I live in Houston Texas as well as summer temps are frequently in the 90's for a year of the entire year. The home of mine is fairly new and has a very good quality core HVAC system. In spite of much of the air conditioning of mine is accomplished by the older technology of an area or "chillwell portable ac car - just click the up coming internet page - https://www.federalwaymirror.com/national-marketplace/chillwell-portable... ," window unit.
My room product is a 12,500 BTU Energy Star design that cost you aproximatelly $260. It's not rated being as effective as my main product but consumes less energy every BTU in the opinion of mine. This's since it does not run a big fan to blow air through the entire home. We run the window model from aproximatelly 8PM to 8PM on days that are warm. When we're not home the central product is turn off and the window device helps to keep the house about 15 degrees cooler compared to the exterior for our 1,900 sq foot house. It also keeps the humidness low. We supplement the window product when we're home with the main AC. Cooling the home this way decreases - https://slashdot.org/index2.pl?fhfilter=decreases the energy costs of ours. We then run the central unit about 50 % less, hence it needs to have an extended life. On the very hot days, when operating the window unit and the central device, we get additional cooling power.
In Texas it's a big deal when your central AC fails during the summer months. We run a second 12,000 BTU device when the main AC is broken. Which makes the house livable during the fix time.
Another benefit of getting window AC units happens when there is a power failure. Windstorms as well as hurricanes are routine in the Houston area. We like getting a generator along with window AC units as insurance for power failures. During IKE we ran 2 window units by generator for a week, together with the refrigerator, microwave, and some lights.