Any Issues: Old Condenser - New System? - HVAC - DIY Chatroom Home Improvement Forum

Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > HVAC


Thread Tools Display Modes
Old 07-05-2012, 11:43 AM   #1
Cruising into the sunset
JulieMor's Avatar
Join Date: Apr 2012
Location: Punta Gorda, FL
Posts: 612
Rewards Points: 520

Any Issues: Old Condenser - New System?

I had the furnace replaced last fall. That and the coil were both 26 years old. I told the guys to disconnect the lineset and remove the coil and that when I got the money I would install a new coil, lineset and condenser. The condenser is being relocated to the side of the house.

I've priced out a new condenser and for now it will have to wait. I have a cased coil on order that I'm going to install. I'll also run the lineset out to the new location. From that point, everything will be new.

I was thinking I would move the existing condenser (it's about 15 years old) to the side of the house and have a guy do the connections, evacuate and recharge the system. Are there any issues I should be aware of keeping the old condenser?

The furnace and coil are matched as per Carrier specs. It's a 3-1/2 ton coil. The existing condenser is 3 ton. I'm not sure about the refrigerant for the condenser but the coil is set up for R410A. I know the old system was freon.

Is this doable? Would I need to change out the TXV valve for R-22? Is it worth it or should I find some way to afford a new condenser?


JulieMor is offline   Reply With Quote
Old 07-05-2012, 03:36 PM   #2
I'm Your Huckleberry
Join Date: Mar 2011
Posts: 5,884
Rewards Points: 2,270

You will need an R-22 specific txv or piston to make the coil compatible to the old R-22 condenser. It is not a good idea to go this route. Best would be to get the new 410-A condenser now as well. You will be paying three times as much overall recovering the "new" R-22 of which you will be charged for the refrigerant at time of new evaporator install, lineset flush to prep for the new 410-A of the new condenser, having to buy a new 410-A txv to install in the coil to convert it back along with the condenser on a later date.

That plus the partly new system will only be as efficient as the condenser so you've just paid a bunch of money to remain stagnant.

Might be best to ask before you make decisions.


Doc Holliday is offline   Reply With Quote
Old 07-05-2012, 05:21 PM   #3
Join Date: Oct 2009
Location: Nebraska
Posts: 2,362
Rewards Points: 1,000

I agree with DOC 100%. Save up and replace it all at the same time. A coil by itself will probably have a 1 year warranty while a whole system will have a 10 year warranty. Since the coils are the weak link you want it covered as long as possible.
Marty S. is offline   Reply With Quote
Old 07-05-2012, 07:57 PM   #4
HVAC Contractor
Join Date: Jun 2012
Location: Augusta, GA
Posts: 412
Rewards Points: 336

I agree with Doc - do yourself a favor and move on up to R410A. I know it's pricey, but if you can't do it right, then you should just consider waiting until you have the money to do things right.

You won't be able to reuse the coil with R410A when you have to upgrade that condenser. Yes, you can change the TXV back to 410A, but you will be very hard pressed to get all the old mineral oil out of that coil, and it doesn't take much at all to lock down that new 410A system. I've had the local Rheem/Ruud tech guys say that they won't warranty system if they find that the coil was not changed out when a new 410A condenser was installed. I can't verify that, but I sure wouldn't take the chance.
scottmcd9999 is offline   Reply With Quote

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
Upgrade old Rheem Split System fredm54 HVAC 7 05-15-2012 02:04 PM
Installing Pool System New v. Used? flowerchick General DIY Discussions 5 10-27-2011 07:28 AM
New House, new system, poor cooling Faulknertw HVAC 15 07-08-2008 10:06 PM
Is 1/2 Pex more restrictive than 1/2 copper? twilightcall Plumbing 19 06-24-2008 07:32 AM
Size A/C system properly 70stang HVAC 1 03-26-2006 07:22 PM

Top of Page | View New Posts


Search Engine Friendly URLs by vBSEO 3.6.1