“Thermostat kept dropping connection. Updated firmware and changed Wi-Fi channel. System now stays online reliably.”
“Cooling too slow after startup. Compressor was old and weak. Replaced it and added hard start kit. Faster cooling now.”
“Thermostat display dimmed. Battery dying and wiring loose. Replaced battery and secured wiring. Now fully functional.”
“System wouldn’t blow warm air. Diagnosed open gas valve. Replaced it and heating returned immediately.”
“Cooling worked but airflow was stale. Cleaned indoor coil and sanitized blower housing. Air feels fresh again.”
Advantage Plus AC and Heating Repair provides: HVAC diagnosis, repairs, and full system installs. They serve residential and commercial customers in Simi Valley, CA.
Advantage Plus AC and Heating Repair has a 5.0 out of 5 star rating based on 10 Google reviews.
All listed providers have a verified California contractor license at time of publication. You can verify on the Contractors State License Board (CSLB) lookup at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/CheckLicense.aspx.
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Licensing verified 2026-04-22. Reviews refreshed 2026-04-22.
Licensing data: Contractors State License Board (CSLB) · Company data: verified business records + Google Business profile
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