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New A/C System - Pay in Full or Finance?

Posted on 7/7/26 at 10:28 pm
Posted by TheMagicMan
Member since May 2026
119 posts
Posted on 7/7/26 at 10:28 pm
So yes it's that time of year. My A/C unit is leaking while running. This happened about 1 1/2 years ago, but luckily it was just the drain line at the time. The leak started again on July 2nd and has gotten worse. I attempted to use white vinegar as well as an A/C drain line cleaner, with no resolution to the issue.

Had my A/C guy who I have used for years come out. He cleaned out the drain line but advised it was already clean due to the maintenance I perform. He advised it's the evaporator coils that are causing the leak.

It's a 24 year old unit (great Carrier unit) so I know it's past time to go ahead and just get a new system installed.

He advised that Carrier is running some specials right now. I live in a 1,375 square foot townhome. The current Carrier unit is 3.5 tons which my A/C guy said is oversized for the unit. He advised I could cool my townhome comfortably on a 2.5 ton unit, however he would install a 3 ton unit to play it safe.

Quoted $9,500 for the new system, including installation, outside unit, inside heat pump and duct work. He is also including a UV light in the installation. My current unit is starting to have mold on the bottom part of the inside heat pump. He advises the UV light will help prevent any mold from developing on the new unit.

Is $9,500 for a Carrier 3 ton unit a good deal? More importantly, I have the money to pay for the new A/C system outright. Would it be better to pay off in full at installation or finance?
Posted by TheMagicMan
Member since May 2026
119 posts
Posted on 7/7/26 at 10:30 pm to
The main reason I'm asking is because my A/C guy is only a two man show. He owns his A/C company, it's not one of the big boys in the area who plaster their advertisements everywhere.

With that said, I'm shopping around. If I use my A/C guy, I have to pay in full, he doesn't offer any finance options. If I use one of the bigger companies, it's a higher cost but they offer financing.

I know some say to always pay in full/cash. Others say to keep that money invested as you will make more in investments that what you will pay in finance charges. Thoughts on an A/C system and whether to pay in full/cash or finance?
Posted by Strannix
C.S.A.
Member since Dec 2012
53994 posts
Posted on 7/7/26 at 10:31 pm to
Just paid 11.5 for a 4 ton American Standard unit for the west wing of my estate, was quoted 13K by my now former guy. Thats not a bad deal.
This post was edited on 7/8/26 at 4:37 am
Posted by billjamin
Houston
Member since Jun 2019
18739 posts
Posted on 7/7/26 at 10:34 pm to
Home improvement financing has some of the most asinine mark ups I’ve ever seen in my life. I had the same system quoted by 3 different shops and got prices ranging from 20k cash to over 50 financed.
Posted by armytiger96
Member since Sep 2007
2784 posts
Posted on 7/7/26 at 10:35 pm to
Pay in full and ask if he offers a discount for paying in cash.

quote:

I know some say to always pay in full/cash. Others say to keep that money invested as you will make more in investments that what you will pay in finance charges. Thoughts on an A/C system and whether to pay in full/cash or finance?


What are the terms of the financing? My guess is you're paying over 10% if so, see option A above.
This post was edited on 7/7/26 at 10:39 pm
Posted by PetroBabich
Donetsk Oblast
Member since Apr 2017
5153 posts
Posted on 7/7/26 at 10:37 pm to
No idea why you'd finance and presumably pay interest when you could pay in full and be done with it.
Posted by Spankum
The Sip
Member since Jan 2007
62820 posts
Posted on 7/7/26 at 10:39 pm to
What you are saying is kind of confusing….is it leaking water or is it leaking refrigerant?

If water, I would just find the leak and plug it. If it is leaking Freon, that is a different story.
Posted by diat150
Louisiana
Member since Jun 2005
48093 posts
Posted on 7/7/26 at 10:44 pm to
He is fricking you that uv light won’t do shite. Also I would question why he wants to sell you a 3 ton if 2.5 is the right size.
Posted by Porter Osborne Jr
Member since Sep 2012
44014 posts
Posted on 7/7/26 at 10:44 pm to
That’s a pretty good deal from what I’ve seen lately
Posted by TheMagicMan
Member since May 2026
119 posts
Posted on 7/7/26 at 10:50 pm to
quote:

What you are saying is kind of confusing….is it leaking water or is it leaking refrigerant?

If water, I would just find the leak and plug it. If it is leaking Freon, that is a different story.


Based on what we saw, the evaporator coils are blocked/clogged. My A/C guy said it's to the point it would be very difficult to clean and get off. My A/C guy was also concerned due to the mold starting to form on the lower part of the inside unit/heat pump.

He said if the mold spreads, especially to a lot of the inside unit, I could be looking at a costlier replacement later, as more ductwork may need to be replaced, which would involve tearing away drywall. Obviously that is not something I want.
Posted by TheMagicMan
Member since May 2026
119 posts
Posted on 7/7/26 at 10:56 pm to
quote:

He is fricking you that uv light won’t do shite. Also I would question why he wants to sell you a 3 ton if 2.5 is the right size.


The current unit is 3.5 tons for comparison purposes, so it seems risky to go from 3.5 tons to 2.5 tons.

As the townhome is around 1,400 square feet, it's right in the middle. 2.5 tons are typically best for 1,100 - 1,500 square feet, while 3 tons are typically best for 1,500-2,000 square feet.

He technically offered me both a 2.5 ton or a 3 ton Carrier unit. He advised me the 2.5 ton would run far more often than what I'm used to with my current unit. Plus I'm in Florida, a very humid environment like Louisiana. So that makes me wonder if that would tip it over to favoring a 3 ton over a 2.5 ton unit even though 2.5 ton fits my square footage.
Posted by BamaCoaster
God's Gulf
Member since Apr 2016
7279 posts
Posted on 7/7/26 at 10:59 pm to
I own an hvac company.
You’re getting a solid deal, and had a good run with a 24 yr old unit.
Pull the trigger, as financing hvac systems pays a high interest.
Posted by TheMagicMan
Member since May 2026
119 posts
Posted on 7/7/26 at 11:04 pm to
quote:


I own an hvac company.
You’re getting a solid deal, and had a good run with a 24 yr old unit.
Pull the trigger, as financing hvac systems pays a high interest.


Thank you, I'm still getting quotes but I imagine I'm not going to get a better deal. Especially from the bigger HVAC companies with all the fancy marketing.

What do you think about 2.5 ton or 3 ton? I was offered both. I think my A/C guy would prefer the 2.5 ton unit, but the current unit is 3.5 tons so I think he's concerned I'm going to complain about it being on a lot more.

For right below 1,400 square feet, in a 2 story, 3 bedroom, 2 bathroom townhome, what do you think you would recommend?
Posted by XxxSpooky1
A place in SE La
Member since Sep 2007
5165 posts
Posted on 7/7/26 at 11:10 pm to
Such bullshite. Pull the coils, clean them, put them back in.
Posted by NewIberiaHaircut
Lafayette
Member since May 2013
12507 posts
Posted on 7/7/26 at 11:12 pm to
Sounds like a good deal. Pay cash.
Posted by Allister Fiend
Member since Jan 2016
1102 posts
Posted on 7/7/26 at 11:18 pm to
Had to replace mine in April. 4 ton unit, basically a carrier. Paid $5000 cash at the supply house for the outside unit, air handler, and heat strips. Paid an a/c company $2000 for install. While I didnt want to spend the money I figure $7k wasn’t nearly as bad as it could have been.
Posted by sharkfhin
Water
Member since Sep 2008
6662 posts
Posted on 7/7/26 at 11:25 pm to
How long is your warranty on this set up?

If you have a 3.5 ton, why not get a 3.5?

Posted by Geaux-2-L-O-Miss
Between Your Ears
Member since Aug 2005
3926 posts
Posted on 7/7/26 at 11:30 pm to
I'm going thru this right now. The unit that needs replacing is a 2-ton package unit on the flat roof (2nd story). He offered me 0% for 5 years or a 5% discount for cash. Being on the roof on the back of the house they need a crane and the cost is 18k. FML
Posted by Spankum
The Sip
Member since Jan 2007
62820 posts
Posted on 7/7/26 at 11:40 pm to
Hope you don’t take this the wrong way….but this sounds like he is shooting you a line of BS in hopes that he can sell you a new unit.
Posted by DoUrden
UnderDark
Member since Oct 2011
26298 posts
Posted on 7/8/26 at 1:36 am to
If you can pay in full, why would anyone pay interest?
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