I meant how much was the vacuum and gauges? I am not sure if I’m doing 2 to 1 or just two single units as those seem to be cheaper.
Savings analysis of Ductless vs Baseboard
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- Jerico
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The pump and gauges together cost me $230.00.
The dual zones are less expensive than two single units. https://www.sogoodtobuy.ca/28000-btu-du ... na-30hf-d/
- Zamboni
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Did you look at mini splits with pre charged lines Jerico? If you can get the required minimum 10' line runs to work, no loops, might save some cash/time. I know LG has pre-charged units but wouldn't be my choice, check reviews of Mitsubishi and Daikin.
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The single 12k units are about $700. The other issue with the cottage is just how far the lines would have to run to a single unit. It would be a lot if extra copper costkryton619 wrote: ↑ The pump and gauges together cost me $230.00.
The dual zones are less expensive than two single units. https://www.sogoodtobuy.ca/28000-btu-du ... na-30hf-d/
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My buddies uncle (old school Hvac) said even the pre-charged have oil in them and not vacuuming them could reduce compressor life.
- kryton619
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All mini splits are pre charged with the refrigerant stored in the outdoor unit and when everything is all hooked up you release it into the lines. All those types have to be vacuumed to remove moisture from inside the lines. The only units that I know of that you don't have to vacuum are Mr. Cool units. For some of their DIY mini splits the lines are actually pre-charged, so they were vacuumed and charged in the factory.
- Jerico
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For $230 that is totally worth it. Too bad that pump you linked is out of stock. I would prefer to not have to do both rooms at once at the cottage, and if I can vacuum myself I wont have too. The smaller 12k BTU units that run on 120v are more than enough for our purposes, and easier to wire as both rooms have a single dedicated plug we use for the portable AC units that I would wire into and make them dedicated lines. Its a chalet style cottage and on the 2nd floor, but its old and has been added onto so the indoor units ideal locations are 48 feet apart. It would be quite the PITA to run copper and communications wire from opposite ends back to a central unit. Plus in the one room quite honestly (my brothers room, screw him I want to swap the window for something better first.kryton619 wrote: ↑ All mini splits are pre charged with the refrigerant stored in the outdoor unit and when everything is all hooked up you release it into the lines. All those types have to be vacuumed to remove moisture from inside the lines. The only units that I know of that you don't have to vacuum are Mr. Cool units. For some of their DIY mini splits the lines are actually pre-charged, so they were vacuumed and charged in the factory.
How far can you run the coolant lines inside? I’ve never done it that isnt a direct connection to outside but I could solve some of the double unit thing.
- kryton619
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I think that all these things are made in the same Chinese factory. Just pick another one like this https://www.amazon.ca/Flexzion-Electric ... 41&sr=8-14Jerico wrote: ↑ For $230 that is totally worth it. Too bad that pump you linked is out of stock. I would prefer to not have to do both rooms at once at the cottage, and if I can vacuum myself I wont have too. The smaller 12k BTU units that run on 120v are more than enough for our purposes, and easier to wire as both rooms have a single dedicated plug we use for the portable AC units that I would wire into and make them dedicated lines. Its a chalet style cottage and on the 2nd floor, but its old and has been added onto so the indoor units ideal locations are 48 feet apart. It would be quite the PITA to run copper and communications wire from opposite ends back to a central unit. Plus in the one room quite honestly (my brothers room, screw him I want to swap the window for something better first.
How far can you run the coolant lines inside? I’ve never done it that isnt a direct connection to outside but I could solve some of the double unit thing.
I would never purchase something like this if it was my full time job, you would obviously want something that was going to last, but for doing a few mini splits, this will work perfectly fine.
The Senville units come charged with enough refrigerant for a 25 foot lineset. The power is connected to the outdoor unit, not the indoor, so the inside plug won't work. You also have to install a disconnect switch, to meet code requirements and that has to be installed beside the outdoor unit. I picked one up at the Home Hardware up north...but you can order from Amazon. https://www.amazon.ca/Siemens-WN2060U-N ... 162&sr=8-2
I installed the outdoor unit beneath a raised deck and put the disconnect up high away from the rain.
- Jerico
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I have a small deck to nowhere with a 4 foot overhand outside my bedroom facing the lake and I was going to place the outdoor unit right there. For my brothers room, I was also going to put the outdoor unit up high under the eaves so the plugs would be reversed to be outside and power the outdoor units.kryton619 wrote: ↑ I think that all these things are made in the same Chinese factory. Just pick another one like this https://www.amazon.ca/Flexzion-Electric ... 41&sr=8-14
I would never purchase something like this if it was my full time job, you would obviously want something that was going to last, but for doing a few mini splits, this will work perfectly fine.
The Senville units come charged with enough refrigerant for a 25 foot lineset. The power is connected to the outdoor unit, not the indoor, so the inside plug won't work. You also have to install a disconnect switch, to meet code requirements and that has to be installed beside the outdoor unit. I picked one up at the Home Hardware up north...but you can order from Amazon. https://www.amazon.ca/Siemens-WN2060U-N ... 162&sr=8-2
I installed the outdoor unit beneath a raised deck and put the disconnect up high away from the rain.
- Zamboni
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Yeah I mentioned pre-charged lines. LG also has some.kryton619 wrote: ↑ All mini splits are pre charged with the refrigerant stored in the outdoor unit and when everything is all hooked up you release it into the lines. All those types have to be vacuumed to remove moisture from inside the lines. The only units that I know of that you don't have to vacuum are Mr. Cool units. For some of their DIY mini splits the lines are actually pre-charged, so they were vacuumed and charged in the factory.
I guess buying equipment to install units could pay off with one install for a neighbours cottage.
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I recall you're also a woodworker Jerico....once you install the mini splits that vacuum pump might be strong enough for a glue up bag.
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There is a zero percent chance I could get an HVAC guy out at the cottage for under $250 to do this. Was $150 in Paris and this town is CHEAP.
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I would have gotten my money out of it doing my buddies and eventually mine. I swear all I saw were $500 pumps though. We paid $150 for his, i will need to do mine at the cottage which will be nearly impossible (all contractors up there are tied up with building huge cottages) plus I have a fancy ice maker up there that I could vacuum and recharge myself with gauges, a Vac, and then could borrow a bottle from my licensed buddy.
I’m glad we spoke @kryton619
- kryton619
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I watched this video prior to installing mine. You may want to make note of it and watch prior to installing your mini split.
- thesubmitter [OP]
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So is the payback obvious for these units vs baseboard?
- rainingdiscountedfire
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here is a study from the pacific northwest:thesubmitter wrote: ↑ So is the payback obvious for these units vs baseboard?
sfh savings of 3978kwh/year (say you pay ~$0.10/kwh, that equals a savings of $397.80/year)
the sample size was small for the study, but it at least gives you some numbers
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Probably a lot milder there than in even most of SW BC however. ~ 46N there vs 49N for almost all of BC.
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