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Run the new compressor model number and Make sure you have the proper run cap for it

My suggestion to you would be this.

1) Has Routine service ever been done on this unit?

2) If the combustion air inlet pipe and or the exhaust vent pipe are accessible to you then I would look...

Is the condensate draining properly from the secondary, Had one just recently that was a slow drainer and kinda mimics this situation

Brand and Model number of Humidifier

Being a Contractor myself you've got a pretty good head start and you are doing fine.

Being a Husband who also had a pregnant wife and no a.c a number of years ago, I also know of what you speak....

Your outdoor a/c condenser is not functioning properly. Please remove the power to the outdoor unit for safety reasons and call a local contractor who should be able to diagnose and repair this...

I always use this when I solder, Haven't had an issue using this with 410 for many years.

http://www.harrisproductsgroup.com/~/media/Images/Products/Alloys/Soldering/sclf16.jpg?bc=ffffff&mw=150

Are they running the furnace for heat currently?

Is it a 2 pipe system or single pipe?

Existing Water heaters don't have to meet the New Requirements

Manufacturers will be able to sell off existing stock of water heaters made before the changeover date.

Another issue to take into consideration which may or may not apply to you would be that come april the Federal Govt is requiring water heater manufacturers to improve the efficiency of their waters...

i had one, It was a sat morning no heat call a few years ago.

When there I opened bottom door of a carrier up flow in the basement to see why there was no low voltage and I came face to face with...

Is the pressure relief valve changed also in this setup?. Boilers set fixed at 30# Water heaters 125#

Just Curious

let me untie that bow for you and retie it this way.

On replacement secondary heat exchanger carrier offers a free replacement and a labor stipend to the company who does the replacement. Some...

I do service on all makes and have been doing it, since, well for a long time lets just say.

Sounds like you have 2 probable causes for the CO issue.

1) Recirculation of flue gases. caused by...

a simple flush?

was it a burnout?

What City and State do you live in?

Preventing sewer gas migration into the plenum

My questions are:

Is this new cycling behavior normal? (On for 20, off for 10, on for 20?)

Probably...... in an apartment what is the insulation and window like are they efficient?



How...

"It's Just amazing how many wires go to that switch"

:pop:

I can leak check a system from the outside after installing a new condenser by evacuating an entire system and seeing if it holds the proper vacuum.

That being said I don't think I ever jumped...

Aprilaire says not the best spot.......but yes you can

Should my Aprilaire power humidifier be installed on the supply plenum or the return air duct?

Aprilaire power humidifiers are design to...

Research Products (aprilaire) offered a product for a minute

Was a water panel for condensing units. Worked like a bypass humidifier

metered the water flow down the panel, precooled the...

Sizing is key, How you accomplish it can be an issue.

There are many Manual J computer programs that will let you input
all of the numbers into them and you could do it yourself.

As far as...

We also handle the warranty paperwork for the customer. We present confirmation of 10 year warranty on a follow up visit usually about a week later.

Bully

Anyone here could have found you an aftermarket replacement Evap coil for your leaking 2.5 ton Heil coil If they so desired.

Remember these things........You get what you pay for.

Will...

if it is leaking oil, then it is also leaking refrigerant

contactor/and capacitor replacement are usually easy thing to replace depending on the hvac service company and what they charge I agree...

If a contractor had to recharge your a/c system and didn't find a leak. The refrigerant he put in will leak out again putting you in the same situation.

if the refrigerant leaked out a significant amount in that short of time, finding a leak should be child's play. recover the existing refrigerant and pump up the system with nitrogen and listen for...

Wait.....I Know.....

It's a York.

Does all your duct work run in conditioned space?

Is your duct work insulated properly?

Is any of it leaking?

How old is your a/c system?

How far away from the Evap coil is the register...

They are seasonal returns and usually only the bottom one can be opened or closed.

The bottom one gets open in the winter and in doing that effectively closes off the top
return.

In the summer...

Texas Guys will be along soon enough They are probably out working still as we speak.

Correct me if I am wrong but Not only heat but humidity is an issue in Houston.

You also have some issues...

Pretty common Honeywell Gas Valve

Honeywell or any reputable supply house should be able to help you
if you are actually a contractor

Call an attorney or legal aid society

File a complaint with the local police dept so they have it on record at the very least

We install a llfd on every install

We have been doing this for 40 years......since I have been around.....everyone

That being said we do that to help us and also help the system

But years...

what parts are you looking for?

that being said if the txv and the coil both are failing then they both would be in warranty

Just did one myself actually

Not Necessarily, as far as txv installed onto the coil

The coil may or may not come with a txv If it comes with a piston, carrier has a txv that can screw right...

Model number of the furnace might help

I have seen physical obstacles preventing a blower being removed( a wall or door, a water heater etc) but never had to remove a heat exchanger to pull the...

The spec guide says yes

http://www.americancoolingandheating.com/wp-content/uploads/carrier-product-data-specifications/CA13NA-03PD.pdf

http://www.lennoxpartsplus.com/Locate/store-list.asp

Maybe some of these Maryland stores are near you

Lennox PartsPlus - Baltimore
Lennox PartsPlus - Beltsville
Lennox PartsPlus - Frederick...

Been in the business almost 40 years

I was walking thru the yard of a big home in a well to do neighborhood in NE Ohio
when I stepped on a wrought iron guard that covered a 7 foot deep window...

Okay, where's the hidden camera?

I share your frustration but really any honest, ethical contractor
wouldn't touch this one for any reason.

Sounds like you are on the right path talking to an owner or the Boss in the company.

If you don't think it is right, have your concerns addressed before work resumes or is completed.

Page 20 gives the breakdown of the model numbers you are looking at


http://www.surplus-used-equipment.com/media/44730/rtprc010en.pdf

X's 2 to what snupytch said

Adjusting the gas pressure isn't the answer.

Has the boiler been properly evaluated by a hydronic heating contractor to see why it isn't
working properly?

These guys are right on the money

The furnace was manufactured in the 50th week of 1979

Went in sometime in 1980 or maybe 1981 would be a best guess

Different Magic with Heat than with A/C.

Seriously this isn't a DIY website and we can't help you for fear of you doing something
that may harm you or others in your household.

A professional...

Any contractor worth his salt wouldn't take on this project and be able to sleep at night. The liability on a project like this alone should scare off you and anyone wanting to attempt it.

You...