700+ Reviews
Heating & Air Conditioning Services in San Diego County
Family-owned Residential & Commercial HVAC Company
Trusted Since 2018
Trusted by San Diego County Homeowners
700+ Customer Reviews 
BBB 
Voted San Diego's Best HVAC Company 
East County Chamber 
Nextdoor 
Yelp Family-owned since 2018 · California Contractor License #1037227
HVAC Services for Every Season
Need your existing equipment fixed or considering a new system? Find the right Maximum Comfort service.
AC Repair
Diagnostics and repairs for central air conditioners, cooling problems, electrical faults, motors and more.
Explore AC Repair →AC Installation
Replace an aging AC or install a new cooling system. Free estimates for new equipment installations.
Explore AC Installation →Furnace Repair
Get help with ignition, blower, airflow, thermostat and other furnace-related problems.
Explore Furnace Repair →Furnace Installation
Explore furnace replacement and installation options with free installation estimates.
Explore Furnaces →Heat Pumps
Efficient electric heating and cooling systems for qualifying home installations and replacements.
Explore Heat Pumps →Mini-Splits
Ductless installation and maintenance. Repairs are limited to systems installed by our company.
Explore Mini-Splits →
Built on Hard Work. Driven by Helping People.
Maximum Comfort Heating & Air Conditioning was founded in 2018 by Chris Jaggi, a lifelong East San Diego County local. After graduating from Mountain Empire High School, Chris began working in insulation before finding his way into the HVAC industry, where he spent years gaining hands-on experience before starting his own company.
Maximum Comfort was ranked #1 in Forbes Home's 2024 list of the Best HVAC Contractors in San Diego.
Chris was also nominated for Housecall Pro's 2026 Trades 40 Under 40.
See Our Forbes Home Recognition →Today, Chris leads a team of 11 technicians, installers, and office staff serving homeowners throughout San Diego County. While Maximum Comfort has grown since its early days, his approach remains the same: do quality work, offer honest recommendations, and treat customers right.
See the Difference a New AC Installation Makes
HVAC replacement in La Jolla, CA
AFTER BEFORE Drag the slider to see before & after
Repair Your System or Explore a Replacement
Schedule a Diagnostic
Our standard HVAC diagnostic is $89, waived with a qualifying completed repair. Same-day appointments may be available depending on scheduling.
Get a Free Installation Estimate
Explore new AC, furnace, heat pump, and ductless options. Start online with preliminary pricing or request a free installation estimate.
Curious What a New HVAC System Might Cost?
Explore preliminary installation pricing online before scheduling an estimate. Compare available heating and cooling options at your own pace.
Final project pricing is determined after reviewing equipment and installation requirements.
Complete Heating & Cooling Support
Repairs and installations are only part of keeping your home comfortable.
HVAC Maintenance
Routine AC and heating maintenance, tune-ups, and service plan options.
Maintenance Plans →Ductwork & Airflow
Duct installation, modification, repair and sealing. We do not provide air duct cleaning at this time.
Ask About Ductwork →Thermostats & Controls
Thermostat repair, replacement and compatible smart WiFi thermostat installation.
Thermostat Services →Indoor Air Quality
UV lights, HVAC filtration and whole-home humidifier installation, service and repairs.
Ask About Air Quality →Air Handlers & Package Units
Repairs, replacements and installation for eligible heating and cooling equipment.
Discuss Your System →Light Commercial HVAC
Qualifying HVAC maintenance, repairs and installations for smaller commercial properties. We work on systems up to 25 tons
Commercial Inquiries →Meet the Team Behind the Work
Behind every service call and installation is a real local team.
Local People. A Team That Cares.
Our office staff, service technicians and installation crews work together to help customers get the service they need.
700+ Reviews. Real Customer Experiences.
From difficult AC problems to responsive service and professional installations, customers share their experiences with our team.
“Fair pricing, knowledgeable and friendly team, and they give great advice on how to prepare for future events with your AC unit. They also communicate with you every step of the way, and overall just a great company to deal with. Props to Elkan for his service. Would definitely call them again.”Wally E. Fair pricing & communication
“Very professional and polite. Arrives on time. Diagnosed the issue quickly and provided options for the fix. 100% satisfied.”Tom Shaffer Professional HVAC diagnostics
“Out of 4 previous ac companies… no one could fix our unit. The other companies wanted to charge in upwards of $10,000…. With no guarantees. Elkan fixed it for a FRACTION… was super knowledgeable and in good spirits. I definitely recommend this company!”Mark Taylor Challenging AC repair
“Of course my air conditioner decided to quit during the recent heat wave. I called Maximum Comfort Heating and Air Conditioning and they had a crew out here within two hours to diagnose the problem. It would take two days to get parts, so Chris showed up with a portable AC unit that kept our kitchen and living area at a comfortable temperature. Who else would give you that kind of service? Absolutely the best.”Dan Mueller Customer care during a heat wave
“We have used a lot of companies in the past, but have never had one as responsive to our needs as Maximum Comfort Alpine. They are affordable and do great work. If there is a problem, they will respond quickly to fix it. I highly recommend them.”Nancy Bramwell Alpine service & responsiveness
“I appreciate everything that this company offers: Their staff arrive on time. They’re friendly, efficient, professional and knowledgeable. They leave the work area neat and clean.”Elena Vega Professionalism & clean work
Two Local Service Locations. One Maximum Comfort.
With El Cajon and Alpine locations, our team serves homeowners across San Diego County, including qualifying foothill and backcountry communities.
El Cajon & Central East County
Serving El Cajon, La Mesa, Santee, Lakeside, Rancho San Diego, Spring Valley and neighboring communities.
Alpine & Eastern San Diego County
Serving Alpine and qualifying nearby communities, including Descanso, Pine Valley, Campo and the backcountry.
Availability varies by address, service and scheduling.
Heating & Cooling Questions
What HVAC services does Maximum Comfort offer?
We provide central AC and furnace repairs, installations, maintenance, ductwork, thermostats, indoor air quality products, heat pump installations, ductless systems and qualifying light commercial HVAC services.
How much does an HVAC diagnostic cost?
Our standard diagnostic costs $89 and is waived with a qualifying completed repair. Expedited appointments may have different rates. Call to confirm current availability.
Are new HVAC installation estimates free?
Yes. We provide free estimates for qualifying new AC, furnace, heat pump and mini-split installations. You can also explore preliminary pricing online.
Do you offer same-day HVAC appointments?
Same-day diagnostic appointments may be available depending on technician scheduling and location. Same-day repair completion depends on the issue and parts availability.
Do you repair ductless mini-splits?
We repair ductless mini-splits originally installed by Maximum Comfort. Maintenance may be available for systems installed by other companies.
Which parts of San Diego County do you serve?
Our El Cajon and Alpine locations serve San Diego County, including qualifying communities throughout East County and the backcountry. Contact us with your address to confirm availability.
Tell Us How We Can Help
Need a repair, maintenance appointment, or new HVAC installation estimate? Send our team a message using the form below.
Send us a Message
Send us your details and we’ll get back to you to schedule a time to talk.
Ready to Get Maximum Comfort?
Whether your system needs a repair, it's time for routine maintenance, or you're exploring new HVAC equipment, Maximum Comfort is ready to help.
Family-Owned Since 2018 · El Cajon & Alpine · CA Contractor License #1037227
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