HVAC and Solar Services Serving All of Solano, Napa & Contra Costa Counties, and the Bay Area. A-1 Guaranteed is a family-owned and operated business that serves HVAC and Solar Services Serving All Of Solano, Napa and Contra Costa Counties, Fairfield, Vacaville, and the Bay Area with Heating and Air Conditioning, Solar, Tankless Water Heaters, Windows, Insulation and/ or Duct Replacement needs.
As one of the premier service businesses in the area, we have helped thousands of satisfied, loyal customers improve the energy efficiency of their homes and offices. We are available Monday through Friday and by appointment on Saturday. Our fast and efficient attention to your needs will prove our dedication to our customers is the foundation of our business.
Our professional staff is knowledgeable and looks after your best interests when it comes to your environmental comfort needs. We are an Energy Upgrade CA participating contractor. We are honored that our customers consider us #1 in providing trustworthy service and dependable comfort.
As one of the premier service businesses in the area, we have helped thousands of satisfied, loyal customers improve the energy efficiency of their homes and offices. We are available Monday through Friday and by appointment on Saturday. Our fast and efficient attention to your needs will prove our dedication to our customers is the foundation of our business.
Our professional staff is knowledgeable and looks after your best interests when it comes to your environmental comfort needs. We are an Energy Upgrade CA participating contractor. We are honored that our customers consider us #1 in providing trustworthy service and dependable comfort.
Services
Since A-1 Guaranteed began as a business, we have grown to be one of the most trusted heating and air conditioning service businesses in the areas of Solano, Napa, and Contra Costa Counties. We have gained experience and knowledge from putting our name on thousands of installations and repairs, and our customers gain from our working knowledge of the latest technology in heating and air conditioning.
Meet the team at A-1 Guaranteed Heating & Air. We have been providing HVAC installation and heating and air conditioning repair in the bay area for over 20 years and have become one of the best because of our dedicated and hardworking team of heating and air conditioning professionals. We're all pleased to meet you.
A-1 Guaranteed is recognized for our outstanding dedication to our customers and our loyalty to professionalism in the HVAC industry. We offer services such as installation, replacement, repair, maintenance, and troubleshooting of furnaces, heat pumps, baseboard heaters, radiators, boilers, and other types of heating.
A-1 Guaranteed is your #1 resource for air conditioner tune up and/OR furnace tune up. Our comprehensive tune-ups handle every aspect of your air conditioning and/OR furnace units, all for just $159.00. Lightly clean debris from in/around unit (significant accumulation requires full maintenance). Light cleaning on exterior & interior of unit (detailed cleaning required full maintenance).
If you are looking for ways to improve the energy efficiency of your home or office, integrating solar power could be a great option. A-1 Guaranteed is proud to offer solar power solutions to residential and commercial customers throughout the Bay Area. Right now is the best time to start taking advantage of the benefits that solar power systems provide.
Reviews (16)
Noel S.
Jan 12, 2022
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Yvette A.
Dec 28, 2021
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Annette T.
Dec 16, 2021
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We have been using A-1 Guaranteed Heating and air now for quite some time. They actually installed our heating/air conditioning unit about 10 years ago and we have a contract with them. They have always been very considerate and timely. I have dogs that I need to lock up when they come so the technician always calls ahead. When we need service they have always gotten to us very quickly. I definitely recommend them.
Francesca R.
Dec 11, 2021
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A-1 installed our new furnace and air conditioner last Spring. This review is way overdue but by now we've gone through both hot and cold seasons.
Kirk was our "Senior Comfort Advisor" and point person. He was very responsive--to the point of checking his e-mail when he was on vacation and making sure our myriad questions were answered fully. His listened well and his bid contained everything we wanted and no more. Our house was built in the 30's and still has its original air ducts. In addition, there was asbestos in the system. Different HVAC companies we received bids
Kirk was our "Senior Comfort Advisor" and point person. He was very responsive--to the point of checking his e-mail when he was on vacation and making sure our myriad questions were answered fully. His listened well and his bid contained everything we wanted and no more. Our house was built in the 30's and still has its original air ducts. In addition, there was asbestos in the system. Different HVAC companies we received bids
Lisa K.
Dec 11, 2021
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Diane T.
Nov 26, 2021
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Unbeknownst to me the pilot light on my water tank went out the day before Thanksgiving. I called A-1 early Thanksgiving morning before 7am as I am a platinum member and left a message. I was called back less than 10 minutes later and their on call service rep was at my house less than 45 minutes later to put the pilot light on. I signed up 2 1/2 years ago for their $40 a month service post getting a new water tank from A-1. Definitely worth the money to get same day service on a holiday! Total cost today - $3!
Anthony U.
Nov 16, 2021
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F. C.
Nov 16, 2021
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Jason Medwid
Oct 30, 2021
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Erik just stopped by to inspect my furnace and duct work as recommended by home inspector during purchase process. Erik was timely and professional. Explained everything he was doing and what he recommended and why.
Will use them to do recommend repair work, which came in just under what inspector ballparked.
Will use them to do recommend repair work, which came in just under what inspector ballparked.
Gail Bloxsom
Oct 22, 2021
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Stan & Julie Crowe
Oct 17, 2021
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Peter Schwab
Sep 26, 2021
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Ever aspect of my experience with this company, from the initial estimate, my contacts with the main office personnel, the installation itself, and the follow-up wireless control, for my new heat pump system was absolutely top notch. Matt, the project manager, was especially helpful, knowledgeable, and responsive throughout the entire process, and an absolute pleasure to work with. I would recommend this company without hesitation to anyone in the market for a new HVAC system.
Stephen Chang
Aug 01, 2021
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Positive: Professionalism, Punctuality, Quality, Responsiveness
July 20th 2021, Joe and his team of A1Guaranteed replaced our old central heating & installed new A/C system, including new fan, thermostat, duct & vent . Fantastic job! They were friendly & professional throughout the process, worked efficiently & did a great job cleaning up when the job was finished. Thank you very much!
Services: Install fan, Install thermostat, Install heating system, Install AC, Install ducts & vents
July 20th 2021, Joe and his team of A1Guaranteed replaced our old central heating & installed new A/C system, including new fan, thermostat, duct & vent . Fantastic job! They were friendly & professional throughout the process, worked efficiently & did a great job cleaning up when the job was finished. Thank you very much!
Services: Install fan, Install thermostat, Install heating system, Install AC, Install ducts & vents
Steve G.
Jun 26, 2021
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Arvin J.
Jun 12, 2021
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This is an updated review, Krissy personally reached out to me and set things right.
Even though I did not complete my service with A1 the owner made things right by providing me a 100% refund of what I gave A1 for the initial estimates.
Just based off the owners care for the customer I would recommend this business.
Even though I did not complete my service with A1 the owner made things right by providing me a 100% refund of what I gave A1 for the initial estimates.
Just based off the owners care for the customer I would recommend this business.
John R.
Jun 03, 2021
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We have been customers with A1 for over 35 years. Each job and upgrade they have completed for is is handled perfectly. One furnace had an odd vibration that just could not be locate. One day the installer shows up and says he has an idea what was causing vibration. He did his magic and found the problem, a simple fix was the answer.
Today Brian came by for the semi-annual checkup. He knows where everything is. No issues. Will see him in December.
A-1 is the best there is and they are a longtime local business that does a lot in the community.
Today Brian came by for the semi-annual checkup. He knows where everything is. No issues. Will see him in December.
A-1 is the best there is and they are a longtime local business that does a lot in the community.
