How much space can a 2-ton air conditioning unit cool? A 2-ton air conditioning unit is capable of cooling between 800 and 2,000 square feet of interior space. A building's energy efficiency, including air leaks, insulation and shading, and the climate it's located in impact how many tons of air conditioning are needed to cool it down. What is a 10000 BTU air conditioner? What is a 10-ton air conditioning unit? How do you troubleshoot problems with your air conditioner? The cooling capability of a central air conditioning units is measured in tonnage. A 1-ton unit can push out cool air at a rate of roughly 400 to 1,000 cubic feet per minute. Window air conditioners are generally labeled in British Thermal Units, or BTUs. A 12,000-BTU unit is the same as a 1-ton air conditioning unit. What is a 4-ton Carrier air conditioning unit? A 4-ton Carrier air conditioning unit is a split system residential air conditioner that can remove 4 tons of heat from a home in one hour.

How many BTUs do you need in an air conditioning unit to cool a 12 foot by 12 foot room? A 12 foot by 12 foot room will require an air conditioning unit with a cooling capacity of 5,000 British thermal units, or BTUs, according to the Energy St... How does a gas furnace work? A gas furnace consists of two parts, an outdoor air conditioning unit and indoor furnace that work together to draw in, heat and circulate winter air and c... What are some tips for HVAC preventative maintenance? Preventative maintenance tips for your heating, vacuum and air conditioning system include keeping the area surrounding the outside unit clean and free of ... Are ICP air conditioning systems energy efficient? Where can you find replacement fan motors? What are some HVAC codes? What is flex duct? What retailers sell Coleman furnaces? When should you replace your home's heat pump?Air conditioning professionals mathematically determine the proper unit size.

In the heat of the summer, one thing's sure to keep you cool and comfortable: a properly sized air conditioner. But buying an A/C unit can overwhelm you as you see all the available sizes, features and brands. The unit size is the most critical. An undersized unit will never cool your home enough, and an oversize unit is nearly as bad. why would an ac unit freeze upSquare Footage Estimations The simple way to calculate a home's air conditioner size is to use a rule of thumb. air handling unit standardsAccording to this common but somewhat inaccurate method, you need 1 ton of air cooling capacity for every so many square feet of living space. cost for hvac systemWhile there's some dispute over the exact amount, an often-used amount is 600 square feet.

A 2.5-ton unit, then, theoretically would fit a 1,500-square-foot home. Sizing Inaccuracies One problem with estimating air conditioning size based on square footage is that every home is different. An average home in Florida, for instance, needs more cooling power than if it was situated in Michigan. Given that even Energy Star provides a square-feet-to-BTU chart (with 12,000 BTUs equating to 1 ton), the estimation is valid for a homeowner to use -- but illegal for contractors. Never compare your home to a neighbor's similar-sized house. Manual J Calculations To obtain a precise calculation, you must consider your home's unique factors: What region is it in? How good is the insulation? What direction does the house face? Some websites use online calculators to enable you to perform a closer estimate. An HVAC professional can use the Manual J -- an engineering guide that precisely pinpoints the size you need. References Florida Solar Energy Center: How Contractors Really Size Air Conditioning SystemsEnergy Star: Properly Sized Room ACCentral Air Conditioner Prices: Cost Comparison of AC Brands, Sizes, Repair Costs, & High Efficiency Central AC Systems Photo Credits Jupiterimages/liquidlibrary/Getty Images Suggest a Correction

Written Upvoted by Loring Chien, Written You will find the below link very informative in regards to AC power and efficiency information (India-centric)Air conditioner selection: understand Tonnage, EER, COP and Star RatingIn simple termsI ton AC will remove heat equivalent to melt 1 ton of ice in 24 hoursThis is equal to 12000 BTU (British Thermal Unit) per hourThis is the cooling capacity rating found in most International (non Indian) AC specification sheets and websitesThis is equal to 3517 Watts per hourThis is the cooling capacity rating found in most Indian AC specification sheets and websitesBe aware... The sizing chart below is useful to help you determine your approximate central air conditioner size requirements. If you still need help, don't worry! Chat with or call one of our factory trained advisors to help get you the answers you need. As an alternative to the sizing chart below we offer MANUAL J - a professional load calculation based on your floor plan, location, and all variables.

Please follow the link below for pricing. The turnaround for this service is 1-2 days. MANUAL J Residential Load Calculation Air Conditioning Square Footage Range by Climate Zone In order to scientifically calculate the right central air conditioner size, you can perform a Residential Load Calculation. Another way to size air conditioners is to determine the system size that is currently in place. The manufacturers do not list the air conditioner size on the unit. The system capacity will be coded into the model number of the outdoor unit. For example, model CKL24-1 is a 2 ton unit. There are 12,000 Btu's per ton. The number 24 in the model number indicates the unit is 24,000 Btu's, divided by 12,000 Btu's per ton, equals 2 tons. 24,000 Btu's/12,000 Btu's per ton = 2 tons Use the following conversion information to determine your existing system size (use the system model number NOT the serial number) 18 = 1.5 tons 24 = 2 tons 30 = 2.5 tons

36 = 3 tons 42 = 3.5 tons 48 = 4 tons 60 = 5 tons When sizing air conditioners, be careful not to make the mistake of getting one that is too large. If the system you install is too large for the space, it will short cycle. In other words, the compressor will not run long enough to dehumidify the space and will limit your comfort. In addition, it will cycle on and off more frequently, increasing operating costs and reducing the system life. Proper air conditioner sizing is critical to optimize performance. If you're still unsure which system size is right for you, or if you're having difficulty downloading the Air Conditioner Size Calculator , please e-mail us or call us toll free number at 1-855-634-5588. Sizing air conditioners by phone is difficult but we can provide you with the tools to get you started. Heating Square Footage Range by Climate Zone Use the lower of the two numbers if your home is well insulated and the higher number if it is older or poorly insulated.

(Hint: Use the larger of the two numbers above if you're unsure of your home's insulation) Simply multiply the appropriate factor above by your home's total heated square footage to arrive at your approximate required heating capacity. For example, if you live in the yellow zone, your home is well insulated, and you have 2000 heated square feet, the equation will look like this: X .40 heating factor (from the chart above) 80,000 Btu actual output Then, to calculate the output on a gas furnace, multiply its efficiency rating by its listed input rating for the actual Btu output of heat. For example, if a furnace has a listed input rating of 100,000 Btu's and an efficiency rating of 80%, it will produce If the same 100,000 Btu furnace has an efficiency rating of 93% it will produce: 93,000 Btu actual output For this example, using an 80% efficient furnace, the 2000 square foot home above would require a 100,000 Btu input furnace which will produce the necessary 80,000 Btu's output of heat.

If you're still unsure which system size is right for you, please e-mail us or call our toll free number at 1-855-634-5588. An experienced design technician will be happy to assist you. Variables such as your insulation, type and number of windows, number of stories, construction type, etc. will greatly affect the required Btu's per square for both heating and cooling. A general rule of thumb is that if your home is well insulated with newer style windows, you can select the smaller size system that falls within your total square footage. If your home is two story it will place less of a load on the system in the downstairs area as the second floor acts as additional insulation. If your home is not well insulated, has older style windows, and/or a larger than average number of windows, you will want to select the larger system which falls within your square footage range. The less insulated and more windows within the environment, the more likely you will experience greater air and heat loss.