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Is Your Circuit Breaker Sized Correctly?

Checking the Blower Speed

What You're Missing When Ohming a Gas Valve

Troubleshooting a Furnace by Isolating the Thermostat

Pressure Switch Troubleshooting

Flue Vent Limit

Clearing Fault Codes (Hot Gas Defrost Board)

Venting from 2 inch to 3 inch PVC

New Blower Charts for G7 Single-Stage Furnaces

Limit Circuit Testing with Ohms

Is Your Reversing Valve Energized?

Safety First - Remember Your Glasses

Understanding Compressor RLA

Troubleshooting the Open Limit Fault

Positive Temperature Coefficient Resistor (PTCR)

Superheat Calculator

Where is the Wiring Diagram Number?

Troubleshooting a Unit Tripping the Circuit Breaker

Charge ME!

Pressure Switches In Inverter Driven Units

Using a Professional Refrigeration Scale

Charging Sticker Part 2: Air Conditioner

Should You Weigh In Extra Charge?

What Causes Flood Back?

Charging Sticker Part 1: Heat Pump

Outdoor Unit Location

Clearing Fault Codes In Inverter Driven Units

Calculating Charge on a Piston-Drive System

Finding the Right Charging Info

Refrigerant Cylinder Safety

Troubleshooting the Refrigerant Circuit

Service Do's and Don'ts

Quick Reference Data Sheets (QRDs)

Where to Install the Filter Drier

Checking Line Temperature on the Reversing Valve

Measuring Line Voltage the Right Way

Troubleshooting a Furnace by Isolating the Thermostat

Checking the Blower Speed

Condensate Piping

What You're Missing When Ohming a Gas Valve

Furnaces and FER - What You Need to Know

Troubleshooting the New Single-Stage Blower Motor

Is Your Circuit Breaker Sized Correctly?

Troubleshooting Flame Failure

Blower Motor Not Running?

Two Ways to Hook Gauges up to a Heat Pump

Thermostats Compatible with the BG Line

Getting the Correct Replacement Parts

Understanding The Limit Switch in a 2-Stage Furnace

Replacing an Inducer Motor (High Efficiency Furnace)

Next Generation Split System Design for Manufactured Housing Applications