While San Jose’s sunny days can quickly heat up your home, its mild winters still call for reliable warmth. With microclimates scattered across local neighborhoods from the foothills of Alum Rock to the flatlands of Santa Clara, no two homes experience comfort challenges the same way. This is precisely why the team at Sandium Heating & Air Conditioning Experts has dedicated ourselves to being the go-to solution for any HVAC concern.
Since 2001, Sandium has delivered high-performance HVAC services in San Jose, CA, with a focus on precision, innovation, and long-term energy savings. Our mission isn’t to simply fix a surface-level problem or install a new system. Instead, we take a whole-home approach backed by certified engineering expertise, advanced technology, and factory-trained technicians. Whether you’re upgrading to a heat pump in the Dry Creek neighborhood or troubleshooting inconsistent airflow in Evergreen, we tailor solutions to your home, climate, and goals.
Though winters are relatively mild in the Valley of Heart’s Delight, temperatures can dip into the 40s at night. At Sandium, we install and service gas furnaces, electric heat pumps, and hybrid systems to make sure every home has reliable, efficient heating. We also specialize in full system replacements and electrification retrofits, helping homeowners transition to all-electric heat while keeping utility bills under control.
San Jose summers may be dry, but they’re not mild. With average July highs reaching the upper 80s and many homes built before central air was standard, efficient cooling is critical. Our services include high-SEER AC installations, smart thermostat integration, ductless mini-splits, and seasonal tune-ups designed for our city’s unique climate zones.
With San Jose’s dry season often triggering high pollen, wildfire smoke, and dust, maintaining healthy indoor air is more important than ever. Our IAQ services include whole-home filtration, humidity control, UV light purification, and duct cleaning to promote a healthier living space. We’ll help you breathe easier year-round by identifying the right combination of solutions for your home’s unique air quality needs.
Sandium stands out as a leading HVAC company in San Jose, CA, because of our engineering-first mindset. Our team includes licensed professionals with C-20, C-2, and General Building Contractor certifications. Every system we design is carefully calculated for your square footage, insulation, and zoning needs, using the latest load calculation tools and performance data.
With over 20 years of experience across the Bay Area, we’ve worked with every type of system and architectural style San Jose has to offer, from historic Japantown bungalows to modern Willow Glen townhomes. Our 4.9-star Google rating speaks to our track record of delivering results that last.
We offer everything from system design and installation to ductwork, insulation, air sealing, and indoor air quality upgrades. Our team specializes in energy-efficient, all-electric heat pump systems and smart home integration, helping San Jose homeowners reduce their carbon footprint while staying comfortable year-round.
As a proud member of the P1 Service Group, we bring the best of both worlds: local service with national backing. That means stronger warranties, more reliable parts availability, and access to exclusive promotional offers.
We’re proud to serve homeowners across San Jose and the greater Silicon Valley region. Whether it’s a solar-ready heat pump in Saratoga, air balancing in Mountain View, or a full HVAC redesign in Los Altos Hills, we bring deep local knowledge to every job site.
From legacy homes to energy-efficient new builds, Sandium delivers smarter, cleaner, and more reliable HVAC services in San Jose, CA. We offer free estimates, second opinions, diagnostic credits, flexible financing through Goodleap, and exclusive rebates for qualifying systems.
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