Recent content by Zupdave

Very good info. Probably would not be worth investing in all the equipment including a micron gauge unless you are doing it every day. Also a good question to ask if someone hires a technician to do the final pressure check and vacuum.

Good info. Would you say that pulling a continuous vacuuum at 30” would be sufficient enough to evacuate the lines then? I looked at my old gauges, and it stops at 30 on the vacuum side.

Educate me. Are microns and inhg not the same thing? I assumed microns were just a more accurate measurement.

I’m also questioning the claimed numbers on my cheap chinese mini split! Lol

I’m sure we were. We used to have a air powered vacuum pump at the dealership. We would just let it **** down for about 30 minutes, then charge the system. I’m thinking we had few problems because of the giant reciever/dryer on those older car systems and the old R12.

Oh, here you go. Looks like the lower the micron, the higher the vacuum in inches of mercury. The harbor frieght pump should work then!

Specs on that pump says it will vacuum down to 75 microns? The specs on my unit said to vacuum to 500 microns. I’m not up to par on the whole micron thing. I used to work on cars for a living. Back in the day, we would vacuum an a/c system down to 29 inches of mercury. This would ensure there...

Heck, For $250 you may be able to purchase the equipment yourself. I wonder if any rental places rent a nitrogen tank? https://www.ebay.com/itm/HVAC-A-C-Refrigeration-Kit-R22-R134a-R410A-R407C-Manifold-Gauge-Vacuum-Pump/182612878442?hash=item2a8493646a

Nice!

I was thinking the same thing. My instuctions stated if there was a leak after operating the unit, the entire system would have to be purged and refilled to the specific weight. In my opinion, the charged lines are more of a sales pitch. I can’t imagine an install not having to cut the lines to...

Yes, You can do that, or bleed some out. Might want to consult a HVAC guy for that. They pre-charge these things by weight. I’m not sure how you would measure the amount you are bleeding out.

Another thought is you can even run the refrigerant lines inside, but you need a place for the condensation line to go outside to drain.

Thanks! Question, What is the reason you want the air handler over the workbench? I’m thinking so the outside unit is at the back of the house? Most of these units are pre-charged and mine had a minimum line length of 10 foot, and a max of 40ft. If you installed the air handler over the...

Hello, I just installed this system about a month ago. Its a 12,000 btu 20 seer, 220v purchased from Alpine home air. https://www.alpinehomeair.com/viewcategory.cfm?categoryID=97 My garage is about 400 square foot, with 10 foot ceilings. It has 2 garage doors facing South, that are insulated. My...

Thank you Scotty. I appreciate your customer service and returning my phone call. I am very happy with the end result.