Expert AC Installation Services in Wellesley

Your Wellesley home should feel as comfortable as it looks.

From Wellesley Hills to the neighborhoods near Wellesley Square, exceptional homes deserve exceptional cooling. When your air conditioning system can’t maintain the comfort you expect, it’s time for an upgrade that performs at the level your property deserves.

At GEM Plumbing & Heating Services, LLC, we solve cooling problems for Wellesley homeowners. Our licensed HVAC team assesses your home’s cooling needs, recommends the right system for your space, and handles every installation with precision.

You get dependable performance from a team that’s served Metro West families for over 75 years. Take the next step toward better comfort. Call us today about air conditioning installation in Wellesley.

(833) 222-2953

GEM Technicial Inside Van


(833) 222-2953

We’re Right in the Neighborhood!

GEM has been serving Wellesley families since before the Massachusetts Turnpike extended through town.

That’s over 75 years of local experience. We know Metro West summers, we know Wellesley’s housing, and we know what reliable cooling looks like in homes from Wellesley Hills to the properties near Wellesley Square. Your neighbors have trusted us for generations because we deliver results that last. When you call GEM for air conditioning installation in Wellesley, you’re working with the team that’s been getting it right since 1949.


Skilled employees

Trucks on the Road

Years in Business

Emergency Service


Our AC Installation Process

Installing your new air conditioning system should be seamless and straightforward. GEM handles every detail with professionalism and care, making the entire process clear from consultation through final testing.

Book online or call when it works for you. With our large service fleet, we typically offer same-day or next-day availability.

Our technician evaluates your Wellesley home’s cooling needs and provides clear pricing with zero hidden charges or unexpected fees.

Your NATE-certified technician installs your air conditioning system safely and professionally. You don’t need to manage any of the details.

We thoroughly test your new system before we leave, ensuring everything operates perfectly. You’re prepared for comfortable summer months ahead.

Female Gem Plumbing u0026 Heating employee sitting at a desk smiling

(833) 222-2953


What Our Customers Are Saying

100% Satisfaction Guarantee

4.6
Based on 8316 reviews
John Phelan
Prompt and professional service. Explained the process and provided follow up after the service was done. Very pleased with everything.
Lori Marchand
Great people and fast!
David Silva
Personable, Helpfull, Proffessional, Thank You!
Petra Jenkins
Excellent and professional service. Assisted in multiple ways to get the furnace working. Very friendly and helpful. Highly recommend.
Kathleen Allen
Joseph and Dan were Knowledgeable and personable! They explained what was being done and went out of their way to complete the job in good time!! Well worth the money spent!
Anne Carty
So we had a major plumbing disaster that we discovered this morning. Another plumber we tried did not have availability all week. We called Gem and they came out within a few hours. They got right to the issue and diagnosed it. They stopped the leak, so that was a huge relief! Then they referred us to another person from their company who would follow up and take a look at the equipment to see if we need repairs or replacing.
That person is coming this afternoon.On top of that, we had damage to our walls and they recommended a second company that they work in tandem with who is coming tomorrow morning.
All this networking saved us a lot of time and frustration looking for people to solve these issues! Jim and Dan, who came today, were incredibly efficient, very good at communicating and also very pleasant to deal with. Plumbing issues are not fun, but they managed to make it easy and smooth and I am so grateful!
Also, here’s a follow up: Ricky also came and gave me the quote for the boiler and installation. He not only installs these types of equipment, but he also knows how to explain how everything works to the client. He did an excellent job telling me what went wrong and how to troubleshoot it in a way I could understand! He was extremely conscientious and made sure I followed his explanation carefully. Next the plumbers came, and Jacob did an incredible job with his assistant Steve. They were very respectful of my property. They got things done in a timely fashion. I now have heat which was a major factor in this whole incident. Another valve had to be installed on a different floor and a plumber took care of that. Then they sent an Electrician when it came time to install the thermostat. All of these contractors worked in tandem. Lastly, the people who came to clean up the house and make repairs on the walls were also in the loop and referred to by Gem. they also were very respectful and did a really good job in a time saving manner. Before leaving, the plumbers made sure that the new valve which was put in nor the old radiator were not causing any leaks so this wouldn’t happen again in the future So am through the worst with my new boiler working this morning. I feel confident that my old house is in good hands now. Thank you Gem and Cleanworks!
owen winkler
Christopher showed up on time and did a very good job repairing our leaking water leak
Bob Ruggiero
On time arrival… Even early! Friendly and got straight to work with the maintenance. Reviewed everything when done and we were very pleased. V 😄
Shirley Connor
Always very pleased with Gem’s service. My experience several times has been with David and he has been thorough, answered all my questions. Definitely deserves 5 stars
Allen Engelhardt
Absolutely stellar – Nicholas and Danny took care of us right away, super quick response, fixed us up and went above and beyond with a leak caused by a faulty fridge. Highly recommend!
Valerie Smith
GEM serviced our heating system. They were prompt, professional, thorough and neat. We are completely pleased with GEM and highly recommend their company.
Paul Iorio
Nicholas was prompt and provided a fix with explanation.
melvinfish seller
Seamless replacement by Caio Mayer Even corrected defects from old installation ie acid condensate to a special pump. In addition electricians installed ground fault outlets and an arc fault breaker
Kat Myles
Another excellent experience with Gem yesterday! Everyone I spoke with and met with was informative, patient, professional and prompt. Michael H. Came to my home to work on my furnace-he did a great job, explained everything before and while he was doing the work, made sure everything was done to my satisfaction and answered all my questions. Highly recommend!
Victor Pricolo
Joseph H. was punctual, professional, competent and courteous. He quickly identified the problem and fixed it. I am extremely satisfied with the experience.
Bob Slott
Douglas was courteous and efficient.
James Yoder
The guys worked hard to service our 3 heatpumps.
Nancy Chane
Annual maintenance of my one year old air conditioner. Wonderful man made the visit. Everything is fine. Will have my brand new furnace serviced in the fall. Very satisfied with both furnace and air conditioner.
barbara mccloud
The technicians were polite and through. While they were here they checked the system also. Thank you
Carol Mansen
They were very good
Barry Morris
I had a power outage that resulted in pipes freezing and multiple bursts including the water meter, which required the town to repair.Alec told me what to do and returned to take care of the other pipes that had burst. He was prompt, explained everything and I’m very happy with GEM’s service.
Had a receptacle outlet put in outside very reasonable priced highly recommended this company will use again plug was to advanced for me to do all new wiring put in outside and explained to me thank you gem we’re safe and my house is too
Ruth Robino
Estimate
Stephen Briganti
Highly recommend GEM for all home plumbing and heating needs. We've contracted GEM for a couple projects, and service in both maintenance and repair scenarios, across trades. GEM's team is universally knowledgeable and courteous, and it's very nice having a single point of contact for multiple disciplines. They execute projects efficiently, with individuals that clearly take pride in their work.
Kim Alessandro
Xavier is always professional and personable. He and his apprentice have been to my home twice now, and have been a pleasure both times.
Brody And his coworker were great! The GEM techs are awesome.

GEM technician portrait in front of GEM service truck

(833) 222-2953

Warning Signs You Need a New AC System

Understanding when your air conditioner needs replacement helps you avoid emergency failures during Wellesley’s warmest weather.

Pay attention to these indicators that it’s time to consider a new air conditioning installation.

Water pooling around your indoor unit or excessive moisture in your home indicates serious drainage or refrigerant issues. These problems don’t just affect performance; they can damage your property and create conditions for mold growth. When your AC produces persistent moisture problems, the underlying issues typically worsen over time. Replacing the system with modern equipment solves the problem completely and protects your home.

When air barely flows through your vents despite the system running, something has failed within your AC. Weak airflow makes cooling ineffective and forces your system to operate continuously without achieving comfortable temperatures. This poor performance usually indicates compressor failure or ductwork problems that worsen with continued use. A new installation designed for your home’s requirements restores proper airflow and consistent comfort.

Air conditioners generally function well for 12 to 16 years before efficiency naturally declines. Once your system reaches this age range, replacement usually makes better financial sense than ongoing repairs. Today’s AC technology provides superior cooling while using significantly less energy. Installing a new system improves both comfort and efficiency while giving you equipment backed by manufacturer warranties.

Rising electric bills despite unchanged cooling habits signal declining efficiency. Aging systems consume more power to maintain comfortable temperatures, especially during peak summer conditions. Modern air conditioning systems are engineered to operate far more efficiently, using substantially less energy while delivering better cooling performance. Upgrading typically lowers monthly expenses while improving overall home comfort.

We Install All Types of Air Conditioners in Wellesley

Every Wellesley property has unique cooling needs, and GEM offers energy-efficient systems to match your requirements.

Whatever solution works best for your home, you’ll receive expert recommendations, professional installation in Wellesley, and lasting reliability from Massachusetts’ most trusted HVAC company.

For comprehensive whole-home cooling, central air systems maintain even temperatures throughout every room. GEM installs high-efficiency central air conditioning in Wellesley that works seamlessly with your existing ductwork, providing quiet operation, lower energy costs, and consistent performance. These systems are perfect for Wellesley’s single-family homes and deliver reliable comfort throughout your entire living space.

Heat pumps provide both heating and cooling from one efficient system, making them ideal for Massachusetts’ varied climate. They transfer heat rather than generating it, offering year-round comfort with substantial energy savings. As a Mass Save® Heat Pump Installer, GEM helps you access rebates and incentives when you upgrade to heat pump installation in Wellesley, making this efficient technology more affordable.

For homes without existing ductwork or areas needing individual temperature control, ductless mini-splits offer flexible, efficient cooling. These sleek units let you manage temperatures room by room, delivering comfort exactly where you need it. They’re ideal for Wellesley properties with additions, historic homes, or finished spaces where installing traditional ductwork isn’t practical.

GEM: Proud to be Wellesley’s Trusted AC Installation Company Since 1949

For more than 75 years, GEM has been the HVAC company Metro West families trust for reliable comfort and honest service.

When summer heat and humidity arrive in Wellesley, your home should provide the cool sanctuary you need. We’re proud to help families throughout every neighborhood with all of their air conditioning installation needs.

We’ve served Wellesley and surrounding Metro West communities for generations, treating every customer with care and respect. GEM brings proven expertise and modern technology to every AC installation, delivering systems built for lasting performance.

With one of the largest service fleets in New England, we’re always nearby when you need us. GEM provides same-day service and efficient air conditioning installation in Wellesley to keep your home comfortable without extended delays.

We’re more than an air conditioning company. From plumbing and electrical services to comprehensive HVAC maintenance, GEM offers complete solutions to keep every system in your home operating properly.

Our NATE-certified professionals bring exceptional training and professionalism to every installation. We treat your home with respect, prioritize your safety and comfort, and ensure every installation is precise, safe, and built for reliable long-term operation.

As a Mass Save® Heat Pump Installer, Carrier Factory Authorized Dealer, and National Grid Value Plus Installer, GEM helps you access valuable rebates and incentives when installing energy-efficient cooling systems. We make saving money simple while upgrading your home’s comfort.

Our Home Comfort Club keeps your AC operating at peak performance through regular inspections, tune-ups, and exclusive member benefits. It’s the easiest way to protect your investment and maintain reliable comfort throughout every season.

Smart thermostat installation by GEM HVAC technician

(833) 222-2953


customer and technician interaction

Our GEM Family Cares for Your System’s Entire Life

Your air conditioner works hard every summer. Regular maintenance keeps it running efficiently, quietly, and reliably for years to come.

Our Home Comfort Club makes maintenance easy with annual tune-ups, priority scheduling, and discounts on repairs. We catch problems before they become emergencies and keep your system running the way it should, year after year.


Contact GEM for New Air Conditioner Installation Services in Wellesley

Make this summer different.

GEM’s licensed HVAC team is ready to install the ideal air conditioning system for your Wellesley home and the surrounding Metro West area. With same-day availability, flexible financing, and 75+ years of trusted local service, we make it easy to lower your energy costs and enjoy lasting comfort all summer long. Contact us by phone or online today to get started!

GEM technician in front of service truck


Other HVAC Services You May Need


Air Conditioner Installation FAQs

What’s the average lifespan of a new air conditioning system?

With proper maintenance, most air conditioners last 12 to 15 years. Enrolling in GEM’s Home Comfort Club helps extend your system’s life with annual tune-ups, priority service, and expert care that keeps your AC running at its best.

Can GEM install air conditioning in older Wellesley properties?

Absolutely. Many of Wellesley’s historic homes don’t have existing ductwork, making ductless mini-splits or high-velocity systems excellent options. GEM specializes in finding modern solutions that preserve your home’s character while keeping you comfortable.

How long does an air conditioning installation take?

Most standard installations can be completed in one day. More complex projects, such as installing multiple systems or adding ductwork, may take longer. GEM’s team works efficiently and keeps you updated throughout the process.

Are rebates available for AC systems in Wellesley?

Yes! GEM participates in programs through National Grid and Mass Save® to help you access rebates and special financing for high-efficiency air conditioners and heat pumps. Our team will help you apply and maximize your savings on your new system.

What size air conditioner does my Wellesley home need?

The correct AC size depends on your home’s square footage, layout, insulation, and sun exposure. Wellesley’s diverse housing stock means each property has unique requirements. GEM’s licensed HVAC technicians perform a detailed load calculation to ensure your system is perfectly sized for optimal comfort and efficiency.

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