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5.0 from 6 Google reviews · Sep 30
CALCOAST HVAC L.L.C. proudly serves San Marcos, CA with reliable and professional HVAC services for residential and commercial customers. We specialize in heating, air conditioning, and ventilation system installation, repair, replacement, and routine maintenance. Our experienced technicians focus on accurate diagnostics, energy-efficient solutions, and quality workmanship to keep your indoor environment comfortable year-round. Whether you need emergency repairs, seasonal tune-ups, or a complete system upgrade, we deliver prompt service, honest recommendations, and dependable results. At CALCOAST HVAC L.L.C., comfort, efficiency, and long-term system performance are always our top priorities.
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Google · Sep 30, 2026
Newest review Jul 10, 2026 · 0 reviews in the last 3 months (as of Oct 10, 2026)
Newest reviews on GoogleWord for word · read Oct 10, 2026
Our AC installation was completed professionally and on schedule. The installation team worked efficiently, protected our home, and explained the operation of the new system. The unit cools quickly and quietly. We couldn't be happier with the quality of the installation.
Thanks for sharing this! Glad the online booking made things easy and that our technician's thorough, detailed work checked out perfectly. Thanks for trusting us with it!
.AC not cooling properly is a frustrating situation , but it was resolved quickly and cleanly. The technician inspected the system thoroughly, explained the repair clearly, and had cool air restored within the same visit. Professional service, quality work, and excellent customer care made this a very positive experience overall.
Thank you for your wonderful review! We're glad we could get your AC cooling properly again and restore your comfort during the same visit. Our team takes pride in providing thorough inspections, clear communication, and quality HVAC repairs that homeowners can trust. We truly appreciate your kind words about our professionalism and customer care. Thank you for choosing us, and please don't hesitate to reach out if you ever need AC repair, maintenance, or any other HVAC services in the future!
Since the HVAC service, the air conditioning bill has dropped and the system performs better than it has in a while. The technician made smart adjustments and explained how to keep things running efficiently going forward — no vague advice, just genuinely helpful guidance. The improvement in both comfort and energy savings speaks for itself.
Thank you for your thoughtful review! We're delighted to hear that our HVAC service improved your system's performance while helping lower your air conditioning costs. Our technicians take pride in providing practical solutions and clear, honest guidance to keep your HVAC system running efficiently for the long term. It's wonderful to know you're enjoying greater comfort and energy savings. We truly appreciate your trust and look forward to helping you with any future heating and cooling needs!
New AC installations can feel overwhelming, but this one didn't. The team showed up on time, worked neatly, and walked us through how the system operates so we weren't left guessing. Everything was handled with care, and the results speak for themselves , the house cools down faster and more evenly than it ever did before. Professional, respectful, and genuinely well done.
Thank you for sharing your experience! We’re glad your new AC installation went so smoothly and that our team could make the process stress-free from start to finish. It’s great to hear the technicians arrived on time, worked cleanly and carefully, and took the time to walk you through how to operate your new system. We’re especially happy the results are making a real difference in your home comfort with faster, more even cooling. We truly appreciate your trust and kind words!
I have used the internet to book my heater service and the service was good. His work was deep, meticulous and detailed and it astonished me. After that he checked that everything was fine and the system operated correctly and all functions were working well.
Thank you for your feedback! We are glad our technician provided such meticulous heater service. Our team strives to ensure every system operates perfectly
The situation with a dirty filter and weak airflow was identified thanks to a heating system check. Both issues were resolved right away. The heater is working with more power and is energy-saving.
Thank you for your review! We’re glad the system check resolved the airflow and filter issues, helping your heater run stronger and more efficiently
“Can you share a recent job like mine and a reference I can contact?”
Draft a messageReading prompts are CSDP guidance.
Google Maps · Sep 30, 2026 · 8 photos on the listing.
Original Google source ↗How ratings are listedAsk for the license number, then look it up on the CSLB site.
No CSLB record matched yet.Ask for the license number. The bond is listed on the CSLB record.
No CSLB record matched yet.Ask for the license number. Workers’ comp is listed on the CSLB record.
No CSLB record matched yet.CSDP doesn’t read liability insurance. Ask the business for a current certificate that covers your job.
A license record isn’t an endorsement.
Google Business Profile · Sep 30, 2026
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