- Residential Work
- Commercial Work

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6 Years In Business
Company Details
- Verified Licenses
- Bilingual
Hours
- Mon: 8:00 AM - 5:00 PM
- Tue: 8:00 AM - 5:00 PM
- Wed: 8:00 AM - 5:00 PM
- Thu: 8:00 AM - 5:00 PM
- Fri: 8:00 AM - 5:00 PM
- Sat: Closed
- Sun: Closed
Achievements
Service Details
Areas of Expertise
- HVAC
Cost Information
- Free Estimates
- Warranty Offered
- Credit Cards Accepted
Reviews
Write a ReviewII rarely write reviews and I thought writing about 1HARO1 LLC is very important, as it is hard to find knowledgeable, hard working and genuinely honest companies dealing with HVAC systems is very hard to find. during the last 12 years of so, I contracted 1HARO1 LLC on three Single Family Home Projects (built brand-new single Family Homes) and a few remodels in South Bay. They consistently delivered top-notch workmanship and service. Always done a very high-quality work (installing Central Heating and Air Conditioning systems, Duct work, Proper zoning, etc). Ernesto Haro (owner) is very knowledgeable and quality conscious. Their pricing is reasonable and justified. Most sensitive (and very important) character of any services comp-any is not just getting the installation done, but providing services after that. Ernesto is always reachable, very responsive and jumps-in to address any issue (irrespective of the work involved- big or small) right-away. I don't think any other company or firm comes closer to 1HARO1 LLC. I recommended him to my colleagues and family friends, and always got an excellent feedback from all of them (no exceptions). I can confidently say I will engage him/1HARO1 LLC for any future projects, without any second thoughts.
Ernesto has done work at my home and rental properties for years now. He has always provided first rate service at a reasonable price. Heâ s punctual and professional. Reliably excellent work.
My name is Todd Fernandes. I am a Realtor for Intero Real Estate. Ernesto from 1Haro1 has probably installed 20 HVAC systems for me over the course of 5 or 6 years. They are quick to get the work started and always do a great job. My home owners have only had good things to say about their work performance.
I recently had the pleasure of working with 1 Haro 1 LLC for the installation of multiple HVAC systems across several projects, and I can confidently say they exceeded my expectations in every way. From the outset, their team demonstrated exceptional professionalism and expertise. As a general contractor, Iâ ve worked with numerous subcontractors, and itâ s refreshing to find a company that truly understands the importance of communication and collaboration. Ernesto Haro was always responsive, answering my questions promptly and addressing any concerns with a positive attitude. The installation process itself was impressive. Their technicians arrived on time, were well-prepared, and worked efficiently without sacrificing quality. I was particularly impressed by their attention to detailâ every installation was executed with precision, ensuring optimal performance and energy efficiency. They also took the time to explain the systems and answer any questions my team or I had, which made the transition seamless. What stood out the most was their commitment to staying on budget. In the construction industry, unexpected costs can often derail a project. However, Ernesto Haro provided a transparent quote upfront and stuck to it, with no hidden fees or last-minute surprises. This reliability made my job much easier and contributed to the overall success of our projects. Additionally, the quality of their work speaks for itself. The HVAC systems they installed have performed flawlessly, and my clients have been extremely satisfied. The improvements in air quality and energy efficiency were noticeable right away, further solidifying my trust in their expertise. Overall, I highly recommend 1 Haro 1 LLC to anyone in need of HVAC services. Their combination of great service, speed, and adherence to budget makes them a standout choice in the industry. I look forward to continuing our partnership on future projects!
prompt, professional, personable, reasonable and always available to help regardless of the day or the issue. i recommend ernesto and his group to all friends, and use him for our own projects, residential and commercial. can't go wrong bu choosing these guys to handle your project. giuseppe
Ernesto is a smart and extremely conscientious worker.
They showed up on time and explained every step of the way. Had some issues and they responded very quickly. Even on a Sunday. They are wonderful.
Ernesto is very professional and flexible with availability. I highly recommend him. I recently had Ernesto check my filters and he showed me how to clean them and install them. No job is too small or too big for him. He is also very reasonable with his prices for the quality you receive. I am a house manager and I hired him where I am employed to change ac/heater filters and clean the ducts and Check the system to make sure everything is working correctly. Ernesto is my go to for ac/heater installations,repairs&maintenance. 5 star service and bilingual in spanish!
As a contractor I have used Hernesto several times, his crew are very professional, always on time and provide the highest quality of work.
Ernesto replaced AC and heater
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