Promax Service Group

Promax Service Group has earned a 5-star rating across all 66 customer reviews in Santa Clara, California. The contractor specializes in heat-pump-based central HVAC installations, water heater replacements, and furnace repairs for residential homeowners. Multiple reviewers described a team that works closely with customers throughout each project, from initial system design through final inspection. Howard Chong noted the crew helped him navigate a utility rebate application for a Navien heat pump water heater, while Vikram Saxena said his household received multiple system options before committing to a Mitsubishi heat pump setup. The crew operates Monday through Friday from 8 AM to 8 PM and on weekends from 9 AM to 5 PM, giving homeowners Saturday and Sunday access that many competing firms in the area do not offer.

Reviewers consistently cited Promax for its ability to work around existing home structures rather than forcing standard layouts. Vikram Saxena described a project that involved rerouting ductwork from a crawlspace into the attic while installing a Mitsubishi heat pump central AC and heating system, a modification that required careful planning to maintain conditioned airflow in an older home. Mary Nice said the crew troubleshot her furnace issue in stages, applying what she had already paid toward the cost of additional parts when the first repair did not resolve the problem. The team also submitted utility rebate paperwork on behalf of Howard Chong, managing the paperwork process so he did not have to navigate it alone.

Two customers specifically named Slava as the lead technician for their projects. Vikram Saxena credited Slava with patiently presenting multiple ductless heat pump configurations, incorporating family feedback, and answering questions throughout a weeks-long design phase before a single unit was ordered. Mary Nice said she spoke directly with Nick on multiple occasions as the crew diagnosed and repaired her furnace, with each call including a name and a direct phone number. When the first replacement part did not fix the problem, Nick and the crew applied the original payment toward the cost of the next repair. Max, Anna, and Kostas also received direct recognition from Mary Nice for standing behind their work long after the installation was complete.