ONzone Heating & Cooling

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ONzone Heating & Cooling HVAC Service & Installation in Bay Area

26/06/2026

❄️ Another successful AC repair completed! 🔧

This system is back to peak performance after replacing the TXV valve, filter drier, and performing a professional condenser coil cleaning.

Proper repairs and maintenance help improve cooling efficiency, reduce energy consumption, and extend the life of your HVAC system.

📞 +1 (650) 698-7979
📧 [email protected]
🌐 www.onzone-ca.com

📍 Proudly serving the San Francisco Bay Area.

24/06/2026

❄️ Another successful mini-split installation completed!

Installed a new wall-mounted heat pump system for year-round comfort and energy efficiency. Clean installation, proper setup, and attention to every detail.

📍 Serving the Bay Area
📞 +1 (650) 698-7979
📧 [email protected]

Follow for more HVAC projects, repairs, and installations.

14/06/2026

❄️ Poor airflow? We found the problem.

This Goodman system had a heavily clogged evaporator coil, an improperly installed condensate drain line, and no safety float switch protection.

🔧 Coil cleaning
🔧 New air filters
🔧 Proper P-trap installation
🔧 Safety float switch added
🔧 Cleaned up and improved the installation

Now the system is running efficiently with better airflow and added protection against future drain issues.

📍 Bay Area, CA

📞 (650) 698-7979
📧 [email protected]
🌐 onzone-ca.com

11/06/2026

🔧 Mitsubishi City Multi Compressor Replacement

A failed compressor can bring the entire VRF system down. We diagnosed the issue, replaced the compressor, performed a nitrogen pressure test, pulled a deep vacuum, and verified system operation.

✅ Compressor replaced
✅ System tested
✅ Cooling restored

Serving homeowners and businesses across the Bay Area.

📍 San Jose, CA
📞 ONzone Heating & Cooling

10/06/2026

⚡ Tesla Wall Connector installed in San Jose!
Fast, clean, and code-compliant installation. Ready to charge 🔋🚗

09/06/2026

Customer said: “My AC isn’t cooling like before…” 👀

Here’s why.

Dirty evaporator coils can reduce airflow, lower efficiency, and make your system work harder than necessary.

✅ Professional Coil Cleaning
✅ Improved Airflow
✅ Better Efficiency

📍 South San Francisco, CA

ONzone Heating & Cooling
📞 650-698-7979

07/06/2026

Cleaning a dirty outdoor condenser coil to improve airflow, efficiency, and overall AC performance 🔧
Regular maintenance helps your system run better and last longer.

📍 Bay Area HVAC Service
❄️ ONzone Heating & Cooling

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