Articles and Tips

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All Articles and Tips

Title	Published Date	View Count
10 Reasons Why a Mini-Split Ductless Flare May Leak Refrigerant!	05/20/2020	21769
10 Reasons a Blower Fan Won't Start in a Furnace, AC or Heat Pump	07/27/2022	9104
20 Causes of Low Indoor Airflow on Ducted HVAC Units!	04/14/2021	3805
40 Vacuum Tips for HVACR Technicians! Avoid Frustration!	07/22/2020	17568
6 Reasons Why a Furnace Blower Fan Motor Won’t Shut Off!	05/03/2022	12991
ATTIC FANS! Troubleshooting Common Problems!	06/14/2022	1171
Adjusting the Airflow Speed on ECM Blower Fan Motors! (Variable & Multi-Speed Types)	05/19/2021	42723
Adjusting the Furnace/AC Airflow Speed on a 120v PSC Blower Motor!	05/12/2021	6781
An Additional Valve Core Removal Tool for your Vacuum Gauge! (Quick Tip)	04/14/2020	1955
Can I measure a Negative Subcooling When Checking the Charge? (Quick Tip)	06/29/2020	2807
Can you Braze Mini-Split systems instead of Flaring them?	09/12/2019	10988
Charging a System in a Dry Climate? Consider a TXV and Accumulator!	06/11/2020	3593
Checking the Charge of Air Conditioners without Measuring Pressure!	07/16/2020	9512
Checking the Charge of a Mini-Split Unit!	05/06/2020	97649
Clogged Liquid Line Filter Drier?	08/19/2020	18961
Connect Your Gauges Sooner Than Later! (Quick Tip)	04/28/2020	1572
Copper Tube Bending Tools and Methods	06/08/2022	2079
Copper Tube Swaging and Deburring Tools!	07/13/2022	2160
Determining the Cause of a Liquid Line Restriction Problem!	09/02/2019	15575
Don't Get Locked Out! Locking Port Cap Quick Tip!	06/22/2021	2726
Ductless Mini-Split Step-by-Step Installation	11/25/2020	7998
Filter Drier, Solenoid Valve and Liquid Line Sight Locations in a Refrigeration System	01/28/2020	4043
Finding a Low Voltage Short Quickly, Step by Step!	04/08/2021	31332
Finding an Airflow Problem using Static Pressure Measurements!	06/21/2022	2491
Free Shrader Valve Refrigerant Leak Tester (Quick Tip)	04/28/2020	1760
Fridge or Freezer Compressor Not Starting? Test Start Relay, Overload, Capacitor, PTC Thermistor	04/18/2022	6913
Gas Furnace Electrical Safety Switch Testing!	04/21/2021	5135
HVAC DELTA T (ΔT) Explained for Air Conditioners!	03/25/2020	49338
HVAC Electrical Training Board For Wiring, Components, Wiring Diagrams, Troubleshooting	06/01/2021	11524
Heat Pump Pressure Switches	04/05/2019	8343
How NOT to Check the Refrigerant Charge!	05/28/2020	5075
How the Gas Pilot Light Functions and 10 Reasons Why the Pilot Light Goes Out or Won’t Stay Lit!	12/26/2019	7066
How to Find Common, Start, and Run on a PSC Compressor Motor!	04/28/2021	15970
How to Tell if a TXV Has Lost Part of its Bulb Charge! (Quick Tip)	05/01/2020	5650
Is There an Easy Way to Tell if a Mini-Split Ductless Unit is Low on Refrigerant? (Quick Tip)	08/06/2020	10677
Is a Triple Evacuation Necessary for a Deep Vacuum?	05/04/2020	1512
Measuring Negative Superheat on an Air Conditioner? (Quick Tips)	05/01/2020	1926
Measuring a Liquid Line Restriction Problem!	08/27/2019	6580
Newer Methods that Make us Better Techs and Reduce Labor and Frustration! Top 15!	10/10/2019	2409
Pressure Testing Gas Lines for Leaks! Natural Gas and Propane (LP)	05/09/2022	15123
Protect Your Micron Gauge! (Quick Tip)	04/28/2020	1422
R-22 and R-410A Operating Pressures, Charging and Recovery Setup!	06/24/2020	185012
Recovery Bottle Weight	04/05/2019	7107
Should I Check the Refrigerant Charge with Superheat or Subcooling?	04/19/2019	17729
Suction Line Accumulator Tank Function, Location, & Purpose	07/20/2022	1728
Superheat vs. Total Superheat	04/05/2019	3144
TOP 5 HVAC CONTACTOR Troubleshooting Problems!	06/30/2021	12508
TXV Bulb Mounting Position and External Equalization!	05/26/2021	8767
Target Superheat	04/15/2019	57491
Testing Capacitors	04/18/2019	22162
Testing if an HVACR Compressor is Shorted to Ground, Open, or the Thermal Overload is Tripped!	04/11/2022	15709
The Benefits of Using an Ultrasonic Leak Detector to Find Refrigerant Leaks!	02/03/2021	12719
The HVAC Subcooling Charging Method, Explained!	04/08/2020	88073
The Total Weight Method	04/15/2019	4098
Tips For New HVACR Instructors with Ty and Craig!	06/28/2022	968
Top 10 Gas Water Heater Pilot Light Problems! When It Won’t Stay Lit!	05/06/2021	10052
Top 10 Thermostat Related Problems	03/31/2020	10022
Top 4 Reasons Why a Gas Furnace Short Cycles	01/08/2020	4611
Top Ten Interview Tips to Land that HVAC/R Job!	09/07/2022	1147
Troubleshooting a Cad Cell Flame Detector for an Oil Burner!	12/15/2021	6692
Troubleshooting an Air Conditioning System with a Frozen Evaporator	08/21/2019	5855
Troubleshooting an HVAC Control Board? How?	09/23/2020	24533
Understanding Triple Evacuation	09/24/2019	18129
Using the Total Superheat Charging Method for HVAC Units!	04/16/2020	30625
What Components are in a Forced Air Gas Furnace? What do they Do?	10/21/2020	6048
When Installing or Replacing an Air Conditioner, Use These Procedures for the Refrigerant Tubing!	06/09/2021	5379
Where To Find R-22 & R410A Leaks on AC Units! Top 10 Spots!	09/29/2022	2813
Why Can’t You Just Measure Pressures to Check a Refrigerant Charge?	04/22/2020	62533
Why Do Some Evap Coils Leak While Others Do Not? (Quick Tip)	08/06/2020	2052
Why a Start Capacitor Fails and Testing!	07/06/2022	3119

Title	Published Date
10 Reasons Why a Mini-Split Ductless Flare May Leak Refrigerant!	05/20/2020
10 Reasons a Blower Fan Won't Start in a Furnace, AC or Heat Pump	07/27/2022
20 Causes of Low Indoor Airflow on Ducted HVAC Units!	04/14/2021
40 Vacuum Tips for HVACR Technicians! Avoid Frustration!	07/22/2020
6 Reasons Why a Furnace Blower Fan Motor Won’t Shut Off!	05/03/2022
ATTIC FANS! Troubleshooting Common Problems!	06/14/2022
Adjusting the Airflow Speed on ECM Blower Fan Motors! (Variable & Multi-Speed Types)	05/19/2021
Adjusting the Furnace/AC Airflow Speed on a 120v PSC Blower Motor!	05/12/2021
An Additional Valve Core Removal Tool for your Vacuum Gauge! (Quick Tip)	04/14/2020
Can I measure a Negative Subcooling When Checking the Charge? (Quick Tip)	06/29/2020
Can you Braze Mini-Split systems instead of Flaring them?	09/12/2019
Charging a System in a Dry Climate? Consider a TXV and Accumulator!	06/11/2020
Checking the Charge of Air Conditioners without Measuring Pressure!	07/16/2020
Checking the Charge of a Mini-Split Unit!	05/06/2020
Clogged Liquid Line Filter Drier?	08/19/2020
Connect Your Gauges Sooner Than Later! (Quick Tip)	04/28/2020
Copper Tube Bending Tools and Methods	06/08/2022
Copper Tube Swaging and Deburring Tools!	07/13/2022
Determining the Cause of a Liquid Line Restriction Problem!	09/02/2019
Don't Get Locked Out! Locking Port Cap Quick Tip!	06/22/2021
Ductless Mini-Split Step-by-Step Installation	11/25/2020
Filter Drier, Solenoid Valve and Liquid Line Sight Locations in a Refrigeration System	01/28/2020
Finding a Low Voltage Short Quickly, Step by Step!	04/08/2021
Finding an Airflow Problem using Static Pressure Measurements!	06/21/2022
Free Shrader Valve Refrigerant Leak Tester (Quick Tip)	04/28/2020
Fridge or Freezer Compressor Not Starting? Test Start Relay, Overload, Capacitor, PTC Thermistor	04/18/2022
Gas Furnace Electrical Safety Switch Testing!	04/21/2021
HVAC DELTA T (ΔT) Explained for Air Conditioners!	03/25/2020
HVAC Electrical Training Board For Wiring, Components, Wiring Diagrams, Troubleshooting	06/01/2021
Heat Pump Pressure Switches	04/05/2019
How NOT to Check the Refrigerant Charge!	05/28/2020
How the Gas Pilot Light Functions and 10 Reasons Why the Pilot Light Goes Out or Won’t Stay Lit!	12/26/2019
How to Find Common, Start, and Run on a PSC Compressor Motor!	04/28/2021
How to Tell if a TXV Has Lost Part of its Bulb Charge! (Quick Tip)	05/01/2020
Is There an Easy Way to Tell if a Mini-Split Ductless Unit is Low on Refrigerant? (Quick Tip)	08/06/2020
Is a Triple Evacuation Necessary for a Deep Vacuum?	05/04/2020
Measuring Negative Superheat on an Air Conditioner? (Quick Tips)	05/01/2020
Measuring a Liquid Line Restriction Problem!	08/27/2019
Newer Methods that Make us Better Techs and Reduce Labor and Frustration! Top 15!	10/10/2019
Pressure Testing Gas Lines for Leaks! Natural Gas and Propane (LP)	05/09/2022
Protect Your Micron Gauge! (Quick Tip)	04/28/2020
R-22 and R-410A Operating Pressures, Charging and Recovery Setup!	06/24/2020
Recovery Bottle Weight	04/05/2019
Should I Check the Refrigerant Charge with Superheat or Subcooling?	04/19/2019
Suction Line Accumulator Tank Function, Location, & Purpose	07/20/2022
Superheat vs. Total Superheat	04/05/2019
TOP 5 HVAC CONTACTOR Troubleshooting Problems!	06/30/2021
TXV Bulb Mounting Position and External Equalization!	05/26/2021
Target Superheat	04/15/2019
Testing Capacitors	04/18/2019
Testing if an HVACR Compressor is Shorted to Ground, Open, or the Thermal Overload is Tripped!	04/11/2022
The Benefits of Using an Ultrasonic Leak Detector to Find Refrigerant Leaks!	02/03/2021
The HVAC Subcooling Charging Method, Explained!	04/08/2020
The Total Weight Method	04/15/2019
Tips For New HVACR Instructors with Ty and Craig!	06/28/2022
Top 10 Gas Water Heater Pilot Light Problems! When It Won’t Stay Lit!	05/06/2021
Top 10 Thermostat Related Problems	03/31/2020
Top 4 Reasons Why a Gas Furnace Short Cycles	01/08/2020
Top Ten Interview Tips to Land that HVAC/R Job!	09/07/2022
Troubleshooting a Cad Cell Flame Detector for an Oil Burner!	12/15/2021
Troubleshooting an Air Conditioning System with a Frozen Evaporator	08/21/2019
Troubleshooting an HVAC Control Board? How?	09/23/2020
Understanding Triple Evacuation	09/24/2019
Using the Total Superheat Charging Method for HVAC Units!	04/16/2020
What Components are in a Forced Air Gas Furnace? What do they Do?	10/21/2020
When Installing or Replacing an Air Conditioner, Use These Procedures for the Refrigerant Tubing!	06/09/2021
Where To Find R-22 & R410A Leaks on AC Units! Top 10 Spots!	09/29/2022
Why Can’t You Just Measure Pressures to Check a Refrigerant Charge?	04/22/2020
Why Do Some Evap Coils Leak While Others Do Not? (Quick Tip)	08/06/2020
Why a Start Capacitor Fails and Testing!	07/06/2022