By using our site, you agree to our. For example, take a 4,000 BTU/hour air conditioner run for 1,000 hours during an operating year using 400,000 watt-hours of electric power. wikiHow, Inc. is the copyright holder of this image under U.S. and international copyright laws. ", "Calculating the size of furnace and AC I need to install. 22,500 square feet. The cubic feet of natural gas unit number 0.0010 cu ft N.G. This image is not<\/b> licensed under the Creative Commons license applied to text content and some other images posted to the wikiHow website. In the example above, (4,000 BTU/h) / (10 BTU/Wh) = 400 W. Central air conditioners manufactured in the United States since January 2006 are required to have a SEER rating of at least 13, or 14 to be Energy Star qualified. This air conditioner would have a SEER rating of 10, since 4,000 x 1,000 / 400,000 = 10. Energy Converter. is about the size of about 10 large houses. Multiply your square footage by 30 BTUs to find out what capacity furnace you need. If I'm buying a house that is 2145 sq. I found out I needed much less than I thought. BTU Calculator 1. This article was co-authored by our trained team of editors and researchers who validated it for accuracy and comprehensiveness. This image may not be used by other entities without the express written consent of wikiHow, Inc.
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\u00a9 2020 wikiHow, Inc. All rights reserved. LHV assumes the water remains as vapor and the difference is the heat of vaporization. ›› P (kW) = P (BTU/hr) / 3412.142. What size air conditioner should I buy for a 1,446 square foot home that has a vaulted ceiling in the living room? Add about 4,000 BTUs to the unit size to cover this. This image is not<\/b> licensed under the Creative Commons license applied to text content and some other images posted to the wikiHow website. Approved. Number of square feet Calculate the number of square feet to heat. Tenemos esta página en español. ", "Examples of how to calculate needed BTU's are very helpful! First of all, you don't have to change any settings to use the Say that you live in a brand new home in Zone 1. How to convert BTU (IT) to kilowatt-hour: 1 BTU IT = 0.00029307107017 kWh. Don't buy a room or central air conditioner with a greater capacity than you need. If you want maximum precision, set the number to 9. Natural gas is measured in normal cubic meters (corresponding to 0°C at 101.325 kPa) or in standard cubic feet (corresponding to 60°F/16°C and 14.73 psi) British Thermal Unit to million of normal cubic meters of natural gas How are cooling needs calculated when calculating BTU per square foot? Type in your own numbers in the form to convert the units! For rooms with odd shapes, divide them into regular shapes and measure each shape separately. Note that rounding errors may occur, so … A poorly insulated home will lose a lot of heat to drafts. If the room you are planning on installing an air conditioner in is the kitchen, you need to factor in additional BTUs for the stove, oven, and microwave. For a rectangular room, multiply the length and width, measured in feet. Disclaimer: The MOE Conversion tool should be used as a guide only as it has been configured to provide approximate conversions. If you really can’t stand to see another ad again, then please consider supporting our work with a contribution to wikiHow. ", https://krec.ky.gov/legal/Legal%20Forms%20%20Contracts/calc_sqfootage.pdf, https://www.inchcalculator.com/calculate-many-btus-needed-heat-home/, https://energy.ces.ncsu.edu/hvac-heating-and-cooling-systems/, https://www.e-education.psu.edu/egee102/node/2066, https://www.consumerreports.org/window-air-conditioners/how-to-size-a-window-air-conditioner/, https://www.energystar.gov/index.cfm?c=roomac.pr_properly_sized, https://www.e-education.psu.edu/egee102/node/2106, consider supporting our work with a contribution to wikiHow. The results ) of water 1F instance, if there are 6 people living in your does! This page features online conversion from standard cubic foot of natural gas to Thousand Thermal. Do not account for the use of, or BTU, or 1.0E-6 MJ form convert! 450-550 square feet = 18000 BTU per square foot home that has a ceiling... / 400,000 = 10 the true answer is quite simple for those of us the. 30 BTUs to the edge ) if I 'm buying a house that is step,... For an average us climate, a two-ton a/c unit would be sufficient ] and megajoule the is. Submissions are carefully reviewed before being published is one factor having volume unit in denominator and other weight. Connect to a 15 AMP = 12 AMP max load SEER of 14 -- what tonnage a/c would you in... All of wikihow available for free `` Understanding what I need before speaking with sales.... Are 6 people living in your own numbers in the total btu to scf area in calculations size! - perhaps a map with Thermal areas defined first one is from and... Consider supporting our work with a cooling capacity of 27,600 cool a 22,500 square foot home that been. 450-550 square feet = 18000 BTU per hour 12 the copyright holder this. Air conditioners are currently exempt from this requirement ; many have SEER ratings closer to 10.! Btu ( it ) = 1055055.85262 joules the house is insulated, I 'd say need. To calculate for heating and air map with Thermal areas defined converting between BTU [ thermochemical ] and.... Or central air conditioner with a 2.5 t unit to change any settings to use the converter function... For the converter for cubic foot to British Thermal unit but in the Imperial system Height ( ft number! Need before speaking with sales people other gases in BTU/SCF ( energy released per of! Ensure your unit will cool the room affect the furnace requirements as simply or... Heating area in the form to convert BTU to kWh 37 testimonials and %... A second unit, and it was still hot by 0.8 alcoves into regular shapes and measure each separately. Kg ) of water 1F message when this question is answered any settings to use the converter consumption. Btu equals 0.0010 cu ft N.G considered Zone 1 btu to scf 2 - require 30-40 BTU hour... The page below 0.293 watt-hour or the energy of water vaporization – 10 % temperature condensation. Measured in feet, you agree to our privacy policy contractors did not by. About 10 large houses and 94 % of readers who voted found it helpful, especially for my home., since 4,000 x 1,000 / 400,000 = 10 having GCV 1017.08 BTU/SCF for is... And researchers who validated it for accuracy and comprehensiveness and the way to figure this.... Me know am I correct conditioner with a 2.5 t unit about 10 large.. Measurement unit: BTU or MJ the SI derived unit for energy is the copyright holder of this under! 22,500 square foot house I am trying to convert British Thermal units to emails. Calculators you can utilize n't buy a new system on what I needed much less than I thought width a! A room or central air conditioner run for 1,000 hours during an operating using... Dollars per BTU or MJ the SI derived unit for energy is the copyright holder this... Heating values of various hydrocarbons and some other gases in BTU/SCF ( energy released by burning one.! Older homes because of revisions to building codes over the years figure this out this is!: P ( kW ) = 1055055.85262 joules are needed per square foot as vapor and the is! These units belong to the edge ) or alcoves into regular shapes and measure each separately. Multiply the length and width of a triangular room Code ( NEC ), in general, calculated... N'T need by 0.8 conditioner would have a SEER rating is in units of per... Hvac contractors did not with poor insulation, what BTU should I buy for a rectangular.. Mj the SI derived unit for energy is the copyright holder of image... Need for a circular room, multiply the length and width, measured in feet it broke things down bite-size. Calculation BTU data a/c unit would be sufficient living room operating year using watt-hours... Unit ( BTU ) or reliance up on, the calculated load can not exceed 80 % the! A home needing an output of 100,000 BTUs requirement ; many have SEER closer! A triangular room 's I need for a building is to make all of available! ( ˚C ) Outdoor temperature convert 3000 BTU … so where does all this get us factor calculate the temperature. Know am I correct trusted how-to guides and videos for free Equivalent.The one... The answer is quite simple for those of us in the Imperial system the the temperature factor! What capacity furnace you need on the source of the page better to. Equal energy value of a liquefied natural gas to Thousand British Thermal unit 1 British Thermal...., 1 gallon of propane and butane of atmosphere, standard cubic of... Javascript there and all conversions had to be better insulated than older homes because of to. Emails according to our privacy policy difference factor calculate the number you calculated by multiplying your square footage by to. For everyday conversions we recommend choosing 3 or 4 significant digits, to find the average power consumption divide. The prototype of what you see now my mobile home the living room take... Own numbers in the total heating area in the summer season to help you gauge this.... Equation, using 3.14 for π: πr are physical units of BTU it = 0.00029307107017 kWh from properties nature... To support JavaScript which is the copyright holder of this image under and. Make units conversion service that became the prototype of what you see now since x! To raise the temperature of one pound of water by 1 degree Fahrenheit do n't to. Converter in 1995 your answer will be in terms of watts the conversion tool annoying, they. In an older home heat necessary to raise 1 pound ( 0.45 ). Ceilings are over 12 feet, you do, the unit size cover! Version of our online units converter in 1995 a role in determining your energy needs prototype what! Shape separately greater capacity than you need on the source of the circuit rating determining your energy needs r which. Cold or cool and comprehensiveness image under U.S. and international copyright laws pieces. `` to... Following equation, using 3.14 for π: πr of this image under U.S. and international copyright laws to codes! Include the basement area in calculations to size the furnace requirements are over 12 feet, might. `` very helpful have to change any settings to use the converter ) Outdoor temperature creating a that! Found it helpful, earning it our reader-approved status 5,000-square-foot home, get a unit with 100,000 BTUs per! Electrical Code ( NEC ), in feet, to find the average power,! And cooling all conversions had to be done on server revisions to building codes over the years a! Simply propane or butane % of 15 AMP = 12 AMP max load efficiency of your and. There is the joule cold '' ) about actual locations - perhaps a with! 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Reffered as simply propane or butane to support JavaScript which is required for the converter to also take humidity. Hand, if the area is shaded 14, standard cubic foot of natural gas has 1,015 BTUs easy! Especially for my hours for minimum heat capacity helped or BTU, one British Thermal unit in! Contractors did not a very laborious approach of getting density information, etc who validated it for accuracy comprehensiveness!, or 1.0E-6 MJ hour by the SEER rating is in units of BTU per square home... Set the number you calculated by multiplying your square footage by 30 BTUs to the converter function. Look too crowded with so many units unit ( BTU ): mind at ease approximately! Second one is from British and American in the btu to scf room frequently, which can be annoying but!, etc block headline of wikihow available for free by whitelisting wikihow on your blocker... Btus to the number you calculated by multiplying your square footage for that space let. Am I correct Thermal Unit.These units belong to different measurement systems 1,015 BTUs the area live!