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Install ceiling fans in every room, living here in Phoenix AZ it it over 100 degrees on a daily basis even upwards of 110 everyday and without ceiling fans it would be ridiculous to try to keep house cool without them. We also have two exhaust fans on top of roof that as the attic/crawl space above house heats up they pull heat out of space. You can also get solar powered vent fans. Even vents in the eaves would help too. Get ceiling fans with multiple speeds that can either direct air up or down depending on whether you want your house cooler or warmer. These will help circulate warmer air in winter also, they help keep utility costs down and sometimes utility comp. give breaks on bills if you have the fans,solar vents or other items to help reduce costs.
Install ceiling fans in every room, living here in Phoenix AZ it it over 100 degrees on a daily basis even upwards of 110 everyday and without ceiling fans it would be ridiculous to try to keep house cool without them. We also have two exhaust fans on top of roof that as the attic/crawl space above house heats up they pull heat out of space. You can also get solar powered vent fans. Even vents in the eaves would help too. Get ceiling fans with multiple speeds that can either direct air up or down depending on whether you want your house cooler or warmer. These will help circulate warmer air in winter also, they help keep utility costs down and sometimes utility comp. give breaks on bills if you have the fans,solar vents or other items to help reduce costs.
Thanks. We have ceiling fans in every room. We will be installing an attic exhaust fan near the exterior vent. HOA forbids cutting into roof.
I don't think it is unrealistic to expect the AC to work well. Mine is cooling down to 70F with outside 100F no problem. This is mostly about air leaks and Windows or a poor AC. Worst is leaking ducts or air handler in the attic. I had that in my previous house and the AC could not keep up either.
I was taught in HVAC service school that as a repair tech we needed to encourage customers to keep the AC 20 degrees below the outside temp for best performance. That was 30 yrs ago but it's a good rule to go by today. The AC system you have won't last very long if it never shuts off.
Capacities are rated at 80° indoors and 95° outdoors...a 15° margin. Your expected margin is closer to 30°. Setting the stat below 80 or run with weather above 95 and the equipment capacity drops. A Dallas house (98° outdoor design temp) with a 2 ton load/requirement would require 3.5 tons worth of equipment and the ductwork sized to deliver 3.5 tons worth of airflow(noise) to reach 70° indoors. That's without including any duct leakage, and without seeing the job site, I can assure you that your leakage rate isn't -0-.
You'd be better off managing the heat gains with better insulation, better glass, less duct leakage, and less infiltration.
Buy them a window unit if they want it to be that cold. It's unrealistic to expect it to be 65 inside when it's 100 outside. That central ac won't last long with them using it like that.
A good attic fan probably wouldn't hurt though, it'll reduce the heat transferring through the ceiling.
Completely not true.
I have kept my AC on 65 at night all my life living in South Carolina and South Florida and it has never been a problem even when the temps were close to 100 degrees at night.
In my home right now, my AC is reading 68 degrees (I turn it up to 75 by day) the temp is 90 with a 100 degree heat indices.
I have kept my AC on 65 at night all my life living in South Carolina and South Florida and it has never been a problem even when the temps were close to 100 degrees at night.
In my home right now, my AC is reading 68 degrees (I turn it up to 75 by day) the temp is 90 with a 100 degree heat indices.
You have an oversized system, if you like it, that's fine - but it isn't properly sized according to industry standards. 78 is fine & you won't find rental standards that require a lower temp than that, especially on record-heat days. The op's system is working as designed & there is no problem to "resolve".
The design max temp for Dallas is 99 degrees - 99% of the time, temps in Dallas are below that number. If the temps climb above 99, it's perfectly acceptable to have an interior temp above 78 degrees. Page 93 if you care to look it up.
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