AC Repair
Blown capacitors, failed contactors, frozen coils, refrigerant leaks, bad airflow — we diagnose the root cause and fix it right the first time.
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Air Conditioning
Repair, tune-ups, and AC replacement across the Tri-Valley. We diagnose fast and get you cool.
When your AC quits on a 100-degree Livermore afternoon, you don't have time to wait. Cohen Air shows up fast, finds the real cause, and gets your home cool again — no upsells, no guesswork.
What We Handle
Air Conditioning Services
Tune-ups & Maintenance
Annual service keeps your system running efficiently: coil wash, drain line flush, refrigerant check, electrical inspection, and filter swap.
AC Replacement
When repair stops making sense, we size and install a high-efficiency system matched to your home — including heat pump options for year-round comfort.
Call us if you notice:
- Warm air blowing from vents
- Ice on the outdoor unit or refrigerant lines
- Rising electric bills with no usage change
- Loud clicking, grinding, or buzzing
- AC short-cycling (on/off every few minutes)
- Water pooling near the indoor unit
Ready when you are.
Family-owned. Licensed. Same-day service when possible across Livermore and the Tri-Valley.
FAQ
Common Questions
When should I have my heating and cooling equipment serviced?
Your HVAC systems should be serviced before the start of each heating and cooling season. Air conditioners are best tuned up at the end of winter or beginning of spring; heat pumps and furnaces at the end of summer or beginning of fall.
How often should I replace my HVAC air filters?
Every one to three months depending on usage. This is vital to system performance and to your indoor air quality.
What should I do about my frozen AC?
Shut the system off and call us. Running a frozen AC can cause serious damage to the compressor and coil. We'll diagnose the airflow or refrigerant issue behind it.
How do I know when it's time for an AC replacement?
Age (10–15+ years), rising repair costs, refrigerant phase-outs, and dropping efficiency are all signs. We'll give you an honest comparison of repair vs. replace.
What's wrong with my noisy air conditioner? Can I fix it myself?
Don't try to fix it yourself — HVAC electrical and refrigerant systems are dangerous without the right training and tools. Call us for a safe diagnosis.
What is dual zone air conditioning?
Thermostats and duct dampers that let you cool different areas to different temperatures — great for multi-story homes or rooms used at different times of day.
How can I lower my electric bill this summer?
Raise the thermostat a few degrees, close curtains on sunny windows, run ceiling fans, replace filters, and get an annual AC tune-up to keep efficiency high.
Ready when you are.
Family-owned. Licensed. Same-day service when possible across Livermore and the Tri-Valley.