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TexasRedNeck's avatar
TexasRedNeck
Explorer
Sep 16, 2013

Does anyone make an A/C larger than 15,000 BTU

Curious, at 100 degrees the 15,000 struggles to keep up at times. Does anyone make a rooftop AC larger than 15,000? Say , like a 17,000? I have not been able to find one if they do.

Thanks as always
  • kmbelt wrote:
    Corkey05 wrote:
    Atwood makes both 16k and 18k for RV's.

    Website

    Brochure


    Here is information from the website.

    "Air Command is the QUIETEST, MOST EFFICIENT air conditioner in its class, offering 16K or 18K BTU equivalent performance... THE LATEST TECHNOLOGY using the LEAST AMOUNT OF ENERGY."

    I'm not buying it, if the technology worked, all manufacturers would have something similar. Probably a 15k that can under certain circumstances can perform better. Once the stars align, sky is clear, and he!! freezes over for optimal performance.
    Yeah, ... it's hard to validate claims, but the Penguin ll is on the same path. They don't give BTU figures, but call it a High Capacity. It seems the gain is in more efficient compressors and fan motors, plus improved air flow. Lets face it, the roof ac's we know are all on the poor end of efficiency, so improvements are inevitable.

    Penguin ll

    Believe me I'm not advocating either of these units, just passing on what's out there.
  • Corkey05 wrote:
    Atwood makes both 16k and 18k for RV's.

    Website

    Brochure


    Yes, but I have NOT seen such a unit and Atwood just entered the AC field. Rememeber what happened with Carrier. I would NOT trust that they actually put out 16 and 18 BTU's in hot climates. I just downloaded the Atwood spec sheet for BOTH and they state 13.5 and 15, NOT anything higher. Doug
  • We got a small 120v window unit, that I hang in the bedroom window when additional A/C is needed. It is hard to keep things cool with our high temps.
  • Corkey05 wrote:
    Atwood makes both 16k and 18k for RV's.

    Website

    Brochure


    Here is information from the website.

    "Air Command is the QUIETEST, MOST EFFICIENT air conditioner in its class, offering 16K or 18K BTU equivalent performance... THE LATEST TECHNOLOGY using the LEAST AMOUNT OF ENERGY."

    I'm not buying it, if the technology worked, all manufacturers would have something similar. Probably a 15k that can under certain circumstances can perform better. Once the stars align, sky is clear, and he!! freezes over for optimal performance.
  • I think two ac would be better than a bigger one . two units gives you 30k of cooling.
  • My only contribution would be to say, check the supply wiring to see of it is big enough to handle the extra power needed for a larger AC.
  • TexasRedNeck wrote:
    Curious, at 100 degrees the 15,000 struggles to keep up at times. Does anyone make a rooftop AC larger than 15,000? Say , like a 17,000? I have not been able to find one if they do.

    Thanks as always
    Don't know if such a beast exists for RV's. I do know that residential,window-type A/C's larger than 14,500-15,000 BTU typically require 220 volts to operate. Just something to consider.
  • I haven't heard of any 17k A/C's, but most people will simply add another AC boosting you to 30,000 btu. Other, more practical measures might include screening, slide toppers, window insulating curtains/shades, and tinting. Perhaps in a more permanent setting one might take advantage of an RV well-positioned under trees or other shade producing structures. Even so, at 100 degrees the general rule is start early (like at night) and low (as in the thermostat setting). It won't keep up, but it does help.
    Some people have added (very nicely) a well placed window A/C which is powered off the 20 amp receptacle on the pedestal. I guess it's just a matter of how bad one wants to stay cool.
  • The largest is 15k. If your RV is longer than 25 foot, a 15k will not be able to keep up in temps above 90 degrees and hi humidity. Doug

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