Qualtech Heating & Cooling is a family-owned and woman-owned HVAC company serving Oakland, CA, and the East Bay Area. They provide heating, cooling, indoor air quality services, duct cleaning, and HVAC installation and repair, including ductless A/C systems. With over 35 years of industry experience and service since 2007, Qualtech handles equipment from top manufacturers like Carrier. They offer emergency and same-day services, available 24/7 to support their customers' needs.

Building Efficiency, Inc. is a San Francisco-based contractor specializing in heat pump heating and cooling systems, insulation, and heat pump water heaters. They focus on whole-house energy upgrades and electrification to improve home comfort and reduce energy use. With over 15 years of experience, they have completed hundreds of home energy projects and handle installations with their in-house team. Building Efficiency also assists customers with navigating rebate programs to support energy-efficient upgrades.

Atlas Trillo Heating & Air Conditioning provides HVAC repair, installation, and maintenance services in San Jose, CA. They specialize in air conditioning and furnace repair and installation, as well as indoor air quality services. Their technicians are drug tested and background checked, and they offer emergency HVAC services with a satisfaction guarantee. Routine HVAC tune-ups are available to improve system efficiency and air quality. The company operates seven days a week to accommodate urgent needs.

Kenneth's Air Duct Cleaners provides air duct cleaning and indoor air quality services in San Francisco, CA. The company focuses on improving home air quality by removing dust, allergens, mold spores, pet dander, and other contaminants from air and dryer vents. Their services also help reduce fire risks and support HVAC system efficiency. Kenneth's Air Duct Cleaners addresses a wide range of indoor air pollutants including cigarette smoke residues, construction debris, asbestos fibers, radon, and volatile organic compounds. This comprehensive approach contributes to healthier indoor environments and better airflow throughout the home.

Fusion HVAC & Refrigeration Repair Corp is an HVAC and refrigeration service provider based in Fremont, CA. They offer repair and installation services for air conditioners, furnaces, heat pumps, mini split systems, and duct cleaning. The company also handles residential and commercial refrigeration repairs, including wine coolers, freezers, ice machines, and commercial kitchen appliances. Fusion HVAC & Refrigeration Repair Corp employs EPA-certified technicians and provides warranties on labor and parts for their HVAC and refrigeration work. They operate seven days a week with regular business hours.

Harry Clark Plumbing and Heating Inc is an HVAC and plumbing service provider located in San Francisco, CA. The company offers a range of services including air conditioning, furnace, heat pump, boiler repair and installation, as well as mini split and geothermal heat pump installation. With a history dating back to the 1940s, the business has evolved through family ownership and continues to operate with a focus on local service. The company is known for maintaining a strong presence in the Oakland and Berkeley area, operating two separate entities for plumbing and heating/air conditioning services.

Attic Repair Guys is a home wellness service provider located in Fremont, CA, specializing in eco-friendly insulation, air conditioning, and HVAC services. They offer a range of solutions including insulation installation, air duct replacement, crawl space cleaning, attic cleanup, and rodent proofing to improve indoor air quality and energy efficiency. Their team focuses on enhancing home comfort and health through quality workmanship and environmentally conscious practices. Attic Repair Guys serves the Fremont area with a commitment to customer satisfaction and home wellness.

Upgrade Home Services is an HVAC company serving San Jose, CA, and nearby areas. Since 2002, they have provided air conditioning repair, installation, and maintenance services to help homeowners maintain comfortable indoor temperatures. Their technicians handle a range of HVAC needs, including tune-ups and water heater care, with a focus on durable repairs using quality parts. The company offers 24/7 availability for urgent AC repairs and installations.

Albert Nahman Plumbing, Heating, and Cooling has been providing plumbing, heating, and cooling services in San Francisco, CA since 1981. The company offers a range of HVAC services including air conditioning, furnace, heat pump, boiler, and mini split installation and repair, as well as HVAC tune-ups. With over four decades of experience, they focus on maintaining home comfort and system efficiency for their customers in the Bay Area.

Comfort Finish Air Duct Care is a duct cleaning company based in San Francisco, CA, specializing in improving indoor air quality. They offer comprehensive air duct and dryer vent cleaning services designed to reduce allergens, dust, mold spores, and other contaminants that affect home air safety and comfort. Their approach helps lower fire hazards and supports healthier living environments by addressing common indoor pollutants such as pet dander, pollen, and cigarette smoke. Comfort Finish Air Duct Care emphasizes regular maintenance to enhance HVAC system efficiency and longevity, contributing to better airflow and reduced energy use.