---
product_id: 184670890
title: "AC Service Tech LLC HVAC Quick Reference Cards for Refrigerant Charging and Troubleshooting"
brand: "ac service tech llc"
price: "NT$1827"
currency: TWD
in_stock: true
reviews_count: 8
category: "Ac Service Tech Llc"
url: https://www.desertcart.tw/products/184670890-ac-service-tech-llc-hvac-quick-reference-cards-for-refrigerant
store_origin: TW
region: Taiwan
---

# Compact 8.88" x 5.63" size, fits any toolkit Double-sided, 3 cards with 6 panels total Weather & UV resistant polystyrene AC Service Tech LLC HVAC Quick Reference Cards for Refrigerant Charging and Troubleshooting

**Brand:** ac service tech llc
**Price:** NT$1827
**Availability:** ✅ In Stock

## Summary

> 🛠️ Master HVAC on the Move — Never Miss a Beat with These Pro-Grade Quick Reference Cards!

## Quick Answers

- **What is this?** AC Service Tech LLC HVAC Quick Reference Cards for Refrigerant Charging and Troubleshooting by ac service tech llc
- **How much does it cost?** NT$1827 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tw](https://www.desertcart.tw/products/184670890-ac-service-tech-llc-hvac-quick-reference-cards-for-refrigerant)

## 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

- • **Compact & Ready to Go:** Sized perfectly to slip into your toolbag or pocket—always have critical HVAC data on hand.
- • **Ultimate HVAC Cheat Sheet:** Three durable, double-sided cards packed with essential refrigerant charging & troubleshooting data.
- • **Built to Brave the Elements:** Flexible, weather and UV resistant polystyrene ensures longevity in any work environment.
- • **Precision at Your Fingertips:** Quickly find target subcooling, superheat, and delta T values to diagnose system performance like a pro.
- • **Trusted by Pros & New Techs Alike:** Highly rated resource that bridges the gap between rookie memory joggers and expert-level troubleshooting.

## Overview

AC Service Tech LLC HVAC Quick Reference Cards are a set of three double-sided, weather-resistant polystyrene cards designed for HVAC professionals and enthusiasts. Measuring 8.88" by 5.63", these compact cards provide essential refrigerant charging, troubleshooting, and heat transfer data, including target subcooling, superheat, delta T, and P/T charts for common refrigerants. Durable and portable, they are a trusted, highly rated tool that enhances accuracy and efficiency in the field.

## 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: For New and Seasoned technicians a like - These Cards contain so much valuable information for both new and seasoned technicians. Straight and to the point, no fluff. I love it.
Review: Essential HVAC info - 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!

## 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 |
| Age Range Description | Adult |
| Best Sellers Rank | #16,811 in Automotive ( See Top 100 in Automotive ) #3 in Air Conditioning Diagnostic Equipment |
| Brand Name | AC Service Tech LLC |
| Color | Multicolor |
| Cover Material | Polystyrene |
| Customer Reviews | 4.7 out of 5 stars 1,441 Reviews |
| Finish Type | Glossy |
| Frame Material | Polystyrene (PS) |
| Frame Type | Wrapped Canvas |
| Indoor Outdoor Usage | Indoor |
| Is Framed | No |
| Is Original Artwork | No |
| Item Dimensions L x W | 8.88"L x 5.63"W |
| Item Shape | Rectangular |
| Item Weight | 3 Ounces |
| Manufacturer | AC Service Tech, LLC |
| Material | Cardstock |
| Mounting Type | Wall Mount |
| Number Of Panels | 6 |
| Number of Items | 3 |
| Orientation | Landscape |
| Paper Finish | Glossy |
| Product Dimensions | 8.88"L x 5.63"W |
| Product Style | Double Sided |
| Room Type | Study Room |
| Shape | Rectangular |
| Size | 5.63 x 8.88 inches |
| Special Features | Flexible, Weather Resistant |
| Theme | Double Sided |
| UPC | 860003018705 |
| Wall Art Form | Art Print |

## Images

![AC Service Tech LLC HVAC Quick Reference Cards for Refrigerant Charging and Troubleshooting - Image 1](https://m.media-amazon.com/images/I/51GHWyXCIjL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ For New and Seasoned technicians a like
*by C***O on January 30, 2026*

These Cards contain so much valuable information for both new and seasoned technicians. Straight and to the point, no fluff. I love it.

### ⭐⭐⭐⭐⭐ 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!

### ⭐⭐⭐⭐⭐ Perfect and on point l!
*by J***E on October 5, 2025*

These are super thick and have the EXACT information that I was hoping for!!! As a new HVAC tech, I need some memory joggers! Perfect! Make another set of some more data!!

## Frequently Bought Together

- AC Service Tech LLC HVAC Quick Reference Cards for Refrigerant Charging and Troubleshooting
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*Product available on Desertcart Taiwan*
*Store origin: TW*
*Last updated: 2026-05-17*