|Home » How to determine what size window air conditioner you need June 6, 2013 August 18, 2021 / 4 Comments / Heating and Cooling , Tips / By diyrepair A properly-sized air conditioner unit will maximize energy efficiency, remove humidity in the air and ensure your space is cool and comfortable throughout the season.
Pairs hackerrank solution in c

Is ryan hanrahan still married

How to read tonnage on ac unit

Sep 15, 2021 · The cost to replace a central air conditioner is about $5,000. However, this price varies depending on the size of your home and the difficulty of the project. It can cost as much as $12,500 to replace an AC unit. The labor required to remove and dispose of the old system adds to the price. Mistake No. 2: Putting the Air Conditioner in a Hot Spot. It may seem convenient to put air conditioners in an unused spot on the southwest side of the house. However, such placement will make the unit work too hard. Instead, install the air conditioner in a shady spot on the east or north side of the house, where it will receive less direct ... You can restart your system after waiting for 3-4 hours. If your air conditioner freezes when you turn it back on, then turn it off immediately and contact Pro-Tech for air conditioning service. 2. Check For A Dirty Air Filter. Clogged air filters can do a lot of damage to your HVAC system and can cause air conditioner freezing. trane model number. Simply divide the BTUs by 12,000 to calculate the tonnage of your unit. For example, if your air conditioner is 36,000 BTUs, you have a 3 ton unit. Some manufacturers bury tonnage or BTU information in their model numbers. Look for an even, two-digit number between 18 and 60.Before buying an air conditioner, you have to make the AC tonnage calculation. Not sizing an AC unit properly can cause $100s in wasted unit costs or future electricity costs. You can use the 'tonnage per square foot' formula to calculate how many tons of AC you need.

Home » How to determine what size window air conditioner you need June 6, 2013 August 18, 2021 / 4 Comments / Heating and Cooling , Tips / By diyrepair A properly-sized air conditioner unit will maximize energy efficiency, remove humidity in the air and ensure your space is cool and comfortable throughout the season.How do you determine AC tonnage? Your AC tonnage can easily be found by going outside and looking on the AC unit itself. When outside, you should see a data plaque mounted to the side of the condensing unit. Look for the model number, which is a combination of numerals and letters.Read the next line of information to determine the air conditioner's capacity. The label CFM (cubic feet per minute) may be identified. This is the amount of air the unit will distribute throughout the ducting system. Read the next line, which may specify "ton" or "BTU" (British Thermal Units). The two are interrelated.How many tons is Trane central air conditioner model 2TTB2? It is 2.5 ton with standard non-TXV evaporator coil. Read More. How do you figure out how many tons your air conditioner is? its in the model number 12, 24,18,36,48 is in the model and the number stands for btu 1000 per 2txb120098=12000btu=1 ton Read More. How many tons air conditioner ... When people speak of size in reference to air conditioners, it doesn't refer to the physical dimensions of the appliance itself.Rather, it means the cooling capacity as measured in BTUs (British Thermal Units). Whether you are choosing a window air conditioner or a central air unit, you will get the best efficiency, and therefore lower operating costs, if you choose based on the size of the ...

Haitian kompa events in boston
Robocopy delete old files in destination
Foreclosure homes in dover delaware

913 posts, read 4,051,409 times Reputation: 777. Advertisements. What you need to know when buying a new A/C (air conditioner) I have spent about 2 weeks learning the residential HVAC practices and comparing brands/models. Now you can benefit from this.,Air Conditioner Sizes The smallest air conditioner is 1.5 tons or 18,000 BTUs and they can increase in size up to 5 tons or 60,000 BTUs by increments of one-half ton or 6,000 BTUs. For a rough calculation to select an air conditioner for your home, you can take your total square footage, multiply it by 25, divide it by 12,000, and subtract .5.Rheem Manufacturing ranks as the global leader in the manufacture of high-quality, sustainable, and innovative water heaters, tankless water heaters, air conditioners, furnaces, pool heaters, and HVAC systems for residential and commercial applications, and is a full member of AHRI, the Air-Conditioning, Heating, & Refrigeration Institute. * All pros listed are independent dealer-owned ...Simply divide the BTUs by 12,000 to calculate the tonnage of your unit. For example, if your air conditioner is 36,000 BTUs, you have a 3 ton unit. Some manufacturers bury tonnage or BTU information in their model numbers. Look for an even, two-digit number between 18 and 60. The first four digits of the serial number are week and year of manufacture, in this case, week 13 of 1989. How to identify ac tonnage.Carrier a/c compressor condenser model# 38xd12400 (same unit as used for the serial number example above), there is variation in how carrier assigned these numbers but typically the numbers indicate either tonnage or mbtuh. How Do I Find the Tonnage of My AC Unit? Details: Aug 09, 2018 · Divide the number by 12 (which represents 12,000 Btu/hr, or one ton of cooling capacity) to get your AC unit's tonnage.Locate your exterior ac unit. That's because goodman lives up to its name in … › posted at 6 days ago Most hvac contractors can look up the tonnage of the system by using the model. The easiest place to find ac tonnage is on the ac unit itself. The first digits in the m/n number indicate the unit type and seer rating.Read more to find out how to properly dispose of your air filter or if your dirty air filter is recyclable. Most Common Air Conditioner Filter Sizes At Air Filters Delivered, we offer more than just standard size filters.May 19, 2020 · But no worries about having to do any confusing equations—luckily there’s a convenient list for figuring how much A/C power you need for a room, based on the room’s square footage: 150 – 250 sq. feet: 6,000 BTUs. 250 – 300 sq. feet: 7,000 BTUs. 300 – 350 sq. feet: 8,000 BTUs. 350 – 400 sq. feet: 9,000 BTUs. 400 – 450 sq. feet ... air conditioner tonnage calculation : how to find air conditioner size. Sharing buttons tonnage of your ac unit what i have.Simply divide the BTUs by 12,000 to calculate the tonnage of your unit. For example, if your air conditioner is 36,000 BTUs, you have a 3 ton unit. Some manufacturers bury tonnage or BTU information in their model numbers. Look for an even, two-digit number between 18 and 60.

4 Signs of an Oversized Air Conditioner. From feelings of exasperation to increased energy costs, an oversized air conditioner can cause discord in your home. But all hope is not lost, Homeowner. Read on to learn the signs of an oversized air conditioner and what you can do if your AC is too large for your space. 1. Your AC System Short Cycles,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.How do you read a carrier tonnage? The easiest way to look trane tonnage model number is on the ac unit itself. You can determine the "nominal" condenser Just like the nominal size of lumber or an air conditioning filter, the exact cooling capacity may be a little more or less than the nominal rating, but...

How. Details: Finding the tonnage of your AC unit may be as simple as walking outside and reading the label on the condenser unit. Most of the time, manufacturers don't list tons, though; they list BTUs instead. Lucky for you, we already taught you that math! Simply divide the BTUs by 12...,Craigslist chicago northwest suburbs for saleUse our fact sheet to help read and use the ZERL when choosing a new air conditioner. Some types of air conditioners will be required to display the ZERL when they are on display in store. Current models for sale or display in stores may have registrations that run through to 2025 and can continue to use the old Energy Rating Label (ERL) until ... Finding the tonnage of your ac unit may be as simple as walking outside and reading the label on the condenser unit. How to check ac tonnage from You will see the model number or m/n number under the brand name. Find tonnage on old sears ac unit, model number 76981605 report this by manage...You need to take into account the size of the room, the number and size of windows, the height of the ceilings and the climate. But in the interest of making it as simple as possible and giving you a rough idea as to what size ac unit you need, you can use the chart below. These figures are based on a room with 8-foot ceilings, 2 windows and 1 ...The Tempstar AC model NXA636GKA100 number is a quality air conditioning unit. The tonnage number refers to the amount or unit of cooling and the seer number is for the efficiency.Central air conditioners and heat pumps use capacitors. A capacitor keeps an electrical charge on standby to provide it to the motor when it first turns on. Over time, a capacitor will wear out; you must replace it so your air conditioner or heat pump continues to work properly. Before you buy a new one, you must ensure it's the correct size.4 Signs of an Oversized Air Conditioner. From feelings of exasperation to increased energy costs, an oversized air conditioner can cause discord in your home. But all hope is not lost, Homeowner. Read on to learn the signs of an oversized air conditioner and what you can do if your AC is too large for your space. 1. Your AC System Short CyclesThe first four digits of the serial number are week and year of manufacture, in this case, week 13 of 1989. How to identify ac tonnage.Carrier a/c compressor condenser model# 38xd12400 (same unit as used for the serial number example above), there is variation in how carrier assigned these numbers but typically the numbers indicate either tonnage or mbtuh. When you see or hear the term "tonnage" or "tons" as it relates to AC, it's not referring to the weight of the unit. Tonnage refers to the cooling capacity of any given system. Tons are measured in British Thermal Units, or BTUs. Generally, one ton of air conditioning can remove 12,000 BTUs of heat each hour.Finding the tonnage of your ac unit may be as simple as walking outside and reading the label on the condenser unit. How to check ac tonnage from You will see the model number or m/n number under the brand name. Find tonnage on old sears ac unit, model number 76981605 report this by manage...

Air conditioning equipment age from serial number for the example above, the equipment was made after 1980. Air conditioning and heat pump system capacities are offered in what is referred to as tonnage. The system capacity will be coded into the model number of the outdoor unit.,Escape plan 3 watch onlineQwickLoad is an easy, fast and accurate computer software program for calculating heat loss & gain for residential & commercial buildings for sizing HVAC systems. Add the cost, SEER rating and tonnage of the air conditioner units you’re looking to buy. Obviously, you’re going to need some air conditioner estimates to use this tool. We can also help with that. Contact us online for an air conditioner installation estimate. Or just call us at (770) 421-8400 and we’ll set up an appointment. How Do You Determine the Tonnage of Goodman AC Units? 13/4/2020 · Goodman air conditioning unit tonnage can be determined by the unit's How many tons is my Rheem air conditioner or heat pump? 19/3/2019 · You can determine the "nominal" condenser tonnage of your HVAC system by...Finding the tonnage of your AC unit may be as simple as walking outside and reading the label on the condenser unit. Most of the time, manufacturers don't list tons, though Compressor Installation on Air Conditioning Unit... Trane how old is it? How To Replace Capacitor on Old Rheem AC Unit 10...Jul 17, 2021 · Goodman air conditioning unit tonnage can be determined by the unit's model number. The model number includes the nominal cooling capacity in three digits beginning with zero. 3rd Generation 7 Colors Mini Air Conditioner Artic Air Beneath the brand name, you should see an m/n number or “model number”. May 20, 2021 · Image via bryantrv.com. Whether at home, in your car, or in your RV, most modern air conditioners use special cooling chemicals, called refrigerants, to help lower the temperature of hot ambient air. Basically, the AC unit picks up the hot air in the vehicle (or home, or whatever) via an intake vent, and then runs the air over evaporator coils ... The standard is 1. 5 hp per ton. Which is 4. 5 nominal hp for a 3-ton unit. 746 watts in a hp, times 4. 5, 3357 watts, for residential, divide by 220 for 15. 26 amps. The fan adds a little but not much, so a 20 amp 220 volt breaker would work.An air conditioner with this compressor is considered a 2.5-ton unit. The three-digit number inside the model number specifies the ton rating that the manufacturer has given it. So even though the CRJ3-0300-PVF compressor has a cooling capacity of nearly 3.2 tons, it's rated at 3 tons. You can decode the capacity of your air conditioner from ...Answer (1 of 3): Best way I've found is to read it off the nameplate on the machine. If it has an inside and outside unit, it is often only on the outside unit, but I have yet to find one that didn't have its rated kw for both heating and cooling on the plate. Otherwise, find the model number and...

Step 3. Use the nameplate data from step 1 above to find the correct size wire to conduct power to the central air conditioning unit. Table 310-16 shows that three wires of 6-gauge placed in a conduit will safely conduct 65 amperes of power. The voltage range for this wire falls between 0 volts and 2,000 volts.,Read 11 answers by scientists to the question asked by Maharaja Kamatchi on Dec 27, 2017 ... For 1.5 ton AC ,power consumption of ac =cooling capacity/EER ... This AC Unit Operating Cost ...Figuring out an accurate HVAC size involves 2 basic steps. But there are a lot of details to consider in the process. STEP 1: Determine how many BTUs of heating and tons of AC you need. Method 1: Manual J Calculation. The best way to determine the perfect HVAC unit size is to have a Manual J calculation done for your house. The Manual J ...The first step is to convert the unit's size (tons) to BTU-per hour. For reference: A one-ton AC unit is rated for 12,000 BTU-per hour. (5 tons) × (12,000 BTU/h/ton) = 60,000 BTU/h. The next step is to determine how much you pay in kilowatt-per-hours compared to the unit efficiency rating.For example, a window that is 24 inches wide by 30 inches tall would be written as 24" X 30". In the manufacturing industry, this standard window size is referred to as a 2030 or 2 feet by 3 feet. In a rectangular swimming pool, the dimension might read 16' X 30' X 9' or 16 feet wide by 30 feet long and 9 feet deep.But choosing the right size window AC unit or central air conditioner for your room or whole home isn't just a matter of more is better. In fact, getting an air conditioner that's too large for your house could create just as many problems as one that's too small. If the air conditioner is too big, it could lead to your unit cycling on and off ...What size dual run capacitor for YORK 3 ton ac/heater roof mount unit. model# ***** serial# ***** I discarded the old capacitor without recording … read more. Michael Ferryman. 1,641 satisfied customers. I am trying to locate an evaporative coil to attach to my.May 20, 2021 · Image via bryantrv.com. Whether at home, in your car, or in your RV, most modern air conditioners use special cooling chemicals, called refrigerants, to help lower the temperature of hot ambient air. Basically, the AC unit picks up the hot air in the vehicle (or home, or whatever) via an intake vent, and then runs the air over evaporator coils ... Air conditioning tonnage has nothing to do with weight. A ton, as used in the HVAC field, is a term that describes how much heat the AC unit can A 4 ton air conditioner is one that can remove 48,000 BTUs of heat per hour from the house. For most people, though, 4 tons means 8000 pounds.As a general rule of thumb, for AC power consumption calculation you should take, 1 ton of cooling = 1,000 watts. 1.5 ton of cooling = 1,500 watts. 2 ton of cooling = 2,00 watts. 3 ton of cooling = 3000 watts and so on. Now use the below calculator to calculate your AC power consumption.The Tempstar AC model NXA636GKA100 number is a quality air conditioning unit. The tonnage number refers to the amount or unit of cooling and the seer number is for the efficiency.Jul 17, 2021 · Goodman air conditioning unit tonnage can be determined by the unit's model number. The model number includes the nominal cooling capacity in three digits beginning with zero. 3rd Generation 7 Colors Mini Air Conditioner Artic Air Beneath the brand name, you should see an m/n number or “model number”. The AC tons will be labelled on the unit itself. In stores or online they are generally categorised the AC You should always decide tonnage of your AC as per your room size and how effectively you To decide the perfect size please read my another answer at Quora here. Hope this answer helped to...

If there was a problem anywhere it would reflect in the pressures. Good pressures in an ac unit mean it will blow cold air inside. But we don't leave it at that. We charge to perfection, so flip through the digital display on your gauges until they display super-heat and sub-cooling.,When you see or hear the term "tonnage" or "tons" as it relates to AC, it's not referring to the weight of the unit. Tonnage refers to the cooling capacity of any given system. Tons are measured in British Thermal Units, or BTUs. Generally, one ton of air conditioning can remove 12,000 BTUs of heat each hour.Goodman air conditioning unit tonnage can be determined by the unit's model number. The model number includes the nominal cooling capacity in three digits beginning with zero. 3rd Generation 7 Colors Mini Air Conditioner Artic Air Beneath the brand name, you should see an m/n number or "model number". How to determine ac tonnage from […]Tonnage is a measurment for the ac, 1 ton-12000 btus. The ac dose the cooling. the furnace simply blows the air, so if its a good furnace, and sized Simply add the split system to the existing furnace. If you want the tonnage of the ac size, let me know your homes squarefootage, age, condition.Read 11 answers by scientists to the question asked by Maharaja Kamatchi on Dec 27, 2017 ... For 1.5 ton AC ,power consumption of ac =cooling capacity/EER ... This AC Unit Operating Cost ...Online calculator to calculate the daily or monthly usage cost of your air conditioning unit. The Ac Operating Cost is calculated based on the factors like Equipment Size, Electric Rate, Cooling Hours and SEER (Seasonal Energy Efficiency Ratio).The split type room air conditioner is comprised of two parts. 1) The outdoor unit, The outdoor unit, fitted outside the room, houses components like the compressor, condenser and expansion valve. 2) The indoor unit. The indoor unit comprises the evaporator or cooling coil and the cooling fan. The split air conditioner can be used to cool one ... 2-Ton Air Conditioner - 15 amps; 3-Ton Air Conditioner - 18 amps; 4-Ton Air Conditioner - 21 amps; Then, multiply the amps by the voltage of your outlet (220V is the standard) to get the wattage of your unit (W used per hour). Finally, multiply the number by your current electricity rate to find your hourly HVAC cost to run. You can use ...

Tonnage The unit of measure used in air conditioning to describe the cooling capacity of a system. One ton of cooling is based on the amount of heat needed to The exterior portion of the AC system called the compressor. Congratulations on learning how to determine the age of an Air Conditioning...,A simple and useful Air Conditioner (AC) Unit Tonnage calculator to calculate how much ton AC would be required for your room or house. The cooling capacity of Air conditioners is logically determined by their tonnage. ACs for household usually designed with a capacity of 1 ton, 1.5 ton...How many tons is Trane central air conditioner model 2TTB2? It is 2.5 ton with standard non-TXV evaporator coil. Read More. How do you figure out how many tons your air conditioner is? its in the model number 12, 24,18,36,48 is in the model and the number stands for btu 1000 per 2txb120098=12000btu=1 ton Read More. How many tons air conditioner ... A simple and useful Air Conditioner (AC) Unit Tonnage calculator to calculate how much ton AC would be required for your room or house. The cooling capacity of Air conditioners is logically determined by their tonnage. ACs for household usually designed with a capacity of 1 ton, 1.5 ton...How many tons is Trane central air conditioner model 2TTB2? It is 2.5 ton with standard non-TXV evaporator coil. Read More. How do you figure out how many tons your air conditioner is? its in the model number 12, 24,18,36,48 is in the model and the number stands for btu 1000 per 2txb120098=12000btu=1 ton Read More. How many tons air conditioner ... Jul 06, 2017 · This is when the unit tries to draw too many amps. Typically this is when it starts up and is a sign the motors are going bad. If the motor bearings are worn, then it draws a lot of current to try to get the motor to rotate, thus tripping the breaker. In this case the compressor may be going bad. An inefficient air conditioner unit that collects and disperses dust particles from your home compromises more than just the unit itself. Dust and debris particulates can fill up your duct system, albeit on a small scale, can cause cardiovascular and respiratory problems, as well as act as an irritant.

1,000 Tons Of Air Conditioning to Kilowatts = 3504. 40 Tons Of Air Conditioning to Kilowatts = 140.16. 10,000 Tons Of Air Conditioning to Kilowatts = 35040. 50 Tons Of Air Conditioning to Kilowatts = 175.2. 100,000 Tons Of Air Conditioning to Kilowatts = 350400. 60 Tons Of Air Conditioning to Kilowatts = 210.24. ,Simply divide the BTUs by 12,000 to calculate the tonnage of your unit. For example, if your air conditioner is 36,000 BTUs, you have a 3 ton unit. Some manufacturers bury tonnage or BTU information in their model numbers. Look for an even, two-digit number between 18 and 60. Converting Btu to tons is fairly simple. One ton is equivalent to 12,000 Btu. A rule of thumb if you haven't mathematical computed your HVAC needs is to use 1 ton for 500 square feet. Thus, you ...How many tons is Trane central air conditioner model 2TTB2? It is 2.5 ton with standard non-TXV evaporator coil. Read More. How do you figure out how many tons your air conditioner is? its in the model number 12, 24,18,36,48 is in the model and the number stands for btu 1000 per 2txb120098=12000btu=1 ton Read More. How many tons air conditioner ...Let's look at a Trane brand air conditioner as an example. Capacity: Trane has used a number of different methods for encoding capacity information in the model number. It is commonly found in the first three digits - sometimes as BTUs and sometimes as tons. Example: SPCC-B504-A = 5.0 ton, or; TWS748A = 48,000 BTU = 4 tonThe Best Temperature Settings When You're Away. Keeping your house warmer while you are away can help you save even more money this summer. Turning your thermostat up seven to 10 degrees F (two to three degrees C) higher while you are away at work, or any time you're out of the house for more than two hours, can help you save as much as 10 percent on cooling costs. Jul 17, 2021 · Goodman air conditioning unit tonnage can be determined by the unit's model number. The model number includes the nominal cooling capacity in three digits beginning with zero. 3rd Generation 7 Colors Mini Air Conditioner Artic Air Beneath the brand name, you should see an m/n number or “model number”. Air conditioning equipment age from serial number for the example above, the equipment was made after 1980. Air conditioning and heat pump system capacities are offered in what is referred to as tonnage. The system capacity will be coded into the model number of the outdoor unit.The tonnage, or capacity of the system is coded in the model number. Tonnage is a measure of btu's in 12,000 btu increments. If not, you can contact the manufacturer for more information based on your model number. Divide the number by 12 (which represents 12,000 btu/hr, or one ton of cooling capacity) to get your ac unit's tonnage.Understanding Size: What Do TON and SEER mean? Air conditioner sizes are rated in tons of cooling capacity. One ton of cooling is equal to 12,000 BTU's (British thermal units) per hour. For example, a typical residential unit is a 2-ton unit that cools 24000 BTU/hour and a larger 3-ton unit cools 36000 BTU/hour.

However, the drawback is, air conditioner designers and contractors have to flip-and-flip-back the pages to get necessary data. A chart, named known as the psychrometric chart is formed, incorporating all six parameters. Data referencing made easy. Psychrometric chart is defined as the representation of air properties, in graphical form. ,To size your mini split air conditioner, the most important thing you need to know is the square footage of the room you're looking to cool and/or heat. Each indoor unit will be capable of providing a set number of BTU's of cooling and heating power. In order to size your mini split correctly, you will need to know the square footage of the room, and check it against our table.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.Jul 17, 2021 · Goodman air conditioning unit tonnage can be determined by the unit's model number. The model number includes the nominal cooling capacity in three digits beginning with zero. 3rd Generation 7 Colors Mini Air Conditioner Artic Air Beneath the brand name, you should see an m/n number or “model number”.

The system capacity is almost always coded into the model number of the outdoor unit. In most cases you can use the conversion information below to help in determining the size of your existing air conditioner system (use the system model number NOT the serial number) 18 = 1.5 tons. 24 = 2 tons. 30 = 2.5 tons.,How to read an air conditioner's EnergyGuide label. One great way to learn a little more about a specific air conditioner is to examine the bright yellow EnergyGuide label.These labels are required by the Energy Labeling Rule for both room and central air conditioners, and they pack a lot of information into a small space. EnergyGuide labels are a useful way to quickly compare similar models ...The most commonly used terms are Ton (often referred to as tonnage), BTU/hour, or Watts (of cooling power). Tonnage. The tonnage of an air conditioner is not related to its weight. Tonnage indicates the cooling capacity of the aircon. 1 A ton of air conditioning is the cooling effect provided by one short-ton (907 kg) of ice melting over 24 ...The cooling load and heating load calculators on fairair.com.au, by the Australian Institute of Refrigeration, Air Conditioning and Heating (AIRAH), are worth using; they allow you to factor in a lot of details about the room, its insulation, window orientation and more, to get an accurate guide to the right air-conditioner size.The easiest place to find AC tonnage is on the AC unit itself. Not all air conditioning companies do this, but most will give you a 2 or 3 digit section in AC model number that says how many thousands of BTU/hour your air conditioner can cooling of your house.Finding the tonnage of your AC unit may be as simple as walking outside and reading the label on the condenser unit. Within this string of letters and How to Determine AC Tonnage From Model Numbers. How can I figure out the tonnage of my AC unit. My best guess is 1968 from the 2nd group...

Bmw junction box recall

Capacity: Look for those elusive two digits in the model number (usually, but not always) divisible by 6 and divide by 12 to convert to tons. Example: RPGC-037JA = 3 ton. Age: Four digits of serial number indicate date of manufacture where first two indicate the week and the third and fourth are the year.