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<blockquote data-quote="jayphizzle" data-source="post: 711710" data-attributes="member: 2032"><p>I'm only coming in on the tail end of this, but before you guys go throwing out money on units, know this. 12.000 btuh is one ton of refrigeration, so a 4 ton unit is rated at 48,000 btuh. You can get a "Mini Split" type unit in a 4 ton, but that SOB will be expensive up front. They are super efficient and compared to a conventional system, will definitely pay for themselves over the lifespan of the equipment. When I size a system for a house/shop with common insulation (non spray foam) , I figure 600 sq ft/ton with 8 ft ceilings. (Or 4800 Ft3 per ton) That usually works out great without oversizing. You can however go to 800 sq ft /ton and be fine most of the time. If you decide to go the mini split route, you can add more systems to achieve your comfort if needed. Also go with a good brand! I can't stress this part enough!!!! I've had people use the cheapo ones off the internet (Pioneer for example) and they do not last. It's just like any other thing in life. you get what you pay for. Go with a Mitsubishi, Daikin or Fujitsu. I've personally had the best luck with Mitsubishi. If anyone wants any input on their particular building from me, feel free to PM me. Hope this helps <img src="/styles/default/xenforo/smilies2/thumb.gif" class="smilie" loading="lazy" alt="thumb.gif" title="Thumb thumb.gif" data-shortname="thumb.gif" /></p></blockquote><p></p>
[QUOTE="jayphizzle, post: 711710, member: 2032"] I'm only coming in on the tail end of this, but before you guys go throwing out money on units, know this. 12.000 btuh is one ton of refrigeration, so a 4 ton unit is rated at 48,000 btuh. You can get a "Mini Split" type unit in a 4 ton, but that SOB will be expensive up front. They are super efficient and compared to a conventional system, will definitely pay for themselves over the lifespan of the equipment. When I size a system for a house/shop with common insulation (non spray foam) , I figure 600 sq ft/ton with 8 ft ceilings. (Or 4800 Ft3 per ton) That usually works out great without oversizing. You can however go to 800 sq ft /ton and be fine most of the time. If you decide to go the mini split route, you can add more systems to achieve your comfort if needed. Also go with a good brand! I can't stress this part enough!!!! I've had people use the cheapo ones off the internet (Pioneer for example) and they do not last. It's just like any other thing in life. you get what you pay for. Go with a Mitsubishi, Daikin or Fujitsu. I've personally had the best luck with Mitsubishi. If anyone wants any input on their particular building from me, feel free to PM me. Hope this helps thumb.gif [/QUOTE]
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