--- product_id: 184670890 title: "HVAC Quick Reference Cards for Refrigerant Charging and Troubleshooting" brand: "ac service tech llc" price: "฿3276" currency: THB in_stock: true reviews_count: 13 category: "Ac Service Tech Llc" url: https://www.desertcart.co.th/products/184670890-hvac-quick-reference-cards-for-refrigerant-charging-and-troubleshooting store_origin: TH region: Thailand --- # 3 double-sided cards Weather & UV resistant Temp tested 0°F-130°F HVAC Quick Reference Cards for Refrigerant Charging and Troubleshooting **Brand:** ac service tech llc **Price:** ฿3276 **Availability:** ✅ In Stock ## Summary > 🛠️ Master HVAC like a pro—charge, troubleshoot, and conquer every system with ease! ## Quick Answers - **What is this?** HVAC Quick Reference Cards for Refrigerant Charging and Troubleshooting by ac service tech llc - **How much does it cost?** ฿3276 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/184670890-hvac-quick-reference-cards-for-refrigerant-charging-and-troubleshooting) ## Best For - ac service tech llc enthusiasts ## Why This Product - Trusted ac service tech llc brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Trusted by Pros:** Ranked #4 in Air Conditioning Diagnostic Equipment with 4.7-star reviews from 1,477 technicians. - • **Compact & Portable:** Three double-sided cards sized 5.63 x 8.88 inches fit easily in your toolkit or pocket. - • **All-in-One HVAC Toolkit:** Includes subcooling, superheat, Delta T, P/T charts, and refrigerant weight calculations. - • **Built to Brave the Elements:** Durable polystyrene cards resist weather and UV damage for long-lasting use on the job. - • **Precision at Your Fingertips:** Quickly measure refrigerant levels with TXV and fixed orifice metering guides. ## Overview These HVAC Quick Reference Cards by AC Service Tech LLC provide technicians with a durable, weather-resistant, and compact toolset for accurate refrigerant charging and troubleshooting. Featuring three double-sided polystyrene cards tested for extreme temperatures, they include essential charts and guides for subcooling, superheat, Delta T, and refrigerant weight calculations, making them an indispensable resource for HVAC professionals. ## Description These three HVAC quick reference polystyrene cards are double sided and designed to be used with Air Conditioners and Heat Pumps to measure the refrigerant level in a unit, charge refrigerant, troubleshoot refrigerant based problems, and measure heat transfer to determine if there is a problem. Find the Target Subcooling to measure the refrigerant level of systems with a TXV metering device Use Subcooling to determine if a system is undercharged, correctly charged, or overcharged Find the Target Superheat to measure the refrigerant level of systems with a fixed orifice metering device Use Total Superheat to determine if a system is undercharged, correctly charged, or overcharged Use Delta T to determine if the system is exchanging heat properly Use the P/T Chart to find the Saturated Temp of 5 common refrigerants Use the Guide to determine how to find the Bubble and Dew Saturated Temps of Blend Refrigerants Use the Refrigerant Weight Chart to calculate the amount of refrigerant needed per foot of tubing Use the Guide to weigh in the full or partial refrigerant charge into an empty vacuumed unit Review: HVAC acservicetech.com charts - Excellent reference charts! High quality and easy to use! Review: Thank you for making these quick reference cards! - These are awesome and handy to have! Every service tech needs them for quick problem solving! ## Features - Flexible - Weather and UV Resistant - Polystyrene Card Material Tested 0°F-130°F - Three Cards Double Sided per Pack - HVAC Technician Resource ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B082895BBX | | Best Sellers Rank | #44,727 in Automotive ( See Top 100 in Automotive ) #8 in Air Conditioning Diagnostic Equipment | | Brand | AC Service Tech LLC | | Brand Name | AC Service Tech LLC | | Color | Multicolor | | Customer Reviews | 4.7 out of 5 stars 1,480 Reviews | | Item Dimensions L x W | 8.88"L x 5.63"W | | Item Weight | 3 ounces | | Manufacturer | AC Service Tech, LLC | | Manufacturer Part Number | QRCRCT | | Material | Plastic, Polystyrene | | Material Type | Plastic, Polystyrene | | Model Number | QRCRCT | | Number of Packs | 1 | | Sheet Count | 3 | | Size | 5.63 x 8.88 inches | | UPC | 860003018705 | | Unit Count | 1 Count | ## Product Details - **Brand:** AC Service Tech LLC - **Color:** Multicolor - **Item Weight:** 3 ounces - **Material:** Plastic, Polystyrene - **Size:** 5.63 x 8.88 inches ## Images ![HVAC Quick Reference Cards for Refrigerant Charging and Troubleshooting - Image 1](https://m.media-amazon.com/images/I/51GHWyXCIjL.jpg) ![HVAC Quick Reference Cards for Refrigerant Charging and Troubleshooting - Image 2](https://m.media-amazon.com/images/I/41c3JcbImsL.jpg) ![HVAC Quick Reference Cards for Refrigerant Charging and Troubleshooting - Image 3](https://m.media-amazon.com/images/I/5179TJuwkrL.jpg) ![HVAC Quick Reference Cards for Refrigerant Charging and Troubleshooting - Image 4](https://m.media-amazon.com/images/I/511D1zhwP0L.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ HVAC acservicetech.com charts *by M***R on August 17, 2026* Excellent reference charts! High quality and easy to use! ### ⭐⭐⭐⭐⭐ Thank you for making these quick reference cards! *by E***U on July 27, 2026* These are awesome and handy to have! Every service tech needs them for quick problem solving! ### ⭐⭐⭐⭐⭐ Essential HVAC info *by S***O on August 28, 2025* Lots of important info packed into these 3 cards. Especially good for new techs or DIY'ers. Even pros will find something new and useful. PT charts are handy, although digital gauges have the database built-in. Cards are plastic, clearly printed both sides in color. I will be keeping mine in a zip-lok bag to prevent scratching in my toolbag. A good troubleshooting reference - worth the money! ## Frequently Bought Together - AC Service Tech LLC HVAC Quick Reference Cards for Refrigerant Charging and Troubleshooting - Refrigerant Charging and Service Procedures for Air Conditioning 2nd Edition - Inverter Mini Split Operation and Service Procedures --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.th/products/184670890-hvac-quick-reference-cards-for-refrigerant-charging-and-troubleshooting](https://www.desertcart.co.th/products/184670890-hvac-quick-reference-cards-for-refrigerant-charging-and-troubleshooting) --- *Product available on Desertcart Thailand* *Store origin: TH* *Last updated: 2026-10-31*