Air Conditioners
Cool, quiet, and a little drier.
A well-designed air conditioner does two jobs at once. It carries heat out of your home, and it draws moisture out of the air, which is why a properly cooled room feels fresh rather than clammy.
How central air works
Central air conditioning is a "split system": one unit outside, one inside, joined by two copper lines. Refrigerant flows between them and carries the heat.
Indoors, warm air from your rooms passes over a cold coil. The coil absorbs the heat, and the cooled air travels back through your ducts. Outdoors, a second coil releases that heat into the open air.
As the indoor coil cools the air, moisture condenses on it, much like drops forming on a glass of iced water on a summer day. That water drains away, taking humidity with it.
Comfort you can feel
Not all air conditioners run the same way, and the difference is felt in every room.
Single-stage
Runs at full power or not at all. It works, but it cycles on and off often, which brings drafts and temperature swings.
Two-stage
Spends most of its time on a lower, gentler setting. It runs longer and quieter, keeps temperatures steadier, and removes more moisture.
Variable-speed
Adjusts its output in small steps to match exactly what your home needs at that moment, for the most even temperatures, the quietest operation and the best humidity control.
Longer, gentler running also mixes the air more thoroughly, so you avoid the familiar pattern of warm air near the ceiling and cool air at your feet.
14.3 SEER2 minimum
Efficiency in California
California sits in the federal "Southwest" efficiency region, which has some of the strictest air conditioning standards in the country. Most new home systems installed here must reach at least 14.3 SEER2, and must also meet a hot-weather EER2 minimum, because what matters on an inland August afternoon is how efficiently the system cools at its hardest.
Higher-efficiency models cost more to buy and less to run. Before you decide, we will show you what the difference is likely to mean for your home, so you can choose with real numbers in front of you.
Why matched systems matter
The outdoor unit and the indoor coil are designed and tested as a pair. Replace only the outdoor half and the system may never reach its rated efficiency, and the strain can shorten its life. It is the lowest quote, rarely the best value.
Refrigerants have changed too. New systems manufactured since January 1, 2025 use newer, lower-impact refrigerants such as R-454B or R-32, and are engineered around them. An existing R-410A system cannot be converted to the new refrigerant, which is one more reason to replace both halves together.
Signs it may be time
None of these automatically means replacement. We will tell you honestly whether a repair makes more sense.
- Your system is more than 15 years old, or repairs are becoming routine.
- Summer bills keep rising while your habits have not changed.
- Some rooms never quite cool, or the house feels sticky even when it is cool.
- The outdoor unit is louder than it used to be.
Living near the coast
Salt carried on the sea breeze slowly corrodes metal. If your home is near the coast, we will advise on where to place the outdoor unit and how often to rinse its coil, simple care that adds years to its life.
Cooling and clean air go together
Every cubic foot of air your air conditioner cools also passes through its filter and over its coil. Better filtration, a coil that stays clean and a drain pan that never holds standing water all make the air you breathe healthier, not just cooler.
Discover Healthy AirEfficiency minimums per the U.S. Department of Energy 2023 central air conditioner standards for the Southwest region. Refrigerant dates per the AIM Act technology transitions rule.
Ready for a quieter, cooler summer?
We will size and design a system for your home.