Come along for a view of our expert care team in action. Service Experts - we deliver expert HVAC, and plumbing services nationwide. This video showcases the dedication of our team to provide professional service and local care for your home system needs.
Stan Gelber & Sons, Inc. Heating and Cooling
Serving Long Island since 1943
Expert home services—locally managed with national brand support. Quick repairs, full upgrades, or anything in between.
With any new HVAC, Indoor Air Quality, Water Heater or Water treatment Service Experts Advantage Program lease agreement, we will make your payments for the first 6 months.
Valid on new Advantage Program lease agreements from 1/7/26 through 2/28/26. Customer owes $0 for the first six months; regular monthly lease payments begin thereafter. Early termination during promotional period will result in charges for elapsed months. See your full Advantage Program Lease Agreement for complete terms and conditions, including total lease cost and payment schedule.
Jan 7, 2026
- Feb 28, 2026
10% Off Any Product or Service for Active Duty, Retired, and Veteran Military Personnel
It’s our way of thanking you for your courage, dedication, and sacrifice to protect our freedom. All work is performed by licensed experts and backed by our Service Experts Guarantee.
Offer not valid on prior purchases and may not be combined with other offers.
Reliable and Professional Solutions for Every Season
Keeping your home’s most important systems running shouldn’t be a constant worry. Stan Gelber & Sons, Inc. Heating and Cooling delivers trusted HVAC and plumbing services throughout Long Island, including Hempstead, Huntington, Brookhaven, Islip, and nearby communities. Proudly serving Long Island since 1943, our team brings decades of local experience to every job, helping you maintain comfort, safety, and system efficiency all year round.
From summer cooling repairs to plumbing upgrades, we offer a full range of services to help you stay on top of your home’s needs. Whether it's regular maintenance or a same-day service call, we work with care, attention to detail, and practical solutions that last.
Whether it’s a routine tune-up or an unexpected problem, we’re just a call away. Contact us at (631) 906-7431 to book your service today.
Service That Puts Your Home First
Our service begins with fully trained, licensed, and insured professionals who know how to handle your system efficiently and safely. Every Stan Gelber & Sons, Inc. Heating and Cooling technician is ACE-certified and uses the latest tools and technology to ensure accurate diagnostics and repairs that meet the highest standards.
We're committed to clear communication, honest pricing, and minimal disruption to your home. Every service we provide is backed by the Service Experts Guarantee, which includes quality workmanship for your peace of mind.
Reliable and Smart Membership Plans
Owning a home comes with its share of surprises—but managing your HVAC and plumbing systems doesn’t have to be one of them. Our membership options offer Long Island homeowners straightforward, budget-friendly coverage for long-term peace of mind.
Service Experts Advantage Program™: Upgrade to high-efficiency HVAC equipment with no upfront costs. Coverage includes installation, parts, labor, seasonal tune-ups, and priority scheduling whenever you need it most.
Maintenance+ Membership: Keep your systems performing their best with annual maintenance, exclusive repair discounts, and priority appointment times—all designed to extend the life of your equipment and reduce unexpected costs.
Select the plan that fits the needs of your home, and let our team help you keep things simple and convenient for you.
Long-Standing Support for Long Island Homes Since 1943
For more than 80 years, Stan Gelber & Sons, Inc. Heating and Cooling has been a trusted name in home services across Long Island—from Huntington to Hempstead to Patchogue. We’ve worked closely with generations of homeowners to handle heating and cooling repairs, plumbing updates, and preventative maintenance.
From winter furnace checks to summer AC service, we’re here with timely, respectful support whenever you need it. Our understanding of Long Island homes and weather patterns helps us provide truly personalized service with a focus on reliability and safety.
Our Experts Make You Feel Right at Home
Creating comfortable, efficient homes with expert service and innovative solutions.
The Service Experts Guarantee
We promise that every piece of equipment we work on and install will be set up with care and precision—exactly as the manufacturer intended.
Fast Response, Anytime You Need Us
From heating to plumbing, we respond quickly to keep small issues from becoming big problems.
Licensed, Bonded & ACE-Certified Experts
Our nationally certified, ACE-certified professionals are licensed, bonded, and insured, delivering top-tier expert service with complete peace of mind.
Schedule Anytime, Day or Night
Book your appointment whenever it's convenient for you. Our scheduling and customer support are available 24 hours a day, 7 days a week.
Local Knowledge and National Resources for Complete Home Care
When choosing a home service provider, you want someone who knows your area—and is backed by proven experience. Stan Gelber & Sons, Inc. Heating and Cooling is proud to be supported by the national Service Experts network, which has been serving homeowners across North America since 1996. This connection gives us access to world-class training, equipment, and repair solutions, all delivered by our Uniondale-based technicians.
We’re familiar with the unique systems, homes, and seasonal needs across Suffolk and Nassau counties. No matter where you live—from Hempstead and Huntington to Islip and Smithtown—you’ll get reliable, locally focused service supported by the resources of a leading national brand.
"From JP, who gave us a reasonable and honest estimate, to Oscar, Walter, and Jose, who did the install, we were very pleased."
n
"Technician was good, both of them."
J
"He systematically went about his business in a friendly manner."
E
"He was on time, pleasant and explained what he was doing."
P
"Very professional and did a thorough check on the system before and after repairing the system."
D
"They are professional and were very attentive to detail."
T
"Very helpful and knowledgeable, prompt and courteous."
c
"Their price was competitive and the crew was friendly and did a great job."
J
"Jose was on time and did a thorough job."
R
"Ruben showed up on time for a maintenance call."
I
"He was very knowledgeable and professional."
D
"Yearly maintenance was very thorough."
L
"The technician knew what he was doing and solved the problem within a half hour."
E
"Manish, as always, was fantastic."
D
"Oscar and the team were professional, kind, and on time."
M
"They offer good equipment and excellent service. Any issues are always handled professionally and promptly."
A
"We highly recommend Stan Gelber & Sons Inc to anyone in need of HVAC services."
L
"He is very thorough, polite and a very hard worker."
I
"Timely, professional, and communicative."
E
"Walter was courteous and efficient."
K
"They were prompt, diligent, and very neat."
K
"Was highly professional and answered any questions I asked him."
k
"Miguel and Walter were very respectful and knowledgeable."
M
"The technician, Manish, was extremely thorough and friendly."
R
"Very rare I have a problem with my AC in season."
T
"I paid for top-of-the-line equipment and install and I feel that is exactly what I got."
M
"They were friendly, neat, and personal."
W
"They checked out the new equipment before leaving, and left the house neat and clean."
J
"I just had my AC unit serviced by Jose Castro with Stan Gelber."
E
"The technicians were prompt, knowledgeable, and courteous."
Very pleased with the work
From JP, who gave us a reasonable and honest estimate for an upstairs AC installation, to Oscar, Walter, and Jose, who did the install, we were very pleased with the work of this organization. Their experience and desire to please the customer was evident, as they came when they said and completed the job in two days, just as they promised. We would highly recommend them.
Technicians Were Good
Technician was good, both of them. First one and second one. Thank you.
He was right on time
The service man, Ruben Madrid, was right on time. He systematically went about his business in a friendly manner. Found and corrected the problem and gave me some tips about my unit that may help in the future.
Great experience
Jose Zelaya came to perform maintenance on my ductless heating/cooling unit. He was on time, pleasant and explained what he was doing. Great experience.
Very professional service
Very professional and did a thorough check on the system before and after repairing the system. Also had a nice verbal interaction with owners.
We highly recommend Gelber and Sons
We highly recommend Gelber and Sons. We did a new air conditioning system and an oil-to-gas boiler conversion. They are professional and were very attentive to detail. We were extremely happy with both and recommend Gelber without any hesitation.
Walter Was Excellent
Walter was excellent. Very helpful and knowledgeable. He was also prompt and courteous.
Competitive Price and Great Job
Stan Gelber recently replaced an entire two-zone heating and AC system in my house, including removing and rerouting my ductwork. This was quite a large project. Their price was competitive and the crew was friendly and did a great job. Thank you to JP, Walter and the team.
Jose was on time and thorough
Jose was on time, did a thorough job, and was very pleasant to do business with.
Excellent job done
Ruben showed up on time for a maintenance call on my central AC. Excellent job done.
Very Knowledgeable and Professional
Manish Patel came to service my system today. He was very knowledgeable and professional. He was able to discuss my problem and clearly explain the process to solve the issue.
Yearly Maintenance Was Very Thorough
Yearly maintenance was very thorough, including cleaning outside units. Very professional.
Don't hesitate to use them!
Our whole-house A/C was replaced by SG&S about 7 years ago. The system works great. This was our first service call, and they came as soon as they could. The technician knew what he was doing and solved the problem within a half hour. From our first call to the office to the field, everyone was pleasant to deal with and knew their stuff. We were kept informed by text, which was also very convenient. Don't hesitate to use them!
Manish was fantastic
Manish, as always, was fantastic, solved the problem right away!
Oscar and the team did an amazing job
Oscar and the team did an amazing job removing our 35-year-old gas boiler and hot water heater and replacing it with a whole new system. Oscar and the team were professional, kind, and on time. He explained all the newness in the system—what everything was and how things got updated. The system looks way more organized than the previous one, and I am looking forward to using it in the winter.
Excellent Service and Professional Technicians
Every technician I’ve encountered is professional, courteous, and on time. They offer good equipment and excellent service. Any issues are always handled professionally and promptly. Bobby, the service manager, has gone above and beyond to ensure customer satisfaction.
Excellent Experience with Stan Gelber & Sons Inc for AC Installation
Excellent Experience with Stan Gelber & Sons Inc for AC Installation
We were shopping around 5 different companies in our area to replace our 23-year-old A/C unit. Out of all the 5 companies that I got estimates from, they also had great reviews, but their prices were ridiculous and service dates were out of the picture for the wait time. We decided to go with Stan Gelber & Sons Inc because they were the best estimate and honest up front without any hassle, and they came and did our installation within 1 week of our decision.
We are extremely pleased with the entire process and the results.
From the initial consultation to the final installation, their team demonstrated professionalism and expertise. They helped us choose the right system for our home's size and our cooling needs, clearly explaining the options without any pressure.
Walter Gomez and his crew were punctual, efficient, and very respectful of our property. They worked diligently, ensuring a clean work area and minimizing disruption to our daily routine. They also took the time to walk us through the new system's operation and maintenance, which was very helpful.
Our new AC unit is working perfectly, providing consistent and comfortable cooling throughout our home. The quality of their work is evident, and we feel confident in the longevity and performance of the system they installed.
We highly recommend Stan Gelber & Sons Inc to anyone in need of HVAC services. Their commitment to customer satisfaction and the high standard of their work truly stand out. THANK YOU!!
He Is Very Thorough and Polite
I had Rueben Madrid as my technician. He is very thorough, polite and a very hard worker. He represents your company in a very positive way.
Timely, Professional, and Communicative
Manish Patel, our service provider for Gelber & Sons, was timely, professional, and communicative.
Walter was courteous and efficient
Walter was courteous and efficient. Arrived as scheduled for my annual tuneup.
Terrific long-term temporary solution
JP, the install manager, and Bobby, the service manager, did a terrific job coming up with a long-term temporary solution while we are waiting for backordered AC parts. They were prompt, diligent, and very neat. I could not recommend the two of them more. They are wonderful assets to the company!
Highly professional technician
Technician Jose Zelaya just left after servicing my system. Was highly professional and answered any questions I asked him.
Very respectful and knowledgeable
Miguel and Walter were very respectful and knowledgeable. They were also friendly and nice guys to be around. I definitely would tell anybody that needs HVAC work to call Gelber and Sons. Also, Bob from maintenance is so helpful as well. He is the person that helped me with a piece of equipment I needed for my house. Thank you. Karen Bilotto
Extremely thorough and friendly
We had our annual AC maintenance today. The technician, Manish, was extremely thorough and friendly. We stand by Stanley Gelber through and through. Two summers ago our AC capacitor broke and needed to be replaced. At that time we had a two-month-old baby and they sent someone immediately.
Very Thorough Annual Inspection
Very thorough annual inspection. Very rare I have a problem with my AC in season. Gelber has been maintaining my AC for years.
Top-of-the-line equipment and install
I contracted with Stan Gelber and Sons (whom I have never dealt with before) to replace a 24-year-old York A/C unit that gave up the ghost at the end of last summer. I chose to go with a top-of-the-line Bosch heat pump. Jose Canas and the team arrived on time and worked methodically from start to finish with precision. I was there the whole time, asked a lot of questions, and got thoughtful, understandable answers. Everything tested out just fine. I paid for top-of-the-line equipment and install and I feel that is exactly what I got. Although everything (heating, cooling) tested out fine, the true test will come when the outside temperatures are in the 80s and 90s for cooling and teens and 20s for heating. When the heating and cooling aspects were tested yesterday (5/6/2025), it was approximately 60 degrees Fahrenheit outside. So, while everything looks good at this point, the true test is yet to come. The team was respectful of my property and cleaned up to my satisfaction before departing. I did not have to ask them to do that. I would recommend Stan Gelber and Sons to my friends and family.
Deserve 5+ Stars
It was pouring rain when Ruben came for my yearly tune-up. He and his assistant immediately put on disposable shoes before coming into my house. They were friendly, neat, and personal. Completed tune-up with no hitches. Deserve 5+ stars.
Arrived on Time and Worked Efficiently
The Gelber crew arrived on time, worked efficiently and finished even sooner than we expected. They checked out the new equipment before leaving, and left the house neat and clean. Nice folks.
He did a great job
I just had my AC unit serviced by Jose Castro with Stan Gelber. He did a great job.
Prompt, Knowledgeable, and Courteous
The technicians were prompt, knowledgeable, and courteous. I have nothing but praise!
