- My Forums
- Tiger Rant
- LSU Recruiting
- SEC Rant
- Saints Talk
- Pelicans Talk
- More Sports Board
- Fantasy Sports
- Golf Board
- Soccer Board
- O-T Lounge
- Tech Board
- Home/Garden Board
- Outdoor Board
- Health/Fitness Board
- Movie/TV Board
- Book Board
- Music Board
- Political Talk
- Money Talk
- Fark Board
- Gaming Board
- Travel Board
- Food/Drink Board
- Ticket Exchange
- TD Help Board
Customize My Forums- View All Forums
- Show Left Links
- Topic Sort Options
- Trending Topics
- Recent Topics
- Active Topics
Started By
Message
AC pros. 1800 sq ft. 4 ton unit?
Posted on 4/17/18 at 6:17 am
Posted on 4/17/18 at 6:17 am
Just got quoted for a four ton unit on my house. It's 1800 sqft. They said I need a 4 ton. I have a 3 ton unit now it's just 23 years old and leaks everywhere.
4 ton seems oversized to me. What do y'all think? I don't want my house to stay so damn cold it never dries out.
Thanks
4 ton seems oversized to me. What do y'all think? I don't want my house to stay so damn cold it never dries out.
Thanks
21
Posted on 4/17/18 at 6:18 am to thejudge
3.5 ton would probably work but 4 is not out of the question...depends on the house really
This post was edited on 4/17/18 at 6:19 am
Posted on 4/17/18 at 6:22 am to thejudge
4 ton is too large, imo.
600 SF = 1 ton
600 SF = 1 ton
Posted on 4/17/18 at 6:23 am to thejudge
Any bigger and it would not run long enough to pull the humidity out of your house.
And you will probably save the cost of a nice pizza a month off your electric bill with the improved efficiency.
If your house is well insulated and shaded, you may want to back down 1/2 a ton.
And you will probably save the cost of a nice pizza a month off your electric bill with the improved efficiency.
If your house is well insulated and shaded, you may want to back down 1/2 a ton.
This post was edited on 4/17/18 at 6:25 am
Posted on 4/17/18 at 6:23 am to East Coast Band
Just get a couple window units. You'll be fine.
Posted on 4/17/18 at 6:25 am to thejudge
If the home is not well insulated 4 tons, otherwise 3.5, my home is older and I went from 3 to 4 and glad I did
This post was edited on 4/17/18 at 6:27 am
Posted on 4/17/18 at 6:28 am to thejudge
I did this and now it creates massive suction. They say i need larger ductwork. Fml.
Posted on 4/17/18 at 6:31 am to thejudge
500-600 sqft per ton is a rough estimate. Lot of values need to be considered. Ceiling height and amount of windows are the first 2.
So a 3.5 ton or a 4 ton would be a good estimate but not set in stone. You really need to calculate the CFM’s needed per room to get it on the money.
It’s better to under size than over size cause like another poster said your unit will not run long enough to pull out the humidity.
So a 3.5 ton or a 4 ton would be a good estimate but not set in stone. You really need to calculate the CFM’s needed per room to get it on the money.
It’s better to under size than over size cause like another poster said your unit will not run long enough to pull out the humidity.
Posted on 4/17/18 at 6:34 am to thejudge
How tall are your ceilings?
How well insulated is it?
How well insulated is it?
Posted on 4/17/18 at 6:34 am to thejudge
My house is 1800 sq ft and had replaced a 3 ton unit last year with another 3 ton unit. I had three different quotes, and they all recommended a 3 ton unit and said 3.5 would be ok, but would not go any larger.
it is a single story ranch style house so I guess a two story house could mean having a 4 ton
it is a single story ranch style house so I guess a two story house could mean having a 4 ton
Posted on 4/17/18 at 6:41 am to thejudge
If your 3 ton worked well you can go back to a 3 ton. You might want to confirm the 1800 sf is correct.
The newer units are much more efficient so going larger isn’t necessarily the answer but 600sf is a good rule of thumb.
The newer units are much more efficient so going larger isn’t necessarily the answer but 600sf is a good rule of thumb.
Posted on 4/17/18 at 6:42 am to thejudge
quote:
Just got quoted for a four ton unit on my house. It's 1800 sqft. They said I need a 4 ton. I have a 3 ton unit now it's just 23 years old and leaks everywhere.
4 ton seems oversized to me. What do y'all think? I don't want my house to stay so damn cold it never dries out.
Thanks
I had a 4 ton on my just over 1800 sq ft home, and with the number of windows I have facing the west and the vaulted ceiling in the living room, the temp never would get below like 78 running all day long. I ended up adding an additional return, a few more drops, and moving to a 5 ton. Now the unit can go off during the middle of the day in the summer.
This post was edited on 4/17/18 at 6:43 am
Posted on 4/17/18 at 7:14 am to thejudge
Is it a two stage? They run at reduced power a lot to keep humidity down without using much energy. They only go full power when it is redic hot. That could affect the tonnage they recommend.
We replaced an old 3.5 with a 2-stage 4 a few years ago, and it has worked well. I also had my reservations in the beginning.
We replaced an old 3.5 with a 2-stage 4 a few years ago, and it has worked well. I also had my reservations in the beginning.
Posted on 4/17/18 at 7:16 am to thejudge
I had a 3 ton in my 1550 sqft house and it struggled to keep the house cool. Replaced it with a 4 ton a few years ago. Works perfectly. Really glad I didn’t go with the 3.5 ton.
All houses are different. Get it sized by an expert.
All houses are different. Get it sized by an expert.
This post was edited on 4/17/18 at 7:48 am
Posted on 4/17/18 at 7:18 am to thejudge
I have a 5 ton in 2400 sq ft.
Posted on 4/17/18 at 7:24 am to thejudge
You are the only one qualified to make the choice. Did your 3 ton unit not keep up in the heat of the summer?
4 tons is a ridiculous amount for that small of a house. Yeah, I get the amount of latent cooling required down there is a lot but that is terrible.
4 tons is a ridiculous amount for that small of a house. Yeah, I get the amount of latent cooling required down there is a lot but that is terrible.
Posted on 4/17/18 at 7:24 am to thejudge
Have you investigated the ductless minisplits at all? Just curious.
Posted on 4/17/18 at 7:27 am to thejudge
Rule of thumb is 400 sq ft per ton
on an older house with bad insulation and less energy efficient windows you may want more tonnage
Over sizing can also be an issue. as the unit will only de-humidify the air when it is running.
on an older house with bad insulation and less energy efficient windows you may want more tonnage
Over sizing can also be an issue. as the unit will only de-humidify the air when it is running.
Posted on 4/17/18 at 7:27 am to Perrydawg
quote:
it is a single story ranch style house so I guess a two story house could mean having a 4 ton
an 1800 sq ft 2 story will have less cooling load than an 1800 sq ft ranch/single story because of the smaller roof exposure.
For example, I have 3200sqft 2-story and the design parameters where I live are 100F and my cooling load is about 1.6 tons.
Posted on 4/17/18 at 7:28 am to thejudge
Page 1 of 2
Popular
Back to top
Follow TigerDroppings for LSU Football News