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Fish Lives Matter

common problem in zoned system ( shutting off several degrees early or not starting @ set temp) , since single, I would look @ the offset

if it is fully communicating, it will log the errors,...

curious as to if this is zoned?

Reminds me many many years ago we were have a water feed issue that we suspected a restriction in the piping, drained the system more than once, opened piping nothing , finally found someone had...

3.5 will kill you, air flow in Man S more for a 2.5 ton, that being said, 2.5 Ton ramped up in speed or a 3 running @ minimum speed ---nice to see they used a blower door instead of guessing...

you are changing the indoor 70/75 is design , you can take 50 excess latent towards sensible----can you post the J and S

Start by using correct design conditions , otherwise toss Manj J and put in what you want

Pricing not allowed but that is an online price for just the unit

We do Aeroseal, we do not push it, it is there when we need it.............we will not seal unles we address duct sizing issues, as leaking ducts mask undersized ducts, as soon as you seal it static...

You also don't have a sediment trap, that valve is actually rated OK, but since you need a trap after that,it wont work and you need a gas cock....that is the pink elephant in this picture

Before doing that, how many returns do you have? If only 1, that is not enough for a 3.5 Ton , and I would consider adding a return to the Master ( if none there ) before doing anything with a supply...

Have them check the vanes and see if they are ready to spin....... and from what I can see they are probably quite dirty

Possibly the hub has spun or is beginning to ...guys will miss that

Is a large furnace......Oil canning type noise?

proper duct sizing

Balance Point is when gains = loss, never head of high and low balance point .......are you talking about using degree days to calculate your buildings balance ? typical Degree Day is from...

In a pinch , your HERS will allow you to take a snapshot of your digital gauges and send it to him to get the cert. And save a trip out

I see you are in CA,Mini's have to have HERS refrigerant charge verification which is why they probably lumped it that way , ours don't have a special category but our permits are half that amount
...

what is your CPH set @

yes , but the bigger question is is the grill size correct...what size is the Grill " free area" and what size is the unit .....anything over 3 Tons should have 2 returns

May want to consider hybrid , best of both worlds .

Variable Speed and 2 Stage are 2 different beasts unless you are speaking of the ECM motor ( air handler ) being Variable..............Fancier units and more expensive repair bills usually means a...

its energizing the reversing valve in the wrong mode

some energize in heat, some in cool, if you turn your ac on it will warm up

Agreed with pecmsg, however IF we have designed and installed the system we will use extended surface filters, then and only then

LoL

Yup, looks released to me

Here you go

Our Utility Company has a "Lending Library" with items a such, we have used it in a pinch if we have testing devices out for calibration etc, very helpful and free

Owners of HVAC Businesses or just owners of HVAC ?

Zoning is for Adequate Exposure Diversity...if = no then you will benefit from zoning

And Infinity gets the bad rap for being smart enough to recognize it's wrong

If you are having a issue, as said above, it is designed applied and installed wrong ........Period

Off Delays, over fired burens will cause that especially if the unit is oversized, zoned incorrectly etc

You will not have a 75 EADB unless the return is in a conditioned space ...I would look @ the man j first to make sure it is accurate....that being said, in simple terms, no 3 ton anything will do...

Building codes unfortunately, are for safety ....rarely performance . Even when performance design IS a code, ie Manual J/N , inspectors have no clue what is correct and not correct ...they are there...

we have put a handful of the new 26 in with no issues granted where I am defrost does not occur a lot....HP lock outs If In Heating Mode sounds like undersized ducting airflow issue, communications...

Put the Air back in Air Conditioning ....Delivered air = Delivered Capacity ....i think duct assessment knowledge should be a requirement for all techs ...its the pink elephant in to room and the...

Looks like HP Gas up to the regulator at the boiler anyway

I think Gravity is the operative and key word were

Pilot relay -Main 18 PSI +- Pilot is 3-15

It is a reversing relay ( changes controllers from direct to reverse acting based upon the season )

all the same load calc but System 1 and System 2 if two units or if one I break them out as Zone 1 and Zone 2 ---But All in the same Man J

for all intents and purposes, the typical scenario discussed here is for equipment performance and the static the equipment sees .....System balance is another..another reason I do not do Block LOads...

Conditions?

No worries, unfortunately where I am, the majority of Goodman Splits we see have a plugged internal drier that have been misdiagnosed summer to summer ...not a Goodman issue , but the hacks that sell...

Those are the ones we want out as you get misleading readings with them...checking downstream when they are even the slightest bit dirty will give untrained techs the perception if undercgarge

LoL

Anytime you open the system replace the drier- Next Question Please

It is certainly code to be separate and in conduit

It will learn, and anticipates based upon that...inputs from OSA and indoor and setpointand learns the approach, it knows how fast it’s getting there

anyone can do it, but it is also in the detailed instructions that should have come with the stat .....we have afee we charge online and I am sure others are the same...you can call 1800carrier