TruTech Tools has got you covered! Do not mix old and new batteries. Please install a supported browser such as Chrome, Firefox, Microsoft Edge or Safari. it can be frustrating to measure charge out of a can with a scale. Part # 22985 $124.82 EACH Add to Cart YELLOW JACKET 220 lb. For commercial work settings, a tech will need a more high-capacity scale with optimum durability. Please, reload the page. Sign up to receive email about product launches, events, deals & more! $157.83. A Refrigerant Charging Scale is ideal for HVAC and refrigeration service, including the critical charging of small refrigeration systems. The Harbor Freight manifold gauge set has, on the center connection where you connect the yellow hose, two fittings. A more durable platform with more supported surface area might serve you better than a scale with a higher weight capacity. Digital Shipping Postal Scale, Black (W-8580-110-Black), ZENY Portable 220 Lbs Digital Refrigerant Electronic Charging Scale HVAC AC R134a Manifold Gauge Set with Case, Car A/C AC Oil and Dye Injector Refrigerant Tools with Snap Quick Coupler 1/4" SAE,for R410A, R-134A, R22 and R12 Charger,2 OZ Refrigerant Hand Turn Screw-in Type Scale, by NAKAO, Fieldpiece SR47 Wireless Scale with Remote, Mastercool 98201 High Precision Refrigerant Charging Scale Designed for R600 and R290, CPS CCD110 Refrigerant Charging Scale, 110 lb Capacity, Fuzion Shipping Scale, Accurate Digital Postal Scale 86 lb/0.1 oz with Hold and Tare Function, LCD Display, Postage Scale for Packages and Mailing, Battery and AC Adapter Included, Accuteck 440lb Heavy Duty Digital Metal Industry Shipping Postal Scale (ACB440), Fuzion Digital Shipping Scale, 440lbs x 1oz High Accuracy Postal Scale, Hold/Tare Function, Manual/Auto Off LCD Display, Lightweight Scale for Packages/Luggage/Home, Battery & AC Adapter Included, Fuzion Shipping Scale 360lb with High Accuracy, Stainless Steel Heavy Duty Postal Scale with Timer/Hold/Tare, Digital Postage Scale for Packages/Luggage/Post Office/Home, Battery & DC Adapter Included, Yellow Jacket 68862 220 lb. In Stock. Most customers usually ask the following questions about refrigerant scales and their techniques. Ferguson Enterprises, LLC. 2023 This refrigerant scale also has a two-year warranty. I have a 30 lb jug of R12 which I'll vent some into a bottle and repeat . The slip resistant platform handles all types of refrigerant cylinders with ease. loyalty program Your display needs to keep pace with the charge of liquid going into the system. I will show you how to recharge or top off your car's air conditioner with Freon R134 using the Harbor Frei. The Robinair TIF9010A is one of the best and most accurate refrigerant scales offered by Robinair. Help us improve Model to Part Search by sending feedback. $981.69 $273.99 Sale. very sturdy. Charging scales can easily charge refrigerants. Precise high side (0-500 PSI) and low side (0-120 PSI) pressure readings Color coded gauges, valves and hoses to ensure correct installation Large 2-1/2 in. Harbor Freight carries thousands of in-stock replacement parts for our most popular items. Johnsen's 12 oz. It comes with a standard ACME threaded cap for use with simple screw on charge hoses and professional technician air conditioning manifold gauge tools. Please enter a valid list description value. Outside the US, consult your local board for regulations as well. Still, if you ever suspect an error, do calibrate it at the earliest. Its portable, reliable, and durable and will last you for many years. There are different levels of certification based on the types of appliances you work with. Product Overview This precision digital scale has an easy-to-read LCD display that shows weight in ounces, grams, or pounds up to 11 lbs.. When you prevent too much moisture in compressed air, you can avoid problems like corrosion of . The measurements on this scale are shown in pounds, ounces, and kilograms. The patented Qwikboost formula was developed by NASA to provide maximum cooling power. EZ Chill R-134a Auto AC Recharge Kit with Leak Sealer Plus - 18 OZ. Voltage (V): 115 Volt. The formula also safely seals most common leaks in rubber hoses, gaskets and O-rings and features moisture and acid eliminators to help protect and extend the life of your air conditioning system. VAPrivacyRights| Refrigerant Scales These scales are used to measure the weight of a refrigerant cylinder, to help you precisely measure how much of a certain refrigerant is added to a refrigerant recovery system. Below are the simple steps, which you can follow for easygoing usage of refrigerant scales. Flexible long coil design Rugged, compact design, completely portable. Accuracy: 98.5 Percent. In addition, this scale supports tank capacity programming which helps the user find out how much refrigerant is left inside the cylinder. Thanks. This precision digital scale has an easy-to-read LCD display that shows weight in ounces, grams, or pounds up to 11 lbs.. Find many great new & used options and get the best deals for 12V DC Charging-Cable For Harbor Predator 2000W Inverter Generator Charging, at the best online prices at eBay! Part #: AC1234-4SL Line: ROB. | High side liquid refrigerant charging, 5. We've sent your manager an email requesting an approval. Johnsen's R-134a is proudly made and packaged in the USA for use in all factory installed and/or retrofitted R-134A auto A/C systems. Some scales will lag in their readings, which can affect the accuracy. / 176 OZ. Ships from and sold by Amazon.com. Refrigerant Scale Charging Modules, sorted by Type, ascending, Refrigerant Scales, sorted by Type, ascending. Caveat: you pay full retail for the used items. No Hassle Return Policy 100% Satisfaction Guaranteed PrivacyPolicy&Security| the first scale i used was a $25 70-pound capacity digital postal scale from harbor freight. Although it is comparatively a bit expensive, its high capacity is very useful for technicians. anotheridiot Member Designed from high-quality, wear-resistant materials, this scale also includes a nine-inch by nine-inch weighing platform that is slip-resistant. Moisture and acid eliminators help protect and extend the life of your air conditioning system, System-safe leak sealer safely seals most common leaks in rubber hoses, gaskets, and O-rings. Terms of Sale| The readings are accurate up to +/-0.5% and a resolution of 5g. $158.08 $ 158. AccuTools DS-220R Refrigerant Scale 220 lb, Fieldpiece SRS1 - Residential, Light Commercial Refrigerant Scale 110 lb, UEi Smart Wireless Refrigeration Scale 110lb, UEi Smart Wireless Refrigeration Scale 220lb, NAVAC NRS2i01 Electronic Wireless Scale 220 lb, UEi Smart Wireless High Capacity Refrigeration Scale 330 lb, Supco PCS220 Programmable Charging Scale 220 LB, Hilmor RSWL220 Wireless Refrigerant Scale 220lbs, NAVAC NRS3i01 Large Wireless Refrigerant Charging Scale, Testo 560i Automatic Charging System with Digital Scale, Intelligent Valve and Case, Testo 560i Digital Bluetooth Scale with Case, Fieldpiece SR47 Wireless Electronic Refrigerant Scale 252lbs, CPS CC220 Refrigerant Charging Scales 220lb Electronic Scale, CPS CC800A Refrigerant Charging Scales 220lb Programmable Electronic Scale. Do not mix alkaline, standard (carbon-zinc), or rechargeable (nickel-cadmium) batteries. Sign in failed. Everything you need to test, evacuate and refill lost refrigerant. Flare Fittings, YELLOW JACKET Plus II 60 in. Note: Product availability is real-time basis and adjusted continuously. 95-$29.95 $ 29. If for ANY reason you are not satisfied with this item, you may return it within 90 days for a full refund or replacement. Find more info about me and HVAC Training 101. Build low pressure for control setting or leak detecting, 6. No Hassle Return Policy 100% Satisfaction Guaranteed Investing in excellent refrigerant scales is a must for any HVAC Tech. Copyright Hose Set R/Y/B with Compact Ball Valve End, JB Industries QC 1/4 in. Terms of Site Use| can thats small enough for topping off your A/C system, yet large enough to make charging an empty system quick and effective with just a few cans. NOTE: Do not use scale for commerce or trade. Get it as soon as Saturday, Apr 15. We put a mini-split heat pump in our attic . Compact Refrigerant Scale, YELLOW JACKET Plus II 60 in. Refrigerant Charging Scales and Accessories, JB Industries Atlas 250 lb Wireless Digital Refrigerant Scale with Wired Handset, Service Solutions US 220 lbs. Dont forget that handling refrigerants requires certification through the Environmental Protection Agency. One has a schrader valve in it, the other doesn't. . Consider your personal needs before purchasing. The administrator has indicated that your orders must be approved by your manager. Do Not Sell or Share My Personal Information. order Undo, All Filters Removed Every scale has a different weight capacity, so youll want to be sure to get one that is suitable for the systems you work on regularly. MAHLE Solutions Air Conditioning Service System. Red Hose with Standard 1/4 in. We have 0 in stock. Scales not only vary in durability, power, and size, they also range in sensitivity and precision. Refrigerant Recovery Electronic Scale, Simbow Portable High Accuracy HVAC Weight Scale Charging Valve 220 lbs/100kgs, Carrying Case Included 4.7 (26) $7999 - $10999 Save 5% with coupon FREE delivery CONTENT LIST Moreover, this scale also has a pause-charge module that comes in handy in case of faulty connections or leaks in the hose. This helps in recording the measurements accurately. How precise do you need the scale to be? Note: Specifications are approximate and subject to change. This scale is powered by an alkaline battery which has a battery life of almost 40 hours. Wireless Refrigerant Scale Outmate Digital Crane Scale 300kg/660lbs 200kg/440lbs with LED Handheld Mini Hanging Scale for Garage Farm Hunting Fishing Etc(300kg/Plastic Shell/Orange) 4.6 out of 5 stars 2,429. After the technician weighs the existing refrigerant inside the cylinder, he can either add or remove refrigerant to achieve the most energy-efficient levels. Flare Fitting Seal Kit (Box of 10), Flaretite 1/4 in. Hose Included: Yes. Sign In to access your account information. Here is a comprehensive refrigerant scale buyers guide and reviews of some of the best scales on the market. For the best experience please upgrade or visit the site on another browser. Don't get scammed by websites pretending to be Harbor Freight. The LED displays allow the end-user to read the results in a more convenient way. Flare Fitting Seal Kit (Box of 10), Flaretite 3/8 in. Hilmor RSWL220 Wireless Refrigerant Scale 220lbs. A large display that can be read from far away is useful when working in tight spaces. Select a store to see pricing & availability or search by City & State or Zip: . The jifetor harborfreight refrigerant recovery tank allows for a thorough internal cleanup, removing the residual refrigerants to avoid damage to the components. You will need a scale that reads out numbers in the units that you use! The Kozyvacu electronic refrigerant scale is a simple HVAC scale which is available at very affordable rates. The industry standard for accuracy is a scale that is accurate to the .5 oz. Too much or too little refrigerant can create long-term issues on the compressor from strain, thus shortening the lifespan of the equipment. Add to Cart. Mastercool 69110 Automotive A/C Recovery System,Blue. Refrigerant Scale, Fieldpiece Instruments Wireless Refrigerant Scale 252 lb Capacity, YELLOW JACKET Plus II 60 in. then I upped to a luggage digital hanging scale. This article will discuss the ins and outs of refrigerant scales, discussing everything from functionality to durability. Harbor Freight Tools - Quality Tools at Discount Prices Since 1977 Sign In My List 0 My Cart Shop Coupons New Tools Deals Shop All Brands Member-Only Deals Join Inside Track Club Credit Card Join Our Team Something went wrong. Undo, Something went wrong with our inventory service. Scales accurately measure the weight of refrigerant in a cylinder while a system is being charged. Refrigerant Scales are a must-have resource for HVAC techs. All rights reserved. For any difficulty using this site with a screen reader or because of a disability, please contact us at 1-800-444-3353 or cs@harborfreight.com. Technicians should place the refrigerant cylinder onto the scale to weigh it. These scales are used to measure the weight of a refrigerant cylinder, to help you precisely measure how much of a certain refrigerant is added to a refrigerant recovery system. Harbor Freight and Walmart! Pump Free-Air . Sitemap Compact Design Greatly Increases its Portability, LCD Readout Panel Serves as a Display Indicator, Provides Inordinate Reliability and Improved Performance, 24-Month Warranty Provided the Unit is Not Tampered With, Can Conveniently Handle 30-Pound and 50-Pound Refrigerant Cylinders, Hand-Held Reader Relieves the Technician From Constantly Looking at the Scale, High Electrical Noise Can Sometimes Result in Inaccurate Readings, Not suitable for heavier cylinders as the capacity is limited to 110 pounds, Lack of an Auto-Shutdown Button Can Cause the Power to Drain So the User Doesnt Have to Turn Off the Scale, Operating Temperature: 32F to 120F (0C to 49C). Part # SRS3 $357.88 EACH Add to Cart YELLOW JACKET Plus II 60 in. Your recently viewed items and featured recommendations, Elitech LMC-100F Refrigerant Charging Weight Scale High Precision for HVAC with Case 110Lbs, Elitech LMC-300 Electronic Refrigerant Charging/Recovery Scale HVAC A/C Wired Remote,Weight Scale 220lbs/100kgs, Elitech LMC-210A Refrigerant Charging Scale for HVAC Wireless Remote 330lbs/150kgs. Vacuum pump evacuation. x 1/4 in. DoNotSellorShareMyPersonalInformation| As the liquid or gas is removed from the compressor the scale measures its weight. Nest is POO!! And then get a full refund when you bring them back. To properly estimate and bill clients for refrigerants, it is important that techs have access to precise readings. 100% Satisfaction Guarantee! Not for medical use. The greatest advantage of this scale is the various cylinder sizes that this scale can support. Compact, Sleek Design Allows for Easy Portability, Highly Accurate Measurements Make it Very Reliable, Able to Manage the High Capacity of up to 240 Pounds, Supports All Refrigerants, Programmable Recovery and Charging, Measurement Mode Can Be Selected With the Help of Touch Key Controls, Auto-Shut Off Feature Automatically Turns the Scale Off After Three Hours of Inactivity, Flexible, Long Cord Connects the Reader to the Scale Thus Allowing Technicians to Read the Values Without Straining Their Backs, A Bit Expensive Than Other Scales Available, Operating Temperature: 32F to 113F (0C to 45C). Don't get scammed by websites pretending to be Harbor Freight. DoubleWrench 1.76K subscribers Subscribe 108K views 2 years ago How to vacuum and recharge your AC with harbor freight tools (Venturi pump and manifold gauge). Consider some of these factors to find the best fit for your personal or company needs: For the most accurate readings, a bigger scale isnt always more precise. App-Operation and Compatibility with Digital Manifolds, Aprvtio ACS-100A Refrigerant Scale HVAC, R134a R410a Freon Scale Digital 220 lbs/100kgs,AC Refrigerant Recovery Machine,with Case 2023 New Upgrade Water Dust and Oil Resistant, Inficon Wey-TEK HD Wireless, Refrigerant Charging Scale, 719-202-G1, Weighmax W-2809 90 LB X 0.1 OZ Durable Stainless Steel Digital Postal Scale, Shipping Scale With AC adapter, 1 Pack, Mastercool 98202 - High Precision Charging Scale with Plastic Case, Smart Weigh 440lbs x 6 oz. If for ANY reason you are not satisfied with this item, you may return it within 90 days for a full refund or replacement. We have invested millions of dollars in our own test labs and factories, so our tools will go toe-to-toe with the top professional brands. Check the status of your High efficiency pre-refrigeration system is three times faster, takes 60% less power to operate Accommodates compressors up to 21.6 CFM, 140 PSI max Lowers the dew point to 36F Not for medical use Recommended operating pressure: 100 PSI. Then fix the hoses and attach the gauges properly. They help to accurately weigh how much refrigerant is being placed into refrigeration units. . Three display modes: kgs, lbs and oz. For California consumers: more information about our privacy practices. Digital Heavy Duty Shipping and Postal Scale, with Durable Stainless Steel Large Platform, UPS USPS Post Office Postal Scale and Luggage Scale, ACCUTECK All-in-1 Series W-8250-50bs A-Pt 50 Digital Shipping Postal Scale with Ac Adapter, Silver, Eisen 36585 Digital Refrigerant Charging Weight Scale for HVAC A/C 220 Lbs with LCD Display & Three Measurement Unit Options, ACCUTECK ShipPro 110lbs x 0.1 oz. The Mastercool 98210 is an electronically programmable scale designed to provide exceptional reliability and quality performance. A scale with a larger platform might be what you need. Refrigerant scales are used not only when initially installing refrigeration units, but also during routine maintenance and repairs. Packaged Terminal Air Conditioners & Heat Pumps, Through the Wall Condensing Units & Heat Pumps, Air Conditioning & Refrigeration Controls. or 5000 grams), Three modes of measuring: grams, ounces and pounds, Tare setting calculates net weight of items in containers, Sealed buttons to prevent damage from spills. As of April 1st, 2022, Internet Explorer will no longer be supported on the Johnstone ecommerce sites. 2-3/4" easy to read big dial with color coded scale, and sight window on the manifold help to monitor refrigerant charging and recovery better and easily. This digital scale weighs precisely in ounces, grams or pounds. FREE delivery Sat, Apr 22 . Overweight Item subject to $14.95 additional Freight Charge. Youre seeing this ad based on the products relevance to your search query. As far as the best refrigerant scales are concerned, the above-reviewed products will be more than enough for you. The patented Qwikboost formula was developed by NASA to provide maximum cooling power. Type: Refrigerant Recovery Equipment. Not for sale in California or Washington. Are you using the scale to bill clients? Yellow Hose with Standard 1/4 in. Important Safety Information 1. Only 8 left in stock - order soon. Powered by AC/DC wall adapter or 4 AA batteries (sold separately). Air Conditioning Chemicals, Tools and Accessories. $19.95 $ 19. can thats small enough for topping off your A/C system, yet large enough to make charging an empty system quick and effective with just a few cans. From some comments on the internet, I get the impression the older, cheaper leak detectors detect chlorine gas, which 410a does not have. Wireless Probes Digital Gauges Vacuum & Recovery Products A2L Refrigerant Tools Lineset Cleaners Refrigerant Leak Detectors Smart Systems iManifold iConnect Some scales will require this task to be performed manually, while other scales will automatically calibrate the system. Comparison Chart of the Best Refrigerant Scales. You will want a digital scale to measure the refrigerant as it exits the tank and settles into the unit. Flare Fittings, YELLOW JACKET FlexFlow 9 in. View HVAC/R Products Auto A/C Products Refrigerant management systems, refrigeration gauges, vacuum pumps and more - get to know the reliability and time-saving advantages of YELLOW JACKET products. View Profile View Forum Posts View Forum Threads . This compactly designed refrigerant scale is available with a transferable scale. Install the device and reset it. This helps you to bill your customer accurately and keeps the system working at energy efficient, optimal performance levels. We have invested millions of dollars in our own test labs and factories, so our tools will go toe-to-toe with the top professional brands. This item can only be shipped within the 48 contiguous states via Standard Ground Shipping. And we can sell them for a fraction of the price because we cut out the middleman and pass the savings on to you. Once the specified amount is reached, an automatic alarm sets off notifying the user to tell them when to turn off both the cylinder and the scale. I was just wondering if anyone knew if the kind of low cost leak detector one buys at Harbor Freight, for R22/134a/R12, would work on R410a? Learn more about our This HF 92514 detector works with refrigerants which contain chlorine and fluorine such as R134A, R12 and R22. Following are three top refrigeration scales available that allow you to record the precise readings of the amount of refrigerant being used. And we can sell them for a fraction of the price because we cut out the middleman and pass the savings on to you. R-134 refrigerant for use in all factory installed and/or retrofitted R-134A A/C systems. 02-13-2014, 09:12 PM #15. corny. 2023 Johnstone Supply. The highly convenient memory feature allows a system to charge by using an amount that was previously stored in its memory. We have invested millions of dollars in our own test labs and factories, so our tools will go toe-to-toe with the top professional brands. It's just that simple! Seal leaks and eliminate moisture with this arctic freeze refrigerant, Share your product experience to help others, Get 10% Off Your Entire Purchase When You Open a New Account, Get our best deals and latest news delivered straight to you. My name is Bob Wells and I am a retired HVAC tech from Washington state. Robinair R1234Yf Rrr Scale Lock - AC1234-4SL. CAPrivacyRights| 0:00 / 15:15 Intro Review on Harbor Freight's A/C R134A Manifold Gauge Set Clifford Rice 12.7K subscribers 59K views 4 years ago #Harborfreight #Tools #Review Today we are going to review. Its 9-volt alkaline battery lasts for up to 30 hours, while its battery enunciator feature tells the user when its time to replace the battery. Enter the Store, Username, and Email associated with your account. Harbor Freight Tools - Quality Tools at Discount Prices Since 1977 Sign In Track Order Payments Addresses My List Inside Track Club Need Help? Scales accurately measure the weight of refrigerant in a cylinder while a system is being charged. Electronics Hub - Tech Reviews | Guides & How-to | Latest Trends SKU: NRS3i01. / 5,000 G max. 0 Shop Coupons New Tools Deals Shop All Brands Member-Only Deals Join Inside Track Club Credit Card Something went wrong. Don't get scammed by websites pretending to be Harbor Freight. Not for commercial use. We have 20 in stock. SKU # 952441 OEMTOOLS 240lbs Digital Refrigerant Scale Part # 24560 SKU # 752521 TIF Digital Compact Refrigerant Scale Part # TIF9030 SKU # 291299 Mastercool Electronic Charging Scale Part # MSC98210A SKU # 290029 Mastercool Wireless Charging Scale With Solenoid Part # MSC98315 SKU # 510989 Mastercool Charging Solenoid Module Part # MSC98230 1 | Year 2 | Make 3 | Model 4 | Engine 1-24 of 33 Results Items per Page Filter Sort by Price AutoZone R134a Refrigerant 12 oz Part # AZ-R134A SKU # 3275 $1249 Note: Specifications are approximate and subject to change. Limitations apply. Determine the amount of refrigerant you are going to charge in your equipment. All rights reserved. When it comes to using these refrigerant scales, you may incur problems or confusion at some points. Hose Set R/Y/B with 45 SealRight fitting at One End Part # R22985 Item # 286864 Mfr. VAPrivacyRights| Browse from wireless probes, smart systems, refrigerants, vacuum measurements, leak detectors, hoses, and much more. http://www.youtube.com/FergusonEnterprises, https://www.houzz.com/pro/fergusonshowrooms/ferguson-bath-kitchen-lighting-gallery, Select a Store for Accurate Local Pricing, How To Improve Water Heater Efficiency With A Tank Booster, Best Pull-Down Kitchen Faucets That Won't Break The Bank, Drinking Fountains & Bottle Filling Stations, How to Grow Your HVAC Business With Smart Home Installation Services, Tips to Prepare Contractors for Cold Weather, Guide to MaP Toilet Testing for Low Flow Toilets, Benefits of Claiming Your Business on Google, 5 Common Trenching & Excavation Safety Hazards, 4 Tips to Minimize the Dangers of Dust Inhalation, Fieldpiece Instruments Charge and Air Kit, Service Solutions US 110 lb. First of all, zero out the refrigerant scale. And we can sell them for a fraction of the price because we cut out the middleman and pass the savings on to you. Click here to find a For use in factory installed and/or retrofitted R-134A auto A/C systems Comes with standard ACME threaded cap Meets AHRI 700-2006 and SAE J 2276 purity standards 2023 R134a Refrigerant - Car AC Recharge / Refill Kit Spark Plug Contact Us Fluids and Chemicals A/C Charging and Refrigerant R134a Refrigerant Add your vehicle Get an exact fit for your vehicle. Don't get scammed by websites pretending to be Harbor Freight. It is legal and cheap as a tracer gas (3 cans for $11 at Walmart), unlike R22. For any difficulty using this site with a screen reader or because of a disability, please contact us at 1-800-444-3353 or cs@harborfreight.com. Charging Scale with Bag, Fieldpiece SRS2C Wireless Refrigerant Scale, PONO Digital Refrigerant Electronic Scale HVAC Freon Charging Weight Scale, 2021 Upgrade Portable High Accuracy A/C Weight Scale Charging Valve, 220lbs/100kgs,Yellow, Highly accurate refrigerant charging weight scale, Precise and Accurate Digital Kitchen Scales, All customers get FREE Shipping on orders over $25 shipped by Amazon. High side refrigerant purging, 7. Save 32% by shopping at Harbor Freight. Moreover, they are also helpful in detecting any leaks during routine maintenance. weight capacity. 1/4 in. An accurate reading is highly valuable, as it ensures the correct amount of refrigerant is being recovered or charged from the compressor. Even then, we can . Part of the TIF Slimline series, this refrigerant scale features a trademark slim design and is specially built to support system charging and refrigerant recovery. Owner's Manual & Safety Instructions (PDF), Do Not Sell or Share My Personal Information, Maximum capacity of 176 ounces (11 lbs. If a refrigerant scale is used heavily, then more frequent calibration will be required for precise results. Home HVAC Gear Best Refrigerant Scales 2021 Reviews. They also only give you 48 hours, whereas AutoZone gives you 90 days. 4.7 out of 5 stars 430. HVAC Refrigerant Charging Scales, . This scale is able to read tanks that are up to 220 lbs in weight accurately. Brighton, MI. The calibration frequency depends on the use of a refrigerant scale. The scale will display how much refrigerant is being charged. Without correctly gauging how much refrigerant is necessary for cooling units, it can cost building owners big time in extra energy costs. Advanced 3-in-1 compressed air dryer system features modes for pre-refrigeration, evaporation, and air and moisture separation to remove up to 90% of the moisture from your compressed air lines. 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