Expert AC Installation Services in Quincy

Your commute to Boston takes 20 minutes. Your home should feel just as convenient when summer heat arrives.

You balance city access with community living every day. When your air conditioning fails to deliver, that balance breaks down. You’re left uncomfortable in your own space while temperatures climb and humidity settles in. At GEM Plumbing & Heating Services, LLC, we help Quincy homeowners get back to comfortable living.

Since 1949, we’ve been the trusted HVAC team that Massachusetts families call when their cooling systems need replacement. We match you with the right air conditioning system for your property and lifestyle, then install it with the care and precision that ensures lasting performance. You get reliable comfort without the stress of dealing with an unreliable contractor.

Don’t let another summer slip by with inadequate cooling. Contact us today about air conditioning installation in Quincy.

(833) 222-2953

GEM Technicial Inside Van


(833) 222-2953

We’re Right in the Neighborhood!

GEM operates throughout Quincy, serving homeowners in every neighborhood from North Quincy to Quincy Point.

You’ve likely seen our service vehicles around Massachusetts’ third-largest city, helping residents stay comfortable through every season. We understand the cooling needs of Quincy’s diverse housing, from historic Colonials in Merrymount to waterfront properties in Squantum and modern condominiums throughout the city. When you choose GEM for air conditioning installation in Quincy, you’re working with a team that knows the area and delivers reliable service when you need it.


Skilled employees

Trucks on the Road

Years in Business

Emergency Service


Our AC Installation Process

Getting a new air conditioning system installed should be simple and stress-free. GEM manages every detail from consultation through final testing, keeping the entire process clear and efficient for Quincy homeowners.

Book online or call at your convenience. Our extensive fleet allows us to offer same-day or next-day availability.

Our technician visits your Quincy home, assesses your cooling requirements, and provides clear, upfront pricing with no hidden fees or surprises.

Your NATE-certified technician installs your air conditioning system with exceptional care. You don’t need to worry about any of the details.

We test everything thoroughly before leaving, ensuring your new system operates perfectly. You’re ready for comfortable summer weather 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 8519 reviews
Jonathan was very neat and helpful with my emergency plumbing needs
GEM workers well qualified, friendly and extremely helpful. Installed two new units in one day – efficient and excellent work.
Honest and fair. Work was clean and well communicated. Response to issue was 24 hours. The three techs…Anthony, Brody, and Nick, were polite quiet clean work and communicated step by step… job well done.
Paul V from Carmine’s, arrived promptly and was very professional, knowledgeable, patient and has a great demeanor. He changed the control board of my HAVAC unit, and gave me great suggestions of the usage of it. Paul is very sincere and you can see his dedication to his work. I would definitely recommend Carmines and Paul V for any of your HAVAC needs.
Friendly, explained what was being done and what to watch out for.
Great job by David
Victor is the best. He fixed our clogged pipes and came out right away
Great service ! They were on time, respectful and took care of business quickly and efficiently
Lost our well water tank, great job with replacement. While here had them replace kitchen faucet and garbage disposal also. Will use GEM from now on!
Eric and Steve are great. Got the job done fast. Cleaned up. Terrific work.
We had 2 very old direct vent gas wall heaters replaced. Evan and Steve are the best. They explained everything and did a awesome job for never putting in these Rianni heaters . Kept me informed and answered all my questions and eased my concerns . Couldn't of asked for two better guys. The electrician and his assistant were outstanding with the fact the house was
built in 1925 with older wiring . Chen and his assistant installed 2 dedicated circuit for both heaters to run on and it works out great as now my air conditioner will run on the dedicated circuit this summer. Would recommend all of them for future heating needs .
We had the bathroom one downsized to a smaller unit with no issue what so ever even with them having to remove the bigger one they had put in they were happy to accommodate the issue
They are sweet, knowledgeable and quick. Thank you guys for an excellent job done, I appreciate it.
The gem guys could not have been any nicer. We had to leave and trusted them in our home alone.
Very professional and thorough. Serviced not only my mini-split but my air conditioner and checked my furnace and changed it's filter. Very happy.
The folks at Carmine's/GEM always do a great job👍 Anthony Pena did a great job checking the gas dryer connection and valve. Made sure everything was working properly and that there were no leaks.
Joan Martinez came to my house on an emergency call when my furnace/boiler broke down at 1 am. He diagnosed the issues and unfortunately I needed a new system. GEM installed the new system over the next two days. Everyone on the crew was excellent. I signed up for GEM’s maintenance program because if I had previously it would have prolonged the life of my furnace/boiler. Today Joan Martinez returned to do routine maintenance on my mini splits. He was very thorough and made sure the units are ready for the summer season. I highly recommend and trust Joan Martinez for any job.
Brody you were terrific! So knowledgeable. Appreciate that he showed what might be needed in the future. Thanks Gem Plumbing for sending him. Thanks for coming out Steve and servicing air conditioning and cleaning splits replacing filters as well as making sure it all works. I appreciate the prompt and friendly service. Sincerely I've
Anthony did a great job. He was very professional, friendly, and explained to us what he found and what was needed. Excellent service! Thank you!
Services were very good. Technician was very polite, respectful and knowledgeable. I was very pleased.
Thoughtful and shared every step.
David was friendly and knowledgeable.
Very good experience. Quality work, and professional.
David was very thorough and patient. He was determined to get us a resolution and even ensured he taught us on best practices and troubleshooting techniques.
Although, we had to drop a lot of money today. We are very appreciative of David Santiago and Colin D. David explained everything that was wrong with our system. Even tried to find a way to fix the disaster. Even though we both knew, it wasn't worth it. That's where Colin come in and broke the heart breaking news but helped us find options and worked with us. With that we are VERY thankful for you both! GEM has a life long customer. Thanks guys.
Alex did a great job and most importantly, gained the confidence of my wife. Not an insignificant accomplishment in the middle of major repairs that required shutting off water and not flushing toilets, etc. Thanks Alex!

GEM technician portrait in front of GEM service truck

(833) 222-2953

Warning Signs You Need a New AC System

Recognizing when your air conditioner needs replacement helps you avoid uncomfortable breakdowns during Quincy’s warmest weather.

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

When your system operates nonstop but can’t maintain comfortable temperatures, something has gone wrong. This pattern wastes energy, drives up utility costs, and leaves you uncomfortable in your own home. Quincy’s waterfront humidity makes cooling challenges worse for struggling systems. A new AC installation designed for these conditions becomes the most practical solution for your property.

A gentle hum when your system starts is normal. Loud grinding, persistent banging, or high-pitched squealing indicates mechanical problems that typically worsen with each cooling cycle. These noises usually mean worn components or mounting stress within your system. Replacing it with a newer, quieter model makes clear sense when sounds become disruptive.

Air conditioners generally function well for 12 to 15 years before efficiency naturally declines. Beyond this age range, systems lose both cooling capacity and energy efficiency even with regular maintenance. Contemporary technology delivers superior cooling while using less power. Replacing an older unit not only improves comfort but also provides the reliability of new, warranty-backed equipment.

Excessive moisture around your AC unit or musty odors when the system runs signal serious problems. These issues often indicate drainage failures or refrigerant leaks that compromise both performance and air quality. If your system produces these warning signs, replacement typically makes more sense than attempting repairs on aging equipment.

We Install All Types of Air Conditioners in Quincy

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

No matter which solution works best for your space, you’ll get expert guidance, professional installation in Quincy, and dependable performance from Massachusetts’ most trusted HVAC company.

Central air systems provide whole-home comfort, keeping every room evenly cool throughout summer. GEM installs high-efficiency central air conditioning in Quincy that integrates with your existing ductwork, delivering quiet operation, lower energy costs, and consistent cooling. These systems are ideal for single-family homes throughout Quincy and provide reliable comfort in every corner of your living space.

Heat pumps offer both heating and cooling from one efficient system, making them perfect for Massachusetts’ changing seasons. They move heat instead of creating it, providing year-round comfort while significantly reducing energy consumption. As a Mass Save® Heat Pump Installer, GEM helps you access rebates and incentives when you upgrade to heat pump installation in Quincy, making this advanced technology more accessible.

For properties without existing ductwork or rooms needing individual control, ductless mini-splits deliver flexible, efficient cooling. These sleek units let you manage temperatures room by room, putting comfort exactly where you need it. They’re perfect for Quincy’s condominiums, historic properties, additions, or converted spaces where running new ducts isn’t feasible.

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

For over 75 years, GEM has been the team Massachusetts families trust for reliable comfort and professional service.

When summer heat arrives in Quincy, your home should be your comfortable escape. We’re proud to help residents throughout every neighborhood with all of their air conditioning installation needs.

We’ve served Quincy and surrounding communities for generations, always treating customers with respect and care. GEM combines decades of expertise with modern equipment to deliver AC installations that stand the test of time.

With one of New England’s largest service fleets, we’re always close by when you need us. GEM provides same-day service and efficient air conditioning installation in Quincy to ensure your home stays comfortable without unnecessary waiting.

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

Our NATE-certified professionals bring the highest level of training and care to every job. We treat your property with respect, prioritize your safety and comfort, and ensure every installation meets exacting standards for performance and reliability.

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 simplify the savings process while upgrading your comfort.

Our Home Comfort Club maintains your AC in peak condition through regular inspections, tune-ups, and exclusive member benefits. It’s the simplest way to protect your investment and ensure 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 Quincy

Make summer comfort a priority for your Quincy home.

GEM’s licensed HVAC team stands ready to install the perfect air conditioning system in Quincy. With same-day availability, flexible financing, and 75+ years of trusted local service, we make it easy to reduce energy costs and enjoy lasting comfort all summer long. Contact us by phone or online now to schedule your consultation!

GEM technician in front of service truck


Other HVAC Services You May Need


Air Conditioner Installation FAQs

How long does an air conditioning installation take?

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

What’s the best type of air conditioner for Quincy homes?

The best system depends on your property’s size, layout, and energy goals. Quincy’s diverse housing stock means different properties have different needs. A GEM technician can help you choose between central air, heat pumps, or ductless mini-splits to find the right fit for your space.

Can GEM install air conditioning in older Quincy properties?

Yes. Many of Quincy’s historic homes and converted properties don’t have existing ductwork, making ductless mini-splits or high-velocity systems excellent options. GEM specializes in finding modern solutions that work with your property’s character while delivering reliable cooling.

How soon can I schedule my AC installation in Quincy?

With our 500-truck fleet and local Massachusetts team, GEM often provides same-day or next-day installation. Call our customer care team or book online to schedule your free estimate and get comfortable fast.

Are rebates available for AC systems in Quincy?

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 helps you apply and maximize your savings.

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