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Cruise Aires
it was 90 degrees today and I fired up my 4 Cruise Airs and after an hour I checked the out put temperature with my didgital themomter. I had temps of 58, 48, 58, and 60. They were all set on 65. I saw no water discharge. What kind of temps do you get. I would think they should be colder? I would think there would be condensation. Any thoughts?
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15 Replies
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No expert. but if it is 90 degrees outside and you have a 30 degree drop in temp I think they are working fine.
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What was the temperature at the returns,I do agree if 1 was 48 the others should be colder than you measured.
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Ditto what Jack said. And I agree you should have seen some condensate dripping, but I don’t worry as much about that as I do the supply and return temperature spread. Compare the temperature of the cold air from the Cruise air to the return air temps. That is the best indication of how well they are performing. There are a lot of factors that influence the temperature spread so try to measure all with the fans running at max speed to rule out that variable, and make sure the unit has cycled on and the temps have stabilized when reading them. Check your filters.
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How much should the spread be between return and supply?
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If I see 20 degrees I am very pleased. I can live with 15.
One important consideration is to run them long enough to stabilize temperatures and to make sure the compressor is running. Getting accurate spreads takes time.
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According to Fred at AAP, Cruise air experts, a perfect system will show 17 degrees difference from return air temp to supply air temp.
Condensation dripping will depend on humidity in the room, and outside. If it’s not properly charged, and the suction line is not cold enough, there will be no dripping. (If there is humidity)
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AAP knows their stuff and Fred and Johnny are the go to guys there.I have seen more than 17 degrees differential on occasion but usually I see 14-17 on most of my units.I think that a real weakness of the cruise air is the fan capacity for the condensing unit and it just does not flow enough air on a 95 degree day and if the units are really tuned up with the proper freon charge they will sometimes exceed the High pressure limit and shut down.If the units are clean and properly charged they will cool very well on hot days here in the south,I have never been to the desert south west and I would think that it would be difficult to cool a coach with roof airs or cruise air there.
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Tell you down in Cenral Texas and onward down toward the Gulf Coast on these 100 degree sunblazing days with 3 Cruisairs running peak, it’s tough to keep it cool inside. Awnings out helps it seems. I even thought about putting a (1) roof top model for another cool source in place of the Fantastic fan in Kitchen area. Might look funny with one sitting up there. The back bedroom in mine with freeze you out but the mid ship and front with all the windows not so much. My Beer consumption goes up big time in summer.
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I have 4 in my 2 slide coach and have been in 104 degree in Kentucky in July and mine would maintain 72 degrees in the sun without any shade.
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I have the same experience with my Cruise Airs as Jack. But my XL coaches were not as energy efficient as the XLII and I think that is the difference.
The XL coaches did not have thermopane windows and in the winter the cold air spilling from the windows was a lot, and in the summer you could bring your hand near the windows and feel the heat pouring off them.
If you have the temperature spread discussed earlier you have a Cruise Air working as intended. It just may not be enough to overcome the lack of thermal protection from the windows.
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As discussed here, I know the difference in thermal pane windows in XL vs. XLII, but is there a specific year Prevost started to use thermal pane windows in an H-3?
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Like you said Jack, you have never been to the desert southwest. I live here, what do you think we do? Drive around with an ice pack on our neck. Four roof airs is more than enough.
The cruise airs would not be liking the hot pavement under the bus.
Later
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Ours has thermopanes throughout. (except windshield)
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Bernie’s comment is correct in the context of a non-OTR coach that relies on the house AC systems for cooling while driving.
Heat radiating from a highway that is heated by the sun is sometimes so great Cruiseairs cannot cool down the condensing unit enough. Based solely on my experience with 3 different Cruiseair equipped coaches early units were definitely impacted by those hot air temps, and my later model coaches seemed OK on 90 plus days so improvements to the Cruise airs were made. But if I did not have OTR I would want roof airs for cooling while driving.
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I was just in Las Vegas for two weeks at Las Vegas Mororcoach Resort – what a spectacular rv park. Anyway, it hit triple digits while I was there in my 1999 XL Country Coach with three roof airs. I had no problem keeping the coach cool to whatever temp I wanted.
Driving back to Texas, I only used the Country Coach OTR.
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