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Old 09-19-2019, 10:49 AM   #1
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Replace 12.5 Ton with 15 Ton A/C

The main A/C on our 2018 Newmar Canyon Star is barely adequate. The Florida summer truly overwhelmed the A/C. After numerous checks to insure the unit is operating per spec, we are considering replacing the unit with a larger unit. In the south, this is a common complaint, A/C not keeping up with heat.
Has anyone attempted this upgrade?
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Old 09-19-2019, 10:54 AM   #2
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I think you mean a 15,000 btu AC unit. 15 tons in a RV is impossible. 15K is a doable upgrade.
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Old 09-19-2019, 11:22 AM   #3
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Yes it's doable. A replacement unit would cost slightly less than installing a 3rd unit. 40ft MH FL this time of year 2 15K units wont cut it.
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Old 09-20-2019, 04:59 AM   #4
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Correction

Thank you for the correction, yes indeed, a 12K BTU unit vs 15k BTU unit.
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Old 09-20-2019, 10:10 AM   #5
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Yes, no problem! I bought the Dometic Penguin II High-Capacity heat pumps to replace both of mine!
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Old 09-20-2019, 07:41 PM   #6
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Do everything you can to insulate all the glass areas. Window awnings on exterior plus inside foil will help and that front windshield foil plus heavy insulated curtains. corrugated foil in rolls at many suppliers like Lowes H.D. etc.
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Old 09-21-2019, 10:10 AM   #7
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Thank you for the comments. I'll try insulating the windows, great idea.
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Old 09-21-2019, 11:17 AM   #8
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You wouldn’t believe how much a exterior sun screen on a windshield will help.
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Old 09-22-2019, 01:38 PM   #9
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Window tint

What about using window tint on the side windows to block some of the heat. 3m says there 20% tint blocks 46% of the heat coming in the window.
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Old 09-22-2019, 05:12 PM   #10
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Quote:
Originally Posted by Tha_Rooster View Post
You wouldn’t believe how much a exterior sun screen on a windshield will help.
Completely agree!!!
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Old 09-22-2019, 07:21 PM   #11
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Swap out for 15k in Florida. We won’t even install less then 15 unless it’s a 3rd unit Ever since the Freon was made more eco friendly they barely cool at all
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Old 09-26-2019, 03:42 PM   #12
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when my carrier 13k btu untis were replaced we went with 15.5 btu units..
cant say i see or feel a difference of the amount of cold.


blocking the big window and pulling shades down helps more than anything.
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