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 9097 reviews
Today I had a replacement AC UNIT installed by two GEM technicians. The hole experience from beginning to end was great. The two techs arrived on time, got wright to work all through the process I was updated. There professionalism was greatly appreciated. I would recommend GEM, when and If the need for a new unit happens.
Responded quickly to call and resolved issue quickly.
Excellent and responsive
Steve Gray was very professional. He determined the problem right away, explained the issue in detail and we had our air conditioner fixed and running perfectly. Thank you Gem, once again for your prompt service!
Nick came out at 1:30 in the morning to fix a main water line blockage. Worked quickly to get resolved. So thankful!
Scott was patient and an excellent plumber. Thank you again for a wonderful experience.
Showed up right as scheduled and expedited repairs immediately!!!! Tech was extremely knowledgeable, efficient and awesome! 5 Stahs all around!
Nick was extremely helpful and honest. I hope Nick will assist during GEMs next visit.
They just came for an estimate but they were on time, very friendly and respectful. They answered all my questions. I didn’t pay for the estimate but I had to put something at the bottom. Thank you
Aiden Bradley-Main of GEM HVAC was a consummate professional. He communicated clearly, instilled confidence, and got the job done well. He gets my highest recommendation.
Efficient, on time, good diagnosticians, affable staff… but costly!
David Salvatore was prompt, professional, and pleasant. He diagnosed my air conditioning issue and solved it quickly on the same day!
GEM staff rxceedrd my expectations in ensuring that we were "completely" satisfied with their work. I am extremely satisfied with both their communication as well as their work. Job well done GEM!!!
Douglas was friendly, polite and knowledgeable. He made a few suggestions for my hvac and was going to email some updated parts I should consider to add and install. I have not yet received the email. Overall he did a good job.
Great having GEM here for Installation of heating system – From start to finish : With Tim and Rob making the plans, with Jacob and Eric and Gennarro taking care of all the plumbing and figuring things out in our old house – very professional, got the job done in a helpful and timely and efficient way: helping me feel ready this year well ahead of the heating season, Thank you Gem!
Abraham was very professional and finished the job same day even after encountering some obstacles to do it. He answered all my questions and was very helpful
Nicole Tradd was fantastic today. I had a leak in a copper pipe (on a Sat) and Nicole came out to house and had everything fixed in no time at all. Very satisfied with her work. Thank you.
Service was quick and complete and very fairly priced.
Great communicator. Knowledgeable.
Aaron Neal was very professional and thorough. He diagnosed the problem, explained it to us, and followed with ordering the part to return and install. I highly recommend Aaron for his knowledge and customer service.
He worked in the job from 8 – 10 pm to restore our air conditioning during the recent heat wave.
Excellent service in every respect: starting with the salesperson, Peter Dallas; Sean, the installation coordinator; and, of course, the installers Joe & Cristar!!
Pete was extremely professional, friendly, understanding and very flexible when negotiating the final price.
After 28 years of using a Lennox central heating and air conditioning system, we decided was time to get new systems and we went with Carrier this time, a highly respected brand too backed by GEM Plumbing as a certified provider. Both the sales process and the speed of the installation were incredibly efficient. We spoke with Peter on a Tuesday morning , and by 3:00 p.m. on Friday of same week the installation was complete. We were lucky enough to have Joe Medeiros and Cristar Fig from GEM as our technicians!
Let me tell you, this duo is exceptional! They are very young but possess extensive knowledge and a fantastic attitude. I was truly impressed by their technical work and their courtesy. These two technicians are a great asset to GEM and WE would love them to be recognized! We are very happy at home; the air conditioning system works wonderfully! And We can’t wait to use this coming winter our new furnace too!
Thanks to Peter, Sean, Joe, and Cristar for their amazing job!!
Sincerely
Mary
ALecs Reyes was the best!!! Extremely knowledgeable and professional. He turned our terrible experience with our last contractor into a positive outcome . I will add that he was a fantastic mentor to the helper he brought along today. ALecs is the kind of employee every business owner searches for….Good luck in your career at Gem Alec’s!!!
Great service and very personable rep. I am very happy that I contacted GEM.
Nicole was great. Super nice, super helpful and quick. I wish I was as effusive about the exorbitant prices that GEM charges.
Super great people and service!

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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