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re: New Construction HVAC question
Posted on 11/2/18 at 9:04 am to TigerstuckinMS
Posted on 11/2/18 at 9:04 am to TigerstuckinMS
quote:
An AC's job isn't really to lower air temperature; Its job is to remove humidity and ventilate the conditioned space.
I am a contractor and have seen major issues with people oversizing their HVAC tonnage.
Poor insulation or improper HVAC is a major problem that can damage your home and make you sick.
You want the AC to run for a while to remove the moisture in the house.
Posted on 11/2/18 at 9:08 am to TheEnglishman
3 ton unit for living area
2 ton unit for bedrooms
Go with American Standard
2 ton unit for bedrooms
Go with American Standard
Posted on 11/2/18 at 9:25 am to TheEnglishman
quote:
I am a contractor and have seen major issues with people oversizing their HVAC tonnage.
Poor insulation or improper HVAC is a major problem that can damage your home and make you sick.
You want the AC to run for a while to remove the moisture in the house.
Wow. First off, you don't run your AC primarily to remove moisture and humidity. You would be better off running ceiling fans and a dehumidifier financially. Hell of a lot cheaper.
If someone is having issues with circulation that's a whole different issue. Could be poor ducting for one. There's a multitude of reasons outside of simply too big of AC. I've seen mold issues from poor circulation in houses with too small of an AC too.
Again, 2550 is by no means too small for a 6 ton system. 400-500 sq ft is the recommended sq footage per ton. OP is very much on the border of needing a 6 ton. 5 ton will be fine, but its a new build so why would you not spend a little more on a slightly larger unit to give you some room for error?
ETA: Yeah there are programs that determine your need, in a perfect condition. You have a wife and kids at home going in and out through the doors all day? Imperfect. You install a doggy door that seeps warm air from the outside and you don't know it? Imperfect.
Outside of car salesman, HVAC industry is about as slimy as it gets. They will quote you and sell you on all kinds of BS you don't need or want just because it makes them money.
This post was edited on 11/2/18 at 9:33 am
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