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The efficiency of air conditioners is often rated by the Seasonal Energy Efficiency Ratio (SEER) which is defined by the Air Conditioning, Heating, and Refrigeration Institute in its 2008 standard AHRI 210/240, Performance Rating of Unitary Air-Conditioning and Air-Source Heat Pump Equipment.
At All Seasons Heating & Air Conditioning, we’re proud to serve homeowners and businesses across Longview, TX and the surrounding areas. Whether you need fast A/C repair, reliable heating installation, or seasonal maintenance, our team is here to help.
The SEER rating of a unit is the cooling output during a typical cooling season divided by the total electric energy input during the same period. The higher the unit’s SEER rating, the more energy efficient it is. In the U.S., the SEER is the ratio of cooling in British thermal units (BTU) to the energy consumed in watt-hours.
For example, consider a 5,000-British-thermal-unit-per-hour (1,500 W) air-conditioning unit, with a SEER of 10 BTU/W·h, operating for a total of 1000 hours during an annual cooling season (e.g., 8 hours per day for 125 days).
The annual total cooling output would be:
With a SEER of 10 BTU/W·h, the annual electrical energy usage would be about:
The average power usage may also be calculated more simply by:
If your electricity cost is 20¢/kW·h, then your cost per operating hour is:
At All Seasons Heating & Air Conditioning, we offer expert A/C repair, heating installation, maintenance, and more for homes and businesses across Longview and nearby East Texas communities.
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Whether you’re facing inconsistent cooling or rising energy bills, our AC repair specialists are here to help. We provide fast, reliable service to keep your system running smoothly and your indoor air comfortable year-round.
At All Seasons Heating & Air Conditioning, we’re proud to serve homeowners and businesses across Longview, TX and the surrounding areas. Whether you need fast A/C repair, reliable heating installation, or seasonal maintenance, our team is here to help.
We’re 5-star rated, A+ BBB accredited, and committed to honest, upfront pricing with 100% satisfaction guaranteed. Let us help you keep your home comfortable year-round.
Give us a call or fill out our quick online form. We’ll listen to your needs, answer your questions, and schedule a time that works for you.
Our technicians assess your current system and home needs to provide honest, straightforward options that fit your budget and goals.
Once you’re ready, we handle everything from equipment delivery to professional installation—quick, clean, and done right the first time.
We offer same-day service in most cases for Longview, Marshall, Kilgore, and nearby towns. Call us 24/7 at (903) 753-2665 and we’ll get you on the schedule fast.
It could be something simple like a clogged filter or something deeper like a refrigerant leak. If you're in Longview or nearby, our licensed techs can diagnose it fast and get your home cool again.
Yes! We work with contractors and homeowners on everything from design to install for new builds and remodels. If you’re building a home, here’s a checklist from This Old House to help plan ahead.
For most East Texas homes, we recommend replacing filters every 1–2 months—especially during heavy use in summer or if you have pets. The EPA offers this helpful indoor air quality resource.
Our service plans include system inspections, tune-ups, filter checks, and discounts on repairs. They keep your system efficient and help you avoid costly breakdowns. Here’s what the Department of Energy says about annual HVAC maintenance.