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Claim This BusinessOzone Service operates as a professional HVAC contractor based in San Jose, California, where the company has built a strong reputation through consistent five-star service. With 74 verified client reviews all awarding perfect five-star ratings, the company has become a trusted name for heating and cooling solutions throughout the Silicon Valley region, including San Jose, Mountain View, and Sunnyvale neighborhoods. Their rapid-response model ensures clients receive same-day or next-day service, with technicians available around the clock, every day of the week , including weekends and holidays. This availability proves particularly valuable during unexpected system failures when San Jose residents need immediate assistance.
What distinguishes Ozone Service from typical HVAC contractors is their commitment to practical, code-compliant solutions that prioritize customer savings. Rather than recommending expensive ductwork replacements or unnecessary system overhauls, their technicians assess existing infrastructure and make precise adjustments , such as damper tuning and duct sizing corrections , to achieve optimal performance without destructive renovations. Their expertise spans multiple brands, including Gree heat pump systems, and they handle advanced configurations like communicating thermostats that require specialized programming. The company stands behind their workmanship, addressing code violations from previous installations and ensuring every system meets current regulatory standards.
Client experiences highlight the technical skill and integrity of specific team members. Technician Andrew recently diagnosed a furnace issue in minutes, discovering a rusted connector that another company had missed , and completed the repair at no cost, declining payment for diagnostic work because no actual repair was performed on the furnace. For heat pump installations, lead installer Alex and technician Konstantin managed a complex three-day project in challenging crawlspace conditions, arriving on a Saturday to complete work without additional charges. Their patience with technical questions and willingness to handle extra requests like UV light sanitizer installations demonstrates the comprehensive, detail-oriented approach that generates consistent five-star feedback.
Three verified reviews all award five stars, with customers specifically praising cost-saving solutions, free diagnostic services, and around-the-clock availability. Reviewers highlight technicians Andrew, Alex, and Konstantin by name, citing their patience, technical expertise, and willingness to handle complex installations without upcharging.
| Sunday | Open 24 hours |
| Monday | Open 24 hours |
| Tuesday | Open 24 hours |
| Wednesday | Open 24 hours |
| ThursdayToday | Open 24 hours |
| Friday | Open 24 hours |
| Saturday | Open 24 hours |
Professional installation of Gree heat pump systems including dual heat pump + furnace configurations with zoning capabilities.
Diagnostic services and furnace repairs addressing issues from connector replacements to motherboard problems, available 24/7.
Installation and adjustment of zoning systems that control airflow to different home areas through damper tuning.
Assessment and adjustment of existing duct sizing and dampers to improve airflow without invasive renovation.
Technical programming of advanced thermostats like Gree communicating models to ensure full system integration.
Installation of UV light sanitizers and filter box systems to improve household air quality.