of hose to drain. Where do you hook that up?