4.8
Based on 7605 reviews
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Complete Whole House Generator Services from Universe

We want to guarantee our customers are happy with our work, and when you want a reliable whole house generator, we make it happen.

When bad weather strikes, power outages arenโ€™t uncommon throughout our area. Make sure you stay powered up with help from the pros at Universe Home Services. Universe provides complete whole house generator services across Long Island:

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No matter what your generator needs are, we have you covered. Contact Universe Home Services today for generator service anywhere in Nassau and Suffolk County.

(516) 473-0202


Long Island’s Whole House Generator Team

Nassau and Suffolk County homeowners call Universe when they want a generator installed and maintained by a team that understands both the electrical work and the storm patterns that make standby power a necessity here.

A standby generator protects the entire home. Refrigerators, freezers, HVAC systems, water heaters, sump pumps, and critical home systems all stay powered when the utility goes down. Getting a whole house generator sized, installed, and transfer-switched correctly requires a licensed electrician, and Universe has been doing licensed electrical work across Long Island since 1954.

When a standby generator installation surfaces panel work, service entrance upgrades, or gas line coordination, we handle the full scope in-house.

Years in Business

Satisfaction Guaranteed

Emergency Service

Homes Serviced Annually

Why Work With Universe Home Services?

Whole house generator installation legally requires a licensed electrician. We perform every job with licensed master electricians on staff.

Since 1954, we have been doing electrical work across Nassau and Suffolk County. That long history means our team understands how Long Island’s electrical infrastructure and storm patterns affect standby power requirements.

From the generator to the transfer switch to the panel work that sometimes comes with it, we handle the full electrical scope. You do not manage multiple contractors.

Electrical issues do not always happen during business hours. Our team is available around the clock to respond to generator issues and urgent electrical problems.

We deliver clear, upfront pricing on every job. If a repair solves the problem, that is what we recommend. A replacement is recommended when it genuinely serves the homeowner.

A whole house generator is a significant investment. We offer financing options that make the installation more accessible for homeowners planning the upgrade.

Universe is a BBB Accredited Business. Seven decades of electrical service across Long Island stands behind every generator we install, repair, or maintain.

We live and work on Long Island. When a storm hits and the power goes out, you want a generator team that has been in these neighborhoods for generations.


An Easy, Stress-Free Scheduling Process

Getting a whole house generator installed or serviced should never feel complicated.

Universe Home Services makes the process easy from start to finish.

Call us or schedule service online at a time that works for you. Same-day availability is offered for active generator issues or urgent electrical concerns.

Your licensed electrician evaluates your home’s electrical load, panel capacity, gas supply, and placement options for the generator. You receive a clear recommendation and upfront pricing before any work begins.

Every installation is tested, commissioned, and registered with the manufacturer. We walk you through operation so you know what to expect the first time the system activates.

(516) 473-0202

What Our Customers Are Saying

100% Satisfaction Guarantee

4.8
Based on 7605 reviews
Paul Reh
1 day ago
I received a quote on replacing an older existing central air conditioning for my home last summer from Frank Barczik. I didnโ€™t decide to purchase at that time. Last week an emergency situation developed and I called Frank. He quickly and professionally sent me a new quote. I decided to go ahead with the replacement. He stopped by to double check everything. Universe was able to have an installation crew at my home the next day. The crew worked neatly and diligently throughout the day to install the system by 5 pm. Frank stopped by midday to check on everything. The installers were polite and knew what they were doing. I am very satisfied with the work that was done. If you want a professional job done right the first time with a great company that stands behind their work, choose Universe.
Mary Vargas
4 days ago
Connor Tomaszewski is one of the best technicians out there and the only one who truly knows Navien boilers inside and out. His work is outstanding, and he is always professional, knowledgeable, and reliable. I highly recommend him to anyone looking for top-quality service!
We recently hired Universe for our oil to gas conversion, along with some related work. Everyone who worked on these projects was professional and a pleasure to deal with. In particular, Nikki LaCava did a wonderful job coordinating the work and assisting with our permits and other required paperwork. Brian Gerle and Hayden Muttee did a fantastic job installing the gas piping for the project, while Sal Tarantino and his crew (Hayden Muttee and Nick DiGiacomo) also did fantastic and efficient work removing our old furnace and hot water heater and installing the new equipment. Additionally, Christopher Martin did a great job fixing an interim problem with our old hot water heater before the final conversion was completed. Thanks to you all for a job very well done – each one of you deserves a five-star review! Thank you again for everything, Craig and Claudine Livingston
Paula Condit
6 days ago
Dawid Boroch and Tyler Quintero came to upgrade my electric, replace box inside and outside. Fantastic job done. Neat clean and knowledgeable. Explained all! Very happy with Universe
JG
1 week ago
June 2026 The pump from my washing machine decided to stop working a few nights ago. What a disaster! Thank goodness I had the gizmo on the floor that starts beeping when water hits it because it could have been a lot worse. The water in the pump kept pouring out until it was empty. I called Universe and Melanie F. came over. She evaluated the situation and made plans to come back the following day to install a new pump. I was so impressed with Melanie. Her recommendations on the new pump worked out great. I was so pleased with Melanie's professionalism and knowledge that she's coming back soon to install the automatic water main shut off when it senses a leak. Once again I highly recommend Universe and Melanie F.! April 2026 Nick S. came to do the yearly service for my air conditioning. Nick is great and very up front which I like. After almost 17 years I need a new system. Ugh! He brought me outside and showed me all the reasons why it should be replaced. I could wait & see but didnโ€™t want to risk it so Saturday Iโ€™ll be getting a new system. It just needs to be done. I was very happy Nick explained everything to me. Heโ€™s very knowledgeable & friendly. I would also like to acknowledge the following employees from Universe who all had some part of the installation of my furnace, compressor and humidifier. Everyone who came to my house were so friendly and respectful. The guys all explained what was being done. They also installed an Air Scrubber which purifies my system of spores, etc. The employees are Tommy Ercolano, Matt Drury, Carlos Caceros, Justin Quan-Soon, Jamell Smith and Karl Rindfleisch. All were fabulous. And I can't forget Chester Sacknievich who came back to fix an issue I was having and figured out the solution. Chester is great. I highly recommend Universe. Their employees go above and beyond!!
Vanessa Arnone
2 weeks ago
Our water heater unexpectedly had to be replaced after National Grid identified it as a safety concern before reconnecting our gas service. Needless to say, it was a very stressful and completely unexpected situation. From my very first phone call, everyone at Universe Home Services was kind, patient, and incredibly helpful. They understood the urgency and had a technician at my home much sooner than I expected. Jeff Madonia was outstanding. He took the time to thoroughly inspect everything, patiently answered every question I had, and never made me feel rushed or like I was inconveniencing him. He explained my options clearly, walked me through the estimates on his tablet, and made sure I understood everything before moving forward. Initially, it looked like the installation might have to wait until the following morning. I asked if there was any chance it could be done the same day, and Jeff immediately went to see what he could do. A few minutes later, he came back and told me they were going to make it happen that day. That level of customer service meant so much during a stressful situation. I also appreciated how respectful Jeff was while working in my home. Even when I had left the door unlocked while he was moving equipment in and out, he always knocked before coming back inside. That level of professionalism and respect stood out to me and made a stressful situation much easier. The entire experience, from the first phone call through the completed installation, was professional, efficient, and reassuring. Jeffโ€™s kindness, knowledge, and willingness to go the extra mile made all the difference. Thank you, Jeff, and thank you to the Universe Home Services team.
I had an issue with my HVAC, and Universal was able to send someone out very quickly. Both Chester and Dawid were knowledgeable, professional, efficient, and very respectful of my home. They diagnosed and fixed the problem promptly, and the entire experience was smooth from start to finish. Thank you for your excellent service! I will definitely use Universal again in the future and highly recommend them.
Anthony Hartmann
3 weeks ago
Excellent work by Patrick for a light fixture and hard wiring for a video doorbell with chime.
Michael Greer
3 weeks ago
Universe responded promptly to my service call and the technician was very friendly and knowledgeable. We had to wait a few days for the parts, but when it arrived (new sewage ejector pump) the repair was done quickly and everything worked perfectly.
howard valan
3 weeks ago
Tim the technician answered all my questions to my satisfaction and explained all my options thoroughly. His work solved my issue and he offered some insight into a replacement unit if I opted to do so.
Desiree Boucher
3 weeks ago
I had a great experience with Universe Home Services. I initially left a message on their call system and received a call back with 30 minutes from Laurie. I explained my concern and issue we were having with out Central AC and she was able to schedule service for that same day. I received text messages with arrival time, when the technician was on their way, and when they arrived at my home. Our service technician was Bob Grillo. He was super personable, kind and very thorough in his process. He answered all my questions and explained exactly what he was doing as he was troubleshooting. I had a great experience overall with the customer service as well as the job completion and would highly recommend Universe Home Services and Bob as the technician.
Danny Sutton from Sales was amazing.without him this was not possible.so kind and empathetic towards customer amazing service From the crew who was here to install the air condition Sean Dany Jared Brian Very professional polite and extremely knowledgeable They worked so efficiently and kept the area clean that you could not feel that a big job was completed after they left. I will recommend Universe home service to everyone out there who is looking for a reliable company.
shelly bansal
3 weeks ago
VERY. GOOD. SERVICES. THEY. COVER. GAURENTEE. FOR 5. YEARS. GOOD PRICE. TONY. ASHMAVI. THE. BEST. WHO. EXPLAINED. ALL DETAILS. AND. GIVE. GOOD PRICE. TOP. RATED. THANKS TO. UNIVERSAL. HOME. SERVICES
Scott Faucheux
4 weeks ago
We have used Universe now for a few installations, Anthony recently swapped out a toilet for us, cleared out a major blockage on a sewer line and Vidal just installed a whole house filtration system for us after our previous system failed on our 1929 house. They have been very polite, knowledgeable and efficient and have always given us fair and tiered options with pricing. We would highly recommend their services.
Justin Bridges
4 weeks ago
Micheal was a great technician, perfectly on time, fast detailed diagnosis, made quick work of the repair work, communicated everything. Universal did all my installations of all new HVAC and I always trust them with the maintenance.
Mario Sesso
1 month ago
Ac repair
Donna Cincotta
1 month ago
Kevin came to my home, evacuated the problem and detailed the situation to me. He ordered the new ductless equipment and installed it the next day. Kevin was professional, honest, neat and made sure the air conditioning was working properly. For my air conditioning units and repairs, I wouldnโ€™t go anyplace else.
The team was incredibly professional, friendly and worked efficiently to get the job done. I had a great experience
fran lucher
1 month ago
Came within reasonable time, fixed problem & checked for other possible issues.
William Funcheon
1 month ago
Dean, your technician is definitely an asset to your company. He was so thorough and kind. I canโ€™t say enough about him!
Laurence Andrews
1 month ago
I am pleased with the the service man that came out. He is very knowledgeable and professional
Donna Mckeon
1 month ago
Our service person Sean was great. Very knowledgeable and friendly. Answered all questions we had. Definitely will use Universe home services again
I canโ€™t say enough good things about Universe home services and repairs. We have been a customer of Universe for years. Recently we had a plumbing issue and they were wonderful. Jeff the plumber was very professional and a pleasure to work with. We have also worked with Marc on a gas conversion. He was very knowledgeable, professional, and helpful. Great company with quality people! Update June 2026 – another 5 stars for Universe Home Services and electrician Dawid Boroch. Dawid was very professional, knowledgeable, and his work is exceptional. He explained the scope of the job and answered our questions before beginning his work and walked us through the results afterwards. Dawid was an absolute pleasure to work with and we highly recommend him!
Marie kopczynski
1 month ago
Very professional Answer all my questions Did a great job
Ronald Goebel
1 month ago
Chester was the best service tech we ever had. A real credit to Universe-friendly, knowledgeable and thorough in his work

Universe Home Services truck stocked for HVAC, plumbing, and electrical repairs

(609) 799-3434

Whole House Generator Installation

Installing a whole house generator is a licensed electrical project that integrates the generator, the transfer switch, the fuel supply, and the home’s electrical panel into one automated system.

Universe installs whole house generators across Nassau and Suffolk County.

A whole house generator powers the full home during an outage. Refrigerators, freezers, HVAC, water heaters, sump pumps, and entertainment systems all stay running without the stress or fire risk of a portable generator setup.

A properly installed standby generator activates on its own when the utility power fails and shuts down when power is restored. You do not have to be home for the system to protect the house.

Universe performs a load calculation before recommending a generator size. A correctly sized unit runs efficiently and handles the home’s real electrical demand without cycling or overloading.

The automatic transfer switch is the brain of the standby system. We install or upgrade the transfer switch, coordinate with the existing panel, and complete any panel work required for a clean installation.

Whole House Generator Replacement

When an existing standby generator has reached the end of its service life or is no longer reliable, replacement is the right call to keep the home protected.

Universe handles whole house generator replacement across Nassau and Suffolk County.

Standby generators have a finite service life, typically 15 to 25 years depending on usage and maintenance. A generator past that window is not a system to rely on through the next storm season.

When the cost of a significant repair approaches what a new generator costs installed, replacement is the better investment. A new unit also comes with manufacturer warranty and updated technology.

Additions, electric vehicle charging, or new HVAC equipment can push the home’s electrical load beyond what the existing generator was sized for. Replacement with a correctly sized unit restores full protection.

A standby generator that fails to activate, runs inconsistently, or needs repeated service is a system that cannot be counted on during an outage. Replacement provides a dependable restart.


An electric outlet glowing from within and a three prong electric plug and cord.

Make Sure You Have a Surge Protector When You Install a Generator

Installing a generator is a wise decision for ensuring uninterrupted power supply during outages, but it comes with its own set of considerations. When setting up a generator, itโ€™s crucial to pair it with a surge protector.

Generators, when activated, can produce a sudden surge of power that may overwhelm and damage older electrical appliances not designed to handle such fluctuations. A surge protector acts as a barrier, regulating the electrical flow and protecting your appliances from potential damage.

By incorporating this additional layer of protection, you ensure the longevity of your devices and enhance the overall safety of your electrical system. Investing in a surge protector is a small yet essential step to guarantee your generatorโ€™s smooth and secure operation.

Whole House Generator Repair

A generator that is not working correctly is a system that may not activate when the next outage hits.

Universe diagnoses and repairs whole house generators across Nassau and Suffolk County. We can help with:

A standby generator that did not start when the utility went down has an underlying issue that needs diagnosis. We identify the cause and complete the repair so the next outage is handled.

Standby generators run a self-test on a set schedule. A self-test that fails, short-cycles, or throws an error code is a warning the system needs attention. We investigate and resolve the issue.

Rough operation, irregular cycling, or new noises from the generator point to mechanical or fuel supply issues. Addressing these early prevents a full failure during the next outage.

The automatic transfer switch has to operate correctly for the generator to do its job. We diagnose and repair transfer switch issues including failed relays, connection issues, and control problems.

Generator outside of a home with all the lights on


Green Universe Van parked on the side of residential street

(516) 473-0202

Whole House Generator Maintenance

A standby generator sits idle most of the time and has to start and run reliably the moment the utility fails. That requirement makes routine maintenance essential.

Universe provides whole house generator maintenance across Nassau and Suffolk County.

An annual maintenance visit includes oil and filter changes, spark plug inspection, battery check, and a full operational test. That visit keeps the generator ready for the next outage.

A dead battery is one of the most common reasons a standby generator fails to activate. Routine battery and starter system checks catch this before it becomes a no-start during an outage.

Natural gas and propane systems need clean supply lines, correct pressure, and proper regulation. We verify the full fuel path as part of maintenance.

The transfer switch is tested periodically to confirm it activates correctly and transfers load cleanly. That test keeps the full standby system verified, not just the generator itself.

Other Solutions for Your Home from Universe Home Services


Schedule Whole House Generator Installation on Long Island

Universe Home Services is committed to delivering the best possible products and service on every generator project.

We offer same-day services, upfront pricing, and financing options, plus 24/7 emergency service when you need it. Contact us online or call to get on the schedule.

Universe Home Services Technician near open van doors

Whole House Generator FAQs

How long does a whole house generator last?

Most standby generators last 15 to 25 years depending on usage, maintenance, and how often the unit runs. Regular maintenance extends the lifespan and supports reliable activation across that window.

Do I need a surge protector with a whole house generator?

Yes. Generators can produce a sudden surge of power during activation that could damage older electrical appliances. A whole-home surge protector regulates electrical flow and protects your devices from the fluctuation.

How much maintenance does a standby generator need?

Annual maintenance is the standard recommendation, with additional checks after heavy use during a prolonged outage. Oil changes, filter replacement, battery checks, and fuel system inspection are the core of the visit.

What size generator do I need for my home?

Size depends on your home’s electrical load, the systems you want to keep running during an outage, and the generator’s output rating. A licensed electrician performs a load calculation to match the generator to the home.

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