Trustworthy Service, Dependable Comfort, and Peace of Mind
Our Story
At A-1 Guaranteed, we are dedicated to providing top-notch HVAC services to our valued customers in Solana, Napa, and Contra Costa counties, as well as the entire Bay Area. As a family-owned and operated business, we take pride in our commitment to delivering exceptional service, quality, and unparalleled customer satisfaction. With over 24 years of experience, we have established a reputation for being the go-to provider for heating and air conditioning repairs, maintenance, and installations.
Our Services
At A-1 Guaranteed, we offer a comprehensive range of HVAC services designed to cater to your unique needs. Our services include:
- Heating and Air Conditioning Repair and Maintenance: Our expert technicians are trained to diagnose and repair any issues with your heating and air conditioning systems. We also offer regular maintenance services to ensure your systems run efficiently and prolong their lifespan.
- Tankless Water Heaters: We install and maintain tankless water heaters, providing you with a reliable and efficient way to heat your water.
- Insulation: Our team of experts insulates your home to keep it warm in the winter and cool in the summer, reducing energy consumption and costs.
- Duct Replacement: We replace and repair ductwork to ensure your heating and air conditioning systems operate at optimal levels.
Why Choose Us?
At A-1 Guaranteed, we are proud to be:
- Voted Best Heating/Cooling Company for 16 years: Our commitment to exceptional service and quality has earned us this prestigious award.
- Energy Upgrade CA Participating Contractor: We are honored to be part of this program, dedicated to promoting energy-efficient solutions.
- Factory Trained Installers and Technicians: Our team of experts undergoes rigorous training to ensure they are equipped to handle any HVAC-related issues.
- North American Technician Excellence (NATE) Certified: We are committed to maintaining the highest standards of professionalism and expertise.
- Diamond Certified: Our exceptional service and quality have earned us this prestigious certification.
Meet the Team
At A-1 Guaranteed, we pride ourselves on our team of experienced professionals who are dedicated to delivering unparalleled service and quality. Each member of our team is fully background checked to ensure your safety and comfort.
Recent News
In our blog, we share the latest news and updates on HVAC innovations, sustainable solutions, and expert tips on maintaining your heating and air conditioning systems. Check out our blog for valuable insights and advice from industry experts.
Get a Quote Today
At A-1 Guaranteed, we offer a 100% money-back guarantee on all our services. Contact us today to schedule an appointment and experience the A-1 Guaranteed difference.
Excellent Customer Service and Professionalism
The customer reviews highlight the exceptional service provided by A-1 Guaranteed Heating & Air. The technicians, including Jorge, Tyler, and Brian, are praised for their professionalism, thoroughness, and courteous nature. They take the time to explain the issues and solutions to the customers, making sure they understand the work being done.
Timely and Efficient Service
The reviews also emphasize the promptness and efficiency of the service. The technicians arrive on time, and the office staff provides reminders and schedules appointments efficiently. The customers appreciate the attention to detail and the thoroughness of the work done.
Trustworthy and Honest Company
The customers trust A-1 Guaranteed Heating & Air to provide honest and reliable service. They appreciate the company's commitment to excellence and the fact that they don't try to sell unnecessary services.

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