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Legal disclaimer..... any and all things I say here can be dangerous.
Firstly, your compressor doesn't care what type of refrigerant it pumps. It cares about pressures, volume, and compression...

Sounds like the service guy didn't know you pretty much need to use 45% silver braze for an evaporator.
Usually the plating extends all the way to the stubs so silfoss doesn't easily bond

3 tons seems seriously over sized to me. Ton and a half is big for that space but it will be much more comfortable

Not exactly sure on the algorithm on those as I don't install them.
But I'm betting that it reads motor cfm and amps draw and adds that into the equation.
I know ot goes against the wisdom of...

Pouring out heat and air much more than before means the furnace isn't matched to the ducts.
The ecm motor overcomes the undersized ductwork.
I'm willing to bet your static pressure is too...

There are a few ways to size to the load. You could do a room by room load calculation.
Or pull out your utility bill for the coldest month and calculate your therms from there.
I prefer...

The American standard is a trane product and is one of my favorite products.
Lots to like and nothing to dislike about them.
As stated above. Best bang for the buck is to go hybrid system. ...

From the video it's impossible to tell if it's the hammering of a compressor slugging liquid.
I have a hard time believing that your automotive ac system would work fine but be slugging liquid...

I made the switch to digital wifi probes a couple years back.
As a refrigeration guy.... it's the best thing ever. And that's because all the different gases are already in the app.
I don't...

I had one Baldor 3hp fail on a 2 year old allied rtu. It was running on a vfd. Phase to phase short.

Frankly you should set up the fan to blow INTO the garage and have a natural draft exhaust with the natural draft water tank.
However, just having air at 70 degrees entering won't that much. ...

I seem to recall those old ones ran 140 weight oil.
For food grade I'd go see your local lubriplate distributor. The oil still won't be cheap, but it will be reasonable

It likely was the transformer... hard to say though.
This is why I perform what I tell customers is a highly technical " tap " test on intermittent faults.
I literally tap on every single...

The liebert units are in fact built for 24/7 duty cycles. And they will generally run decades at that.
Really for household ac.... I'm pretty sure the design criteria is 50% duty cycle and they...

I built a few data centers back when I was working for an internet service provider..... this was a small company that started from nothing back around 2000.
In other words, the company didn't...

Furnace is too big for ducts/space.
Om guessing old unit was 100k 80% unit. That gave you 80000 btu heat output.
Your new furnace gives you 96000 btu output.
You have effectively installed...

Short answer is that as temperature drops so does pressure.
That means that a colder evaporator has more suction against the cap tube.

I don't see any glue on those drain fittings.... likely leaking at joints

The American standard uses a spine fin coil. This style of coil tends to run very well even when plugged up with dirt.
The other units all use a tube/fin style coil and those are perfectly good....

I really like concentrics.

215kwh x 3.41 ÷ 24 = 30547 btu per hour. Now you likely have other small draws on your electricity, however unless it's something running outside the home, all of those draws are adding 100%...

Not illegal to repair a system. However, may not be cost effective to repair.

If it's brazed properly the connection will be much stronger than the pipe itself. So really a non issue.

Bedroom struggling with temperature is the first indication of an oversized system. I see you are dropping around 15000 btu output.
But I'd be doing a proper load calculation, and that's...

Usually replacing that hose isn't really a big deal. Empty the inside of the unit, ( that's usually the hard part) then unscrew the thumb screws on the evaporator cover panel, remove the panel, pop...

3204 kw for the month of January works out to roughly 15000 btu per hour......
Now that's an average. So you obviously have colder and warmer days. Now the real question is... how well did the...

A half ton oversized ( which is really what we are talking about here) isn't really what I consider oversized.
What I commonly refer to as oversized is usually DOUBLE capacity.
In all of...

Sounds like an internal bypass issue. Shouldn't be bypassing with that low head pressure.
If the lower portion of the can is getting hot then it's definitely a bypass issue.
I had a half...

This is why I miss the little draft windows that all vehicles used to have

Where I'm at a single pipe system won't pass inspection. Go with the 2 pipe. Yes you may lose an infinitesimal amount of burner efficiency.
But... that's more than made up by not sucking cold...

Get the transit connect. Everyone I know that bought a nv200 now has the Ford.....

Keep a Rottweiler in the truck.....

The installation manual will have all required information

Up here I run my heat pumps to around 5 degrees before switching over.
Once you get your system installed you can figure out where the heat pump can no longer keep up. And you can set it to that...

You can typically set up staging on the furnace for use with a single stage thermostat.
That's what I did in my own home this summer when I installed furnace and air conditioner.
All I had...

I was on-site on Friday. The drain is effectively double trapped.
Unfortunately I didn't have time to redo drain on my initial vist.
No room to work and pvc drain glued in with a reverse...

It's a freezer.... shouldn't be worried about trapping moisture.

T6 pro with outdoor sensor is about the cheapest.
Ecobee 3 is a good stat too

There are many things on this vintage lennox unit that cause the interruption of cycle.
The last one I had was a board. The relay on the board for the inducer had worn out contacts and would drop...

Cut the hole higher in the wall, paint the old vent, install it and add trim to the bottom

Frankly if you have to pay for the repair..... I wouldn't do it.

I generally don't charge for a quick look. Once diagnostic is complete then we can discuss repairs

If you need a second opinion I'm in winnipeg.

I'll say it's just a different packaging. Mini splits really came out of aisia where space is at a premium. So horizontal discharge takes up less square footage.
I do however work on some old...

It does... but now I'm wondering what I'm missing?

Living in a place that's below freezing 6 months of the year I can tell you a frosted coil is not a problem. ( as long as the unit is still delivering heat)
If the coil is frosting to the point...

Living in a place that's below freezing 6 months of the year I can tell you a frosted coil is not a problem. ( as long as the unit is still delivering heat)
If the coil is frosting to the point...

That could be the unit in defrost mode depending on model.

Would either be intake or furnace exhaust. And the water coming from the connection leads me to believe it's exhaust.
That connection needs to be properly glued as if it's leaking water..... it's...

Cascade system