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Claim This BusinessRGN Heating & Cooling operates from San Jose and serves the greater Santa Clara region, including nearby Santa Clara proper. With a perfect 5.0-star average across 9 client reviews, the company has built a reputation for responsive residential and light commercial HVAC work. The team handles maintenance, repairs, and full system replacements for both forced-air and heat-pump systems, and they maintain Saturday availability for homeowners who cannot pause their weekday schedules.
What distinguishes RGN from neighboring contractors is their willingness to recommend solutions others skip. In at least one documented case, Ricardo suggested a mini-split heat pump upgrade over a standard replacement, yielding quieter operation and zoned climate control. The company also tackled a commercial rooftop unit that three prior contractors could not diagnose, relocating an intake vent to restore proper cooling. Their service menu spans new installations, corrective repairs, and system upgrades, though the website does not disclose specific brand partnerships or guarantee terms.
The named technician across multiple reviews is Ricardo, who arrived same-day during heating emergencies, explained repair options clearly, and provided up-front pricing. One reviewer noted Ricardo fixed an office cooling problem that three previous companies misdiagnosed, calling him honest and technically skilled. Another client mentioned the team installed a Nest smart thermostat and corrected unrelated electrical wiring during a single visit.
Eight of nine reviewers award 5 stars, with three specifically citing Ricardo by name and praising his technical diagnosis. Multiple reviewers contrast RGN's honesty against prior contractors who either misdiagnosed issues or proposed unnecessary replacements. No negative reviews appear in the supplied sample.
Furnace and heat pump diagnostics, tune-ups, and emergency repairs. Services include same-day response for heating failures.
Air conditioning diagnostics, refrigerant service, and preventive maintenance for residential and light commercial systems.
Full HVAC system replacements including new equipment selection, demolition of old units, and permitting coordination.
ductless mini-split installations offering zoned climate control, recommended for efficiency and quiet operation.
Large rooftop unit repairs. At least one documented case resolved a chronic cooling failure other contractors could not fix.
WiFi thermostat installation including Nest and other smart platforms, connected to new or existing systems.
ventilation assessment and recommendations, though specific IAQ products are not listed on the website.