Reviews

Guaranteed Service has become one of the premier HVAC, plumbing, and indoor air quality companies throughout Monroe Township and Central New Jersey. We strive to achieve 100% customer satisfaction—guaranteed. Read what our past customers have to say about their experience with us and then contact us by calling (732) 412-1134 to schedule an appointment. We look forward to working with you.

  • 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.

  • Now we have a great system with a lifetime warranty.
    These guys are the BEST. They replaced my old heating and air conditioning with energy star system. I love it. Quick and efficient. AL is a lovely young representative and he explained in detail what we getting. Brian, Tommy and Greg the installers, they worked very clean and they are wonderful. Now we have a great system with a lifetime warranty. Thank you GUARANTEED SERVICE.

    - Kay G.

  • Knowledgeable and helpful!
    Joe was extremely knowledgeable and helpful. Found the problem immediately and offered helpful tips. I would recommend this service.

    - Ricardo L.

  • Courteous and friendly and was a top notch professional!
    Joe Rivera was courteous and friendly and was a top notch professional! He explained everything he needed to do for our Air Conditioner service. He also answered all of my questions. Would recommend Joe and Guaranteed Service to everyone.

    - Gina R.

  • We are extremely satisfied with the unit and after sales service provided by Guaranteed Service.
    We initially sought the services of Guaranteed Service for fixing a problem in our old heating system. Based on their professionalism in approaching and resolving the issue we decided to buy and install a brand new heating system from the company. We are extremely satisfied with the unit and after sales service provided by Guaranteed Service.

    - Balaji M.

  • Top-notch professional service!
    Top-notch professional service the technician super nice respectful and solve the problem quickly and efficiently. I will definitely highly recommend guaranteed service.

    - Ofir H.

  • Prompt, courteous, efficient.
    Helmi and the technicians were prompt, courteous, efficient and we would recommend it to other people. We appreciate it, thank you.

    - Lee B.

  • Overall great experience and would highly recommend to anyone looking for anything related to HVAC and/or plumbing.
    Guaranteed Service provided excellent service, professionalism and knowledge. Jason helped us understand the faults and issues with our old systems when he came for a scheduled tune up. Al was able to provide us new equipment solutions that worked for our home and budget, and Brian and crew did an excellent job installing our new HVAC system and hot water heater. Overall great experience and would highly recommend to anyone looking for anything related to HVAC and/or plumbing.

    - Daniel O.

  • Hands down the best service I have ever received.
    I had an issue with my furnace this Friday during the cold stretch of weather we had. I most definitely thought I would not get anyone to come out until the weekend or possibly even Monday. Much to my surprise I had someone out within hours. Not only that but the issue was resolved within a few hours after the arrival of my technician, Joe Rivera. He was simply awesome - professional and thorough in his explanation. Hands down the best service I have ever received and would highly recommend Guaranteed Service for any future service and Joe Rivera.

    - Joe R.

  • They made me feel comfortable and at ease.
    These guys are the best, prompt service, and they took the time to explain everything. They made me feel comfortable and at ease.

    - Angelo M.

  • Exceptional quality of work, top industry professional.
    Exceptional quality of work, top industry professionals: from explanation of system options through installation of heating and AC units. I highly recommend for new equipment and HVAC maintenance needs.

    - Larry K.

  • This company is great, prompt, clean and great personality.
    I had a wonderful experience with GUARANTEED SERVICE. The guys who came my service my heating and AC system were GREAT. I would definitely recommend the company and the wonderful guys who work for them. Especially the service technician Ben who explained in details everything that was wrong with the system and explained what it needed to be done. I had Helmi who was fantastic and we decided to replace the 34 years old system as advised. the crew Tommy and Greg arrived the following morning promptly on time and get the job done beautifully.

    This company is great, prompt, clean and great personality. I will recommend them to all my family and friends.

    - Sherry T.

  • Very thorough, answered all my questions.
    Justin Ebner was the technician that came to my house when I had water leaking from the AC unit. He was courteous and took the time to walk me through the issue. He was very thorough, answered all my questions. I felt very comfortable that the issue was appropriately identified and the appropriate corrective action was taken.

    - Suliman C.

  • Thanks a lot! I will be very happy to recommend your company to my friends.
    I bought the Amana AC system with installation from Guaranteed Service last week. Helmi was great company representative, he spend time with me explaining the details with AC system. Justin Ebner, Robert Smith and John Otool are very good engineer with AC installation. Job well done for a fair price. Thanks a lot! I will be very happy to recommend your company to my friends if they need to buy new AC with installation.

    - Robert Zheng

  • Job well done for a fair price.
    Helmi and the installation crew did fantastic job. Helmi was the BEST, he spend time with me explaining the details of my heating and AC system. George and Mark did an excellent job installing my AC system. Job well done for a fair price.

    - Trizonna Coco

  • I highly recommend Guaranteed Service for any HVAC installation and or service work.
    Very impressed with the quality and expeditious service received from this contractor. They performed a complex boiler installation in my home. I am a professional engineer and am extremely satisfied with the work performed. They completed the installation on time, and in a very neat and workmanlike manner. I had a minor problem, and they came on a Saturday morning to sort this out. I highly recommend Guaranteed Service for any HVAC installation and or service work.

    - Mike Steel

  • THANK YOU Guaranteed Service. You guys are amazing!!!!!!
    WOW!!! What a great service and very pleasant staff to work with. To begin with, when you call them - Lauren is a pleasant person to speak with. Then our service technician Ricardo was amazing to work with. He first inspected the multiple jobs we had to get done, then explained everything to me, along with approx costing. Then he performed the work to our complete satisfaction and in a timely manner. I could not have asked for a better service. THANK YOU Guaranteed Service. You guys are amazing!!!!!!

    - Sunny K.

  • I highly recommend them for any/all of your air conditioning and heating needs.
    I'd like to thank Helmi and the entire staff from Guaranteed Service for their professionalism, courtesy and flawless workmanship for the installation of my new AMANA 16 SEER air conditioning and heating system. Their installation crew were neat, thorough and very polite (Tommy is the man). I highly recommend them for any/all of your air conditioning and heating needs. I will make it a point to let all of my neighbors and friends in Knob Hill (Manalapan), that they must use Guaranteed Service, b/c you're guaranteed great service. Thanks again...

    - Thomas Healey

  • He was informative, very personable and we felt very at ease in his company.
    Justin Ebner was an excellent technician. If you had 10 stars he would get it. He was informative, very personable and we felt very at ease in his company. I will share this experience with family and friends, Mrs. Spinelli

    - Alba Spinelli

  • Stellar work, professional and courteous technicians and a reasonable price.
    Installed two new AC/furnace units in one day! Stellar work, professional and courteous technicians and a reasonable price. Well done!

    - Marc Eliott Warner

  • They came out in less than an hour and solved the issue right away.
    Wow impressive!!!!! I called late this Sunday night. With a clog. I expected to book a Monday appointment. They came out in less than an hour and solved the issue right away. Everything went perfect and no more problem. Adam is great. I appreciate the prompt service call.

    - Joe Esposito

  • He was courteous and took the time to walk me through the issue.
    Justin Ebner was the technician that came to my house when I had water leaking from the AC unit. He was courteous and took the time to walk me through the issue. He was very thorough, answered all my questions. I felt very comfortable that the issue was appropriately identified and the appropriate corrective action was taken.

    - Vex Axel

  • Same day service with a smile.
    Same day service with a smile. Great company to work with, Travis was the plumber and he was exceptional, arrived on time and fixed the problem quickly and efficient. Great attitude and great job.

    - Sirr0undCS Sirr0undCS

  • The tech was very professional, neat and efficient.
    Great service. Joe the tech was very professional, neat and efficient. He had the broken heating system up and running same day even with having to go out for a part after diagnosing the problem. Highly recommend!

    - Shari E.

  • Can't say enough good things about them!
    My husband and I are so happy with the service we received! Such a great group of employees, can't say enough good things about them! They are polite, knowledgeable, friendly, and care about the home they are coming into. We enjoyed our experience with them. The installation went so easy, and we're looking forward to working with them in the future. They'd be the first company I'd recommend to anyone needing heating and AC service! Thank you Guaranteed for a wonderful experience!

    - Susan Z.

  • I can't believe how wonderful this whole experience was.
    I can't tell you how happy I am with the service I received from Guaranteed Service. I wish i could give you ten stars.

    I called on Monday because my unit would not kick on, Lauren and Danielle were able to schedule me an appointment that day. Joe came out, 30 minutes before he arrived i received an email and text message with his picture and information (I thought this was such a great feature) ten minutes before he arrived he called me. He found the issue and then discovered an even worst issue with my unit, the heat exchange had several severe cracks the system was basically ruined. Joe got on the phone with the office and was able to get Tim to come visit and gave me an estimate on a new unit. They took care of everything!! Yesterday Brian and Jason came and installed my new unit, clean, professional, and courteous.

    Having a 1 year old boy and a 4 year old girl, getting heat in the house before the twenty degree weather started was priority. I can't believe how wonderful this whole experience was. You guys have a customer for life! A big thanks to everyone at Guaranteed services.

    - Paul C.

  • I would definitely recommend Guaranteed Service to family, friends, and all. Great Job!
    Phenomenal experience from inception to finish. Every team member, from receptionist to sales to install, was exceptional. We chose Guaranteed Service ahead of their competitors because of their prompt response to schedule free estimate/evaluation, knowledge of product and time to install. We are very pleased with their service all around and would definitely recommend Guaranteed Service to family, friends, and all. Great Job!

    - Ken A.

  • Great company and service!
    Great company and service! Very professional and gave a really good price overall!!! Was very impressed! Changed both furnace and A/C and house feels like a little bit of heaven!

    - Peter O.