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JM Air Conditioning and Heating is a professional HVAC contractor providing residential central air conditioning and heating services in Los Angeles and San Bernardino County. Our team of trained technicians offers a range of services, including new installation, upgrade or replacement, trouble shooting and repair, and routine maintenance. We strive to keep your equipment working properly and safely, and promise to provide exceptional service to our customers. Whether you need central air conditioning or heating repair, or a new system installation, we're here to help.