Hope this helps a bit. I recently had a rialto home built. My master bedroom, media room. Setting the temp to 70 at night, the upstairs bedroom is 60 degrees and downstairs bedroom is 74 and airflow seems to be an issue.
Our system is 2 zones, upstairs and downstairs and is a carrier, high efficiency 16 seer. Am I wrong? I carrier, the builder nor the hvac company will answer my question on the size of the unit being appropriate. Hello Adriana, this seems like an inadequate airflow issue indeed. You can rearrange the current setting by putting the bigger of the 2-zone units upstairs the one with higher airflow.
That would distribute the cooling more evenly. ACs go out a lot out here. Hello L. It would be best if you would look for a new AC with up to 1 ton additional cooling capacity. The lower level is cooled by a ductless mini split. The top level, which is where I need the central ac, is approximately sq ft with 8 ft ceilings. Two people will be living in the house.
There is a sliding glass door that opens onto the back deck. House faces east. There is currently a 3. What size ac would be best, 2. Or am I off base here? For the upper part, the 3. My national home builder put a 2 ton unit in my 1, sq ft home and during the summer, we have difficulty cooling 2 rooms of the house.
I just had an 11 month inspection and the inspector said the unit is 2 tons and should be at least 2. The warranty group tells me he is using old standards and they have engineering reports that claim 2 tons is sufficient. In light of the fact that i have 2 rooms degrees warmer than the rest of the house, I think the home builder is trying not to upgrade the system appropriately. Can you comment of what size the system should be?
So, even this simple rule tells you you would need a 2. Hope you resolve the issues as smoothly as possible. Builder is consistent stating that one 5 ton unit is enough to cool the home without burning itself out and more tonnage will cause mold.
Even though during the planning process they discussed needing 2 units and even built the 2nd AC pad. Can you help? Now, South Texas is hot, so you should be having higher-than-national-average cooling needs. That may be a good reason to look for 2 units with a net capacity larger than 5 tons. Nonetheless, the installers had an on-sight look and has more detailed information. As of the old statistics, AC tonnage calculation is not an exact science and you can get different results using roughly the same standards.
Hope this helps in understanding the two different suggestions. We just had a house built but feel they put the wrong condenser in. We have a dual zoned home between the upstairs and the down stairs.
Hello Mike, the 3. The climate, insulation, windows, sunshine, and so on have an impact on cooling requirements as well, beyond the rule of thumb. Chances are that the 3. Theoretical calculations are one thing. Practically, however, you can see the real-life cooling needs when the summer heatwave kicks in.
My house in Las Vegas is a two story with a total square footage of sq. About half of the house is floor to ceiling high and the other half has the 2nd floor. Can you suggest how many tons of condenser unit do I need if I have to replace the old existing unit?
Thank you. Hello Loreto, the best thing to do here is to check the tonnage of the existing AC unit. I am looking to replace my ac. I live in Fort worth, TX north tx , my home is 20 yrs old sq foot ranch home with and currently has a 5 ton original ac.
I had 2 estimates for a new ac and one tech said based on my duct work looks like I have an oversized ac. We do have issues in the summer and seems the ac is always running. The other guy estimate for exactly what I have currently and when asked him he said it would be to Hello Anita, if you have a 5 AC unit and it has to run all the time in the summer, you have an adequately sized AC. I need to replace an old central air unit.
This is an office space on sq ft in NYC. The waiting area is sq ft. The old unit was 5 ton. In my view 3 ton should be enough. This is a large, box-shaped unit that has louvers on the sides and a wire grille on top. Look around the back or on the side of the unit, and you should find a label with a lot of information on it. Find the model number on that label and within that number you will see two digits that can be divided by They are usually toward the end of the model number and will be 24 or 30 or 48 or another number like that.
Divide this number by 12 to get the tonnage of your AC unit. Most homes will use an air conditioner that is between 1 and 5 tons. Here are the numbers that you will probably see and the tonnage they represent:. Here are a couple of examples of model numbers.
See if you can tell how many tons they are. If you determined that the Rheem model is 2 tons using the 24 in the model number , you are correct. The RA16 at the beginning of the number is the model, the RA Your home air conditioning may come from a heat pump which does double duty; it cools in the summer and heats in the winter. The outdoor condenser unit will look just like an AC unit. Rain Gutters. Older and Historic Houses. Crawl Spaces. Building Permits.
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