Air Conditioner

jamharrison wrote:
Driving during the summer heat yesterday which was about 95 degrees into the sun. The coach was very hot even with running both AC units and the dash running. It was still 85 inside coach, is this normal, the dash has never blown cool air? This is my first DP

My experience is that keeping dash air working correctly is an ongoing problem requiring maintenance every few years.:(

1. Get the dash air repaired, or don't run it as it is contributing to your heat problem. If you don't run it, try to block the air intake so you are not getting hot air bleeding into the coach.

2. If your roof a/c's are producing air 20 degrees below the intake air, that's about right. If not, get them repaired/replaced. They may need a good cleaning.

Assuming that your roof a/c's are working right, you can get a lot of relief for the front of the coach by placing a large fan on the floor midway of the coach with the fan blowing toward the front of the coach. This will push cooler air forward. We do this often, and it really helps.

Fred

If you were heading south I would call it 100% normal. there is just no way the A/C's can keep up with the power of the sun coming in that big Greenhouse window on the front.. If you were heading north I'm less sure but .... I suspect it is still normal.. For East and west depends on the time of day but again.. The way this sumnmer is , Yes..

But then I have people trying to tell me climate change is a myth and there is no proof of global warming (Please do not respond to this line.. If you try to convince me they are wrong you will just be 1: Wasting your time and 2: preaching to the choir)

jamharrison wrote:
Driving during the summer heat yesterday which was about 95 degrees into the sun. The coach was very hot even with running both AC units and the dash running. It was still 85 inside coach, is this normal, the dash has never blown cool air? This is my first DP

Firstly, if the dash ac isn't blowing cold, then I wouldn't run it at all, as it can only deter with more humidity, rather than help with conditioned air. I for one, have never repaired my failed dash ac and don't bother with it. Actually wish I didn't have it at all and the full condenser covering up my radiator.
As for cooling in hot weather while going down the road on top of a hot chassis and especially with frequent stops, I'm thinking that it might be hard for some to reduce the interior temp by more than 10 degrees below ambient, but still should feel pretty good and especially with a much lower humidity.

You should have been able to maintain twenty degrees below ambient. Get yourself a digital infra red thermometer and verify the air temp. coming out each vent and also the return air. See if you have your twenty degrees.

I don't know if Thor has a heater control valve or not but I would check and see that it's closing the hot water off to the heater core. On some units the heater core is in line with the ac coil.

One other tip to help the dash air cool put it on recirculate so you aren't cooling the outside air but cooling the air in the coach.
Bill

Trackrig wrote:
No, it's not normal. Our 2005 Excursion DP blows nice cold air. The only time we turn on the roof AC is if we're stopping for lunch or want to cool off the bedroom over the engine before we stop for the evening if we're going to sleep right away.

Bill

X2

No, it's not normal. Our 2005 Excursion DP blows nice cold air. The only time we turn on the roof AC is if we're stopping for lunch or want to cool off the bedroom over the engine before we stop for the evening if we're going to sleep right away.

Bill

No that is not normal. There are a few things that are important about AC. If you are in an area of high humidity an air conditioner needs to remove the water from the air (and everything else in your coach such as bedding walls etc.) before it can lower the temperature below the dew point. If the humidity is at 95% at 90 degrees the AC must remove the excess humidity from the air before the temperature can drop. The hot humid air hits the cold coils and condenses out. This is why it is bad practice to open windows and doors in the evening to cool off a coach or house. All that humidity comes right back. Then the AC needs to start over again removing the moisture,

Doesn't sound right to me...you should get better cooling than than. If no cool or cooler air is blowing than the A/C needs servicing