4.6
Based on 8903 reviews
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Carrier Residential Factory Authorized Dealer
North American Technician Excellence - NATE - Certifying the Finest in HVACR
Mass Save | Heat Pump Installer

When Your Lexington Home Needs Professional Help

When something goes wrong in your Lexington home, you need it fixed quickly and carefully so your family can get back to normal and your home stays protected.

Whether it is uneven heat in an older colonial, a plumbing issue in a busy family bathroom, or an electrical concern in a home office, problems in a Lexington home feel urgent because they disrupt daily routines and raise questions about how repairs will affect your space. Lexington homes range from historic properties near Battle Green to updated family houses on quiet streets, but all need systems that work reliably through New England seasons.

GEM Plumbing & Heating Services, LLC provides heating, cooling, plumbing, and electrical services in Lexington, MA with technicians who respect your time, your home, and its character. When your home needs help, call GEM.

Years in Business

Skilled employees

Emergency Service

Trucks on the Road


(833) 222-2953

Service That Respects Lexington’s Heritage

Lexington homeowners maintain properties of exceptional quality and historic significance. GEM delivers service worthy of that responsibility.

Colonial homes, Victorian properties, and architecturally significant residences all require technicians who understand careful workmanship. Our professionals arrive prepared, work meticulously, and provide solutions that protect your investment. When your Lexington home needs attention, you deserve service that honors what makes your property special.


Why Lexington Homeowners Choose GEM

Carrier Factory Authorized Dealer and National Grid certifications demonstrate our commitment to the quality Lexington homeowners expect.

Your schedule matters. We respond quickly and work efficiently throughout Lexington.

Over 75 years serving New England’s most discerning families who expect excellence from their service providers.

Colonial homes, antique properties, and architecturally significant residences all receive the careful attention they deserve.

Members receive priority scheduling, maintenance discounts, and regular service that protects system performance.

Every GEM technician, plumber, and electrician maintains proper licensing, passes background checks, and holds NATE certification.

Our 500-vehicle fleet serves Lexington and surrounding communities with reliable response times.

Lexington’s accessible location places it conveniently within our standard service territory.


Getting the Help You Need Is Simple

Professional service should involve clear communication and transparent pricing.

GEM serves Lexington with straightforward processes. Call, schedule, receive quality work.

Call or book online. We accommodate Lexington schedules with flexible appointment times and same-day availability.

Your technician evaluates the situation, explains findings clearly, and provides pricing before beginning work.

We complete repairs properly, protect your floors and furnishings, and confirm everything functions before leaving.

GEM technician smiling inside residential kitchen during service call

(833) 222-2953

What Our Customers Are Saying

100% Satisfaction Guarantee

4.6
Based on 8895 reviews
GEM plumbing recently installed a ductless minisplit system in my home. The installers did an excellent job. They were extremely knowledgeable, courteous, and patient. They communicated with me every step of the way and took the time to answer all of my questions. The system is working beautifully. If you are looking for a contractor to install a ductless minisplit system, I highly recommend GEM plumbing.
I do wish it hadn’t been so expensive, but I will say I really did feel like my technician understood what he was doing. He was knowledgeable and professional. He explained things well and I’d be happy to work with him again.
William (Bill) and Antony arrived promptly and serviced my boiler system – everything is up and running smoothly (and the hot water is back).!
Dory was friendly, respectful, and went above and beyond!
Omar did an excellent job installing our central air conditioning system. Very efficient and friendly. He got the system up and running quickly and had a great attitude. Kept the house neat while cutting holes in the ceiling for vents. An all around positive experience.
Steve R was amazing and was super helpful and kind 10/10 would welcome back!!
Eliceo from Gem is a professional skilled technician. He explained the installation process and was organized and neat.
Very efficient and focused. They were in and out in no time.
Great job. Very helpful explaining what the problem and what to expect from the repair. Highly recommend Gem.
Walter and Anthony did a great job!
1st time using GEM for plumbing. Process was smooth, the workers were professional and diligent and kept me up to date the entire process. I highly recommend their services
Right on time, very knowledgeable about the issues I had. Great job fixing the leaks I had at home. No doubt I would recommend their service. Thank you Abraham.
Nice people, quick to respond and knowledgeable. Highly recommend them for emergencies. William T. was great, thank so much
First maintenance on our Generac. All went very smoothly!! Arrived within timeframe provided and even informed on actual arrival that day!
Very polite gentleman who went right to work, provided an update once maintenance was completed and explained basic process performed.
David S, our GEM technician was on time, respectful of our home and provided us with a thorough explanation of our GEM service contract and the scope of work completed and recommended. I would highly recommend him again!
Alec and Scott made quick work of what turned out to be a simple solution. Very efficient, pleasant and explained the issue and recommendation clearly.
Both service calls to my house were with Nick, and I can't say enough good things about him. He's professional, courteous, communicative, and thorough. My only hiccup with Gem has been conflicting information from the office, but even with hiccups the staff have been professional and friendly. Thank you, Gem! You're the best, Nick!
great guy! vaery talented and professional
Joseph (Junior) from GEM Plumbing & Heating came out to do a check on our HVAC system for this season. He was very thorough, knowledgeable, and honest. Our system is in great shape after 16 years. Thank you Joe!!! We were on a contract plan, which was very reasonable, so we paid nothing at the time of service.
Our tech was Joseph (junior), Incredible experience came out the same day.Billed me for the service. Exceptional diagnostics, developed a number of options to fix the problem. We called four other places.First three never showed one showed and walked away, without figuring anything out. Our A/C has been out for 6 wks waiting for people to not show up. YOU ABSOLUTELY MUST CALL GEM FIRST
GEM responded very quickly. I was out of state when my tenant called stating the A/c system wasn't working. I called GEM to see if they would be willing to help me. I didn't have an account with them but they were more than willing to assist me with my broken A/C system.
Nick the technician was very knowledgeable and worked with me while I was out of state and with my tenants. He articulated very well, explaining all the issues, what the repair process would involve and the cost. There were no surprises. My tenants informed me that Nick was terrific !
Nick got the system up and running. Overall, it was a very positive experience and I would highly recommend GEM to anyone.
Great service. Timely response and got the job done. It’s on the pricey side but that’s expected given their quick response time. Joe was particularly good and have had him out twice on our property. Thanks!
From beginning to end the experience was amazing. It started with my man Walter who calmly with humor explained the process and my guys Ben and his partner who took cared of me and my family. They were professional and very knowledgeable about the process. Their patience when not finding my well was welcome. Awesome job
Thank you
The people are nice, punctual, pleasant.
And best of all great prices. I'm very happy with the service.
I was very impressed with Dory . He was extremely knowledgeable and very helpful.

customer and technician interaction

Peace of Mind, Worry-Free

Maintaining your home can be stressful. Let us help.

Preserve your home’s value, extend your equipment’s life span, and ease your worries with our membership plans.

Well-maintained systems run better, last longer, and save you money on energy bills. Regular care prevents breakdowns, extends equipment life, and keeps your home comfortable year-round. When it’s time to sell, buyers notice homes with documented maintenance history.

Lexington homes do not fail at convenient times, and when your property represents generations of careful stewardship, after-hours emergencies require a team you can trust. That is why our technicians are on call day and night, responding throughout the town center, along Massachusetts Avenue, in the neighborhoods near Minute Man National Historical Park, and every corner of this historic community. We understand what a heating failure means in a home with original plaster and irreplaceable woodwork, how critical it is to protect hardwood floors when addressing a plumbing emergency, and why it matters to work thoughtfully in buildings that have witnessed American history. We navigate the winding roads, respect the mature landscaping, and arrive prepared to solve problems without creating new ones. Whether a winter storm stresses aging systems, summer humidity overwhelms your comfort equipment, or a plumbing emergency threatens valuable finishes, you have a team that already knows Lexington’s exceptional housing stock and the proper approach for significant properties. When something goes wrong, you’re never facing it alone.

With us, you can spend less money to take better care of your home.

Membership plans pay for themselves. You get discounted rates on service, priority scheduling when problems happen, and regular maintenance that prevents expensive emergency repairs. Efficient systems cost less to run, and catching issues early saves you from major expenses down the road.

Keep all parts of your home operating at peak efficiency with regular maintenance tune-ups.

Your HVAC, plumbing, and electrical systems work together to keep your home running. Regular tune-ups ensure everything operates efficiently, safely, and reliably. We inspect, clean, and adjust systems before problems start, so you avoid breakdowns when you need your systems most.


GEM HVAC technician standing in front of service van

Heating and Cooling Services in Lexington, MA

Lexington winters demand reliable heating, and humid Massachusetts summers make air conditioning valuable for comfortable living in historic homes.

GEM provides comprehensive HVAC services throughout Lexington, from emergency repairs to system upgrades.

(833) 222-2953

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Air Conditioning Services in Lexington

Humid summers make air conditioning valuable for comfortable Lexington living, especially in homes with limited natural ventilation.

Our cooling technicians keep your system running through heat waves with responsive service.

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Furnaces for Lexington Homes

When your furnace fails and the temperature starts dropping in a historic home, you need technicians who respond promptly and work carefully.

GEM’s heating specialists restore warmth to homes throughout town with expertise across furnace types and brands.

  • Furnace Installation: We size and install furnaces matched to your Lexington home’s heating requirements and quality standards.
  • Furnace Replacement: When furnaces reach end of service life, we help select equipment that meets your comfort expectations.
  • Furnace Repair: Ignition problems, blower malfunctions, and heat distribution issues all respond to our diagnostic expertise.
  • Furnace Maintenance: Annual service maintains efficiency and catches developing problems before they cause disruption.
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Ductless Mini-Splits

Lexington’s historic homes benefit from ductless systems that provide modern comfort without compromising original architecture.

GEM’s ductless specialists design and install systems that heat and cool efficiently while preserving your home’s character.

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Heat Pumps

Heat pumps provide efficient year-round comfort, increasingly popular with Lexington homeowners seeking sustainable options.

GEM helps Lexington families maximize heat pump benefits through proper installation and maintenance.

  • Heat Pump Installation: We configure heat pump systems for optimal performance while respecting your property’s aesthetics.
  • Heat Pump Replacement: Current heat pump technology offers significant improvements over older units.
  • Heat Pump Repair: Mode switching problems and output issues indicate conditions our technicians resolve effectively.
  • Heat Pump Maintenance: Regular service maintains efficiency and extends equipment lifespan.
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Boilers

Boiler heat serves many Lexington homes, providing reliable warmth through original radiators and baseboard systems in established properties.

GEM’s heating team provides comprehensive boiler services for safe, efficient operation.

  • Boiler Installation: We install boilers matched to your home’s existing heat distribution configuration.
  • Boiler Repair: Pressure problems, leaks, and circulation issues all fall within our expertise.
  • Boiler Maintenance: Annual service maintains safety, efficiency, and reliability throughout the heating season.
A piggy bank represents Mass Save rebate savings

Oil-to-Gas Conversions

Where natural gas service reaches your Lexington property, converting from oil can simplify maintenance and reduce costs.

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Radiant Heating Systems

Radiant floor heat provides even warmth without drafts, an option for Lexington homes undergoing thoughtful renovation.

GEM installs and maintains radiant systems throughout town.

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Indoor Air Quality Solutions

Lexington’s historic homes and wooded setting create air quality considerations many homeowners address with treatment systems.

GEM offers filtration, purification, and humidity control that improves indoor air quality throughout your Lexington home.

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Thermostats & Smart Home Devices

Smart thermostats provide control and efficiency benefits that integrate modern convenience with historic homes.

GEM installs connected devices that modernize comfort management.

GEM Plumbing Heating Cooling u0026 Electrical branded technician portrait

Plumbing Services in Lexington, MA

Your plumbing should work without you thinking about it. GEM provides trusted plumbing services to our Lexington neighbors.

From emergency repairs to thoughtful renovations, GEM’s licensed plumbers handle every plumbing challenge Lexington’s quality homes present.

(833) 222-2953

Drain Cleaning Icon

Drain Clog Removal & Sewer Services in Lexington

Slow drains and blockages disrupt household routines and require professional clearing.

GEM’s drain specialists restore proper flow throughout your plumbing system.

  • Kitchen Drains: Grease accumulation and food debris create kitchen drain clogs we clear effectively.
  • Bathroom Drains: Hair, soap residue, and mineral buildup respond to professional drain clearing techniques.
  • Basement and Utility Drains: Floor drains collect debris and sediment that cause backup during storms if not cleaned regularly.
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Hydro Jetting

When standard drain clearing can’t remove stubborn blockages, hydro jetting scours pipe interiors with high-pressure water.

This service removes grease accumulation and root intrusion from Lexington drain lines, restoring full flow capacity.

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Plumbing Leaks

Water stains, musty odors, and unexpected moisture often signal hidden leaks causing ongoing damage.

In Lexington’s fine housing stock, aging connections develop leaks that threaten irreplaceable finishes. Our technicians locate leaks precisely and complete permanent repairs.

Water Heaters

Water Heater Repair & Replacement

When your water heater fails and guests are expected, you need fast service from technicians who work carefully.

GEM provides Lexington homeowners with complete water heater services from diagnosis to installation.

  • Traditional Water Heater Installation: We install tank units sized for your household’s hot water requirements.
  • Traditional Water Heater Replacement: When repair isn’t practical, we remove old equipment and install appropriate replacements.
  • Traditional Water Heater Repair: Temperature inconsistencies, leaks, and unusual noises all indicate conditions we can address.
  • Traditional Water Heater Maintenance: Regular service extends tank life and maintains efficiency.
  • Tankless Water Heater Installation: Endless hot water and compact footprint make tankless units popular in Lexington homes.
  • Tankless Water Heater Replacement: When tankless units age out, we install current models with improved features.
  • Tankless Water Heater Repair: Error codes and temperature problems indicate issues we can resolve.
  • Tankless Water Heater Maintenance: Annual service maintains tankless performance.
Water Treatment Icon

Water Filtration & Water Quality Improvements

Lexington water quality benefits from treatment systems that address hardness and impurities.

GEM installs and services water treatment equipment throughout town.

  • Water Purifier System Installation: Whole-home filtration improves water quality at every tap and appliance.
  • Water Softener Installation: Soft water prevents scale buildup and extends plumbing system life.
  • Water Softener Maintenance: Regular service keeps softening systems functioning properly.
  • Water Softener Repair: When softeners malfunction, we diagnose and correct problems promptly.
  • Water Softener Replacement: Aging softeners lose effectiveness and benefit from replacement.
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Well System & Well Pump Repair

Some Lexington properties rely on private wells for water supply. GEM provides well pump installation, repair, and replacement to maintain reliable water flow for these homes.

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Kitchen & Bath Remodels

Outdated plumbing affects both function and aesthetics in Lexington’s quality homes.

Dated fixtures, inefficient configurations, and aging supply lines indicate systems ready for thoughtful upgrades. GEM’s plumbers install fixtures that complement your home’s character while meeting modern standards.

  • Kitchen Faucets
  • Bathroom Faucets & Toilets
  • Garbage Disposal
  • Hot Water Dispenser
  • Drinking Water Filter
  • Appliance Hook Up
  • Cooking Upgrades
  • Spa Bathroom
Maintenance Icon

Sump Pumps

Properties in low-lying Lexington areas benefit from working sump pump protection.

GEM keeps these important systems ready when groundwater rises.

  • Sump Pump Installation: We install pumps with capacity matched to your property’s water intrusion patterns.
  • Sump Pump Replacement: When pumps fail, prompt replacement protects basements and finished spaces.
  • Sump Pump Repair: Pumps cycling constantly or failing to activate need professional attention.
  • Sump Pump Maintenance: Regular testing confirms your pump will function during storms.
Licensed GEM electrician working inside electrical panel

Power Your Home With GEM’s Lexington Electricians

Lexington’s electrical systems range from original wiring in historic homes to modern installations in updated properties.

GEM’s licensed electricians serve Lexington with expertise across all residential electrical work.

(833) 222-2953

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EV Chargers

Home charging makes electric vehicle ownership practical for Lexington residents.

GEM’s certified electricians install Level 2 chargers that provide faster charging speeds with professional wiring.

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Smart Home Installation

Connected devices and smart home systems add convenience, efficiency, and control to Lexington homes.

GEM’s electricians install and integrate smart thermostats, lighting controls, security components, and energy monitoring systems.

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Carbon Monoxide & Smoke Detector Installation

Properly placed and maintained detectors provide critical early warning against invisible dangers.

Our electricians install smoke and CO detectors in optimal locations throughout your Lexington home with tested battery backup.

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Standby Generator Repair & Installation in Lexington

Power outages disrupt daily life, and generators keep essential systems operational when storms strike.

GEM installs and maintains backup power for Lexington homes with sizing guidance and ongoing service.

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Indoor & Outdoor Lighting Design

Proper lighting enhances Lexington homes and properties while improving safety and security.

GEM electricians install lighting solutions that complement your home’s historic character.

  • Indoor Lighting: Recessed fixtures, pendant lights, under-cabinet illumination, and accent lighting appropriate to your home’s era.
  • Outdoor Lighting: Landscape, pathway, and security lighting that improves safety while respecting the historic setting.
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Electrical Panel Upgrades

Your electrical panel must safely handle modern power demands in buildings designed for far less electrical load.

GEM’s electricians evaluate current capacity and install panels that deliver reliable power with room for future needs.

Rewiring service icon representing professional plumbing repairs

Rewiring & Wiring Installation

Many Lexington historic homes contain original wiring that cannot safely meet modern electrical loads.

Flickering lights, frequently tripped breakers, and warm outlets indicate systems needing professional attention. GEM replaces outdated wiring to current codes while respecting historic construction.

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Surge Protectors

Storms and grid fluctuations expose Lexington homes to damaging power surges.

Whole-home surge protection installed at your panel guards every circuit against voltage spikes that destroy electronics and appliances.

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Commercial Electrical Services

Lexington businesses throughout town depend on consistent electrical service.

Our commercial electricians handle lighting upgrades, panel work, safety inspections, and emergency repairs for local businesses.

Ready for Reliable HVAC, Plumbing, and Electrical Services in Lexington?

When your Lexington home needs professional attention, GEM provides the expertise historic properties require.

We’ve served New England families since 1949, including Massachusetts’ most distinguished communities. Call us or schedule online for same-day response throughout Lexington.

GEM technician in front of service truck


Frequently Asked Questions

Does GEM serve all of Lexington?

Yes. From the town center to every residential neighborhood, we serve every Lexington address.

How quickly can I get service?

Same-day appointments are available for most calls. Lexington’s accessible location is well within our service network.

Do your technicians work carefully in historic homes?

Absolutely. We understand Lexington’s colonial and historic properties represent irreplaceable heritage. Our technicians work thoughtfully around architectural details.

What makes GEM different from other providers?

We combine comprehensive capabilities with genuine respect for significant properties. Lexington homeowners receive service that honors their home’s heritage.

How can I prevent emergency repairs?

Regular maintenance catches problems before they become emergencies. GEM’s Home Comfort Club includes scheduled service that keeps Lexington homes running reliably.