340 posts, read 414,887 times 1,135 posts, read 1,624,739 times 589 posts, read 882,928 times 1,345 posts, read 1,756,296 times 5,150 posts, read 5,049,224 times 8,406 posts, read 14,815,803 times Originally Posted by Glmore My home is 1600 sq. ft. , and I replaced the 3.5 ton AC unit and air handler a couple years ago for $2900. That is closer to the lower end than the higher end. The furnace was, and is, fine. Someone said 1 ton per 500 sq. ft., and I agree. I wanted supercooling ability, but was told if the unit cools the home too quickly, it doesn't remove enough humidity. I didn't understand that when I did the first system 12 years ago, but I learned.But in homes the size of yours and mine, zoning simply means closing a vent or two to redirect the air. The master suite is upstairs in my tri-level home, and I closed all the vents on the bottom floor to force more cool air into the master suite, It works well, since I don't use the downstairs bedrooms, They stay cooler anyway, year round.

Our homes aren't big enough to warrant a true zoned system.car air conditioning repair gilbert az Originally Posted by Sean_CLThow to charge a ac unit by superheat Good luck selling that house. car ac repair kissimmeeYou may not be able to have window units depending on your neighborhood rules. Window units are noisy, air leaks around them, bugs can get in, they are easily stolen and provide an easy entrance for would-be burglars, etc. They are a last resort IMHO. 104 posts, read 221,403 times Originally Posted by vmaxnc Some good info .....could you PM me the company you used for your AC replacement? 3,915 posts, read 2,674,064 times Having paid to replace several ACs myself in different homes, I will add the following.

If you are comfortable in your home now, then there isn't any need to change how it works by adding zones, etc. If it is a builder grade system you are changing, you should however look at increasing the efficiency and reducing the noise while you have the opportunity to do so. Stick to a middle of the range unit. That last % or so of efficiency isn't worth it. You should probably pay for a 2 speed system. They mostly operate at low speed but have the ability to shift higher during periods of a lot of heat or if you change the temp. Most contractors will include venting changes during the install. If you have a vent that is too little or too much, or a room that isn't heated or cooled properly, this is the time to tell them about it. Since you are doing a preemptive install, i.e. it's still working, I'd recommend waiting until they are in a slow period which would be the fall or spring. There are better deals then. Don't forget to check for rebates including those from the power company.

101 posts, read 141,257 times Originally Posted by Jareb Does this rule of thumb apply equally to one and two story homes? Does it apply in a linear fashion as square footage increases? I seem to be ok with two 2.5 ton units cooling a 3,600 square foot two-story house. Goodman 14 SEER 3.5 Ton 80K BTU 80% Efficient One Stage Gas Upflow System Goodman 14 SEER 3.5 Ton 100K BTU 80% Efficient One Stage Gas Downflow System Goodman 14 SEER 4.0 Ton 80K BTU 80% Efficient One Stage Gas Upflow System Goodman 14 SEER 3.5 Ton 120K BTU 80% Efficient One Stage Gas Horizontal System Goodman 14 SEER 4.0 Ton 100K BTU 80% Efficient One Stage Gas Downflow System Goodman 14 SEER 4.0 Ton 120K BTU 80% Efficient One Stage Gas Horizontal System Goodman 14 SEER 5.0 Ton 80K BTU 80% Efficient One Stage Gas Upflow System Rheem 3.5 Ton 14 SEER AC system with 80% 100K BTU Natural Gas Furnace Goodman 14 SEER 5.0 Ton 100K BTU 80% Efficient One Stage Gas Upflow System

Goodman 14 SEER 5.0 Ton 120K BTU 80% Efficient One Stage Gas Horizontal System Goodman 14 SEER 5.0 Ton 100K BTU 80% Efficient One Stage Gas Downflow System Rheem 4.0 Ton 14 SEER AC system with 80% 100K BTU Natural Gas Furnace Goodman 14 SEER 5.0 Ton 120K BTU 80% Efficient One Stage Gas Upflow System Goodman 15 SEER 3.5T 96% 80K BTU Two Stage Variable Speed Natural Gas System - Horizontal Goodman 15 SEER 3.5T 96% 80K BTU Two Stage Variable Speed Natural Gas System - Downflow Goodman 15 SEER 3.5T 96% 80K BTU Two Stage Variable Speed Natural Gas System - Upflow Goodman 15 SEER 4T 96% 80 KBTU Two Stage Variable Speed Natural Gas System - Horizontal Goodman 15 SEER 3.5T 96% 100K BTU Two Stage Variable Speed Natural Gas System - Horizontal Goodman 15 SEER 4T 96% 80K BTU Two Stage Variable Speed Natural Gas System - Downflow Goodman 15 SEER 4T 96% 80K BTU Two Stage Variable Speed Natural Gas System - Upflow Goodman 15 SEER 3.5T 96% 100K BTU Two Stage Variable Speed Natural Gas System - Downflow

Goodman 15 SEER 3.5T 96% 100K BTU Two Stage Variable Speed Natural Gas System - Upflow Goodman 15 SEER 4T 96% 100K BTU Two Stage Variable Speed Natural Gas System - Horizontal Goodman 15 SEER 4T 96% 100K BTU Two Stage Variable Speed Natural Gas System - Downflow Goodman 15 SEER 4T 96% 100 KBTU Two Stage Variable Speed Natural Gas System - Upflow Rheem 5.0 Ton 14 SEER AC system with 80% 100K BTU Natural Gas Furnace Goodman 14 SEER 5T 96% 100K BTU Two Stage Variable Speed Natural Gas System - Horizontal Goodman 14 SEER 5T 96% 120 KBTU Two Stage Variable Speed Natural Gas System - Horizontal Goodman 14 SEER 5T 96% 100K BTU Two Stage Variable Speed Natural Gas System - Downflow Goodman 14 SEER 5T 96% 100K BTU Two Stage Variable Speed Natural Gas System - UpflowIn our last blog post, we revealed the calculation that Denver homeowners can use to get a good idea of what size central air conditioner their home needs. The next obvious question is... how will the size of the ac unit you need affect the price to install or replace your air conditioner?

While central air conditioning units range in size from 1.5 tons to 5 tons, size will have only a slight affect on the cost to replace your air conditioner until you get into the bigger sizes, 3.5 tons and bigger. You won’t see much if any differences in the cost of units that are 3-tons or smaller in size. Most companies charge roughly the same price for ac units ranging from 1.5 tons to 3 tons, and those that don’t only charge slightly more for 3-ton unit than they do for a 1-ton unit. A 3.5-ton unit will cost the company doing your installation substantially more than smaller a unit in the 1.5 - 3 ton size range. Here’s a general idea of how much size affects the cost to install a new central air conditioner... 13 SEER AIR CONDITIONERS 3.5-ton units cost anywhere from $400-$700 more than a comparable 3-ton unit. 4-ton units will typically cost $500 - $800 more than a comparable 3-ton unit. 5-ton units will cost $800 - $1,200 more than a comparable 3-ton unit.

16 SEER AIR CONDITIONERS 3.5-ton units cost anywhere from $500-$800 more than a comparable 3-ton unit. 4-ton units will typically cost $800 - $1,100 more than a comparable 3-ton unit. 5-ton units will cost $1,500 - $2,000 more than a comparable 3-ton unit. Cost differences vary from brand to brand, as well as what SEER rating you decide to go with, and what type of evaporative coil you choose to install. It’s a big mistake to select a company because they propose a smaller unit at a lower cost - especially if they don’t offer a written 100% money-back guarantee. Some companies will downsize the unit you need to be able to offer you a lower price because they aren’t on the hook if your air conditioner doesn’t cool your home properly during the hottest part of the summer. What good is saving a few hundred bucks if your new air conditioner can’t keep your house comfortable when it’s 90 degrees outside? It’s far more important to hire a company you know you can trust to install the correct size air conditioner for your home.