Evacuating the HVAC
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Laughing Gas
Joined: Jan 2019
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From: Florida
Evacuating the HVAC
So, has anyone had to evacuate their HVAC system using a vacum pump. What are the steps necessary to drain it? Which port does the vacum pump get hooked up to? Looking for a few tips as I have never done it before yet still researching it. I want to change the Condenser,Orifice Tube, and the Dryer (accumulator). Any tips would be helpful. It's a 2002 F 250 XLT Crew Cab too.....210K
Senior User
Joined: Dec 2003
Posts: 123
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From: Kearney NE
It will be far cheaper to hire it done than to buy the equipment needed for one job.
at a minimum you will need a reclaimer, reclaim tank, vacuum pump, nitrogen regulators, manifold gauges, micron gauge.
at a minimum you will need a reclaimer, reclaim tank, vacuum pump, nitrogen regulators, manifold gauges, micron gauge.
Senior User
Joined: Dec 2003
Posts: 123
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From: Kearney NE
did not mean to scare you off, maybe your system is flat empty and you can skip the reclaimer. (Don’t vent the Freon, the fine starts at $10,000.00. And the person that reports you gets a big chunk.
New User
Joined: Feb 2005
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Machine
We have a machine at work that does it all. Hook it up, program it, and it will do everything. You need to at least know the basics to use one and have the certification. The machine runs about 3500 to start, maybe you could have a small garage do it for you for a small fee. If it does not leak, they work well for years. This is for R134 only, which most trucks on the road today are.
Fleet Owner
Joined: Apr 2008
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From: 0,0,1
So, has anyone had to evacuate their HVAC system using a vacuum pump. What are the steps necessary to drain it? Which port does the vacuum pump get hooked up to? Looking for a few tips as I have never done it before yet still researching it. I want to change the Condenser, Orifice Tube, and the Dryer (accumulator). Any tips would be helpful. It's a 2002 F 250 XLT Crew Cab too.....210K
Fleet Owner
Joined: Apr 2008
Posts: 24,318
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From: 0,0,1
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Posting Guru
Joined: Aug 2007
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From: BA, OK
Agreed I purchased a pump and gauges years ago. Of course my neighbors hit me up to fill a leaking system more than I use them on my own vehicles.
Can't speak of the quality of this kit but it has everything you would need to pull a vacuum and refill a system for under $100 minus the refrigerant and can piercer.
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Senior User
Joined: Apr 2013
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From: Canada's Wet Coast
Agreed I purchased a pump and gauges years ago. Of course my neighbors hit me up to fill a leaking system more than I use them on my own vehicles.
Can't speak of the quality of this kit but it has everything you would need to pull a vacuum and refill a system for under $100 minus the refrigerant and can piercer.
https://www.amazon.com/F2C-3-5CFM-Va...dp/B01AAB2YCU/
Can't speak of the quality of this kit but it has everything you would need to pull a vacuum and refill a system for under $100 minus the refrigerant and can piercer.
https://www.amazon.com/F2C-3-5CFM-Va...dp/B01AAB2YCU/
and really using gauges to diagnose systems is a no brainer
Fleet Owner
Joined: Apr 2008
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From: 0,0,1
For a family member I even used my automotive AC equipment to recharge a 4-zone home mini-split system for $20 in R410-A refrigerant. The contractor wanted $800 just to charge they system and another $3K to find the leak. I bought a leak detector off Amazon for $35 and found the leak in under 10 minutes, then fixed within another 10.
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