Have them check the blending door for proper function.

If the blending door is stuck to the A/C side, and the A/C system isn't working (low or no Freon, bad compressor, etc.), that would give you hot air in the summer, and cold air in the winter.

 

My Patriot is coming up on 10 years old and its HVAC has been fine other than the low speed fan dying out. In fact its gone the longest of any vehicle I've had -- seems half the cars I've had with a/c gave me trouble after 100,000 miles.

I think your mechanic is painting with a rather broad brush. If the system ever worked, it should work again if properly diagnosed and repaired. I'd be wary of taking anything I valued to a mechanic with such an attitude. What he's really saying is, "I can't fix it." Don't be discouraged: somebody can!

Cleaning it was probably a waste of money in the first place, and I certainly wouldn't do it again.

Hopefully the solution above will work. If you can do it yourself, great; if not, take it to a better mechanic or a real dealer. Sure it will cost money, but when they're done you should have heat in the winter and cold in the summer.

 

If you're interested in working with a certified Jeep dealership, I would be happy to help. Please feel free to send a private message with your VIN at any time if you need assistance.

Kori
Jeep Social Care Specialist

 

Wouldn't you know someone else made a similar post today. Makes me a liar. > I guess this is the time of year for heater problems.

I turned up this thread: http://www.jeeppatriot.com/forum/5-jeep-patriot-general-discussion/292386-heater-issues.html Maybe something there will help. Also, try using the search box at the right end of the green menu bar above.

 

I called him back and said it might take 2-3 more cleanings of the coil to get the heat blowing hot again. At $250 per cleaning, this sounds ludicrous to me. I think he's trying to fleece me. He said Chrysler just makes a bad product and that Jeep's have crap air systems in them.

Man, run from that mechanic. From the experience of 3 decades of base model Caravans, and now a Patriot, I can attest that one of the GOOD things I sing joy about is the awesome capability of these MOPAR heating systems. I'm in Michigan...enough said.