You Will Become a Customer for Life Guaranteed

Areas We Serve in Central New Jersey & the Jersey Shore

Plumbing, Heating, Cooling, Electrical, Water Treatment & Indoor Air Quality Experts

Guaranteed Service continues to be the company of choice for Central New Jersey & Jersey Shore residents who need quality and dependable installations, repairs, replacements, or maintenance services regarding their heating, cooling, plumbing, electrical, water treatment, or indoor air quality.

Our technicians, plumbers, comfort advisers, and customer service representatives are professional and experienced; there’s no job we can’t handle. We are licensed, bonded, and committed to complete customer satisfaction.

Same-Day Service Guarantee - Available 24/7

Guaranteed Service provides plumbing, heating, cooling, electrical, water treatment & indoor air quality services in ALL of Central New Jersey & the Jersey Shore. If you are looking for reliable and trustworthy home service, contact us today!

Guaranteed Service is backed by years of industry experience, with fully trained and knowledgeable technicians available for you 24/7/365. We can help you resolve all of your problems today and we stand behind our Same-Day Service Guarantee, so you can rest assured that today really means today! Whether you have a broken HVAC system, no air conditioning, no heat, need a generator, indoor air quality questions, hard water, a clogged toilet, need a bathroom remodeled, or anything in between, we can help you!

We serve customers throughout Monmouth County, Middlesex County, Somerset County, Ocean County, Mercer County, Union County, Burlington County, and Camden County, including:

  • Adelphia
  • Allenhurst
  • Allentown
  • Allenwood
  • Asbury Park
  • Atlantic Highlands
  • Avenel
  • Avon-by-the-Sea
  • Barnegat
  • Barnegat Light
  • Basking Ridge
  • Bayville
  • Beach Haven
  • Beachwood
  • Bedminster
  • Belford
  • Belle Mead
  • Bernardsville
  • Blawenburg
  • Bound Brook
  • Bradley Beach
  • Berkeley Township
  • Brick Township
  • Bridgewater
  • Brielle
  • Cherry Hill
  • Cliffwood
  • Colonia
  • Colts Neck
  • Cranbury
  • Cream Ridge
  • Dayton
  • Deal
  • Dunellen
  • East Brunswick
  • East Windsor
  • Eatontown
  • Edison
  • Englishtown
  • Fair Haven
  • Far Hills
  • Farmingdale
  • Flagtown
  • Fords
  • Forked River
  • Fort Monmouth
  • Franklin Park
  • Freehold
  • Hazlet
  • Helmetta
  • Highland Park
  • Highlands
  • Hightstown
  • Hillsborough
  • Holmdel
  • Hopewell
  • Howell Township
  • Imlaystown
  • Iselin
  • Island Heights
  • Jackson Township
  • Keasbey
  • Kendall Park
  • Kingston
  • Lakehurst
  • Lanoka Harbor
  • Lavallette
  • Leonardo
  • Liberty Corner
  • Lincroft
  • Little Silver
  • Long Branch
  • Manahawkin
  • Manalapan
  • Manasquan
  • Manchester Township
  • Mantoloking
  • Manville
  • Marlboro
  • Martinsville
  • Matawan
  • Metuchen
  • Middlesex
  • Middletown Township
  • Millstone Township
  • Milltown
  • Monmouth Beach
  • Monmouth Junction
  • Monroe Township
  • Morganville
  • Navesink
  • Neptune
  • Neshanic Station
  • New Egypt
  • Normandy Beach
  • North Brunswick
  • Oakhurst
  • Ocean County
  • Ocean Gate
  • Ocean Grove
  • Oceanport
  • Old Bridge
  • Parlin
  • Peapack and Gladstone
  • Pennington
  • Perrineville
  • Pine Beach
  • Piscataway
  • Plainsboro
  • Pluckemin
  • Point Pleasant Beach
  • Port Monmouth
  • Port Reading
  • Princeton
  • Princeton Junction
  • Raritan
  • Red Bank
  • Rocky Hill
  • Roosevelt
  • Rumson
  • Sayreville
  • Sea Girt
  • Seaside Heights
  • Seaside Park
  • Sewaren
  • Shrewsbury
  • Skillman
  • Somerset
  • Somerville
  • South Bound Brook
  • South Plainfield
  • South River
  • Spotswood
  • Spring Lake
  • Tennent
  • Tinton Falls
  • Titusville
  • Toms River
  • Trenton
  • Tuckerton
  • Wall Township
  • Warren
  • Watchung
  • West Creek
  • West Long Branch
  • Wickatunk
  • Windsor
  • Woodbridge
  • Zarephath

To schedule a same-day appointment, give us a call at (732) 412-1134.

Learn About Guaranteed Service

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

Comprehensive Services to Meet Your Every Need

When you contact Guaranteed Service, we will immediately dispatch one of our technicians and guarantee that we will arrive on time or the service is free. Our team is highly professional, and each member was handpicked so you can rest assured that you’ll get only the best. We will go above and beyond for you.

Our comprehensive services include:

24/7 Availability Guaranteed

We know how frustrating it can be when your water heater stops working or your air conditioner breaks in the middle of a heatwave. Because your comfort is our top priority, we are available 24/7/365 to get your heating, cooling, and plumbing working safely and efficiently. We will make you a customer for life.

Check out our reviews and see why we have earned our reputation as the premier Plumbing, Heating, Cooling, Water Treatment, and Indoor Air Quality company in Central New Jersey and the Jersey Shore. Give us a call at (732) 412-1134 or Contact Us to schedule an appointment.

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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