All Temperature Service, Inc. (ATS) is a commercial HVAC and plumbing contractor based in San Jose, CA. They provide a full range of services including installation, repair, and maintenance of HVAC systems such as air conditioning, furnaces, heat pumps, and boilers. ATS specializes in large-scale projects and retrofits, offering precise engineering and reliable system design for new constructions and existing facilities. With decades of experience, their unionized technicians deliver tailored HVAC and plumbing solutions across the San Francisco Bay Area.

ACME Boiler & Water Heating Company is a family-owned business based in San Jose, CA, specializing in boiler repair and installation. They provide services focused on maintaining and maximizing the efficiency of name-brand water heater systems, serving industries where boiler downtime can cause significant disruption, such as hospitals, schools, hotels, and restaurants. The company employs factory-certified technicians and offers expertise in routine maintenance and emergency repairs to help reduce costly shutdowns. With over 35 years of industry experience led by CEO Steve Ciari and a multi-generational team of technicians, ACME Boiler & Water Heating Company combines hands-on field knowledge with engineering and project management skills.

Sears Heating and Air Conditioning provides comprehensive HVAC repair and installation services in San Jose, CA. Their certified technicians handle a wide range of systems including furnaces, central air conditioners, heat pumps, boilers, and mini-splits. They offer accurate diagnostics, component replacement, and regular maintenance to ensure efficient operation. Sears has over 100 years of experience in home services and uses genuine manufacturer parts for repairs. They also provide same-day and next-day appointments for many services.