| HVAC air flow questions 77 model [message #267225] |
Sat, 06 December 2014 07:25  |
kerry pinkerton
Messages: 2565
Registered: July 2012
Location: Harvest, Al
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I've spent a couple hours this morning searching and reading about HVAC systems and haven't found the answer to my question...actually two questions.
I have a late 77 with one of the less sucky HVAC units. I have good (by GMC standards) air flow from the AC vents but no detectable air flow on the floor when in heat mode. All the air comes out the AC vents and your feet freeze. We're planning on going to the Lazy Days rally in Tampa next month and I would like to get some heat on the floor.
First question: Is this just the nature of the beast or is there an air door or valve that is not working? If so, any ideas on how to reach it or where it is? Thoughts, advice, and opinions welcome.
Second question: Under the hood center is a plastic flap and under that is what appears to be a fresh air intake. I have not yet investigated if the air door in it is working or not. We rarely use anything but max air and in the very unlikely event it gets too cold, just adjust via adding some heat. Is there anything to be gained/lost by sealing this area up?
I'm not yet ready to gut my dash so if there is anything I can do to improve things, I'm open.
Kerry Pinkerton - North Alabama
Had 5 over the years. Currently have a '06 Fleetwood Discovery 39L
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