Meet the team at A-1 Guaranteed Heating & Air. We have been providing HVAC installation and 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.


Matt has been in the HVAC trade with A-1 Guaranteed since 2005. He has grown up in this trade with a father, brother and uncles before him. He is NATE certified in Heat Install, AC Install & Air Distribution & BPI Certified. He has been employed with A-1 Guaranteed since 2005. Matt is married with 3 young children.

Matt is a lead installer with service experience. He loves solving people’s heating & AC problems and would be glad to help you solve yours!


Casey has been in the HVAC trade for over 15 years. He began working in the trade by working at his uncle’s company. He worked there for 13 years before he began his employment with A-1 Guaranteed in 2009. He has certifications in Diamondback, Track Piping and Universal Refrigerants and is BPI Certified. Casey has completed Title 24 Duct Installation, Standards, & Diagnostic testing. He has a teenage daughter. Casey is a Lead Installer.

Kasey joined the family business with very little experience in the HVAC trade or even administrative duties. She has grown up in the business since she was 5 years old. She started out putting stickers and stamps on envelopes as a child and worked as an Admin Assistant while she was a student. Officially she began working for A-1 Guaranteed in 2005. Kasey was the inspiration for A-1 Guaranteed when her dad had to miss one of her birthday parties because he wasn’t able to get the weekend off, prompting him to start his own business. She graduated with Honors with an Associates in Business while working with the company.

Kasey is our Special Projects Manager. She has been solely responsible for setting up the company with new scheduling programs and multiple trainings. She also is the creator of our newsletters and handles all of the IT issues and software programs.


Joe has been in the HVAC trade for more than 19 years. He attended and graduated from Sequoia Institute.He is a BPI Certified Building Analyst Professional and is Nate Certified in AC Install, Gas Furnace Service and Gas Furnace Install. He is a type II technician certified in Diamondback Installation & is a Certified Heat Exchanger Expert. In addition to these certifications, he is also a Checkme! Program Certified Technician for AC Diagnostic Testing & Duct Diagnostic Testing. Joe is our longest employed co-worker beginning his partnership with A-1 Guaranteed in 2001. Joe is married with one daughter.Joe is the Install Manager who also works as a Service Tech and at times as a Comfort Advisor. He got into the HVAC trade because he like working with his hands and the freedom of not being behind a desk.


Larry has grown up around the HVAC trade. He is a second generation and one of three brothers to have embraced the HVAC trade. He has been in the HVAC business for 30 years. He graduated from Universal Technical Institute in 1982. He is a BPI Certified Home Analyst and NATE certified in AC Install, AC Service, Furnace Install, AC Install, Heat Pump Install & Service Install. He has been employed with A-1 Guaranteed since 2008. Larry is married with four children and two grandchildren.

Originally he was hired to expand our Service Department as the Service Manager which had grown leaps and bounds under his management. Larry devotes all of his time to being a Comfort Advisor, helping his customers build the ultimate comfort products for their homes.


Dave has been in the HVAC trade for over 34 years. After serving in the Air Force, he enrolled in HVAC trade school. He has been involved in almost every aspect of the HVAC trade, working in Install and Service Departments. He was a foreman for a large residential company and owned his own HVAC company for 10 years before becoming a Territory Manager for Trane. Dave is married with 2 kids and loves spending time with his four grandchildren.

Dave is the Sales Manager and oversees the installations of Residential and Commercial Customers. He enjoys being in the HVAC trade because he is learning something new every day.


Krissy began her career in the HVAC field when A-1 Guaranteed began in 1996. Having absolutely no previous experience in the field has provided an opportunity to learn something new every day. Prior to A-1 Guaranteed, she was an Admin Assistant, Billing Clerk and a Bookkeeper which has helped in the daily operation of the business.
She has been happily married to Richard since 1989, they have four children together. She holds the titles of Vice President, Treasurer and Secretary of the business.


This is the first time Jeannie has worked in the HVAC industry although she has had many years’ experience as an Administrative Assistant. She began her career with A-1 Guaranteed in July of 2012. Jeannie has an associate in Arts degree. She has had hands on experience with an AC maintenance which has helped in her knowledge of how the unit works. She is constantly learning about this industry.
Jeannie has a daughter who is in college and enjoys fishing and gardening. She is our Dispatch Administrator for the Service Department.


Jason began working with us in August of 2014 but is not new to this business! He started in the HVAC/R business over 23 years ago, 17 of these years were spent as an installer of residential, light commercial, commercial, restaurant/refrigeration, and experimental, HVAC/R equipment. Holding multiple positions has made him extremely knowledge in all aspects of his job. He has ran service calls, been a lead, field supervisor, and has also been responsible for the design and engineering of many of those jobs. Jason has been through Service Tech school, graduating and received his certification as a Service Technician. He holds multiple certifications including R410A, Universal EPA, Mobile Refrigeration certifications and is certified as a Heat Exchanger Expert by Heat Exchanger Experts. He has also received Nate Certifications in Heat Pump & Air Conditioning for Service and for Install.
Jason has been married for over 22 years and has 4 children. He enjoys anything to do with International harvester, Scout 80’s, Baby Scouts and has even restored old cub cadet garden tractors. He enjoys anything outdoors as long as it’s with his family. Recently Jason had been promoted to our Service Manager and is already making changes that will benefit the customers as well as the company in positive ways.


Juan is new to the industry. He went through trade school and began working for A-1 Guaranteed in March of 2015. He spoke with a Maintenance Technician and felt that it would be a good fit for him. Juan is EPA, OSHA and CPR certified and has recently become Nate certified.
Currently, Juan is a Maintenance Technician but is also being trained in multiple departments because of his willingness to learn.


Kirk has been in the HVAC business since 2007, joining the A-1 Guaranteed team in October of 2014. He has been through multiple trainings to sharpen his skills. The reason Kirk got into this field is because he enjoys meeting people and through his honesty, dignity and respect wants to make sure his customers get the best overall value for their money. He is married with one child.
Kirk is a Comfort Advisor who strives to find comfort solutions for multiple types of homes. He considers himself a happy go lucky guy and we would have to agree with him!


Louise, although new to the Heating and Air Industry; is not new to the Contracting side of Business. She was the Office Manager for a local construction company for 15 years. Joining A-1 Guaranteed in 2014, she has quickly learned a multitude of roles. Louise has been married over 32 years and has an adult son.
She is currently overseeing the CHF and Energy Upgrade California programs in addition to learning the Install Department administrative procedures. She is looking forward to new and challenging experiences.


David has been dabbling in the HVAC field for over 20 years. He has worked with A-1 Guaranteed off and on throughout the lifetime of the company finally becoming a full time employee in March of 2014. He is a certified welder and has knowledge in multiple trades of construction safety.
David is currently our warehouse manager. He orders, stocks and delivers equipment and supplies for all aspects of jobs. He enjoys hunting and fishing.


Carlos began his career in the HVAC field 13 years ago doing new construction after which he attended and graduated Specialty HVAC School. He began with A-1 Guaranteed in December of 2015 and currently holds multiple certifications including: EPA Universal, NCI, BPI & Nate certifications.
Carlos is married with three children. He loves Heating & Air Conditioning, especially the air conditioning side of the business, stating, “it’s the best invention ever”. He loves fixing things, getting people comfort and doing it the right way. Currently Carlos is a Senior Service Technician and also does some sales.

Nick has been involved with the business since it began. As a young child he would help his father with multiple tasks such as helping on service/installs and fabrication of sheet metal and performing tasks when school was out. He would help in the warehouses and keep the shop cleaned up. He is currently attending college to be a Radiologist as his career of choice.
Nick has held multiple titles in the company including administrative work, warehouse, installation and currently as our solar monitoring tech. He enjoys riding motorcycles, fishing, bowling and challenging himself to complete a Rubix cube in less than 40 seconds!


Diane has worked in Customer Service for multiple years. Her background consists but is not limited to being a foreclosure counselor and assisting in accounting departments. Her career with A-1 Guaranteed began in 2010 and was the first time she had ever worked in this trade. She is bilingual in Spanish and is certified in Foreclosure Counseling and Residential lending.
Diane has 4 children and is a grandmother to 5 grandchildren. She is devoted to her family and their happiness. Diane has been our Install Admin in the past and is currently our Accounts Administrator & runs our Universal Savings Program


John has been in the HVAC trade for over 28 years! He also has 22 years of Naval Construction. He was working in the trade with the owner Richard when they were younger. Multiple years went by between the two when in May of 2014, he began working for A-1 Guaranteed. He is certified in EPA and has been through various trade schools over the years.
John is currently serving in the Air Force Reserves serving our country. He enjoys working on old cars and trucks. He is a Lead Installer.


Roger is new to the trade and hired straight out of HVAC tech school. He is universally EPA and OSHA certified. He began with the company in June of 2015. Roger has 8 years’ experience as a warehouse & forklift driver.
He has a young son and has entered into this trade to provide a good future for the two of them. He is currently an Installer.


Don had been working/helping his dad for over 30 years. He has had multiple years of working in Commercial and also Residential Installation, beginning his career with A-1 Guaranteed in 2015. He is certified in class 4 Universal duct design. He also has backgrounds in plumbing, electrical, working on ice machines and as a HERS rater.
Don has a son and likes the challenge of making things work. He is a Lead Installer with the company.


Victor started in the HVAC trade over 13 years ago with no formal training, learning on the job. He was looking for a change in careers that would challenge him. A friend introduced him to Heating & Air and as he says, “my career took off from there”. He has experience in both residential and commercial aspects of the trade and began with A-1 Guaranteed in 2005. Prior to this trade, Victor was a Warehouse Manager for 9 years.
Victor is married with 2 children. He enjoys spending time with family and friends. Currently, Victor is a Lead Installer.

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Awards & Certificates

  • Better Business Bureau Honor Roll Member for 21 Years Running
  • BPI Certified
  • Energy Upgrade Participating Contractor
  • Trane Award for Superior Installation and Service
  • Voted Best Heating/Cooling Company for 12 years by Readers of The Vallejo Times Herald
  • Vallejo Schools V.I.P. Award for Partners in Education
  • Vallejo Little League for Support and Generosity
  • Bay Area Certified Green Business
  • Employee Support of the Guard & Reserve by Office of the Secretary of Defense
  • Energy Efficiency Award by Energy Upgrade California


  • Chambers of Commerce: State of California, City of Vallejo, and City of American Canyon
  • League of California Homeowners
  • Electric & Gas Industries Association
  • Air Conditioning Contractors of America
  • Napa-Solano Builders Exchange
  • Better Business Bureau
  • Safety Services Company
  • NATE Certified
  • EGIA Approved Contractor
  • Diamond Certified
  • A-1 Guaranteed Heating & Air Conditioning
    1768 Broadway St. Vallejo, CA 94589