You Will Become a Customer for Life Guaranteed

Middlesex Heating, AC, Electrical, Plumbing, Indoor Air Quality & Water Treatment Services

Keeping Your Family Comfortable!

At Guaranteed Service, your comfort is our top priority. Our team is fully committed to taking care of your entire home and helping it run as smoothly as possible. From minor repairs to major system replacements to routine maintenance, our highly trained technicians can handle any task you throw our way. We proudly offer a comprehensive set of heating, AC, plumbing, indoor air quality, and water treatment services in Middlesex.

Our services include:

  • AC replacements
  • AC repairs
  • AC tune-ups
  • Ductless ACs
  • Heater repairs
  • Heater replacements
  • Heater tune-ups
  • Boilers
  • Drains and sewer lines
  • Leak detection and repairs
  • Water heaters
  • Electrical inspections
  • Electrical repairs
  • Whole-house generators
  • Whole-house surge protection
  • Lighting
  • Humidifiers
  • Dehumidifiers
  • Air purifiers and cleaners
  • Water filtration
  • Water softening

Call (732) 412-1134 or contact us online to schedule service.

Benefits of Upgrading Your HVAC System

Replacing your heater or air conditioner might seem like an overwhelming task, but it comes with many benefits. Outdated HVAC systems often require frequent and costly repairs, create extremely high energy bills, consume an extreme amount of energy, and fail to keep your home comfortable. However, when you install a brand-new system, you can kiss your HVAC problems goodbye. With a new heater and air conditioner, you can enjoy better energy efficiency, lower monthly bills, fewer repairs, better indoor air quality, increased control over your comfort, and better system performance.

When the time comes to install a new HVAC system, turn to the Middlesex heating and AC pros at Guaranteed Service. As a leader in the industry, our team has access to the highest performing, most energy-efficient, reliable systems on the market. We will work closely with you to understand your comfort needs and select the perfect system for your home.

Signs You Have Poor Air Quality

On average, Americans spend upwards of 90% of their time indoors. That makes maintaining good indoor air quality (IAQ) very important. Polluted indoor air can trigger allergy and asthma symptoms, worsen cold or flu symptoms, and increase the likelihood of experiencing respiratory illnesses.

Signs that your home is suffering from poor air quality include:

  • There are one or more smokers living in your home
  • You have mold or mildew
  • There is an excessive amount of dust
  • The air in your home is stale or has a musty odor
  • Your home is too dry or too humid
  • You have recently experienced a pest infestation
  • Your home was recently renovated or remodeled

If you suspect there is room for improvement in your air quality, turn to Guaranteed Service. Our Middlesex indoor air quality pros offer various solutions guaranteed to help you and your family breathe easier.

Do I Need Surge Protection?

You rely heavily on your electrical systems to get you through each day, so you definitely want to be sure they are protected at all times. Unfortunately, power surges are an incredibly common occurrence brought on by lighting, power outages, tripped circuit breakers, short circuits, downed power lines, and more. These surges of power can slowly damage your appliances over time and result in premature system failure. Luckily, there is a solution. Whole-home surge protection is a great way to divert these power surges and protect your most essential electrical appliances. With whole-home surge protection, your surge protector automatically detects surges in power and diverts them into the ground before they have a chance to damage or destroy your electrical system.

For any questions about how surge protection works, please contact our Middlesex electricians by calling (732) 412-1134.

We Always Get the Job Done Right

When it comes to helping your home run smoothly, our team never cuts corners or settles for work that is “good enough.” You can always count on our highly trained and fully qualified technicians to handle your every home comfort need, no matter how big or small. We are so confident in our ability to get the job done right the first time that we back each of our services with a 100% satisfaction guarantee. Turn to us for your air conditioning, heating, electrical, plumbing, indoor air quality, and water treatment services in Middlesex and we promise you’ll never need another team again.

Guaranteed Service is available 24/7. Call (732) 412-1134 for exceptional service.

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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