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Claim This BusinessAbout Subzero HVAC/R
Subzero HVAC/R is a Riverside-based air conditioning and refrigeration contractor serving the Inland Empire from San Bernardino south to Temecula and west to Rancho Cucamonga. With a perfect 5-star rating across 12 verified reviews, the team handles both residential comfort systems and commercial refrigeration equipment, from new installations to walk-in cooler repairs. The company emphasizes honest pricing, transparent communication, and long-term customer relationships over one-time transactions.
The team prioritizes fast turnaround without sacrificing quality. Smart thermostat installations and eco-friendly refrigerants feature in upgrade proposals, giving homeowners a path to lower utility bills alongside improved comfort. No two projects receive identical treatment; each system assessment produces a custom design intended to maximize performance and extend equipment lifespan. Certified technicians stay current with evolving HVAC and refrigeration technologies, ensuring residential and light commercial clients receive current-code compliance and efficient outcomes.
Multiple reviewers specifically name technician Adrian for same-day service during urgent breakdowns. Reina D. credits Adrian with restoring a stubborn heating system in November 2024, preventing an elderly family member from facing a cold Inland Empire winter when other contractors could not resolve the problem. Carl Cabello notes Adrian walked him through every diagnostic finding before starting work, a practice that earned high marks for transparency and professionalism. Blanca Gomez received a same-day repair visit after reaching out on short notice, and Albert Hercules describes a fast completion with full system verification before sign-off.
What Customers Say
All seven reviewers award five stars, with four explicitly noting same-day or same-week service availability. Five customers call out technician Adrian by name for professionalism, clear explanations, and honest assessments. Lizeth Sanchez is the only reviewer to contrast pricing against competitors, placing Subzero HVAC/R as the most affordable among four bid comparisons.
Services
Residential HVAC Installation & Replacement
New central air and heating system installations for single-family homes, including load calculations and equipment sizing to match each residence.
AC and Heating Repair
Diagnostic troubleshooting and component-level repairs for aging or failed HVAC systems, with same-day service noted across multiple reviews.
Commercial Refrigeration Service
Walk-in cooler maintenance and repair for restaurants, warehouses, and food-service operations throughout the Inland Empire.
Preventive Maintenance Plans
Seasonal tune-ups and filter replacements designed to extend equipment life and reduce summer and winter operating costs.
Energy-Efficient System Upgrades
Smart thermostat installations and eco-friendly refrigerant upgrades that target lower utility bills without compromising indoor comfort.
Custom HVAC Design
Tailored system design and sizing for renovations and new construction, assessing each space to maximize performance and longevity.