Pro Breeze 4-in-1 Portable Air Conditioner 7000 BTU with Remote Control, 24 Hour Timer & Dual Window Venting Kit Included. Powerful Air Conditioning Unit with Class A Energy Efficiency Rating

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I am living in the Caribbean, my entire house is 30 * 20 ft, one bed room is 11 * 9 ft floor to ceiling throughout the building is 9 ft. The house is elevated and has wooden floors now can you advise say if i should buy the 4000 BTU for my room or splurge and buy the 12,000/14,000 BTU for the entire house? I am researching the most efficient portable room air conditioner for a 2nd floor, sunny bedroom. The 13’2” by 14’5” bedroom room has cathedral ceilings, a SW facing window that measures 48” by 56” and one occupant. Due to HOA restrictions and a sliding glass window, I plan to get a portable air conditioner. I’ve read about dual hose conditioners and not sure if that’s the best way to go. I’m not sure how to calculate the necessary BTU’s needed. Can you help with any thoughts on this? Thank you, Sue Harig Reply

I’m confused. I was informed my 10,000 BTU portable AC unit was not cooling my apartment’s front room, kitchen, hallway, total 380 square feet, because a 8,000 BTUs unit would be better. I have 3 large, sun drenched windows in the front room. The ceilings are 8 feet. Reply

Hello Kris, this is an unfortunate situation. Regarding the total BTU cooling output, you’re correct: about 24,000 BTU should suffice. Central AC’s main advantage is the ductwork; it can easily homogeneously cool your entire house. With 2 window units, it depends on how easy/hard will it be for the airflow from both units to reach all parts of the 1,276 sq ft house. It might suffice; but the safer option would be to get three 10,000 units, for example. Sorry, this is truly a difficult situation. Reply When buying an air conditioner, you should pay attention to the wattage and the BTU/h rating. In terms of air conditioning, this is referred to as cooling capacity - 1,000 BTU/h is equivalent to 293 watts. Calculations show that about 6800 BTU are needed for 20 square metres of space. Therefore, a 7000 BTU air conditioner or portable air conditioner is best suitable for small apartments that come with 46 square metres of space. As I’ve never had a/c it’s hard for me to imagine one handler cooling several rooms, even with the appropriate btu’s for square footage, thank you for your help! Reply

I’m trying to figure out the BTU size for a mini-split I want to put in an addition to augment the central air. The room is 12 x 19.5 with an open ceiling 12′ high at the peak and 7.5′ high on the east & west sides. It attaches to the rest of the rancher thru a 6′ x 6.5′ opening where a patio sliding door used to be. That door is now on the west wall of the addition, The south wall has two 5′ tall x 4′ wide casement windows on either side of one centered 5 x 6 bay window. Then there is a 5 x 5 casement on the east wall. Reply Thank you for the insight; I’m sure it will be most helpful for everybody who is experiencing similar problems. In short, the logic you’re using is very sound, you know exactly what you’re talking about. Have a cool summer! Reply In any case, one air handler just can’t produce enough airflow for the air to reach all the rooms. If it would, that indoor unit would be ‘windy’ and noisy. Having 3-zone mini split, or even 3 individual 12,000 BTU Mr. Cool DIY units would be most optimal. ReplyEnergy saving features. Timer switches, eco modes and sleep modes feature on most models. ‘Smart’ air conditioners will link to a smartphone app or voice assistant, enabling even more control over the room temperature. Scottish Highlands & Islands postcodes: AB, FK, HS, IV, KA, KW, PA, PH, ZE, LL58-LL78, IM, TR, PO30-41 Hello Marlene, we’re talking about a 336 sq ft space. If it were a normal room in an average climate, you would need about 8,000 BTU minimum to cool it sufficiently. Add hot Louisiane, sun exposure, and so on, and you get to as much as 14,000 BTU. In short, 14,000 BTU is adequate AC sizing in your situation. Reply

Thank you so much. I have my eye on that Mr Cool, but would really love the ceiling cassette. I think going for an 18k BTU unit would allow for me to go with a cassette size that would fit between trusses. Not completely DIY, but I can at least get everything done except the lines. This is wonderful information…Thank you! ReplyHello Edward, you’re correct, the 5,000 BTU unit is not enough. 23×25 master bedroom is 575 sq ft. Given that you’re in sunny California with 3 windows, even the 8,000 BTU might not be enough. For your situation, a 12,000 BTU or even 14,000 BTU would be recommended. Reply I have a 10,000btu window unit in there now that is just enough, but way too noisy. I have window coverings that are insulated.