Best HVAC Companies in California

Hensel Consulting Engineers delivers mechanical and plumbing design, Title 24 energy compliance, system assessments, and project management for architects, contractors, and homeowners. Since 2003 they have completed hundreds of mechanical projects, thousands of Title 24 reports, and managed budgets ranging from $5 K to $140 M, emphasizing on‑time, on‑budget delivery, transparent, professional.

A‑Class Heating & Air is a family‑owned Sacramento HVAC contractor offering AC repair, heating service, maintenance, ductless systems, and thermostat installation. Established in 2016, they hold CSLB License #1090886, provide urgent, no‑pressure service, free estimates, and focus exclusively on heating and cooling solutions for residential and commercial customers throughout region.

Belmont HVAC Pro provides HVAC repair services with NATE‑certified technicians, offering same‑day and 24‑hour emergency assistance. Their offerings include furnace and heating repair, AC system replacement, heat‑pump maintenance, new AC installations, thermostat and air‑handler work, indoor‑air‑quality solutions, and duct cleaning for residential customers throughout the region.

Iris Mechanical offers licensed, insured HVAC services across the Bay Area, including heat‑pump, ductwork, AC, and gas‑furnace installation, maintenance, and repair. Customers cite transparent estimates, same‑day repairs, 1‑3‑year warranties, and strong 5‑star ratings. Seasonal promos feature free solar attic fans, maintenance plans, and 0% financing for homeowners seeking energy efficiency.

HVAC Help provides clear, concise articles on heating, ventilation, and air‑conditioning systems, catering to both industry professionals and curious homeowners. The site features a blog, service overviews, and easy navigation, aiming to demystify HVAC operation and maintenance. Content is organized for quick reference and practical learning for beginners and pros.

HVAC All Seasons offers comprehensive HVAC services in the Bay Area, including AC, furnace, heat‑pump, thermostat, and indoor‑air‑quality installations. Their licensed technicians handle repairs, maintenance, and emergency calls for residential and small‑commercial properties. Clients note punctual, courteous staff and transparent pricing with a three‑month warranty and reliable service included today.

American HVAC offers 24/7 emergency repairs, fast service, and transparent pricing across the Bay Area. Their certified technicians handle installations, maintenance, and indoor‑air‑quality upgrades, backed by over 20 years’ experience. Customers praise clear communication, reliable estimates, and flexible service agreements that boost comfort and energy efficiency for homeowners and businesses.

Ontario Refrigeration marks 60 years of operation, offering HVAC, refrigeration, and automation services across the western United States. The site showcases a portfolio of commercial projects, outlines maintenance and control solutions, and highlights a network of twelve regional offices. Emphasis is placed on energy‑cost management and technical expertise for clients.

FlowMD Aesthetic Clinic blends Asian aesthetic expertise with technologies such as Thermage, Ultherapy, PicoSure, and Sciton BBL. Led by Dr. Cong Ivy Ran, it offers Asian blepharoplasty, rhinoplasty, chin augmentation, facelifts, Botox, fillers, and skin rejuvenation for all Fitzpatrick types. Patient reviews note personalized care, professional staff, and clear results.

Finest Heating & Air offers residential and commercial HVAC installation, repair, and maintenance, including AC, heat pumps, furnaces, ductless mini‑splits, and attic insulation. They provide indoor‑air‑quality testing, financing options, and rebate assistance. Licensed, bonded, insured technicians receive positive Google reviews for prompt, transparent service across the Bay Area market region.

Global Heating and Cooling offers a range of residential HVAC services, including AC repair, furnace installation, heat‑pump maintenance, ductless mini‑split setups, and indoor‑air‑quality upgrades. Their team provides licensed, insured technicians, routine maintenance plans, and transparent pricing, aiming to improve system efficiency and homeowner comfort through timely service and detailed inspections.

Residential Heating & Air Conditioning provides heating, cooling, and home‑performance services across the Santa Clara Valley. Established in 1995, the women‑owned firm emphasizes building‑science design, energy‑efficiency upgrades, and indoor‑air‑quality solutions. Clients note reliable installations, pricing, and responsive maintenance, while the company holds NATE, BBB, and Angie's List recognitions, certifications, and awards.