Marathon Plumbing, Heating and AC Repair is a home comfort provider based in Anaheim, CA, serving the greater Los Angeles, Riverside, and Orange Counties. The company offers a range of services including air conditioning and furnace repair, installation of HVAC systems, and indoor air quality improvements. Marathon specializes in installing energy-efficient and smart-home heating and cooling systems, along with comprehensive plumbing solutions. Established in 1990, Marathon has over three decades of experience in the industry.

Southwest HVAC is an air conditioning and heating service provider based in Los Angeles, CA. Founded in 2007, the company offers AC repair, furnace repair, and HVAC installation services. They serve both Los Angeles and Orange County, providing equipment, installation, and maintenance through a network of manufacturers. Southwest HVAC is known for handling complex installations largely in-house and employs qualified technicians to ensure quality work.

All Heart Heating, Cooling & Plumbing is a family-owned HVAC company serving Santa Clarita, CA, and surrounding areas including Lancaster and Palmdale. With over two decades of experience, they provide a range of services such as air conditioning, furnace, boiler, and heat pump repair and installation, along with HVAC tune-ups. Their team uses modern tools and techniques to handle various heating and cooling needs, ensuring comfortable living and working environments.

Diamond Air Services is an HVAC company serving Los Angeles, CA, and nearby areas including Ontario, Irvine, and Arcadia. They provide a range of services such as air conditioning, furnace, and heat pump repair and installation, HVAC tune-ups, duct cleaning, thermostat installation, and indoor air quality solutions. With over 20 years of experience, Diamond Air Services focuses on creating comfortable and energy-efficient environments for both residential and commercial customers. Their technicians are trained to maintain ventilation systems and offer clear explanations of repairs and installations to help customers make informed decisions.

Santa Clarita Custom Air, Inc. is a family-owned HVAC contractor serving Santa Clarita, CA, and nearby areas since 1990. They provide a full range of heating and air conditioning services including installation, repair, and maintenance of air conditioners, furnaces, heat pumps, thermostats, and air filtration systems. As a licensed Carrier dealer, they specialize in designing and servicing Carrier HVAC systems. Their team includes NATE-certified technicians with extensive training and experience. The company offers after-hours emergency service on weekends to support their customers' needs.

Next Level Heating and Cooling provides residential and commercial HVAC services in Long Beach, CA. Their skilled technicians handle heating, cooling, indoor air quality, duct cleaning, and thermostat installation. They offer comprehensive solutions including furnace, heat pump, and mini-split installation and repair, along with air purifiers, UV lights, and zoning systems to optimize indoor comfort. The company emphasizes minimizing downtime for businesses and delivers tailored HVAC services with a focus on quality and reliability.

Lambert Heating and Air Conditioning is a family-owned HVAC company serving Los Angeles, CA, with over 40 years of experience. They provide a range of services including air conditioning and furnace installation, repair, and maintenance. The company emphasizes reliable heating and cooling system replacements and offers upfront pricing. Their technicians are background-checked and respectful of customers' homes, ensuring quality and trustworthy service.

Airis Heating and Cooling provides HVAC installation, repair, and tune-up services in Santa Clarita, CA. They specialize in air conditioning, furnace, and heat pump systems, serving the greater Southern California region including Los Angeles County areas such as Simi Valley, Antelope Valley, and San Fernando Valley. Their capabilities include comprehensive HVAC system installation and maintenance.

Evans Heating & Air is an HVAC company serving Los Angeles, CA, and the surrounding San Fernando Valley areas including Glendale, Burbank, and Pasadena. They provide a range of services such as air conditioning, heating, heat pump, ductless system installation and repair, as well as indoor air quality solutions. Established in 2016, the company handles residential, light commercial, multi-family, and commercial HVAC needs. One of their capabilities includes refrigerant management for air conditioning systems.

5 Star Air Duct Cleaning is a duct cleaning and indoor air quality service provider based in Los Angeles, CA. They offer a range of services including air duct cleaning, duct system evaluation, installation, removal, dryer vent cleaning and replacement, and furnace cleaning. The company uses high-efficiency vacuums and specialized brushes to thoroughly clean ductwork and improve air quality. With a long history of serving clients in Orange County and beyond, 5 Star Air Duct Cleaning employs licensed and trained technicians to ensure complete and tidy work. They are available 24/7, including weekends and holidays, to assist with urgent needs.