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HVAC Charts Complete Product LIst

superheat title
superheat calculatorR-410a Superheat & Subcooling Calculator
This tool is used for charging cooling systems that use R-410a Refrigerant. One side of this tool is a slide chart used for calculating superheat for a NON-TXV system and the other side is a slide chart used to calculate subcooling on a TXV system. The photo shows both sides of the tool. This tool is made of thick durable water resistant paper stock with corner rivets. It fits easily in your shirt pocket at approximately 6.25 inches high by 3.25 inches wide.
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subcooling calculatorR-22 Superheat & Subcooling Calculator
This tool is used for charging cooling systems that use R-22 Refrigerant. One side of this tool is a slide chart used for calculating superheat for a NON-TXV system and the other side is a slide chart used to calculate subcooling on a TXV system. The photo shows both sides of the tool. This tool is made of thick durable water resistant paper stock with corner rivets. It fits easily in your shirt pocket at approximately 6.25 inches high by 3.25 inches wide.
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duct sizing calculatorDuct Sizing Calculator
The Duct Sizing Calculator is a hand held sliding calculator used for sizing supply and return duct systems using the equal friction, or velocity reduction design method. Front of calculator includes scales for friction, velocity, round duct size, weight per linear foot of round duct, surface area in square feet per linear foot of round duct, rectangular equivalents of round duct sizes, weight per linear foot of rectangular duct and surface area in square feet per linear foot of Rectangular duct. Back of calculator has equivalent feet of straight duct for commonly used fittings, corrected pressure drop chart, and many HVAC formulas. Pull out slide has recommended duct velocities, recommended gauges for sheet metal, and much more. The photo shows front and back sides of the calculator. Calculator is made of thick durable water resistant paper stock with glued edges and corner rivets. Calculator measures 4 inches high and 8.5 inches wide.
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ductalator calculatorDuctulator
The Ductulator - Duct Sizing Calculator is a hand held rotating calculator used for sizing supply and return duct systems using the equal friction design method. Includes scales for friction loss per unit length, air volume, air velocity, round duct diameter, and rectangular duct diameters. One side uses English units, the other side uses Metric units. Includes a protective sleeve with ASHRAE recommended design air velocities for system components/applications.

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humidity calculatorHumidity Calculator Pocket Slide Tool
This tool is used to calculate humidity using wet and dry bulb temperatures in Celsius or Fahrenheit. This guide is simple to use, just line up the wet and dry bulb temperatures and read the relative humidity percentage in the window. On the back side is a guide for recommended humidities for specific applications. This item is made of thick cardboard stock with metal corner rivets and measures 7 inches long by 2 inches wide.
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refrigeration calculatorRefrigeration Calculator Guide to Back and Head Pressure
This tool is a guide to calculating back and head pressures on refrigeration systems that use R12, R134a, R22, R123, R404a, R407c, R410a, R507, and R508b refrigerants. On the front of the guide is a sliding chart to calculate back pressure, air temperature and head pressure for specific suction temperatures and condenser temperatures. This guide is simple to use and takes the guess work out of checking proper charge of a system. On the back side is a color chart for start, run and common wires on specific models of compressors. Also on the back is a thermostat control setting chart for different types of equipment and a guide for evaporator temperatures. This item is made of thick cardboard stock with metal corner rivets and is 7.25 inches long by 3.5 inches wide.
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capillary tube calculatorCapillary Tube Calibrator and Trouble Shooting Calculator
One side of this tool is used to translate the equipment manufacturers' recommended capillary tubing into sizes which are readily available. The other side is a troubleshooting calculator that simplifies the job of diagnosing cooling system trouble where the capillary tube is suspect. The troubleshooter has a column with symptoms, one with possible causes and a window that shows the repair. This item is made of thick cardboard stock with metal corner rivets and is 8.5 inches long by 3.25 inches wide.

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trouble shooting calculatorTrouble Shooting Calculator for Air Conditioning and Refrigeration Systems
This tool is used for trouble shooting air conditioning and refrigeration systems. On the front and back sides of the guide is a comprehensive chart with 19 categorized symptoms, possible causes and repairs. This is a very useful tool for troubleshooting almost any type of problem. This item is made of thick cardboard stock with metal corner rivets and measures 10 inches tall by 4 inches wide.

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