Air Conditioner BTU Chart. The chart below is a great starting point for sizing your AC. These BTU calculations are based on a standard room with 8-foot ceilings, two windows and one door. If the room has more …To find the size of Air Conditioning required for your daytime living area, you need to start by finding out its area. This is SIMPLE. Begin by taking the length and width of each room and multiplying them. Then, simply add the area of each room to get an answer in square metres. A general formula is Room Size (m2) x 150watts = AC Size.Above calculator shows you the result of tons to BTU. And formula of ton to BTU is, BTU= (Ton * 12,000) Example, if you have question- 1.5 ton ac is equal to how many BTU? You need 18,000 BTU in this case. Calculation: BTU= (1.5*12,000) = 18,000 BTUAn air conditioner tonnage calculator is a useful tool for homeowners and contractors to accurately determine the size of the air conditioning unit that is needed for any given space. This helps ensure that the correct unit size is purchased, which in turn can help save money on energy bills by avoiding over or under-sizing an AC unit.Here are some of the common HVAC Questions that most users of air conditioners or heat pumps asked. Expert Advice On Improving Your Home Videos Latest View All Guides Latest View A...AC Tonnage Chart. If you know the height of your room ceiling, you can get an even more accurate idea of the AC tonnage that you need with online AC tonnage calculators. It doesn’t even matter whether you’re looking for a window or split AC ton calculator. You can use any but this AC capacity calculator from Carrier is particularly useful:1,000 - 1,200 sq. ft. small home, 3-4 bdrm apartment. 24,000 BTU. 1,400 - 1,500 sq. ft. medium home, 4-bdrm apartment. 30,000 BTU. 1500 - 1700 sq. ft. medium home, 4-bdrm apartment. Now, let’s discuss how this table will help you choose the right size air conditioner for the room or zone you want it to serve.Split AC; Light Commercial Air Conditioner; Industrial HVAC; Upcoming; Mobile. Smart Phone; Feature Phone; Accessories; ... BTU Calculator ... Step 4; Step 5; Step 6; Step 7; Result; Room Size (রুমের সাইজ স্কয়ার ফিটে) 0-90 sf. 91-120 sf. 121-144 sf. 145-180 sf. 181-220 sf. 221-250 sf.Here is how we can calculate how many kW you would need for this flat: Air Conditioner kW Capacity = 100 m 2 × 0.065 kW per m 2 × 1.12 (ceiling height correction) × 1 (average climate) × 1.1 (very sunny correction) + 1.2 kW (kitchen included) = 9.2 kW. For this 100 m 2 flat, you would need about 9.2 kW of cooling output.1 3/8. 1 5/8. 1 5/8. 1 5/8. Refer to DuPont Refrigerant Expert, Version 2.0 for actual velocities and pressure drops. Equivalent length is actual length plus friction losses caused by fittings and accessories. Line sizes are expressed in outside diameter of type “L” copper tubing. Line sizes are calculated at rated full load system capacity.The table on the right (or below if you’re viewing on a phone) shows the return duct size for HVAC unit from 1.5 tons to 5 tons. Based on 400 CFM per ton, the corresponding airflow is also provided. The next column is the diameter (in inch) for ROUND RIGID duct. The last column is the number of round rigid duct you need.A 1.5 Ton system is the smallest central air conditioning size you’ll come across. Air conditioner sizes are as follows: 18,000 BTUs – 1.5 Tons; 24,000 BTUs – 2 Tons; 30,000 BTUs – 2.5 Tons; ... This Florida AC sizing chart can help you better understand the size of the air conditioner that’s right for your home. It’s not anywhere ...Larger air conditioning units are more expensive than smaller ones. Larger units can handle a much greater volume of air, which is a necessity for bigger homes. The capacity of an AC unit is measured in British Thermal Units (BTUs). A one-ton air conditioner (about 12,000 BTUs) can cool one ton of air each hour.The steps HVAC professionals take to choose A/C size for mobile homes using the ENERGY STAR guide include: Determine the square footage of the mobile home where the air conditioning unit will be installed. Find the county where the home is located on the guide's map. This will give you a sizing group number. Find the sizing number on … To calculate the required equipment size, divide the HVAC load for the entire building by 12,000. One ton equals 12,000 BTUs, so if a house or office needs 24,000 BTUs, it will take a 2-ton HVAC unit. If you get an uneven number, such as 2.33 for a 28,000 BTU load capacity, round up to a 2.5-ton unit. Though BTUs are important, most larger air conditioning units are rated in tons. Since 12,000 BTUs equal 1 ton, an air conditioning unit rated at 3 tons can produce 36,000 BTUs. Step 1: Calculate the square footage of the area to be cooled. Figure out if the office space will be divided into zones that cooled by separate air conditioning units.Learn how to calculate the amount of AC tonnage required for a room using this online Tonnage Calculator. A 4-ton air conditioner is able to remove 48,000 British thermal units (or BTUs) of heat per hour. One ton of A/C capacity is equivalent to 12,000 BTU per hour. AC Tonnage: It takes one ton of heat to remove 288,000 Btus from the air in a day. That’s the amount of Btus that must be removed to melt one ton of ice over 24 hours. Thus, a one-ton AC unit would be rated 12,000 Btus per hour. The total square feet in a home is the primary factor involved in calculating which AC is best. To calculate the required equipment size, divide the HVAC load for the entire building by 12,000. One ton equals 12,000 BTUs, so if a house or office needs 24,000 BTUs, it will take a 2-ton HVAC unit. If you get an uneven number, such as 2.33 for a 28,000 BTU load capacity, round up to a 2.5-ton unit.The equation for ‘ sq ft to BTU ‘ is quite simple – multiply the sq ft with 20. That means that a 500 sq ft room needs a 10,000 BTU air conditioner. Of course, do make sure 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.An air conditioner tonnage calculator is a useful tool for homeowners and contractors to accurately determine the size of the air conditioning unit that is needed for any given space. This helps ensure that the correct unit size is purchased, which in turn can help save money on energy bills by avoiding over or under-sizing an AC unit.To determine the tonnage of your Carrier AC unit, check the model number. The first two or three digits represent the nominal capacity in BTUs per hour. Divide this number by 12,000 to find the tonnage. For example, a model number with 24 as the first digits indicates a 2-ton unit.BL - Refrigerant Line Sizing App. Refrigerant Line Sizing. Units of Measurement: °F - ft - Btu/h °F - ft - ton °C - m - Btu/h °C - m - ton °C - m - W °C - m - kW. Evaporator Temp: Refrigerant: 12 134a 22 290 401A 404A 407A 407C 407F 408A 409A 410A 414B 422D 437A 438A 448A 449A 450A 452A 455A 502 507 513A. Refrigerant Line:As a general rule, an air conditioner needs 20 Btu for each square foot of living space. But other considerations, such as the ceiling height and the size of your windows and doorways, might call ...4 May 2023 ... Air Conditioning Sizing Chart ... As noted above, the size of your home is a major factor in making sure you get the right size AC unit. The most ...Apr 1, 2024 · The table on the right (or below if you’re viewing on a phone) shows the return duct size for HVAC unit from 1.5 tons to 5 tons. Based on 400 CFM per ton, the corresponding airflow is also provided. The next column is the diameter (in inch) for ROUND RIGID duct. The last column is the number of round rigid duct you need. Divide the area by 600 to get the basic capacity. For example, if your room is 100 square feet: Basic capacity = 100 / 600 = 0.167 tons. Adjust for Number of ...For example, a filter labeled 10” X 12” X 1” is 10 inches long, 12 inches wide, and one inch thick.Here’s a look at some common filter dimensions. 10 X 20 X 1’’. 14 X 20 X 1’’. 16 X 24 X 1’’. 18 X 30 X 1”. A filter’s advertised size is slightly bigger than its exact measurements. If you know how these two sizes relate ...A BTU is what's required to heat or cool one pound of water by 1 degree Fahrenheit. For example, your home's square footage total, including all floors and ceilings, is what determines what size what size HVAC unit you need. For every 500 BTUs required for your home, you will need approximately one ton of air conditioning or heating capacity (1 ...We have done the research to provide you with the details about the tonnage of a Goodman air conditioner. You can determine the tonnage of your Goodman air conditioning by dividing the BTU by 12,000. If the information about the BTU is not available, you can check the model number. You will find 0 and two-digit even numbers …13 Dec 2023 ... Under normal circumstances, the ideal room size for a 2 ton AC should be around 175 square feet to 250 square feet. But, again, a lot depends on ...11 May 2017 ... The Air conditioner output and capacity is measured in BTU per hour. This chart includes areas from 100 square feet up to 2500 square feet ...The CFM Per Ton Calculator provides a convenient way to compute this value by entering the total CFM and total tonnage of cooling. It helps HVAC professionals and technicians ensure proper airflow in cooling systems, which is essential for maintaining optimal temperature and comfort levels in various spaces such as homes, offices, and ... This number is typically between 18 and 60. Divide this number by 12 (representing 12,000 BTU/hr, or one ton of cooling capacity) to get the overall tonnage of the unit. This chart may also be useful when converting the numbers: 18 = 1.5 tons. 24 = 2 tons. 30 = 2.5 tons. To calculate the required equipment size, divide the HVAC load for the entire building by 12,000. One ton equals 12,000 BTUs, so if a house or office needs 24,000 BTUs, it will take a 2-ton HVAC unit. If you get an uneven number, such as 2.33 for a 28,000 BTU load capacity, round up to a 2.5-ton unit.Winter Park FL. 32792. USA. Hours of Operation:Monday-Friday. 8am - 10pm EST. Phone:866-862-8922407-951-8908. AC with Gas Heat. Air Conditioners with Heat Pumps. Air Conditioners with Heat Pumps. Cooling Only. 2301 - 2700 sf. 5 Tons. 2401 - 3000 sf. 2501 - 3100 sf. 2601 - 3200 sf. 2751 - 3300 sf. 2701 - 3300 sf. Did you know that you can get big discounts on Goodman and Ruud air conditioning systems? Shop online or by phone and get FREE shipping. 48,000 BTUs. 2500 sq. ft. 5-ton AC unit/5-ton heat pump. 60,000 BTUs. You can find your system’s current tonnage by looking in your owner’s manual, or at the information plate on the outdoor unit, usually located on the side or back of the unit. Look for the model number, and then within the model for an even number between 18 and 60.AC and Furnace Sizing Calculator for Free. If you are looking for a free AC System Calculator or HVAC Load Calculator, we have a free calculator to recommend to you. This free HVAC Sizing Calculator is full featured and allows you to print a complete heat gain and heat loss report. It is available at Black Belt Contracting. The equation for ‘ sq ft to BTU ‘ is quite simple – multiply the sq ft with 20. That means that a 500 sq ft room needs a 10,000 BTU air conditioner. Of course, do make sure 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. Since most air conditioning units are provided in increments of ½ a ton (6,000 BTU/hour) sizes, this system should be quite close to the actual units that will be used. Note: This HVAC calculator is provided strictly as a quick method of computing general size and value conditions. Square foot methods are considered rule of thumb for use in ...service technicians to demonstrate how to size refrigerant piping. Using This Guide This Guide covers R-22, R-407C, R-410A, and R-134a used in commercial air conditioning systems. It does not apply to industrial refrigeration and/or Variable RefrigerantVolume (VRV) systems. Illustrations and figures are not to scale.AC and Furnace Sizing Calculator for Free. If you are looking for a free AC System Calculator or HVAC Load Calculator, we have a free calculator to recommend to you. This free HVAC Sizing Calculator is full featured and allows you to print a complete heat gain and heat loss report. It is available at Black Belt Contracting.Cooling Tower Tons. A cooling tower ton is defined as: 1 cooling tower ton = 1 TONS evap = 1 TONS cond x 1.25 = 15000 Btu /h = 3782 k Calories /h = 15826 kJ/h = 4.396 kW . The equivalent ton on the cooling tower side actually rejects about 15000 Btu/h due to the heat-equivalent of the energy needed to drive the chiller's compressor. This equivalent ton is …Less than 300 tons the full load efficiency value is 0.634 kW/ton, 300-600 tons – 0.576 kW/ton and >600 – 0.570 kW/ton. Since all the compressor types can have a cooling load less than 300 tons, the worst case full load efficiency is used. Absorption chillers are not included in this calculator.A ton of refrigeration or refrigeration ton (symbol: TR or TOR) is another unit of power. One ton of refrigeration is equal to heat transfer which resulted in the consumption of one ton (or 2000 lb) of pure ice at 0 °C (32 °F) per day.. In the USA, the thermal capacity of air conditioning and refrigeration equipment is often specified in …Winter Park FL. 32792. USA. Hours of Operation:Monday-Friday. 8am - 10pm EST. Phone:866-862-8922407-951-8908. AC with Gas Heat. Air Conditioners with Heat Pumps. Air Conditioners with Heat Pumps. Cooling Only. Since most air conditioning units are provided in increments of ½ a ton (6,000 BTU/hour) sizes, this system should be quite close to the actual units that will be used. Note: This tool is provided strictly as a quick method of computing general size and value conditions. Square foot methods are considered rule of thumb for use in quick ... To really size the HVAC properly you have to do a heat load calc. Using xyx ton/sq ft would only get you into the realm of what size you have, ...A ton of air conditioning equals 12,000 BTU, and 48 divided by 12 equals 4, so the data plate below indicates the system is 4 tons. Here’s a rundown of the range you will encounter: 18 = 1.5 tons, 24 = 2 tons, 30 - 2.5 tons, 36 = 3 tons, 42 = 3.5 tons, 48 = 4 tons, and 60 = 5 tons. And this is another one that is rated at 2.5 tons.Learn more about selecting heating. and cooling capacity. Estimate. Reset selections and start over. Sizing Estimator for Furnace and Air Conditioning Equipment: sizes and features for heating and cooling your home or commercial building.Here is how you can use this AC wire size calculator: Let’s say that we have a 2.5-ton AC unit that runs on 220V. You just slide the AC tonnage to ‘2.5’ and slide the voltage to ‘220’. You will see that the minimum ampacity your AC wire should handle is 17.05 amps. This is the key information you need.Step one is simply figure out the room size in square feet of the room you would like to keep cool. Next, figure out the amount of heat or "heat load" that the room receives. For example, if the room has a lot of windows or is next to a kitchen, that room would probably have a high heat load. Based on those two parameters, you should be …Air Conditioning Sizing Chart by Total Square Footage. Central Air Conditioner Sizing Chart for Homes by Total Square Footage. Air Conditioner Sizing …AC Tonnage Calculator provided by: To schedule a professional tonnage calculation, call Gulf Coast Air Systems at 813-689-2082, or email us here >. Use our ac tonnage calculator to help you determine what size air conditioner will be the most efficient and cost effective.Therefore, if you want to convert BTU to tons simply multiply the number of BTU by \small 8.33333 × 10^ {-5} 8.33333× 10−5 and you will obtain a corresponding number of refrigeration tons. For example, if you have 50 Btu/h: If you are curious about how to convert between different power units, check out our power converter.Air Conditioner Sizing Calculator. Ensure your new air conditioner is sized right for the intended application, by using our fast and free online load calculator. Enter the details of the room that your air conditioner will be installed in and press the ‘Calculate’ button for the ideal size/capacity in Kilowatts (kW).The 1 ton to BTU conversion is 12,000, as the calculator shows. In short, there are 12,000 BTU per ton. Try the calculator. Enter the tons of the equipment, and the BTU rating will be calculated. It is valid for equipment to 20 tons including those with decimals such as 1.5 or 3.5, both common ton sizes for HVAC equipment.The equation for ‘ sq ft to BTU ‘ is quite simple – multiply the sq ft with 20. That means that a 500 sq ft room needs a 10,000 BTU air conditioner. Of course, do make sure 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.This air conditioner size calculator, also known as an AC tonnage calculator, helps you choose the right size air conditioner for your room. It takes into account factors such as room size, city of use, number of people, and number of appliances in the room to recommend the appropriate AC size in tons. Use a tape measure to determine the …This air conditioner size calculator, also known as an AC Tonnage calculator, air conditioner size calculator helps you to choose what size of air conditioner, so By using the existing heating/cooling ducts that encompass the entire home. Of course, the choice of brand and air conditioner type still depends on you.Easy To Use A/C Size Selection Tool: Check the color coded map above and confirm the zone your home is in. Then, on the chart included underneath, select the square footage of your home along with the zone you're in. From there you can select one of units that will be most efficient for your home. ZONE 1. ZONE 2.Furnace Output and Air Conditioner size for a Bungalow ; up to 1200 sq ft. 40,000 BTU/hr. 50,000 BTU/hr. 1.5 ton. up to 2 ton ; 1200 to 1500 sq ft. 50,000 BTU/hr.$4,070. Average. $4,920. High. $5,930. See costs in your area. HVAC Load Calculator provides an accurate real world heat load …Cooling size is given in tons of cooling; 1 ton = 12,000 Btu/h. ... 'SEER' (Seasonal Energy Efficiency Ratio) indicates the efficiency of the air conditioning ...48,000 BTUs. 2,500 square feet. 5 tons. 60,000 BTUs. 3,000 square feet. 6 tons. 72,000 BTUs. Once you know the appropriate number of BTUs required for your home's heat pump, you can start shopping ...Air Conditioning Sizing Chart by Total Square Footage. Central Air Conditioner Sizing Chart for Homes by Total Square Footage. Air Conditioner Sizing …service technicians to demonstrate how to size refrigerant piping. Using This Guide This Guide covers R-22, R-407C, R-410A, and R-134a used in commercial air conditioning systems. It does not apply to industrial refrigeration and/or Variable RefrigerantVolume (VRV) systems. Illustrations and figures are not to scale.Air Conditioner Sizing Calculator. Ensure your new air conditioner is sized right for the intended application, by using our fast and free online load calculator. Enter the details of the room that your air conditioner will be installed in and press the ‘Calculate’ button for the ideal size/capacity in Kilowatts (kW). service technicians to demonstrate how to size refrigerant piping. Using This Guide This Guide covers R-22, R-407C, R-410A, and R-134a used in commercial air conditioning systems. It does not apply to industrial refrigeration and/or Variable RefrigerantVolume (VRV) systems. Illustrations and figures are not to scale. Step one is simply figure out the room size in square feet of the room you would like to keep cool. Next, figure out the amount of heat or "heat load" that the room receives. For example, if the room has a lot of windows or is next to a kitchen, that room would probably have a high heat load. Based on those two parameters, you should be …1,000 - 1,200 sq. ft. small home, 3-4 bdrm apartment. 24,000 BTU. 1,400 - 1,500 sq. ft. medium home, 4-bdrm apartment. 30,000 BTU. 1500 - 1700 sq. ft. medium home, 4-bdrm apartment. Now, let’s discuss how this table will help you choose the right size air conditioner for the room or zone you want it to serve.4 May 2023 ... Air Conditioning Sizing Chart ... As noted above, the size of your home is a major factor in making sure you get the right size AC unit. The most ... 3 tons – 1501 to 2100 square feet. 3.5 tons – 1801-2300 square feet. 4 tons – 2101 to 2700 square feet. 5 tons – 2401 to 3300 square feet. If you think your system may not be the correct size for your space, you are looking to get a new system or you have any questions regarding HVAC units, contact A/C Masters at 757-898-2894. Here are some of the common HVAC Questions that most users of air conditioners or heat pumps asked. Expert Advice On Improving Your Home Videos Latest View All Guides Latest View A...Generally, you need 20 BTU for every square foot of space in your home. The chart below can guide your BTU choice: The larger your home, the higher BTU you’ll need to support your comfort. One of the most … Free AC Sizing calculator. If you’re wondering “What size air conditioner do I need?” This BTU and AC tonnage calculator can help. *Super easy* to use based on your climate and insulation factors. Use our calculator to find out the AC tonnage required for your room. Step 1: Enter the room area in square feet. Step 2: Enter the height of the ceiling in feet. Step 3: Choose the climate type between ‘Hot’ and ‘Average.’. Generally, the …A ton of refrigeration or refrigeration ton (symbol: TR or TOR) is another unit of power. One ton of refrigeration is equal to heat transfer which resulted in the consumption of one ton (or 2000 lb) of pure ice at 0 °C (32 °F) per day.. In the USA, the thermal capacity of air conditioning and refrigeration equipment is often specified in …Use our calculator to find out the AC tonnage required for your room. Step 1: Enter the room area in square feet. Step 2: Enter the height of the ceiling in feet. Step 3: Choose the climate type between ‘Hot’ and ‘Average.’. Generally, the …
Updated February 12, 2024. Highlights. AC tonnage refers to the amount of heat an HVAC unit can remove per hour. You can find the tonnage of your AC unit on your model number located on your outdoor condenser. Proper sizing (load calculation) is important for determining comfort levels and overall efficiency.. Vraylar for anxiety and depression
Within the string, you should see an even, two-digit number. Add three zeroes to the number and you have the BTU rating. Divide the two-digit number by 12, and you have the tonnage. Here are some examples: 12 = 12,000 BTU or 1 ton. 18 = 18,000 BTU or 1.5 tons. 24 = 24,000 BTU or 2 tons. 30 = 30,000 BTU or 2.5 tons. May 14, 2014 · Divide 286,000 (amount of energy to melt a ton of ice), by 24 (hours in a day), the result is 11,917 BTU’s of energy per hour to melt the ton of ice. The industry rounded up to 12,000 Btu/h to reference 1-ton of air conditioner capacity. Therefore, a 2-ton A/C unit will remove 24,000 BTU’s of heat per hour; a 3-ton A/C unit will remove ... Although tonnage is often referred to as the AC's “size”, this really means its cooling capacity. More specifically, it tells how much heat the unit can remove ...Free AC Sizing calculator. If you’re wondering “What size air conditioner do I need?” This BTU and AC tonnage calculator can help. *Super easy* to use based on your climate and insulation factors.28 May 2008 ... Take the 4th,5th & 6th digits in the m/n and divide by 12 (12,000 btu/ton). For example: D2CG180N24046ECB would be a 15 ton unit. b-man.Typical Cost To Install Central AC Average: $4,070 - $5,930. See costs in your area. This HVAC Heat Load Calculator will help you estimate proper system size in BTUs/h, base on simplified Manual-J method, that accounts for your home size, heat loss, geographic/regional adjustments, etc., to give you a pretty accurate size of you …Free AC Sizing calculator. If you’re wondering “What size air conditioner do I need?” This BTU and AC tonnage calculator can help. *Super easy* to use based on your climate …Although tonnage is often referred to as the AC's “size”, this really means its cooling capacity. More specifically, it tells how much heat the unit can remove ...Contact Us. This calculator should only be used to estimate your building’s BTU needs. You should get a professional BTU estimate done by your local HVAC Company to get a better picture of what size unit you need. Need help? Give us a call today 602.349.6922.23 Aug 2021 ... ... air conditioner. Simple Ways to Select the Right AC Size. split ac tonnage calculator. 1. Size of the Room. The first thing that you must keep ...An air conditioner generally needs about 20 BTU per square foot of living space. Once you've calculated the square footage of the room or home, multiply the result by 20 to find the air conditioner size for the home. For example, if the square footage of the home is 2,000 square feet, you can find the right air conditioner size by multiplying ...An AC tonnage calculator is a helpful tool used by HVAC specialists, providing a formula that ensures the right AC system for your home or office. Remember, choosing the correct AC tonnage is essential for maintaining a comfortable …Apr 20, 2023 · An air conditioner generally needs about 20 BTU per square foot of living space. Once you've calculated the square footage of the room or home, multiply the result by 20 to find the air conditioner size for the home. For example, if the square footage of the home is 2,000 square feet, you can find the right air conditioner size by multiplying ... 4 Jan 2022 ... For every 500 BTUs required for your home, you will need approximately one ton of air conditioning or heating capacity (1 ton = 12,000 BTUs).Edited by M.J. Davis Lin , Brendan Klinkenberg and Lisa Chow. Original music by Diane Wong , Marion Lozano and Dan Powell. Engineered by Alyssa Moxley. Donald …May 14, 2014 · Divide 286,000 (amount of energy to melt a ton of ice), by 24 (hours in a day), the result is 11,917 BTU’s of energy per hour to melt the ton of ice. The industry rounded up to 12,000 Btu/h to reference 1-ton of air conditioner capacity. Therefore, a 2-ton A/C unit will remove 24,000 BTU’s of heat per hour; a 3-ton A/C unit will remove ... This allows ample cooling, whether it is a rainy, moist day or a hot, sunny, humid day. Let’s say the room is 12 feet wide by 15 feet long. That means 12x15=180 square feet. Take the 180 sq. ft. times 25 BTU …One ton represents 12000 BTU mini split, one and a half tons equals 18000, two tons equals 24000, and so on. This makes sizing and consumer expectations easily understood. Much is made of the problems encountered by homeowners if mistakes are made by either over-sizing or under-sizing AC and heating systems-particularly mini split … Since most air conditioning units are provided in increments of ½ a ton (6,000 BTU/hour) sizes, this system should be quite close to the actual units that will be used. Note: This tool is provided strictly as a quick method of computing general size and value conditions. Square foot methods are considered rule of thumb for use in quick ... By dividing your square footage by 12,000, you can choose a 4 or 4.5-ton AC unit for a home over 2,500 square feet in size. Window air conditioning units typically have cooling capacities that ....