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Old 11-02-2010, 06:46 AM   #1
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torry61


New guy here, How do I propperly releave the pressure in a central air unit, & can I use the same line set on a new unit? The old unit is about 25 years old.

Thanks
Tor

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Old 11-02-2010, 07:01 AM   #2
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torry61


The refrigerant in the system needs to be recovered using proper refrigerant recovery equipment.

*Warning, venting refrigerants into the atmosphere from most existing AC systems is illegal*

Chances are that your old system contains R22 refrigerant. A new residential system will use R410-a. The two refrigerants are incompatible and the lineset should be changed. Let me know if you want me to list the reasons why.

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Old 11-02-2010, 07:07 AM   #3
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torry61


R U aware if the recovery equipment can be rented? I live in the Chicago area?
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Old 11-02-2010, 07:24 PM   #4
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torry61


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Originally Posted by torry61 View Post
R U aware if the recovery equipment can be rented? I live in the Chicago area?
Yes. You can rent recovery equipment.

You need an EPA section 608 certification to rent it though.
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