A & L HVAC Sierra Madre provides professional heating and cooling services for customers throughout Monrovia, CA. Whether you need emergency AC repair, a new furnace installation, annual maintenance, or an indoor air quality upgrade, our certified technicians respond quickly and complete most jobs on the first visit.
Our service vehicles are stocked with common parts for all major HVAC brands so we can resolve most heating and cooling issues without a second trip. We give you a clear written estimate before starting any work and never charge surprise fees.
Our full range of services is available throughout Monrovia: AC repair and installation, furnace and heat pump repair and installation, annual HVAC maintenance, duct cleaning, thermostat installation, zone system design, indoor air quality solutions, UV air sanitizers, and commercial HVAC service.
We are fully licensed and insured in California and carry all necessary permits for HVAC work throughout Los Angeles County. Equipment installations come with full manufacturer warranties plus our own labor warranty. First-time customers receive 10% off any service.
Call us for a free estimate - (626) 244-2038

Yes, A & L HVAC Sierra Madre serves Monrovia and the surrounding San Gabriel Valley. Call (626) 244-2038 to schedule service.
Most AC repairs in Monrovia take 1 to 3 hours. We carry common parts on our trucks so most jobs are completed on the first visit.
Cost depends on the job. We give you a clear estimate before starting any work. First-time customers in Monrovia receive 10% off all services.
Yes, we install central AC systems, heat pumps, and ductless mini-splits throughout Monrovia. Call (626) 244-2038 for a free in-home estimate.
In most cases yes. We stock common furnace parts and offer same-day service for Monrovia residents. Call (626) 244-2038 early for the best availability.
Yes, our annual maintenance plans cover Monrovia homeowners with scheduled tune-ups, priority service, and repair discounts. Call (626) 244-2038 for details.