You Will Become a Customer for Life! Guaranteed

Guaranteed Service Code of Ethics


  • WE WILL TREAT every customer with integrity, honesty and ethically.
  • WE WILL PROVIDE every customer exactly what we promise through outstanding service.
  • WE WILL PERFORM every task to meet or exceed technical codes and customer expectations.
  • WE WILL DIAGNOSE every customer's situation with extreme thoroughness and gather all important facts to gain the best understanding of the customer's problem, exactly what they need, and provide all options and recommendations to provide the best service to our customers.
  • WE WILL NEVER mislead or offer customers a service or product that they do not need or want.


  • WE WILL TREAT every employee with respect and dignity.
  • WE WILL PROVIDE ongoing and thorough training to every employee on a regular basis to uphold and improve our extremely high performance standards


  • WE WILL PERFORM only services that we are capable and qualified to perform.
  • WE WILL continuously maintain professional behaviors and attitudes towards everyone we serve to include our customers, suppliers, employees, fellow contractors and the general public.
  • WE WILL NOT provide any service to any customer under any circumstance that will compromise the integrity of our profession, the safety of our customers, or our company.
  • WE WILL NOT mislead or advertise in any form of deceptive manner.


  • WE WILL AGREE with every customer upfront regarding our charges and explain in detail what they include. Our fees will always be in line with the quality of our services, and the responsibility we accept.
  • WE WILL UPHOLD a profitable company as required as part of our responsibilities to our employees and our families.
  • WE WILL BE RESPECTFUL of the honest feedback received by our customers through reviews and advice and our right to ethical profitability.


  • WE WILL be upstanding corporate citizens at all times.
  • WE WILL PRESERVE the safety and health of our customers and communities by sharing our knowledge of new technical advancements learned within all communities that we serve.

Learn About Guaranteed Service

  • You’ll Become a Customer for Life
  • Welcome to Guaranteed Service!
  • See Why They Become Customers for Life!

Our Pledge:

As an Employee of Guaranteed Service
  • I will always ask the customer at the end of my visit if they are completely satisfied with my visit and the service provided. If they are not, I will do everything in my power to make sure that they are.

  • I promise not to mislead or offer any customer products or services that they do not need or want.

  • I promise to always be ethical and do the right thing, every time.

  • I promise to take personal responsibility for the satisfaction of every customer and will follow all company policies and procedures at all times.

  • I will provide every customer, regardless of size of project, with every available option, which will allow them to make the repair or replacement decision that best suits their needs.

  • I promise to always use my technical knowledge and skill to diagnose all of our customers issues as efficiently and quickly as possible, while providing constant updates to our customer every step of the way.


  • Best HVAC experience I’ve ever had. “The guys at Guaranteed are the best. Al Giordano was friendly, on time and knowledgeable. He helped us pick out the best system for our home. Brian and Nick installed the system in one day. They were efficient, respectful and clean. The job came out better than I could’ve imagined. Best HVAC experience I’ve ever had.”

    - Sebastian C.
  • I will definitely use them again! “Truly great service, Joe is an excellent technician. He took the time to explain everything he was doing and answered all of my questions. I’m so glad I took advantage of the tune-up offer that Guaranteed Service was offering. I will definitely use them again for my maintenance service in the future and would highly recommend this company.”

    - Susan C.
  • Courteous, Professional and Efficient! “One of the best companies that I have ever worked with! From my first phone call to the final walk through, everything was impeccable! Al Giordano
    was just amazing, explained everything upfront and took the time to answer all my questions and address my concerns. Jason, Brian and Nick were fantastic and I cannot stop raving about them to my friends and family! I would recommend them over and over again, courteous, professional and efficient! Call Guaranteed Service, you will not be disappointed!”

    - Lyndell P.

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