Hvac tonnage chart - Air Conditioner BTU Chart. We have also calculated air conditioner BTUs for 100 sq ft, 150 sq ft, 200 sq ft, and up to 3,000 sq ft rooms/homes, based on the AC BTU sizing rule of …

 
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.. Fabfitfun community

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) = …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 …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 …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.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. 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 ...Another term you will see used often for HVAC systems’ cooling capacities is “ton.” A ton equals 12,000 BTU, which would adequately cool about 500 square feet. We list BTU/tonnage where applicable for each system described below. The following chart is an estimation for tonnage coverage based on the square footage of your property.Next, divide that number by 12,000 to determine the tonnage capability you need in your new air conditioning unit. Summary of the 3 simple steps to calculate AC ...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.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 ...The Rheem RPKA-049JAZ heat pump is a 4-ton unit. Rheem heat pumps with 048 or 049 in the model number have a nominal cooling capacity of 48,000 British Thermal Units (BTUs) per hou...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.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. 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. Sep 2, 2022 · A cooling capacity of one ton is equal to 12,000 BTUh. Air conditioners for your home have a tonnage rating. Those ratings fall within 0.5-ton increments, and create a scale of 1.5, 2, 2.5, 3, 3.5, 4, 4.5, or 5 ton units. For example, when considering what size air conditioner is needed for a 2,000 square foot home, you would likely choose a 3 ... The line sizing charts on each case specification sheet can be used to size the subfeed branch lines. When the line serves one case. select the size specified for 50 equivalent feet for the 8’ or 12’ case. This may be as small as 5/8” (example service meat cases), or as large as 1-3/8” (example multi-shelf ice cream cases).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.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 accurate ways to measure the right size AC for your home is with a Manual J calculation. Manual J calculation.Copeland Scroll ZRK5 compressors are offered in an -800 bill-of-material option, such as ZR25K5-PFV-800, that includes the compressor with a 42 inch molded plug wiring harness, mounting parts and installation instructions. Other available information includes: A/C Compressor Product Guide (2008ECT-113) ZRK5 Product Brochure (2009ECT-98)HVAC units are identified by their multiple-character model number that identifies a particular type of unit. Below you will find a partial explanation of the alphanumeric identification code (aka Model Number Nomenclature). ... Tonnage, Air Flow, kW, etc. are located within the oval/round shaped buttons). Thank-You For Sharing. ACNF** Unit ...How To Use Our AC Tonnage Calculator. Simply input the estimated square footage of your home into the calculator and click “Calculate.”. Our tool will provide you with the recommended air conditioning unit size, taking into account energy efficiency and optimal cooling capacity. By following these personalized recommendations, you can ...Find out the HVAC Softwares needed to do mechanical design, load calculations and duct calculations. Expert Advice On Improving Your Home Videos Latest View All Guides Latest View ...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.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.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: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 ...Tonnage = 60,000 BTUs / 12,000 = 5 tons. So, you would need an air conditioning unit with a capacity of 5 tons to adequately cool this room. FAQs. Q1. What is the relationship between BTUs and tonnage? A1. One ton of cooling capacity is equivalent to 12,000 BTUs per hour. To find the required tonnage, divide the total BTUs by 12,000. Q2.HVAC Design and Engineering . This AC size calculator. This calculator is provided for use to calculate basic size in BTU to adequately cool a room of know size. The sizing chart below the calculator is useful to help you determine your approximate air conditioner size requirement in Tons. ALL calculators require a Premium Membership. Preview ...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 …Copeland's Refrigerant Charge Calculator in a few points: Tool to support the calculation of the maximum possible refrigerant charge of A2L refrigerants, according to safety standard EN 378-1. For any type of refrigeration system and refrigerant type, the system designer has a general requirement to carry out a risk assessment.22 Apr 2019 ... Often, the model number contains a number related to the tonnage. For example, one ton is 12,000 BTU per hour, two tons is 24,000, and so on.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.27 Jan 2024 ... I usually use 500 square feet per ton to calculate tonnage requirem ... HVAC sizing. I didn't do the inspection ...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 ...The direct to consumer AC company in Florida. Miami 8350 NW 52nd Terrace, Suite 301-1018 Miami, FL 33166 Phone: 305-363-6303 Orlando 2212 S Chickasaw Trl, Orlando, FL 32825In conclusion, the CFM to Tons Calculator is a valuable tool in the HVAC and refrigeration industry, facilitating the design and optimization of cooling systems. Its simplicity and accuracy make it indispensable for professionals involved in air conditioning, ventilation, and refrigeration projects. FAQs. 1.Step 1: Basic Info. In step one, the calculator will ask you to fill out basic info about your room, including its size, age, and type (bedroom, kitchen, office, etc.). This information will set the general parameters of your application. For example, knowing your building age helps the calculator understand the quality of insulation inside ...Size of the HVAC system (1.5 to 5.0 tons) Rating of the blower in CFM (Most are 350-400 CFM per ton) Square foot of the space served by the HVAC system; The equation is: Tonnage x CFM of the blower / Number of square feet. Example: 4-ton AC x 400 CFM blower / 2,000 square feet = 0.8 CFM per square foot. A room that is 200 …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).A “ton” of cooling capacity equals 12000 BTUs per hour; thus 1-ton AC units have 12000 BTUs/hr and 2-Ton AC Units have 24000BTUs/hr. To determine how many tons you need for your HVAC system in total, you must multiply the square footage of your home by 25 (the approximate amount of heating/cooling required per square foot).Mar 26, 2024 · Air Conditioning Sizing Chart by Total Square Footage. Central Air Conditioner Sizing Chart for Homes by Total Square Footage. Air Conditioner Sizing Chart for Houses by No. of Bedroom. Air Conditioner Sizing Chart for Apartments by No. of Bedroom. Room Air Conditioner Sizing Chart for Garages by No. of Car. BTU stands for British thermal unit, and there are 12,000 BTUs per one ton of AC capacity. Air conditioning units remove BTUs from the atmosphere. For example, if you see an air conditioning unit rated for two tons, it can remove 24,000 BTUs from the air. More tonnage equals a higher rating, which indicates a larger cooling capacity.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 …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 BTUThough 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.Koppel stresses the importance of choosing the right air conditioning size for your area not only to maximize the cooling efficiency of your unit but also to get the most value ... We have provided a simplified aircon size calculator to guide you in selecting the right size capacity for your area. Please fill in the fields below. 1. Enter Room ... A ton, as used in the HVAC field, is a term that describes how much heat the AC unit can remove from a home in one hour. The measurement for heat is the British thermal unit (BTU). One ton of air conditioning can remove 12,000 BTUs of air per hour. A four ton unit can move 48, 000 BTUs and so on. Therefore, the more tonnage an AC unit is rated ... Anything with larger cooling capacity would be considered light commercial. Tonnage ratings are typically expressed in increments of .5 tons, so residential air conditioners are usually rated as 1.5, 2, 2.5, 3, 3.5, 4, 4.5 or 5 ton units. It should be noted that there is a distinct difference between BTU and BTUh. 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 2.1 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.Goodman Thermostat Installation and Commissioning. Goodman GTST thermostat Homeowner App Settings for Unitary. Goodman GTST thermostat Local Thermostat Settings for Unitary. The Goodman literature library has consumer brochures and technical specifications for various Goodman HVAC models and product lines.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.Elements in the AC Tonnage Chart. An understanding of the components that make up the tonnage chart will help you efficiently install the correct central air system. You will also gain an insight into what size central AC unit you need for your home or business, generating cost efficiencies in the long run.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 systems, as ...HVAC units are identified by their multiple-character model number that identifies a particular type of unit. Below you will find a partial explanation of the alphanumeric identification code (aka Model Number Nomenclature). Our samples have been simplified to concentrate more on the location of each individual units tonnage and air flow ...A ton, as used in the HVAC field, is a term that describes how much heat the AC unit can remove from a home in one hour. The measurement for heat is the British thermal unit (BTU). One ton of air conditioning can remove 12,000 BTUs of air per hour. A four ton unit can move 48, 000 BTUs and so on. Therefore, the more tonnage an AC unit is rated ...The Chiller Tonnage Calculator is a vital tool used in the HVAC (Heating, Ventilation, and Air Conditioning) industry to determine the cooling capacity required for a particular system. It calculates the necessary tonnage of refrigeration needed to effectively cool a space or system based on specific inputs.Each ton of refrigeration can cool 12,000 BTUs each hour. Learn how to calculate air conditioning tonnage by multiplying the unit’s tonnage by 12,000. Using this formula: A 2-ton unit can cool 24,000 BTUs per hour. A 3-ton unit can cool 36,000 BTUs per hour. A 4-ton unit can cool 48,000 BTUs per hour.In case you know the power in watts but want to know how many BTUs it is equivalent to, you would only have to multiply the power in BTUs by 3.412. 1 Watt = 3.412 BTU/hour. You will often find that thermal power is expressed in kilowatts (kW). 1 kilowatt equals 1000 watts. Thus, an air conditioning system requiring 2322 W will be equivalent to ...The heating requirement in the same home in the same location is just 24,000 to 32,000, or almost exactly half. Zone 7 – 2,000 square foot home: AC needed is 24,000 to 32,000 BTU while the heat needed is about double, 48,000 to 60,000 BTU. That is why in Zones 1-4, you should use the AC rating in the Calculator even if buying a mini …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 …Simple; use the calculator or/and chart below, look up ‘5 kW’ and you will see that a 5 kW AC unit is basically a 1.42 Tons unit. Here is the conversion formula for kW to tons: 1 kW = 0.28434514 Tons. In short, 1 kW is equal to 0.28334514 tons. Basically, 3.5 kW is equal to 1 ton. You can use a hand calculator to calculate that. 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. Goodman air conditioning unit tonnage can be determined by the unit’s model number. This number is located on a plate attached to the back of the unit, near the power supply and co...At AL Naveed AC System Installation LLC, we use a complex formula and factor in many details to determine the exact amount of Btu your new air conditioner should have, we provide you with this free online Btu and Tonnage calculator (also known as load calculation) to give you a estimate. Just fill in your home or office square footage, the ...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 ...Chart showing how many kw and amp an air conditioner & heat pump uses. Air ... 1 Ton. 12,000. 1. 1. 5. 3. 1. 3. 25. 17. 7. 2 Ton, 24,000, 2, 2, 10, 7, 3, 6, 50 ...Most homes need ACs that range from 18,000 to 60,000 BTUs. Sometimes you’ll see air conditioner size measured in tons instead of BTUs. Tonnage is just another way of expressing an air conditioner’s cooling performance. Below is an AC sizing chart to help you compare tonnage with BTU output: 1 ton = 12,000 BTUs.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 cooling/heating ...Inverter AC tonnage calculator: ... Also please note that if you buy a BEE 5 star rated 1.5 ton AC for a room that needs 1.2 tons of cooling, it will be as good as buying a BEE 3 star 1.2 ton AC (oversizing causes inefficiency which will result in …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.AC Tonnage Calculator accurately estimates the proper Central AC size in TONs & BTUs, as well as the cost to install your Central Air system in different climate zones, based on your house size & AC …(Tonnage Per Square Foot) Simple answer: You need 0.0016 tons of AC per square foot. In short, if you’re looking to cool down a 600 sq ft area, you would need: AC …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 systems, as ...What is the proper size HVAC system for my home? Sizing the equipment load requires the consideration of several factors. Ceiling height, construction, window size and placement and dozens of other variables all need to be considered to properly size a heating and/or cooling system. A professionally conducted load calculation is the foundation ...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 …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.Here’s a basic introduction to these systems and how they work. Your HVAC system— which includes your heating, ventilation, and air conditioning— controls your home’s indoor temperature and humidity. It provides ventilation and filters out particles such as dust, pollen, dander, and other allergens. In this guide, we’ll explain 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.The main factor is the size of the room. Room Size. The size of the room is the main factor in choosing a window air conditioner size. A larger room will naturally require more energy to cool and more airflow in CFM than a smaller room. Window AC Size Chart. The chart below from Energy Star shows how many BTUs are needed for a given room size.Dec 1, 2023 · Another term you will see used often for HVAC systems’ cooling capacities is “ton.” A ton equals 12,000 BTU, which would adequately cool about 500 square feet. We list BTU/tonnage where applicable for each system described below. The following chart is an estimation for tonnage coverage based on the square footage of your property. 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 ... 29 Jun 2018 ... In laymen term, AC Tonnage is simply the cooling capacity or the cooling output of the air-conditioner. The calculation is quite simple. The ...HVAC units are identified by their multiple-character model number that identifies a particular type of unit. Below you will find a partial explanation of the alphanumeric identification code (aka Model Number Nomenclature). ... Tonnage, Air Flow, kW, etc. are located within the oval/round shaped buttons). Thank-You For Sharing. ACNF** Unit ...Further below, you can find an AC tonnage calculator chart with the necessary power according to your size in square feet: Keep in mind that many other factors influence the …

The British Thermal Unit, or BTU, is an energy unit. It is approximately the energy needed to heat one pound of water by 1 degree Fahrenheit. 1 BTU = 1,055 joules, 252 calories, 0.293 watt-hours, or the energy released by burning one match. 1 watt is approximately 3.412 BTU per hour. BTU is often used as a point of reference for comparing .... Shetlers cabool mo

hvac tonnage chart

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 systems, as ...Sizing systems. It’s important to install the right Trane matched system size for your home, depending on a number of factors. The wrong system size could cost you. A system that is too large will cool or heat your house quickly, but you still may not feel comfortable. It will satisfy the temperature setting on your thermostat before it can ...AC Calculator. Size matters. And when it comes to choosing an AC there’s no such thing as one size fits all. Taqeef’s AC calculator gives you a quick guide to choosing the right AC for your space. Welcome to interactive presentation, created with Publuu. Enjoy the reading!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 ...Find an Air Conditioner Installer. Discover what size air conditioner you'll need, how many BTUs your home requires per sq ft and which factors impact the size of an air …HVAC design tools include such popular items as the Trane Ductulator™, psychrometric charts, and load estimating forms. Learn more about the order process here . Ductulator - Hand held rotating calculator used for sizing supply and return duct systems using the equal friction design method.This AC BTU calculator is the first step in getting the right size central air conditioning system to make your home comfortable – the right temperature and perfect …By using this equation, we can determine the size of the return grille we need for 400 CFM airflow like this: Grille Area (400 CFM) = 400 CFM ÷ 500 FPM ÷ 0.7 × 144 = 164 Sq In. That means we will need a grill with at least 164 square inches of area to accommodate for a 400 CFM airflow. 10×10 grille, for example, has a 100 sq in area; it ...Visiting HVAC events and trade shows are one of the best way to equip yourself with the latest happenings in the air conditioning and refrigeration field. See the listing of events...Window AC Size Chart. The chart below from Energy Star shows how many BTUs are needed for a given room size. BTUs of cooling needed to condition various size rooms. Room Size (ft 2) Capacity Needed (BTUs) 100 – 150 sq. ft. 5,000 BTUs: 150 – 250 sq. ft. 6,000 BTUs: 250 – 300 sq. ft. 7,000 BTUs: 300 – 350 sq. ft.The capacity in tons of a Trane outdoor unit can be determined by dividing the 7th and 8th digit of the model number by 12. So if the model number is #4TTX4036A1000AA, take 36 and divide by 12, equaling 3 tons. Lets decode the trane model number from the example above: First letter. The model number starts with 4..

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