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Recent content by cosmology

  1. cosmology

    RPN Calculator? RIP HP 35s

    Thanks for the great advice! I will check out the Swiss Micros
  2. cosmology

    RPN Calculator? RIP HP 35s

    Was going to bop over to amzn and buy another HP 35s after I lost one recently. Turns out they are several hundred dollars now. The other HP model doesn't appear to do RPN. Has this gone the way of the Dodo? Are there any calculators out there that do RPN? Thanks
  3. cosmology

    Maybe easy HVAC question: net air loss from space

    In that sentence I was using "ton" figuratively not literally. Using figurative speech can be useful to get ones attention, kinda like dropping f-bombs, but less abrasive (figuratively again). You say a 3 ton (btu type) A/C is over sized for 1200 SF, 17' ceiling, poor insulation, in Texas?
  4. cosmology

    Maybe easy HVAC question: net air loss from space

    My question is a basic question about the functioning of the units. It's surprising to me how hard it is to find out very basic answers on things.. go to Lowes and ask any question of mild technical nature for example. I interned at an HVAC place (Siemens) but went a different direction after...
  5. cosmology

    Maybe easy HVAC question: net air loss from space

    Ceiling is 17'. 3 tons is probably not enough. Yes, the downside of no ducting will be using fans to distribute as needed. Worth the savings over here. Thanks all
  6. cosmology

    Maybe easy HVAC question: net air loss from space

    Thanks. I found a technical guy on the phone with Freidreich who squared me away too. My space is a medium size warehouse (1200sf) in Texas (hot). Of the ones that can be DYI installed, he reccomended the SL-36, says it's built like a tank, often used as through wall. Considering it's 2k and...
  7. cosmology

    Maybe easy HVAC question: net air loss from space

    Thanks. I guess this feature is particular to portable units. It turns out there are some dual hose units that do not waste inside air. Much thanks!
  8. cosmology

    Maybe easy HVAC question: net air loss from space

    Yes, it one big exhaust hose. Many portable units are this way.
  9. cosmology

    Maybe easy HVAC question: net air loss from space

    Hey all. HVAC is not my area. I'm trying to find a way to air condition a shop space. I bought a portable A/C unit. I need something bigger, but that's not the point. With the portable, the thing exhausts a ton of air. It has a hose and you send the hot exhaust outside. So, my issue is...

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