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David A. Andersen & Asoc.
Home Inspector Nashville TNInfrared Thermal Imaging Inspections |
DavidAndersen's blog
Answer to Ben's HVAC Questions
"...the inspector is required to inspect the system..."
You can't inspect a SYSTEM without understanding its COMPONENTS.
What is the HVAC component? What's its function? What condition would make this component a defect or safety hazard? How would its condition affect the entire HVAC system's performance or safety?
What is the HVAC component? What's its function? What condition would make this component a defect or safety hazard? How would its condition affect the entire HVAC system's performance or safety?
What is the HVAC component? What's its function? What condition would make this component a defect or safety hazard? How would its condition affect the entire HVAC system's performance or safety?
What is the HVAC component? What's its function? What condition would make this component a defect or safety hazard? How would its condition affect the entire HVAC system's performance or safety?
Describe this type of system? What component could indicate to you whether this system is installed upside down?
ANALOGY: Understanding how the condition of one defective shingle relates to the performance of the entire roof system is equivalent to understanding how the condition of one defective component relates to the performance of the entire HVAC system.
You desire to know more about HVAC...
You want total confidence about HVAC...
You want to know more than just how to turn on the thermostat...
This HVAC Course is for you... It's written for home inspectors... Not too much... But more than just basics....
1. The arrow points to a crossover tube on a gas furnace burner assembly. Its function is to light all the adjacent burners and itself from the pilot. , improper combustion will occur. The slots on this burner tube often get too large after they have been cleaned of rust and have improper air fuel mixture. Blockage of the burner tube will often cause flame rollout and activation of the rollout safety switch.
2. A humidifier screen. Its function is to displace water which flows from top to bottom to allow evaporation to occur and humidify the air passing through the furnace or air handler.
3. A hydronic circulating pump. It does not have a function because it is not hooked up to an electrical supply! :-)
4. Compressor with belly band heater. Its function is to create a pressure differential across the refrigerant circuit. The compressor is hooked up to oversized suction line piping which may cause reduced velocity and loss of compressor oil.
5. Gas furnace. Flue pipe.
If rusted
Submitted by DavidAndersen on Wed, 03/18/2009 - 17:03.
