undefined | Better HN

0 pointsorwin6mo ago0 comments

Can you do the installation yourself? In my country i have to make a HVAC technician come to check the installation and sign a paper before i can start mine (200€ for a 15 minutes job, but it's less than the 2-4k it would cost to not do it myself)

[edit] i say that because my hardware is 2.5k euros, so ~3k¯dollars, so we probably have the same high end stuff, and i guarantee you it's not hard to install, and it can be quite fast if you have help from your SO.

0 comments

mothballed6mo ago

Depends on where you live. Someone that has the tools can do it themselves and then shut the fuck up, which is how I suspect most of them in America get installed. Code/planning enforcement commonly surveils residences via satellite or air images but they're not noticing a mini split installed.

jabart6mo ago

Newer units (not all) in the US come pre-charged up to a certain size of lineset. Manufacturers can sell you a whole unit with a charge. The rest is easy to source locally though I haven't tried to get nitrogen myself.

Of course you have exactly one chance with your install this way until you have to call someone.

mothballed6mo ago

nitrogen is available at any welding supply store. The container and pressure regulator is like $200 though.

steveBK1236mo ago

Central air system with indoor blower & outdoor condenser generally don't come with pre-charged lines so self-install without certification isn't really an option in US.

mothballed6mo ago

I got my EPA 608 universal for free after 2 night of cramming and an online proctored test. Skillcat, I think they charge like $50 if you want a printed card, worth it to me because I wanted to be able to walk into supply houses and buy refrigerant.

josiahpeters6mo ago

I almost did this after I helped a friend install a mini-split.

Having just installed a mini-split in my office shed with a pre/charged unit. I told him it was easy and helped him. We ended up needing to buy an extra long line set to make the distance work, which needed more refrigerant.

I called 15 different places and finally found one that could come out and charge the line for under $350. Which was hard to stomach with the whole unit costing only $750 from Amazon.

theoreticalmal6mo ago

I always wondered how difficult it was to do this. I’m really glad to know it’s possible

1 more reply

brianwawok6mo ago

Me too, except I got it in the SkillCat free trial. Did it while rocking my then baby over a few weeks. Super easy for anyone that is a “good” test taker and has high school level reading

bradgranath6mo ago

It's not just certification/permitting. The manufacturers often state that the unit must be verified to be installed by a qualified technian or the warranty is void.

Around here anyway, I was getting quotes of 20k for the install & equipment of a central air handler and the outdoor unit.

I'd be dead before the thing paid for itself in electricity cost savings. $20,000 ÷ (~90yrslife - 40yrsold) = $400 / year of neccesary savings to break-even as my casket is lowered into the ground.

JeremyPOsborne6mo ago

Most don't have a payback if the cost of electricity is too high. Let's make them lower cost up front and lower running costs so it's a no brainer when replacement is due.

carlosjobim6mo ago

Or else?

j / k navigate · click thread line to collapse

0 comments

mothballed6mo ago

jabart6mo ago

Of course you have exactly one chance with your install this way until you have to call someone.

mothballed6mo ago

nitrogen is available at any welding supply store. The container and pressure regulator is like $200 though.

steveBK1236mo ago

Central air system with indoor blower & outdoor condenser generally don't come with pre-charged lines so self-install without certification isn't really an option in US.

mothballed6mo ago

josiahpeters6mo ago

I almost did this after I helped a friend install a mini-split.

I called 15 different places and finally found one that could come out and charge the line for under $350. Which was hard to stomach with the whole unit costing only $750 from Amazon.

theoreticalmal6mo ago

I always wondered how difficult it was to do this. I’m really glad to know it’s possible

1 more reply

brianwawok6mo ago

Me too, except I got it in the SkillCat free trial. Did it while rocking my then baby over a few weeks. Super easy for anyone that is a “good” test taker and has high school level reading

bradgranath6mo ago

It's not just certification/permitting. The manufacturers often state that the unit must be verified to be installed by a qualified technian or the warranty is void.

Around here anyway, I was getting quotes of 20k for the install & equipment of a central air handler and the outdoor unit.

I'd be dead before the thing paid for itself in electricity cost savings. $20,000 ÷ (~90yrslife - 40yrsold) = $400 / year of neccesary savings to break-even as my casket is lowered into the ground.

JeremyPOsborne6mo ago

Most don't have a payback if the cost of electricity is too high. Let's make them lower cost up front and lower running costs so it's a no brainer when replacement is due.

carlosjobim6mo ago

Or else?

j / k navigate · click thread line to collapse