I know this topic has probably been beat to death here but I wanted to show people how easy it is to perform yourself and how to install an affordable filter screen.

 

Good video, Is your heater working again after doing this?

Mine had the same amount of debris when I flushed it, but still didn't alleviate the heater issue (on driver side). What did help immensely was switching the inlet/outlet heater hoses at those same clamps....Now, I have heat again.

 

Yes heat (hot) returned but I think I have a blend door issue. Sounds like you just back flushed yours by switching the lines.

 

I flushed mine by running water through the outlet for 15min, added 4oz of CLR to inlet, flushed outlet again for 15min.... Then, I switched the lines after that didn't work.

 

Water flows great through the heater core now, just getting intermittent heat on driver side.

 

Would be good to add a step after flushing to blow out the lines. You can get a cheap hose inlet fitting for RV winterizing that you can connect a compressor to. That way zero tap water is left in the system🤞

 

I got a ton of water out of it just by blowing it through with my mouth, but yes getting that tap water out is a must.

 

Update: Here's a video of me flushing the filter system I installed on the heater core inlet side.

 

@Dirt Hammer If you are still here. Just wondering how this worked out and if you are still using it?