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Ok a little more detail on single vs two stage HF pump. I exchanged single for two stage and it seems like it got my line down to 900 micron range more quickly than single but I'm still hitting a wall at this level. I suspect a leak because my lines and various hvac adapters are not holding...

OK, 30 minutes later and my microns with this single stage HF pump are down in the 900 to 1000 range. Trying to decide if i just need to run this for hours to see if it can go lower or if I should go back for the 2 stage pump. Before I started all this I hooked the micron gauge directly to...

FYI - the reviews for the harbor freight manifold set did say that they often were leaky, and it appears that I have confirmed mine indeed is. I removed the set from my setup and just used one of the hoses. Now I have vac pump ==> blue hose ==> yellow jacket ball valve ==> tee with CPS micron...

I just ordered some stuff from SupplyHouse.com -- they had pretty good pricing. As someone else said, you might just use a standard flare tee fitting. My CPS vacuum gauge came with a tee fitting with the type of screw downs that the rest of the manifold set uses. You also mentioned crows feet...

I'm in the same boat right now -- trying to vac down my mini split lines. As for single vs two stage, well I have a single stage hooked up as we speak and I am getting down to about 1500 microns based on the CPS vacuum gauge I bought on eBay. I have the gauge hooked up right next to the...

The main thing I have been looking for in selecting lumber is a good narrow edge to be facing upward for the floor surface. I have been taking more crowned lumber and even some with twists than I normally would have as we are able to get things pretty straight when installing the boards. We...

Couple more thoughts -- it does take quite a while but we are able to knock out maybe 4 to 6 feet in a day. This would go faster if you had a few people handling things in an assembly line fashion.... someone on the plane and then feeding things to others installing the boards inside...

So far it looks pretty good. I planed the top surface of each board before installing it with a cheap harbor freight power plane to get it somewhat smooth and to square off the rounded edges just a bit. I didn't stress out too much on this as I'm going for a rustic look anyway so if it isn't...

Got the front door in.

Yeah now I just need to decide what kinds of outlets I want and where. I figure that I'll mostly put in straight 240 outlets for welders plus a couple that are 120/240. I also installed a pedestal for my RV with 20 and 30 amp 120 and 120/240 50 amp. Running a straight 240 circuit for a mini...

Here's my version, in progress....

Well, the power co-op is here installing my 200 amp meter -- turns out it was so cheap to have it installed that it didn't make sense to try deriving power other ways. Just $350 since they only have to trench about 10 feet. Now I have a 200 amp main panel and TWO 100 amp subpanels. And only 7...

Looks like LG has a hard wired thermostat that has dual set points. This may be my most cost effective option. I am assuming that this is compatible with multiple zone units but need to do more research. About $125 per head unit for this. They also have wifi modules but for some reason they...

One other benefit of multiple heads or even better, multiple units, is that it may better allow having a low level of space conditioning when the building is going to be unoccupied for periods of time. From what I can gather, individual heads/units are going to throw everything they have at...

Yeah, in addition to the added efficiency of having two separate smaller units, there is also redundancy should one fail. I'm in deep east texas and not having a working AC is not an option.

Been doing a lot of research into the phone apps -- there are not many solutions out there. LG has one that seems like a pretty inexpensive add on (except you need one module per interior unit). The reviews in the app store are terrible for it and give the impression that it doesn't even work...

One idea I am considering is to have 2 interior heads in each space.... say, one 9K BTU and then an 18k BTU. Both heads would be used when building occupied, but only the 9K BTU units would be left on when I go on vacation with about a 72 degree setpoint but they would be undersized so they...

Thanks for the reply, Dave, but it doesn't sound like you are fully getting what I'm after. I'm really trying to avoid FULLY conditioning space that may be unoccupied for weeks or months at a time. Just want to take the edge off the heat and keep humidity in check during hot days.... and...

The difference in efficiency in the smaller units is pretty baffling to me. Why does the SEER drop so much at 1.5+ tons, especially with multiple indoor units on the same compressor? I'm trying to decide between multiple 12K high efficiency units @ 25 SEER vs a multiple head 30K unit at 16...

Hey folks - I am in the market for a mini split but wondered if some of you who have them can tell me if your units allow for setting the unit to an automatic mode where if it comes on ONLY if it gets extremely hot or cold in the conditioned space. For example, set so that cooling comes on if...