Connect a pressure gauge to the suction line service port
Measure the suction pressure
Convert the suction pressure to saturation temperature using the refrigerant pressure-temperature chart
Place...
Measure the suction line pressure at the evaporator outlet or service port
Convert the measured suction pressure to saturated evaporating temperature using the refrigerant pressure-temperature...
Check local codes, permits, and manufacturer requirements
Choose the correct mini split size and system type
Select indoor and outdoor unit locations
Verify wall strength, clearances, and...
Check local codes, permits, and manufacturer requirements
Confirm the home is suitable for a heat pump
Select the correct heat pump size and type
Gather tools, materials,...
Turn off power to the HVAC system
Remove the thermostat cover
Check for loose, corroded, or disconnected wires
Inspect the batteries and replace them if needed
Verify the...
Turn off power and gas to the furnace
Remove the flame sensor from the burner assembly
Inspect the sensor for dirt, corrosion, or cracks
Clean the sensor...
Turn off power to the HVAC system at the breaker
Remove the thermostat cover
Take a photo of the existing wiring
Label each wire by terminal letter
Disconnect...
Turn off power to the HVAC system at the breaker
Remove the thermostat cover
Take a photo of the existing wiring
Label each wire by terminal letter
Remove...
Check your local licensing and certification requirements
Complete a high school diploma or GED
Enroll in an HVAC or air conditioning training program
Learn refrigeration, electrical systems,...
Turn off the HVAC system
Locate the filter compartment
Remove the access panel or filter cover
Take out the old filter
Check the filter size and airflow direction
Insert...
Turn off the HVAC system
Locate the air filter slot
Remove the old filter
Check the filter size and airflow direction
Insert the new filter in the correct...
Turn off the AC unit
Locate the filter compartment
Open the filter access panel
Remove the old filter
Check the filter size and airflow direction
Insert the new filter...
Turn off the HVAC system
Wear gloves, a mask, and eye protection
Remove and clean vent covers
Vacuum loose dust and debris from ducts
Inspect ducts for mold,...
Turn off the HVAC system
Remove and replace dirty air filters
Inspect ducts for mold, dust, and debris
Seal off vents and protect surrounding areas
Use a vacuum...
Turn off the appliance and shut off the gas or power supply
Allow the thermocouple to cool completely
Locate and remove the thermocouple according to the...
Measure the refrigerant’s saturation temperature at the liquid line pressure
Measure the actual liquid line temperature
Subtract the actual liquid line temperature from the saturation temperature
Use...
Turn off power to the appliance
Locate the flame sensor
Remove the flame sensor wire connection
Remove the flame sensor from the burner assembly
Inspect the sensor for...
Disconnect the negative battery cable
Recover the refrigerant with proper HVAC equipment
Remove the drive belt
Disconnect the electrical connector from the compressor
Disconnect the refrigerant lines from...
Check the unit’s nameplate for the correct refrigerant type
Confirm the system is actually low on refrigerant
Turn off power to the AC unit
Wear safety glasses...
Turn off power to the air conditioner at the thermostat, disconnect switch, and breaker
Verify power is off with a multimeter
Remove the access panel to...
Choose the indoor and outdoor unit locations
Verify electrical requirements and local code compliance
Gather tools, mounting hardware, refrigerant line set, drain line, and wiring
Turn off...
Turn off the system or vehicle
Locate the air filter housing
Open the filter cover or access panel
Remove the old air filter
Check the filter size and...
Verify the system uses a refrigerant type you are certified to handle
Turn off power to the HVAC or refrigeration system
Inspect for leaks and repair...
Turn off the HVAC system
Remove vent covers
Wash vent covers with warm soapy water
Dry vent covers completely
Vacuum inside the vent openings
Use a brush attachment to...
Turn off the furnace
Locate the air filter slot
Remove the filter cover or access panel
Slide out the old filter
Check the filter size and airflow direction
Insert...
Turn off the HVAC system
Locate the air filter compartment
Open the filter cover or access panel
Remove the old air filter
Check the filter size and airflow...
Turn off the air conditioner
Locate the filter compartment
Open the access panel or remove the cover
Remove the old filter
Check the filter size and type
Insert the...
Turn off the AC unit
Locate the filter compartment
Open the filter access panel or remove the return vent cover
Remove the old filter
Check the filter size...
Earn a high school diploma or GED
Take math, physics, and shop or technical classes
Enroll in an HVAC certificate or diploma program
Learn refrigeration, electrical systems,...
Check the thermostat settings
Replace the thermostat batteries
Reset the circuit breaker
Replace the air filter
Clean the condenser coils
Clear debris around the outdoor unit
Check the air vents...
Assess the property’s heating and hot water demand
Check insulation levels and improve them if needed
Choose the correct heat pump type
Size the heat pump using...
Turn off the HVAC system
Remove vent covers and registers
Vacuum loose dust from vents and openings
Use a brush to loosen buildup inside accessible ducts
Clean vent...
