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I emailed them 15 min ago and got a response. Yes it will work;


The following SureStart model is recommended:
Model ASZC160481 with an RLA of 20.4 A - SS1B16-32SN (230V, 60/50Hz, 16-32...

I have used several of those, they work great. IMO the tech is not up to par. If Microair is compatible then this one should be also. The Hard start won’t do any good, you’ll definitely need the soft...

Sure it will, done several, works fine.

Exactly and if I am not wrong it’s the only replacement that many compressors, txv’s label as ok. My experience has been the same, 4oz Supco88 which is dirt cheap.

C. I am a one man company and bought a bunch of 22 back when it was dirt cheap so fortunately still have several tanks and offer my loyal customers a really good price for it. It’s still my favorite.

I can’t even count the number of units, most over 10yrs now that I used 407c in. I prefer adding 4oz supco88 but the high velocity of the refrigerant seems to be enough. I did over a hundred on one...

I like 407c, they say add a little poe oil but I have done several, some with 4oz supco88 and some with nothing. All are doing great. Out of those two mentioned mo99 is the only one that I am...

As said disable the strips with a switch, here in my area in Texas mine has be on a switch for yrs. You will have cold air during defrost unless at least some of them are left on to temper the air in...

I love ecobee, have one in my own home.

Personally I love ecobee, maybe they have some 3stage stats now but the ones I am familiar with only support 2 stages of cooling or heating. I have for some who didn’t want to lose their ecobee, tied...

If I didn’t know that this was for real, I would think it was just a joke. You should not even think about letting these guys do anything else. I would just have it all removed, get a refund, if...

I have also seen nest do this, just had one recently. Guy had another new one so I switched, problem solved.

I have had a heatpump in this home for 12yrs and even though here in Texas it doesn’t get real cold, it does get into the 30’s and has dropped into the upper 20’s. Rarely does my backup come on and...

Personally I have installed several ecobee thermostats and never have issues, actually have one in my own home for many yrs now. I am going to say that something is going on with the system. It could...

As said get static pressures, shouldn’t cost much and often they’ll waive that cost if they get the job. If that checks out well I feel that with a good company you’ll be fine.

Not many like Nest but here I’ll bet it was bad connections and not stat related

Very interesting

I agree, although not everyone’s cup of tea, I like spiral duct.

If it’s 75* outside he should be able to check refrigerant level and other measurements accurately without the expense of pulling it out to check. A good or even decent tech should be able to do that.

I see that a lot here. If they aren’t happy with that they won’t be happy with line hide either. Mr Bill made a good point, what’s wrong with the original lineset? If it’s not too small, pressure...

They are right, it does require a 9” supply. The TESP should be 1”-1.5”, higher would be the indicator of too small of supply and possibly return duct.

You said it wasn’t water so this isn’t your situation but once yrs ago I had a breaker trip. Horizontal attic unit on 2 story, water got into the wire sheathing, traveled all the way down to the...

Texas A&M did testing, flex with max stretch fall within + or - 2% of rigid. Not stretched it has huge losses. There is an article on it.

I have recently installed two, the last on a 3.5 ton Rheem. I can’t remember the before inrush amps but after the soft start the first start was 24amps, 2nd start was 17amps, and not sure but after a...

I have to ask, what’s your neighbor think about all this?

I would my own but agree with you.

That would give about a 50% reduction but 407c with airflow adjustments would get close to that as well assuming there is room for the adjustments. Would it be hard to find a 134 txv?

I know what PHM would do, 407c from 410a gives 65% of rated capacity or makes it close to a 3 ton. Of course with txv and airflow changes. Adjusting airflow to get saturated temp down closer to 35*...

I agree, I guess it’s a try and see?

Ok I found this, may or may not help but thought that I would post it.

I'm using a Hyper Engineering soft starter on a Goodman 2 stage condenser. It’s the same type of Copeland Scroll with the...

I thought I read somewhere that with 2stage it would require one for each stage?

Either that or it’s a foamed attic?

Since you like that contractor why not just get all new from him instead of the older condenser? May cost a tad more but just makes sense to me.

Who would pay to have it moved? It likely wouldn’t be cheap?

Here is your answer. If it’s not inverter a hard start is less expensive by far but recently I did a soft start and it’s working great.

If that’s your feeling then you might as well call another reputable co and get their opinion, may be money better spent?

I hope this is within the rules here, but what is the supply air closet to the inside unit and the return air at the filter? That will offer some of the needed info and easy to do.

My only concern would be the 1 yr warranty, the equipment usually has a 10 yr warranty if registered.

If it has been cooling ok for a yr it is likely r22 or a replacement. You would have complained way before now with 134a

I can say that if that is how it was checked then who ever is working on it shouldn’t be. Find a new tech. That does not confirm with certainty that it is the compressor, although it is a...

As said the unit will have the size of breaker labeled but also the wire size has to be considered. My guess is that there are unsolved issues. I wonder if the original compressor was even checked...

Get more than one bid. Nothing is cheap anymore and Unico although a good product imo are very expensive. They as well as others have gone up in prices. Sorry about the repeat, not sure what happened...

Get more than one bid. Nothing is cheap anymore and Unico although a good product imo are very expensive.

I have not seen them on residential, only commercial. I could see them on straight a/c but can’t vision how they would work on heatpumps? Just a question, would that be correct?

Pistons work fine when installed correctly and with correct one but with all this I would just get a txv, adj airflow, refrigerant, etc and be done with it.

Can I pick your brain a bit, my math is in decline, lol. Is this how you came up with that number?


381psi or 112.8 saturation
19.1SC
112.8-19.1=93.7* saturation (291psi) when SC is used up....

As said need to be on site to diagnose properly but will say that those condensers are critical on charge and subcooling doesn’t mean much on pistons, you would need the superheat. Another thing,...

From what I remember for cooling it’s 200-250 cfm/ton and heatpump is 225-275 cfm/ton. The 2” outlets at a minimum should have 20 cfm each or more commonly 35 cfm each which offers an acceptable...

I have a Unico in my own home and did as PHM did, installed a charge compensator, works great imo. The efficiency does not take into account the very little duct losses, humidity removal, etc so to...

Have you tried setting it to 76 and see if it cycles since you said it was cold. At 95 outside and sized properly will probably run a bit. You likely have low inside humidity which will make it feel...