@hvacknowitall: How to check decay with a single hose... When the micron gauge is close to the pump, (which is okay if you perform a decay to test) it can read lower than the actual system pressure. That's why we must perform a decay test by isolating the system from the pump. We used the @NAVAC NRV1 core tool in this video to perform this test (NRV2 also available). We used the NMV1 micron gauge and NP12DM vacuum pump as well. @supco_hvac Umbrella keeping us shady #hvac #hvaceducation #hvacknowledge #refrigeration #hvacinstallation

HVAC Know It All
HVAC Know It All
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Region: CA
Friday 06 March 2026 00:29:43 GMT
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treybowman04
Trey :
you’re supposed to have the micron gauge as far as you can in the system from the vacuum pump which would be the other line and you can still do that with only one hose
2026-03-06 22:52:46
6
poppagrizz04
Mike Blowes :
Don’t those Navac micron gauges complete their own decay test without having to close off the hose?
2026-03-06 13:41:53
0
chilldad13
Jeramy Oliver :
1 hose 🥺
2026-03-06 02:30:32
3
varthisg
Varthiss_g :
Every one is suddenly an HVAC tech in comments… classic stuff
2026-03-16 21:29:51
0
travishoughtaling
Travis Houghtaling :
Decay test. process only matters to get a pass on the decay. if you can pass decay, it is right.
2026-03-06 10:02:04
1
ghostproducer1
Ghost Producer :
Do you remove the Schrader too?
2026-03-06 08:09:11
0
gotchaplumber
Gotchaplumber :
How much vacuum guage cost?
2026-03-06 17:43:55
0
ardib58
Ardi :
Ur micron is in the wrong spot buddy
2026-03-14 13:07:38
0
toddsimpkinson
Todd Simpkinson :
Why not move it to the other valve?
2026-03-06 18:29:50
0
padreo42
padreo :
Too many leak points remove the valve set up, put the micron gauge on the liquid side
2026-03-06 23:23:19
0
muhammadfaheem1227
R :
I need job
2026-03-06 15:55:59
0
andrew3putts
andrew3putts :
I think the stand you have it on is too small 😂
2026-03-07 07:05:45
1
melbournehvac
Melbournehvac :
Love this setup 🤌🏻
2026-03-08 01:15:44
0
jag1145
G G76748 :
👍👍👍👏👏👏
2026-03-06 01:11:04
1
lrliii
LRLIII :
😁😁😁
2026-03-15 06:24:41
0
deadache
!marsh :
@
2026-06-12 20:44:29
0
jomobudz
Jordan Cameron :
For all you OG’s…. He actually means “2 smokes” if you know, you know lol
2026-03-06 03:17:50
1
tuguyler44
Tuguyler :
Shouldn’t you valve off your micron gauge? So when you break the charge it doesn’t hit the micron gauge?
2026-03-07 23:18:49
0
__c_a_r_l
__🅲_🅰_🆁_🅻 :
The rule we hold is after below 2000 micron we close the valve from vacuum pomp for at least 30 min and is must stay below the 2000 micron 🙏🙏🙏
2026-03-08 22:39:09
0
turbo9321
turbo :
Mini splits only have one port to pull vacuum
2026-03-06 03:38:57
0
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