Air Conditioning
Reliable, high-efficiency cooling solutions for Bay Area homes
How Air Conditioners Work
Air conditioners cool your home by moving heat outdoors. Refrigerant absorbs heat indoors, releases it outside, then repeats the cycle.
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The Evaporator Coil
The indoor coil absorbs heat from household air. Moisture condenses on the coil, and the blower sends cooled air through your ducts.
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The Compressor
The outdoor compressor raises refrigerant pressure and temperature so it can release the heat collected indoors.
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The Condenser Coil
The outdoor condenser coil releases heat into the outside air. The refrigerant cools and turns back into a liquid.
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The Expansion Valve
The expansion valve lowers refrigerant pressure and temperature before it returns to the indoor coil.
The cycle continues until your home reaches the thermostat setting.
Benefits of Modern Air Conditioning
Today’s air conditioning systems go far beyond simple cooling. They deliver comfort, health, and efficiency in ways that older units never could.
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Reliable, Consistent Cooling
A properly sized, variable-speed system delivers steady cooling with fewer hot and cold spots.
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Humidity Control
Air conditioning removes some moisture as it cools, helping your home feel more comfortable on humid days.
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Improved Indoor Air Quality
The system filter captures dust, pollen and pet dander. Replacing the right filter regularly helps maintain airflow and indoor air quality.
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Modern Energy Efficiency
High-efficiency equipment adjusts output to demand, helping reduce cooling energy use and utility costs.
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Enhanced Home Value
An updated, efficient AC system can be an attractive feature for future buyers.
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Quieter Operation
Modern compressors, fans and insulated cabinets can make cooling much quieter indoors and out.
Understanding SEER Ratings
SEER2 measures seasonal cooling efficiency. A higher rating can lower electricity use, though the best value depends on your home, usage and energy costs.
We compare equipment options and size the system for your home so you can balance upfront cost and long-term efficiency.
Minimum
15 SEER2
Entry-level efficiency with a lower upfront cost. We check current requirements for the equipment and installation date.
Recommended
16-20 SEER
A practical balance of upfront cost and operating efficiency for many Bay Area homes.
Premium
20+ SEER
Variable-speed equipment offers precise cooling, quiet operation and strong efficiency for homes with higher cooling use.
Types of Air Conditioning Systems
There are several types of air conditioning systems, each with distinct advantages. The best choice depends on your home’s layout, existing infrastructure, and cooling needs.
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Central Air Conditioning
Central AC cools the whole home through existing ductwork. Best for: homes with ducts that need even, whole-house cooling. Consider: duct condition and correct system sizing.
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Ductless Mini-Split Systems
Ductless mini-splits cool individual rooms or zones without new ducts. Best for: additions, homes without ductwork and hard-to-cool spaces. Consider: indoor unit placement and installation cost.
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Window & Portable Units
Window and portable units offer lower upfront cost for one room or temporary use. They are usually noisier and less efficient than a professionally installed whole-home system.
System Comparison at a Glance
| Feature | Central AC | Ductless Mini-Split | Window / Portable |
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| Whole-Home Cooling | Yes | Yes (multi-zone) | No (single room) |
| Efficiency (SEER) | 15-26+ | 17-33+ | 8-12 EER |
| Ductwork Required | Yes | No | No |
| Installation Cost | Moderate-High | Moderate-High | Low |
| Noise Level | Low-Moderate | Very Low | High |
| Zone Control | With add-ons | Built-in | N/A |
| Lifespan | 15-20 years | 15-20 years | 5-10 years |
Signs You Need AC Repair or Replacement
Catching problems early can save you from costly breakdowns during the hottest days of summer. Here are the warning signs to watch for.
Signs Your AC Needs Repair
Call for a diagnosis if you notice warm air, weak airflow, unusual noises, frequent cycling, water leaks, odors or a jump in cooling costs.
A burning smell may signal an electrical problem; turn the system off and arrange service.
Signs It Is Time for AC Replacement
Replacement may be worth considering when your AC has frequent breakdowns, major repair costs, persistent comfort problems or an older refrigerant system. We can compare repair and replacement costs for your equipment.
Our Air Conditioning Services
From new installations to precision repairs, Allison Air Comfort Solutions provides comprehensive AC services for Bay Area homeowners.
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AC Installation
We size your new system for your home, install it carefully and verify performance before we leave.
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AC Repair
We diagnose the issue, explain your options and provide an upfront quote before completing the repair.
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Preventive Maintenance
Annual maintenance helps protect efficiency and catch problems early. We inspect key components, clean coils and drains, and check safe operation.
Ready for Reliable, Efficient Cooling?
Need AC installation, repair or maintenance? Our Bay Area team is ready to help.