Whole House Generators for NJ
Serving homeowners across New Jersey & Staten Island, NY.
When your power goes out, your comfort, safety, and daily routine can quickly be disrupted. That’s where whole house generators come in. These systems provide reliable backup power that keeps your home running, even during extreme weather or utility outages.
At Guaranteed Service, we help homeowners in New Jersey pick the right generator. We also install it properly and maintain it for years. If you want peace of mind during storms or need to protect medical equipment, our licensed electricians can help you.
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whole-house generators
WHOLE-HOUSE GENERATORS AT GUARANTEED SERVICE
Whole-House Generators in New Jersey
Why Install a Generator on Your Property?
Power outages aren’t just inconvenient. They can cause real problems. From spoiled food and frozen pipes to dark hallways and disconnected medical devices, a power loss can create serious risks. That’s why more homeowners are installing whole house generators than ever before.
These systems automatically kick in when your power goes out, restoring electricity to essential systems and appliances within seconds. You won’t need to fumble for flashlights, candles, or wait hours, or even days, for utility crews to restore your power.
Whole home generators are ideal for:
- Families with young children or elderly residents
- Homes with medical equipment
- Areas prone to frequent storms or hurricanes
- People who work from home or run home-based businesses
- Protecting sump pumps, heating systems, and refrigerated food
Best of all, these systems work automatically. With a transfer switch installed, the generator senses a power outage and starts up within moments. No manual setup. No refueling. No hassle.
Whole-House Generators
What Size Generator Do You Need?
Choosing the right generator for your home is one of the most important decisions you can make. Installing a system that's too small will leave parts of your home without power. But going too big can lead to higher whole house generator costs and unnecessary fuel usage.
At Guaranteed Service, we simplify things. We calculate your starting wattage, which powers your appliances, and your running wattage, which keeps them going.
Here’s what we evaluate:
- How many rooms and appliances you want to power
- Whether you need to run central air conditioning or heat
- Your water heater type and other high-demand devices
- If you’ll power home office setups or medical equipment
We will help you pick a standby generator with the right wattage for your needs. This could be 10,000 watts for essentials or 22,000 watts for full home coverage.
Benefits of a Backup Generator
A standby generator doesn’t just power your home: it protects your lifestyle. Here are some of the most important benefits of installing a whole house generator:
- Full-home coverage: Power your lights, appliances, HVAC system, and more
- Automatic operation: Starts within seconds of a power outage
- Low-maintenance fuel options: Choose natural gas or propane for consistent fuel availability
- Quiet performance: Modern systems operate quietly outside your home
- Home value boost: Backup generators are a selling point for future buyers
Your comfort, safety, and convenience are worth protecting. Backup generators are no longer just for emergencies; they're part of a smart home strategy.
Generator Maintenance & Repair Services
Like any major appliance, standby generators need regular care to stay in good working condition. At Guaranteed Service, we offer complete generator maintenance plans that include:
- Fuel system checks
- Oil changes
- Filter replacements
- Battery testing
- Transfer switch inspections
- Load bank testing
We’ll ensure your generator starts when it should, runs cleanly, and doesn’t leave you stranded during an outage. And if you’re having issues? Our team is ready with fast, local generator repair services to get your system back on track.
Prevent Power Going Out During a Storm
New Jersey weather can be unpredictable, and storms can knock out power for hours or even days. A whole house generator helps you stay safe and comfortable, even in the worst conditions.
Whether it’s summer thunderstorms, winter ice, or hurricane season, a backup generator ensures your home stays powered. Keep your sump pump running, your basement dry, your heater working, and your fridge from spoiling.
We install systems that meet all local codes and fuel line regulations, ensuring your home is protected and your installation is 100% compliant.
WHO WE ARE
At Guaranteed Service, We:

Promise not to mislead or offer any customer products or services that they do not need or want.

Promise to always be ethical and do the right thing, every time.

Promise to take personal responsibility for the satisfaction of every customer and will follow all company policies and procedures at all times.
Guaranteed Service
Our Location
2675 NJ-70 Manasquan, NJ 08736
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Hours:
- Mon - Sun
- Open 24 Hours
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SEE WHAT OUR CUSTOMERS ARE SAYING
TESTIMONIALS
★★★★★
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.
★★★★★
Got an estimate in 1 day and install 2 days later. Everything was amazingly smooth and effortless and our new system is fantastic. Love our new thermostats too. We were very pleased, especially right now when people are having so many problems getting supplies and equipment. Already recommended to neighbors.
-Nancy Troske
★★★★★
Professional & Friendly
Truly great service! He was professional & friendly. He is clearly experienced because he installed a water-pressure sub pump backup system for us which is a complicated job. He came back again a couple of days later to replace an old leaking toilet. He was considerate with cleaning up afterwards too. I highly recommend Guaranteed Services & especially Rob.
-Steve Minarik
★★★★★
I Could Not Be Happier with the Service
I am so impressed! I had a water leak and the technician came out to fix my problem shortly afterwards. I could not of been happier with his service. Barry was polite, honest and extremely hard working. I truly appreciate all he did to help me on a bad situation.I highly recommend Guaranteed Services for all your needs. Thanks again!!
-Susan C.
★★★★★
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.
★★★★★
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.
★★★★★
Got an estimate in 1 day and install 2 days later. Everything was amazingly smooth and effortless and our new system is fantastic. Love our new thermostats too. We were very pleased, especially right now when people are having so many problems getting supplies and equipment. Already recommended to neighbors.
-Nancy Troske
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AREAS WE SERVE
Monmouth County
Ocean County
Somerset County
Mercer County
Middlesex County
Hunterdon County