Frequently Asked Questions (FAQ) about Air Conditioning Condensers

Monday, August 30, 2021

A condenser is also called the “outside unit” of a split-system air conditioner. Here’s links to a collection of our articles about them:

Why does an air conditioner condenser unit need to be level? 

How do I understand the air conditioner or heat pump condenser label (data plate)?

What is causing the outdoor unit (condenser) of my air conditioner to shake? 

How can I tell if an air conditioner uses R-22 or R-410A refrigerant? 

What is the average life expectancy of an air conditioner? 

• Can the disconnect box be mounted directly on a heat pump or air conditioning condenser? 

• What is the code for minimum height of air conditioner or heat pump condenser mounting pad/slab above ground?

 Can I convert a heat pump or air conditioner from R-22 refrigerant to R-410A, or switch R-410A to R-22? 

 How can I tell whether the condenser (outdoor unit) is an air conditioner or heat pump?

 What is the small pipe sticking out of the eaves/soffit under the roof overhang?  

• How much clearance is needed around an air conditioner? 

• How can I make my Florida air conditioner last longer? 

What is the requirement for a service receptacle outlet for heating, air conditioning, and refrigeration (HACR) equipment?

Does an old air conditioner use more electricity as it ages?

 Does the condenser (outdoor unit) SEER rating determine the SEER of an air conditioning system? 

 When does the ban on R-22 air conditioning refrigerant take effect?  

 Why is it bad to have a clothes dryer vent near an air conditioning condenser (outdoor unit)?  

 What is an air conditioning heat recovery system? 

 My air conditioner outside unit (condenser) won't start and is making a humming noise. What's wrong?

 The coolant line to the outside unit of my air conditioner is frozen. What's wrong? 

• Does the mounting pad have to be replaced to install at new heat pump or air conditioner condenser (outside unit)? 

• What is the required clearance for access and working space in front a heat pump or air conditioning condenser (outside unit)? 

• What is the difference between a fan coil unit (FCU) and an air handling unit (AHU)?

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