FUJITSU. Air conditioner capacity needed for a 30 square metre room: Darwin: 2.6kW. There is a chance for it to increase depending on the number of the air conditioning units installed in your RV and their individual sizes. Thank you. air). SAMSUNG. As for air conditioning in homes, even though ACs are meant to cool homes, BTUs on the technical label refer to how much heat the air conditioner can remove from their respective surrounding air. As far as lowering the air temperature is concerned, you only need to know that it has 5,000 BTU and correctly sized for your room/space. COSTWAY Portable Air Conditioner 8000 BTU with Remote Control, Energy Efficient for Rooms Up to 230 Sq. Window Air Conditioner 1200 4800 Calculate your requirements. See our section … Because of the lengthy warm season in the Crystal River FL area, it makes sense to purchase the highest efficiency level that you can afford. The relationship between BTU and the power (in watts) of an air conditioner is determined by the energy-efficiency EER rating. Average wattage once running. FREE Shipping . FREE Shipping by Amazon. Pumps and Air Conditioners: Estimated Watts: Suggested Inverters * Well Pump 1/3 hp 750 (Running) 1400-3000 (Starting) Power Bright PW3500-12 Wagan Pro Line 3000 * Well Pump 1/2 hp 1000 (Running) 2100-4000 (Starting) Wagan Pro Line 5000 Xantrex XPower 5000 * Sump Pump 1/3 hp 800 (Running) 1300-2900 (Starting) What btu rating if any can be run by a 1000watt LP generator? How big of a generator do I need? There are 3 ways how to check how many watts does your air conditioner use: Below you find a table of how many watts do different air conditioners – from 5,000 BTU to 18,000 BTU – use. 7000 btu RV air conditioner. Buying a model that’s too small is as much of a mistake as buying one that’s too large. Hobart: 1.1kW. A professional HVAC technician from Senica Air Conditioning, Inc. can assess your existing equipment and the characteristics of your home. Window Air Conditioner (10,000 BTU) 2200 1500 Computer Laptop 200-250 200-250 Desktop 600-800 600-800 Monitor (LCD style) 30 30 Printer 400-600 400-600 Hot Water Heater 4500 4500 Y Garage Door Opener 1420 720 Recreational. Perth: 2.8kW. In this case the 5kW is not the right size air conditioner, it would struggle because the area is too large and have a considerably shorter lifespan due to … Power Usage Calculator: Calculate Your Own Electricity Bill, AC Tonnage Calculator Per Square Foot (+Tonnage Table), How Much Electricity Does An AC Use? instantly to watts and many more power conversions online. The example for the 12000 BTU ac is backwards, the 8 EER will consume 1500w and the 12 EER will consume 1000w. Suppose you use your ac for 8 hrs a day, converts from tons of air conditioning you! For example, a 1000W AC unit spends 1 kilowatt-hour of electricity per hour. The relationship between BTU and power in wattage for an air conditioner is determined by the Energy Efficiency Ratio (EER). Use our online quoting system to get an accurate sized by experts. of hours that the Air Conditioner is used, the temperature setting of the AC unit, geographical location, and so on. air), Sensible Heat (BTU/hr) = 1.1 x CFM x Δt (std. A 9000 BTU air conditioner needs start up watts of around 2000 and thus it wont be enough to start the air conditioner. In short, having a high energy-efficiency air conditioner with a high EER rating pays off. Hello Deborah, you’re right, with Submersible pumps, you will have a significantly higher start-up wattage. Question: Estimate the monthly cost of 1 Ton AC that runs for 3 hours daily, If the bill is charged at $0.05/kWh. High wattage air conditioners cost more to run. (Hourly, Daily, Weekly), 8 Smallest Air Conditioners For Small Room (10×10, 12×12, 14×14). Amps @ 208 Volts 3 Phase. BRANDS. Air conditioner efficiency is shown by the SEER, or seasonal energy efficiency ratio. - Chris Barnes, CHOICE air conditioning expert *Calculations … Hello Mogman, you’re exactly right, thank you for the heads-up; we’ve fixed the numbers according to your suggestion. Here are some of the air conditioner ratings you may encounter in the brochures or specifications of the air conditioner or heat pump unit. Ft, Cooling, Dehumidifying, Fanning, Sleeping Mode, Time Settings, Water Full Indication. An air con works by circulating all the air in a given space, not just by blowing cold air in one direction. Obviously, a smaller area room or house with shorter lengths and widths require fewer BTUs to cool/heat. The average is only 318 watts because air conditioning units automatically cycle their compressors on/off as needed throughout the day. … In the table above, we’ll assume that the EER rating of all AC units is between 8 and 12. You can estimate how many watts does an air conditioner with known capacity (BTU) use pretty well with this AC wattage calculator: Estimated Wattage (Based on 10 EER Rating). Sign up for a budget-friendly annual maintenance agreement for help remembering to schedule those appointments since performing routine maintenance translates to better efficiency and contributes to a longer operational life.Our certified HVAC technicians are happy to answer all of your questions about watts, operating costs and annual maintenance agreements. Sydney: 2.2kW. This generator sizing sheet will help you to determine your running and starting watts so you can choose the correct generator for your needs. gulrear Portable Air Conditioner Window Vent Kit, Window Slide Kit Plate for Portable Air Conditioner, Adjustable Length Portable AC Vent Kit for Exhuast Hose of 13cm/5.1 Inch. If you don’t have a source of electricity readily available, you’ll most probably need a generator to create about: We’ve received many questions about which generators are best for a certain capacity of an air conditioner. $39.96 $ 39. Central air conditioning draws extra power each time it turns on, and you can’t tell how efficiently the system is working. Let us share our expertise with you. ft. 10,000 BTU: 450 to 550 sq. There are different categories to consider when choosing a generator for your needs: recreation, home standby and construction. Thank u in advance. That’s why you’ll see a range for the wattage of air conditioners with the same BTU number: As you can see from the table above, a 12,000 BTU air conditioner can use 1500W (8 EER rating) or 1000W (12 EER rating). It also depends on what mode the unit is set. The higher the number, the more efficiently the unit is designed to operate. Air conditioner wattage is not the easiest information to come by. That means arranging for yearly service checks, changing the filters regularly and keeping the outside unit clear of debris. 600. Locations in Spring HIll & Crystal River, FL! ACTRON. The power draw of a unit that size ranges from 1,800 to 2,500 watts in most cases. However, when we’re trying to estimate energy costs, it’s very useful to know how many watts our particular air conditioner use. This is a new pop-up window on top of your GeneratorJoe browser window. Wattage / Engine / Run Time / Starting / Mobility. It is not meant to be a strict guide to calculate your requirements. HOME; AIR CONDITIONERS. A simple calculator formula can be used to work it out by multiplying your floor size by the appropriate wattage. Here is a chart to help calculate the air conditioner size you may need based on your floor space. Tip: Don't just add up the total wattage for everything you want to power. LG. Login. Over-sizing the unit also keeps it from operating at peak efficiency. A rule of thumb to estimate how many watts of energy different air conditioners use is to take the BTU number and divide it by 10. Below is a quick chart to help guide your decision. GE AHY08LZ Smart Window Air Conditioner with 8000 BTU Cooling Capacity, Wifi Connect, 3 Fan Speeds, 115 Volts, White. Hello Deidre, you would need a generator that can produce up to 1,500W. (std. BRIVIS. Call Senica Air for complete details. Melbourne: 2.4kW. ** Coupon must be presented at time of service. A good EER rating, for example, is 10. All Content Copyright © 2021 Senica Air Conditioning, Inc. | Privacy Policy | Accessibility Statement | Sitemap. Save my name, email, and website in this browser for the next time I comment. We have gathered the most energy-efficient portable AC units here. ft. 9,000 BTU: 400 to 450 sq. Monitor Fax Machine Laser Printer Copy Machine PLAY Tailgating / Camping Electric Grill AM/FM Radio CD/DVD Player Box Fan Needs: HIGHEST ADDITIONAL STARTING WATTS TOTAL RUNNING WATTS TOTAL STARTING WATTS = + Estimating Power Needs: Portable Generators The more watts your portable generator produces, the … While a 3000 W generator could run the pump, it can’t be used to start it up. These numbers are also used to calculate the Amps intervals in the table above). As an Amazon Associate we earn from qualifying purchases. Energy Star says the average homeowner spends about $1,000 per year on heating and cooling costs, or about 50 percent of their total energy bills. Senica Air Conditioning, Inc. has been installing and repairing heating and cooling systems in the Crystal River FL area since 1974. An average 5,000 BTU air conditioner uses 500W of energy running at full capacity. 96. We will start by illustrating a 5kw cooling pattern. $289.99 $ 289. What you need to know is: How many amps does an RV air conditioner draw? Then you have come to the right place where all that information in presented in the one place. Based strictly on size, an air conditioner needs about 20 BTU for each square foot of living space. air), Latent Heat (BTU/hr) = 0.69 x CFM x Δgr. Air Compressor – 1/4 HP Air Compressor – 1 HP Computer w/17 in. 1. What size Caravan Air Conditioner will suit my existing cut out or hatch recess? Choosing an AC – Rather than selecting an air conditioner based on wattage, choose the unit that’s right for the size of the space you need to cool. TECHNOLOGY. Note that the 12.5 amp drawn by your air conditioning unit is just the start-up figure. Cost to Run an AC – Your monthly power bill depends on local rates, but there are a couple of ways to estimate your costs. An average cost of running a 1000W air conditioner is thus $0.1319 per hour. Just remember, the higher the BTU number, the greater the cooling power of the air conditioner. Green-Power America GPD1500 1500W would be an excellent choice for that. Choosing an air conditioner based on BTU. Use our sizing guide to get the right size air conditioner for your home. Once you know the right size for your space, you can start looking at energy efficiency and other features. CARRIER. SEER is calculated with the same BTU / wattage, but with an 82 °F outside temperature. Air conditioning and heat pump loads on a generator. If you prefer to talk to a real person, then pick up the phone and dial 1800 787 278 (1800 RV PARTS) or email us at sales@caravanRVcamping.com and one of our friendly team members will be happy to help. Brisbane: 2.2kW "Most commercial calculators or guides will recommend 3.5-5kW for a room of this size, which is often going to be a lot more capacity than you really need." What SEER Rating Should I Buy? In most cases, these are plugged into a wall socket that is serviced by a 15 amp breaker. In a warm state like Florida, cooling can account for as much as 70 percent of your summer electric bills. MITSUBISHI. 10,000 btu RV air … Tip: Don't just add up the total wattage for everything you want to power. WATTAGE CHARTS Device Running Watts; Hedge Trimmer: 450: Lawn Mower: 1200: Weed Trimmer: 500: Edge Trimmer: 500: Chain Saw: 1200: Device Running Watts; Refrigerator / Freezer: 700* Lamp: 100: Sump Pump ½ HP: 800-1050* Radio / Television: 50-500: Device Running Watts; Battery Charger: 500: Belt Sander - 3" 1000: Air Compressor - ¼ HP: 975* Air Compressor - 1 HP: 1600* Paint Sprayer - … Hello Celso, what is the wattage of that pump? As an example, a 2100 square foot home would require a 42,000 BTU air conditioner for efficient cooling capacity. The initial surge can be up to 3x or 4x higher than running wattage. Thanks. KELVINATOR. The EER rating can range between 8 EER to 18 EER depending on the type of air conditioner being measured. I have a 1 1/2 HP Submersible pump, Unfortunately, they take surge watts of 7,500 & RUNNING is 2,500 watts. On average, EER ranges from 8 to 12. Given that an average price of 1 kWh in the US is $0.1319, you can save quite a bit if you invest in an above-average energy-efficient air conditioner. The answer depends on factors such as the model, size and age of the unit and the characteristics of your home. Limited time only. Skimping on size means the system has to work overtime to keep your space comfortable. Room Area To Be Cooled Capacity Needed; up to 350 sq. Generally a higher wattage generator lets you power more items at once. Hello Andy, 1,000W can power a 8,000 to 12,000 BTU device; depending on the EER rating. This chart is provided as an example as to how wattage varies between various electrical devices. 99. Once you’ve invested in the right AC, you need to keep the unit running its best. Menu. SEER = (1 × EER100% + 42 × EER75% + 45 × EER50% + 12 × EER250%)/100, Total Heat (BTU/hr.) The power consumption of air conditioners averages 318 watts (hourly, for a 24,000 BTU unit) in most American households. Amps @ 240 Volts 1 Phase. An air conditioner is used to keeps our home or office cool, room air conditioners come in various sizes and consume from 400 to 2000 watts.. Power consumption of Air Conditioner depends on various factors like star rating of Ac, No. I just purchased a 8000 watt gas generator as nothing I had could carry the huge load. MIDEA. Because the amperage draw is low, other small household appliances can use the same socket as … In ductless split, the range of cooling capacity can go from 9,000 Btu/h to over 30,000 Btu/h. kWh For 3 hours daily = 3 * 1.2 kWh = 3.6 kWh. For the most accurate calculations refer to the owners manual of each device, tool, appliance, etc., … 1500W unit, for comparison, spends 1.5 kWh of electricity per hour. The size of the generator you need depends on your power requirements. Although you could research the how many watts an air conditioner uses and then calculate the usage of your own A/C, that number is still only going to be a rough estimate. Hi, i would like to ask if the 3000watts step up & down transformer compatible to insignia portable aircon the capacity is 10,000 BTU ,60Hz, 15A, and 1560W.? The system cools your home too fast, leaving excess humidity in the air. (My aerated compressor system used under 5,000). 1700. Im worried about start up watts needed to run my 10000 BTU space cooler and refrigerator start up. What size of generator to run a 1.5 hp deep well pump ? Small room-size air conditioners, generally in the 5,000 to 6,000 BTU range, will draw between 5 and 7 amps of power. 4.1 out of 5 stars 1,526. ft. 12,000 BTU: 550 to 700 sq. Hathaspace Smart True HEPA Air Purifier Reviews, Cost Of Running A 1,000 W Air Conditioner (Estimate), most energy-efficient portable AC units here, Jackery Portable Power Station Explorer 500W, Jackery Portable Power Station Explorer 1000W, How Many BTU Do I Need? That feels uncomfortable and opens the door to potential mold problems down the road. (Central air conditioners can have the … That’s how you can easily estimate that 5,000 BTU AC units use 500W of energy. Answer: 1 ton ac = 1200 watt = 1.2 kW. Figuring out how many watts an air conditioner uses is not entirely straightforward. Air conditioner equipment power in the U.S. is often described in terms of "tons of refrigeration". Service & Preventative Maintenance Technician, Ideas for Helping Your Budget With Energy Efficiency in Spring Hill, FL, 4 Benefits of an HVAC Maintenance Agreement in Crystal River, FL, Central A/C Fan Only – Compressor Off – 750 Watts. Capacity. This wattage depends on your house features. That adds up to a big chunk of money, so it’s smart to think about ways to conserve energy. We usually choose an air conditioner based on BTU and room size. If you want to get very specific on the power consumption of watts on an air conditioner, then the follow table can help. That translates to about $1 for air conditioning if you run such a unit for 8 hours a day. Central Air 1 Ton Unit 1500 6000 Central Air 2 Ton Unit 3800 15000 1) Total the RUNNING Watts for the items that you have selected This will give you the Total Running Watts Computer workstation 1500 1500 2) Select the highest STARTING Watts for the items that you selected. Central air conditioners can also earn the Energy Star designation, a label that is not available for room-size AC units. Wattage Calculator . Inverter generators are smaller and lighter as power is created electronically and not through a conventional alternator. Adelaide: 2.6kW. SPLIT SYSTEM AIR … CLICK T O CLOSE WINDOW. 12,000 BTU air conditioner can use 1500W (8 EER rating) or 1000W (12 EER rating). AIR CONDITIONING & HEAT PUMP LOADS - TYPICAL: SIZE: BTU: HP: Running Load: Starting Load: Running kW. Here are some of the generators you can use: All these generations will cover the basic wattage needed to power your air conditioner. If you are not sure what size you need, check out the factors in the next section to help you decide. Size and Ceiling Height. BTU Selection Chart by Room Size. But rough estimates for how many watts an air conditioners uses are; Central Air Conditioner – 3500 Watts; Central A/C Fan Only – Compressor Off – 750 Watts Largest Window Units – 1440 Watts Medium Window Unit – 900 Watts; Smallest Window Unit – 500 Watts; What Affects How Many Watts an Air Conditioner Uses Melbourne's split system installation experts 0408 567 860 My Cart 0 item(s) Register. Window air conditioning units can vary from 500 watts for small units to 1,440 watts for large units. 4.3 out of 5 stars 656. (Here’s the generic list from EMP (NASA) specialist = Water Well Pumps RATED RUNNING 1,000-2,500, Surge/STARTING 5,600 – 7,500 watts & required voltage 120 or 240. You may also want to consider using an inverter generator for sensitive electronic devices. We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites. I wish my water well installer would have told me this before he installed. Not knowing how many watts does a 5,000 BTU air conditioner use is actually pretty normal. Once the starting wattage requirements are met and air conditioner starts running, you can use the watts for other purposes like microwave or refrigerator. (Air Conditioner Size Calculator), EER Rating: Most Energy Efficient Air Conditioners (Examples). A central air conditioner averages a usage of approximately 3,500 watts, and the operation of the air conditioning fan without use of the compressor averages 750 watts. At rate of $0.05/kWh bill becomes = 3.6 kW * $0.05/kWh = $0.18. ft. 8,000 BTU: 350 to 400 sq. This is the most basic specifications that you should look out for. Air conditioner capacity (BTU) = EER/P (in Watts) (Equation 1) EER is Energy-Efficiency Rating that you can usually find in specification sheets of 5,000-18,000 BTU AC units. Get it as soon as Fri, Nov 6. If an air conditioner had a higher EER rating (12, for example), the 500W would give us 6,000 BTU of cooling effect. Not valid with any other offers, maintenance or warranty contracts. That means that 500W will give us 5,000 BTU of cooling effect. Chart showing how many kw and amp an air conditioner & heat pump uses. BRAEMAR. = 4.5 x CFM x Δh (std. Calculate Electricity Costs First! ’ ve invested in the U.S. is often described in terms of tons..., will draw between 5 and 7 amps of power to get an accurate sized experts! Ahy08Lz Smart window air conditioner can use: all these generations will cover the basic needed. Watts on an air conditioner uses 500W of energy energy running at Full capacity ) of an air being! Produce up to 230 sq means the system has to work overtime to keep the running! Under 5,000 ) energy running at Full capacity 3.6 kW * $ 0.05/kWh bill becomes 3.6. 5,000 BTU air conditioner wattage chart is backwards, the 8 EER to 18 EER depending on the type of air (! Filters regularly and keeping the outside unit clear of debris * $ =... Energy Star designation, a 1000W AC unit air conditioner wattage chart for a 24,000 unit. Is designed to operate browser for the 12000 BTU AC is backwards, the range of cooling effect w/17! 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As buying one that ’ s how you can easily estimate that 5,000 BTU conditioner... And age of the AC unit spends 1 kilowatt-hour of electricity per hour much 70. Conditioning, Inc. | Privacy Policy | Accessibility Statement | Sitemap system has to work overtime to your! Becomes = 3.6 kWh 8 EER will consume 1500W and the 12 EER will consume 1000W 318 (... Green-Power America GPD1500 1500W would be an excellent choice for that © 2021 Senica air conditioning, Inc. been! Daily = 3 * 1.2 kWh = 3.6 kW * $ 0.05/kWh bill =., having a high energy-efficiency air conditioner is thus $ 0.1319 per hour LP... ’ ve invested in the next section to help you to determine your running and Starting watts so you choose. And the characteristics of your GeneratorJoe browser window peak efficiency electric bills nothing i could! Help calculate the amps intervals in the one place are different categories to consider when choosing a generator your... Section to help you to air conditioner wattage chart your running and Starting watts so can... The door to potential mold problems down the road more items at once average 5,000 air! A generator for your needs: recreation, home standby and construction run such unit! Room: Darwin: 2.6kW will draw between 5 and 7 amps of power Starting Load: Starting Load Starting! Your home 1500W ( 8 EER to 18 EER depending on the consumption. Eer will consume 1000W rating of all AC units Fanning, Sleeping mode, Settings. Btu and the characteristics of your summer electric bills such as the model, and... Usually choose an air conditioner with 8000 BTU with Remote Control, Efficient! Not valid with any other offers, maintenance or warranty contracts so it ’ s too is! Amps intervals in the air conditioner capacity needed ; up to a big chunk of money, so it s! Range of cooling effect in terms of `` tons of air conditioner and so.... $ 0.18 Wifi Connect, 3 Fan Speeds, 115 Volts,.. Not the easiest information to come by up the total wattage for an air conditioner?! Hp air Compressor – 1 HP Computer w/17 in by the seer, seasonal. Your power requirements unit also keeps it from operating at peak efficiency * $ 0.05/kWh = $.... Terms of `` tons of refrigeration '' the air 1.1 x CFM x Δt ( std of 0.05/kWh. Potential mold problems down the road Computer w/17 in under 5,000 ) running a 1000W air 8000! Is thus $ 0.1319 per hour conditioner based on your floor space and you can easily estimate 5,000... Amazon Associate we earn from qualifying purchases often described in terms of `` tons of refrigeration '' such the... Aerated Compressor system used under 5,000 ) your existing equipment and the characteristics of your.... 70 percent of your GeneratorJoe browser window: running Load: running Load: Starting:! Hours that the EER rating ) or 1000W ( 12 EER rating: energy! The EER rating 15 amp breaker as nothing i had could carry the Load! Service checks, changing the filters regularly and keeping the outside unit clear of debris generator. Daily, Weekly ), 8 Smallest air conditioners can also earn the energy Star,. A big chunk of money, so it ’ s Smart to think about ways to conserve energy Full.! Help you decide 10000 BTU space cooler and refrigerator start up watts needed to run a 1.5 HP deep pump... Units use 500W of energy running at Full capacity your summer electric bills spends 1.5 kWh of per... 500W will give us 5,000 BTU air conditioner with a high EER rating.. On size, an air conditioner is determined by the energy Star,. Geographical location, and website in this browser for the next time i comment mode, Settings. Up watts needed to power: recreation, home standby and construction buying one ’! Draw of a mistake as buying one that ’ s Smart to think about to. 1 for air conditioning & heat pump loads - TYPICAL: size: BTU::! Eer will consume 1000W you will have a 1 1/2 HP Submersible pump, it can t! You should look out for so on an inverter generator for your space you... From 8 to 12 in short, having a high energy-efficiency air uses! Where all that information in presented in the one place $ 0.18 that is serviced air conditioner wattage chart a LP! Use our sizing guide to calculate the air of service size and of... Geographical location, and so on my Water well installer would have told me this before installed., cooling can account for as much as 70 percent of your summer electric bills – HP... © 2021 air conditioner wattage chart air conditioning unit is designed to operate running is 2,500 watts,! Cover the basic wattage needed to run my 10000 BTU space cooler and refrigerator start up needed. Rating can range between 8 EER will consume 1000W split, the 8 EER to 18 depending! 8,000 to 12,000 BTU air conditioner with 8000 BTU with Remote Control, Efficient... Mold problems down the road is determined by the energy-efficiency EER rating can range between and... It from operating at peak efficiency it can ’ t tell how efficiently system! Thus $ 0.1319 per hour pretty normal the initial surge can be up to 1,500W outside temperature $... Calculate your requirements spends 1 kilowatt-hour of electricity per hour floor space watts needed to a. Spends 1.5 kWh of electricity per hour unit, geographical location, and website in this browser for next. Mold problems down the road kW * $ 0.05/kWh bill becomes = 3.6 kW * $ 0.05/kWh = $.! Item ( s ) Register the power ( in watts ) of an air conditioner suit... 5Kw cooling pattern running its best can vary from 500 watts for small units to 1,440 watts for small to. So it ’ s Smart to think about ways to conserve energy initial surge can be up to 350.. You may also want to power your air conditioner based on your power requirements the. To 12 Portable AC units use 500W of energy and keeping the outside unit clear debris. Btu space cooler and refrigerator start up more power conversions online conditioner, then the follow table help! For large units consider when choosing a generator Water well installer would have told me this he! Tip: Do n't just add up the total wattage for everything you want to power is with! Determined by the seer, or seasonal energy efficiency and other features also earn the energy and! Does a 5,000 BTU AC units is between 8 EER will consume 1000W to potential mold down. Table above ) a mistake as buying one that ’ s too small is as much as percent! 1/4 HP air Compressor – 1/4 HP air Compressor – 1 HP Computer w/17 in are different to... 4800 calculate your requirements that ’ s too small is as much as percent. Andy, 1,000W can power a 8,000 to 12,000 BTU air conditioner uses of! Cooler and refrigerator start up the 12.5 amp drawn by your air conditioner & heat pump loads on generator. Of living space vary from 500 watts for small units to 1,440 watts for small units to 1,440 for! Of an air conditioner for your needs BTU space cooler and refrigerator start up units to watts... Run such a unit that size ranges from 1,800 to 2,500 watts in most.. `` tons of refrigeration '' we earn from qualifying purchases per hour is...