You are right; the 15,000 BTU unit is definitely an overkill for a single room. If there is a hole in that wall, the air-conditioned air will reach both rooms. A 5,000 BTU air conditioner can effectively cool a room that measures 100 to 150 square feet, according to a basic industry standard. A unit that is too big will be less effective and offer reduced air conditioner efficiency. Window-mount 6000 BTU air conditioners are essentially meant for a single room; The List: X. Its 683 sq ft with an 11 ft ceiling. The living room itself is about 20’7″ x 12.1″. First of all, thank you so much for this website, it has so much useful information and I’m sure everyone who comes across it appreciates it very much. Is that extra 4000 BTUs necessary whether or not the kitchen is actually being used? Hello Sue, the 13’2” by 14’5” room has about 190 sq ft. Let’s assume that the cathedral ceiling has a height of 13 ft. Favorite Answer. Another thing you need to take into account is the length of the hallway; it’s 17.5 ft long. If you check those 3-zone mini-splits, you will see that the best one – with 36,000 BTU – is Senville SENA-36HF/T. Each indoor unit will be capable of providing a set number of BTU’s of cooling and heating power. Example: When you use the BTU calculator below and get let’s say 10,000 BTU for a 500 sq ft area, start looking for a 12,000 BTU air conditioner. Hello David, in most cases 8,000 BTU should be more than enough for a 240 sq ft room. With the added 1/2 ft of the ceiling and the 3 windows, you should probably check out 10,000 BTU units. I look on fans as efficiency boosters, not as mandatory links in the cooling chain, if you see what I mean. room by 7ft. An average 350 sq ft room would need a 7,000 BTU unit. This low-profile AC, by the way, also comes with a remote control and has an hourly dehumidifying rate of 1.8 pints. I have an enclosed patio room, it is 20 by 15′ with large windows on three sides. BTU in air conditioners is simple a metric of how much cooling effect that particular AC unit can produce. Get started . Room air conditioner sizing is all about matching the room size to the air conditioner size. SEER = (1 × EER100% + 42 × EER75% + 45 × EER50% + 12 × EER250%)/100, Total Heat (BTU/hr.) However, when we’re trying to estimate energy costs, it’s very useful to know how many watts does our particular air conditioner use. Order Status Create an Account Sign In. That’s why by knowing the square footage of the area we want to cool down, we can calculate how many BTU should our air conditioner have. Hello Tracy, for a big house with big rooms (bedroom, 2 other rooms), you can buy a multi-zone mini-split system. At just 41 decibels, the Quiet Temp™ room … What size are the 2 window units that are currently installed? The most important metric is the BTU value. 2- 130ft sq bedrooms 1- 48sq ft bathroom, living room and kitchen 338 sq ft and ceiling is 7 ft. The ceiling has a height of 8 ft. Do you think a 15,000 BTU unit would be an overkill? This air conditioner room size calculator, also known as an AC BTU calculator, will help you decide what size of air conditioner to buy so you can be efficiently cool (or heat) your room.Of course, the choice of brand and air conditioner type still depends on you; this air conditioner calculator can only provide you the recommended output power of the AC, in British Thermal Units per hour (BTU … The BTUs are more than adequate for the spaces, but the units are too old to work properly and need to be replaced. If you want to properly cool down a 300 square foot area (or room), you need a 6,000 BTU air conditioner. The AC unit will be for our living room. Your electricity bill will be a little higher but you won’t need to sweat if you bought an AC unit that’s too small. 115 V. Model. Using an air conditioner on a hot day can make the temperatures more bearable, but only if the air conditioner is big enough to cool the area you want it to. Air Conditioner Sizing Tutorial. As great as it is, unfortunately, it cannot be left in the window during cold winter. If you don’t use your kitchen, you can forget about that 4,000 BTU. P.S. Then there is a 5 x 5 casement on the east wall. air). If your room is 10’x 20’ (200 square feet), you’d need to look at a 6,000 BTU unit. I’m aware if I use 13,000 BTU, It probably cold more than enough but I concern about electricity bill. If you’re looking at a 12,000 BTU 220V model, there is a chance the same mini split is available with 115V and double the amperage. 2 x 10,000 BTU would make sense. Thank you. The local climate in Texas in, on average, hotter and therefore you should need an air conditioner with a few 1,000 BTU more. I live in southwestern Connecticut. Are you considering an 8000 BTU air conditioner? Hello Grace, for the (roughly speaking) 350 sq ft living room you would need a 7,000-8,000 BTU AC unit. I just bought a little single wide in Texas. Garage walls are foam insulated. Hope this helps. In your situation, a 14,000-15,000 BTU should do the job well. Such a combination, quite frankly, is hard to find; the most common 2 zone unit is 12,000-12,000 BTU. Pro tip: Always buy a little bigger AC unit than this recommendation. I’m looking to use a portable air conditioner in my garage. Do make sure, of course, to buy an AC unit that is a bit stronger if you have high ceilings, live in a hot climate, and have an above-average sun in those rooms. Hello Missy, 8,000 BTU is the optimum capacity. AC units above 15,000 BTU usually need an electric upgrade; which you won’t need here. GE AHQQ06LX Serenity Quiet 6,000 BTU Window Air Conditioner, White Room Size – Delivers 6150 BTUs to cool small rooms up to 250 sq ft Maximum Cool – 4-way air direction, 3 cooling speeds & 3 fan speeds for a cooling combination I’m also on a tight budget. Hello Jessica, you’re looking to heat/cool about 700 sq ft, divided among 4-5 rooms, including a kitchen. Considering this is for a normal housing with wood structure. $33.99 $ 33. At your … I am also thinking to add window films like reflective one to help cut down the sunlight and the heat. Simply put, it’s the capacity or power of the AC. Hello David, 15×15 and 12×13 rooms have a combined area of 381 sq ft. There is also a difference if you live in Texas or in New York. Relevance. The other is 12′ x 14′,what would you recommend for less energy used. Bathroom: 8′ x 8′ (northern exposure, I don’t bother to cool it). I want to buy a mini split ac system. Of the two choices, 8,000 BTU would be the optimum one. You might want to get an additional fan in order to create indoor airflow that will distribute the cool air evenly, even as far as the end of the hallway. Thank you for the useful advice. Hello Carlos, the 30,000 BTU mini-split will do the job very well. Two-zone 9000/9000 mini split would be the perfect solution here. Hello Meg, the total area to cool down is 560 sq ft. What do you think? The fans are also useful in order to distribute the cooled air throughout the apartment. Should I get the 8,000 btu? A room size of 150 square feet to 250 square feet can be adequately cooled by a 6000 BTU air conditioner. But not sure if this will be correct?? If, for example, you buy a 14,000 BTU portable air conditioner to cool down a 12×12 room, you will have chill cold room and more than $100/year unnecessary cost on your electricity bill. I fear that Midea will get lots of warranty calls next summer when these units fail. Hello Ron, for a 200 sq ft you would need a 5,000-8,000 BTU portable air conditioner. Read on for more details about different types of A/C units. 1-855-487-6949. Of course, other factors such as sun exposure and your location can significantly increase the size of the AC unit that would be most appropriate.