October Is Breast Cancer Awareness Month

Proceeds of New Installations to Benefit The Gloria Gemma Breast Cancer Research Foundation

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

Reliable Service for Cambridge Homes

Your home systems should work when you need them, and when they do not, you want technicians who understand historic urban housing.

Cambridge packs world-class universities, innovative companies, and diverse neighborhoods into one of America’s densest cities. From the Victorian triple-deckers of Cambridgeport to the historic homes near Harvard Square, from the row houses of Mid-Cambridge to the condos throughout Kendall Square, property owners maintain buildings where age, density, and architectural significance create unique challenges.

GEM Plumbing and Heating Services, LLC provides heating, cooling, plumbing, and electrical services in Cambridge, MA with expertise adapted to historic urban properties. Call GEM when your home needs help.

Years in Business

Skilled employees

Emergency Service

Trucks on the Road


(833) 222-2953

Service That Respects Historic Properties

Cambridge property owners need technicians who work carefully in historic buildings and efficiently in tight urban spaces.

Triple-deckers, brownstones, Victorian homes, and modern condos all require technicians who understand varied construction. Our professionals arrive prepared, protect architectural details, and provide solutions that work within building constraints. When your Cambridge property needs attention, you deserve service from technicians who know urban historic housing.


Why Cambridge Property Owners Choose GEM

Victorian homes, triple-deckers, and buildings with architectural significance all receive careful attention from technicians who understand preservation requirements.

We navigate tight streets, limited parking, and compact spaces to deliver efficient service throughout Cambridge.

Over 75 years serving New England families and property owners who expect reliable service.

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

Your schedule matters. When heat fails or plumbing backs up, we respond quickly throughout Cambridge.

Members receive priority scheduling, maintenance discounts, and regular service that prevents unexpected breakdowns.

Carrier Factory Authorized Dealer and National Grid certifications demonstrate our commitment to quality work.

Cambridge’s central location places it conveniently within our standard service territory.


Getting the Help You Need Is Simple

Professional service should involve clear communication and honest pricing.

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

Call or book online. We accommodate Cambridge 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 architectural details, and confirm everything functions before leaving.

(833) 222-2953

What Our Customers Are Saying

100% Satisfaction Guarantee

4.6
Based on 9508 reviews
Joanne Bennett
2 days ago
Exceptional service from GEM. Douglass is absolutely the best !!! … will use them again. Thank You!
buddy croce
2 days ago
Workers were polite and knowledgeable. They diagnosed the problem right away. And we're able to repair it same day.
Steven Pichette
3 days ago
August 27 2025 . Another excellent yearly electrical plumbing , & heating checkup by Eric Governo , Brody Lott , Aiden Cunningham and crew. Thanks! Aug 2025 – Excellent service by Jacob and his coworker . Yearly maintenance on our Generator . Great service as always . Routine maintenance appointment for our boiler . Highly recommended . 2025- same great service for our routine maintenance for our central air unit. May 14, 2026 – great yearly central air maintence by Joe and Anthony . Professional and helpful explaining the inspection they preformed August -18 2026 – we had our yearly maintence for our generator . Aiden was the Gem tech that came out and did the yearly maintence. Aiden was excellent answering all my questions regarding the generator . Was a pleasure having Aiden serviced our yearly generator maintenance August 21-2026. Gem tech Richard stopped by today to go over a couple of issues with our central air unit . Excellent visit and service . August 28 2026 – another great professional visit today by ( Senior ) Joseph . Our central air went down and was fixed in less than 24 hours . Thanks again ! Oct 1 2026 – Erikson M and Demetris arrived to inspect my furnace for its yearly tune up . Another excellent professtional visit. Thank You !
Kate Kelley
3 days ago
I had a plumbing emergency today & GEM had a guy on my doorstep within 1/2 hour. I couldn’t even get a return phone call from anyone else. Excellent service!
Robert Smith
3 days ago
Christopher was efficient and courteous and completed my boiler and split unit heat annual maintenance quickly. Highly recommended!
Maureen Walsh
3 days ago
Rainey was excellent . He explained why my system failed and explained what a new system would cost . We agreed to replace our furnace which was 24 years old . Rainey and Pedro showed up at 8 and before 4 I had a new furnace installed and the old one hauled away .Easily explained all the process , he was excellent
Kate Pomert
3 days ago
the price put me in sticker shock …..but the work was exceptional. they did a great job and explained to me what they did.
Buck Bruce
3 days ago
Seemed very knowledgeable and very informative. Friendly service as well.
Jim Harrod
3 days ago
I was thoroughly impressed with the superb HVAC maintenance service I received from David Santiago and trainee, Kevin today! Before David and Kevin arrived I was very disappointed with having had my original service date rescheduled to what I thought were spurious reasons? In fact David and Kevin arrived after the designated rescheduled date and time today. GEM's communication was excellent throughout and their people seemed genuine and concerned. When David and Kevin arrived it turned the whole situation around. They could not have been more professional and knowledgable! I am now firmly committed to GEM and their Home Comfort maintenance program.
Maren Stack
3 days ago
Professional, informative, and reliable!
Malek Askar
4 days ago
We just had our heating system replaced. We went from forced hot water system to a central heating and air conditioning system done by GEM plumbing and heating company We had Omar and Michael work in our home for 5 days they installed all the ductwork, the furnace and the condenser. These guys were very professional, kind, clean and informative throughout the whole install every day they explaind what they did and what is the expectation for the next day. Today was the last day they walked me through the whole system, how to change the filter how to operate the new thermostat and what to look for when things are not working properly. I say thank you to the whole team from planing to done, all went great to expectations
Donna Rubinate
4 days ago
Erickson was great. Efficient, friendly and through. Very professional
Dawn Riall
4 days ago
Ryan and his crew were excellent. They were very knowledgeable and took the time to explain things to me. They were helpful and looked for alternatives for my situation. Not looking to simply make a buck and drive up the bill. Even went out of their way to clear way the awful spiders and buckets of water. Would highly recommended Ryan and Gem. Thank you.
Perfect call: rapid diagnosis and plan for repair
Jillian Johnson
4 days ago
Responsive. Organized. Tracks warranties and sets up maintenance schedule.. Various experience levels for specific jobs. Quality work. Pricier but worthy.
Nelson did a great job
On time, friendly, professional and thorough testing and maintenance of old gas boiler and hot water heater, tested all radiators. Great communication about exact arrival time and throughout the process. GEM has well trained professionals. Excellent service as part of my maintenance contract.
Mary Maltezos
4 days ago
Both techs were very professional and answered any questions we had. Also showed us how ro replace humidifier filter when needed. Worked steadily, cleaned furnace and replaced parts requested.
Our service rep Rainey was very professional knowledgeable and described the work and process of how GEM works in an easy to understand way. This was our first time using gem and we had a great experience
AXS441 GM
4 days ago
9-30-26 Excellent! Extremely detailed and thorough. Explained all actions clearly, and very pleasant, and knowledgeable. Very impressed and hope to receive his services in the future. Thank you, A ———————- For Friday. Aug. 21, 2026 by John Excellent!! He checked all vents and 2 air handlers To track locations of Freon. Determined proper pressure levels and other settings were ok but not cooking. Very thorough and knowledgeable. Since performed all these checks, Can he return to finish his work!!! Thank you, Ayres Services were related to lg heat pump, Not items that follow… And price not determined not finished..
Alice Wood
4 days ago
Cane same day, very efficient and great helpful hints, very personable
Thanks to Nehemias and Partner for a great job routine maintaining of my hvac system!
Paul Allen
4 days ago
Great customer service
Heidi Gobeille
5 days ago
Colin was so helpful and efficient. Highly recommend
Cp School
5 days ago
Courteous, knowledgeable and prompt service!

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.

Cambridge properties do not fail on a schedule, and in a city where Victorian buildings house multiple families and century-old systems serve modern demands, after-hours problems require immediate expertise. That is why our technicians are on call day and night, responding to emergencies in Harvard Square, Cambridgeport, Inman Square, Porter Square, and every neighborhood in the city.

We understand what a boiler failure means when multiple units depend on one system, how to work around original woodwork and period details, and why an electrical issue in an older building requires someone who has seen it before. We know Cambridge’s housing stock, from the grand Victorians near the Common to the dense triple-deckers along Mass Ave.

Whether a winter storm stresses an aging steam system, summer humidity overwhelms an undersized cooling unit, or a plumbing emergency threatens a finished space, you have a team that understands the common issues in Cambridge homes. When something goes wrong, you’re not left waiting.

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 technician servicing a Carrier outdoor unit

Heating and Cooling Services in Cambridge, MA

Cambridge winters demand reliable heating, and humid Massachusetts summers make air conditioning increasingly essential in dense urban housing.

GEM provides comprehensive HVAC services throughout Cambridge, from emergency repairs to system replacements.

(833) 222-2953

Cooling System Icon

Air Conditioning Services in Cambridge

Dense urban housing makes air conditioning increasingly essential for comfortable Cambridge summers.

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

  • Air Conditioner Installation: We design and install cooling systems appropriate for Cambridge’s varied properties and building constraints.
  • Air Conditioner Replacement: Current equipment delivers better cooling and lower operating costs than aging units.
  • Air Conditioner Repair: When cooling fails during summer heat, we diagnose and repair problems efficiently.
  • Air Conditioner Maintenance: Pre-season service ensures your system handles peak demand without unexpected failures.
Heat Pump Icon

Heat Pumps

Heat pumps provide efficient year-round comfort, increasingly popular in Cambridge as property owners seek sustainable options.

GEM helps Cambridge property owners maximize heat pump benefits through proper installation and maintenance.

  • Heat Pump Installation: We configure heat pump systems for optimal performance within building constraints.
  • 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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Furnaces for Cambridge Homes

When your furnace fails and the temperature starts dropping in a building full of tenants, you need technicians who understand shared systems.

GEM’s heating specialists work on furnaces throughout the city with expertise across configurations and building types.

  • Furnace Installation: We size and install furnaces matched to your Cambridge property’s heating requirements.
  • Furnace Replacement: When furnaces reach end of service life, we help select equipment that fits your building’s constraints.
  • 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 leave tenants without heat.
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Ductless Mini-Splits

Cambridge’s older buildings benefit from ductless systems that add cooling and supplemental heat without major construction.

GEM’s ductless specialists design and install systems that condition specific units or areas efficiently.

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Boilers

Boiler heat serves most Cambridge multi-family buildings, providing reliable warmth through steam and hot water systems that have operated for generations.

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

  • Boiler Installation: We install boilers matched to your building’s heat distribution configuration.
  • Boiler Repair: Pressure problems, leaks, steam traps, and circulation issues all fall within our expertise.
  • Boiler Maintenance: Annual service maintains safety, efficiency, and reliability throughout the heating season.
Technician Icon

Radiant Heating Systems

Radiant floor heat provides even warmth without drafts, an option for Cambridge properties undergoing renovation.

GEM installs and maintains radiant systems throughout the city.

A piggy bank represents Mass Save rebate savings

Oil-to-Gas Conversions

Where natural gas service reaches your Cambridge property, converting from oil can simplify maintenance and improve efficiency.

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Indoor Air Quality Solutions

Cambridge’s urban setting and dense housing create air quality considerations many property owners address with treatment systems.

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

Smart thermostat Icon

Thermostats & Smart Home Devices

Smart thermostats provide control and efficiency benefits for Cambridge property owners regardless of building age.

GEM installs connected devices that modernize comfort management.

Plumber repairing kitchen faucet

Plumbing Services in Cambridge, MA

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

From emergency repairs to planned improvements, GEM’s licensed plumbers handle every plumbing challenge Cambridge’s historic properties present.

(833) 222-2953

Leaks Icon

Plumbing Leaks

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

In Cambridge’s dense housing stock, aging connections develop leaks that threaten multiple units. Our technicians locate leaks precisely and complete permanent repairs.

Water Heaters

Water Heater Repair & Replacement

When your water heater fails and multiple units lose hot water, you need fast service from technicians who understand shared systems.

GEM provides Cambridge property owners with complete water heater services from diagnosis to installation.

  • Traditional Water Heater Installation: We install tank units sized for your property’s hot water demands.
  • 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 practical for Cambridge’s space-constrained properties.
  • 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

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

GEM installs and services water treatment equipment throughout the city.

  • 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.
Drain Cleaning Icon

Drain Clog Removal & Sewer Services in Cambridge

Slow drains and blockages disrupt daily 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.
Hydro Jet Icon

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 Cambridge drain lines, restoring full flow capacity.

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Sump Pumps

Properties in low-lying Cambridge 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 from flooding.
  • Sump Pump Repair: Pumps cycling constantly or failing to activate need professional attention.
  • Sump Pump Maintenance: Regular testing confirms your pump will function during heavy storms.
Well Systems Icon

Well System & Well Pump Repair

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

Remodel Icon

Kitchen & Bath Remodels

Outdated plumbing affects both function and aesthetics in Cambridge properties.

Dated fixtures, inefficient configurations, and aging supply lines indicate systems ready for professional upgrades. GEM’s plumbers install fixtures that meet modern standards while respecting building character.

  • Kitchen Faucets
  • Bathroom Faucets & Toilets
  • Garbage Disposal
  • Hot Water Dispenser
  • Drinking Water Filter
  • Appliance Hook Up
  • Cooking Upgrades
  • Spa Bathroom
Electrician installing a pendant light in a kitchen.

Power Your Home With GEM’s Cambridge Electricians

Cambridge’s electrical systems range from original knob-and-tube in historic buildings to modern installations in updated properties.

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

(833) 222-2953

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Standby Generator Repair & Installation in Cambridge

Power outages disrupt daily life, and generators keep essential systems operational when storms knock out power.

GEM installs and maintains backup power for Cambridge properties with sizing guidance and ongoing service.

Lighting Icon

Indoor & Outdoor Lighting Design

Proper lighting enhances Cambridge properties while improving safety and security.

GEM electricians install lighting solutions appropriate to your property’s character.

  • Indoor Lighting: Recessed fixtures, pendant lights, under-cabinet illumination, and accent lighting that respects architectural details.
  • Outdoor Lighting: Landscape, pathway, and security lighting that improves safety while complementing historic settings.
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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.

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Smart Home Installation

Connected devices and smart home systems add convenience, efficiency, and control to Cambridge properties.

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

Icon representing electrical services

Surge Protectors

Storms and grid fluctuations expose Cambridge properties to damaging power surges.

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

Rewiring service icon representing professional plumbing repairs

Rewiring & Wiring Installation

Many Cambridge properties 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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EV Chargers

Home charging makes electric vehicle ownership practical for Cambridge residents.

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

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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 Cambridge property with tested battery backup.

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Commercial Electrical Services

Cambridge businesses throughout the city 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 Cambridge?

When your Cambridge property needs professional attention, GEM provides the expertise historic urban buildings require.

We’ve served New England families since 1949, including Greater Boston’s most historic communities. Call us or schedule online for same-day response throughout Cambridge.

GEM technician in front of service truck


Frequently Asked Questions

Does GEM serve all of Cambridge?

Yes. From Harvard Square to Kendall Square, from Cambridgeport to Porter Square, we serve every Cambridge address.

How quickly can I get service?

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

Do you work with historic buildings?

Yes. Cambridge’s Victorian homes and historic multi-family buildings require technicians who understand period construction. Our team works carefully around architectural details.

What makes GEM different from other providers?

We combine comprehensive capabilities with experience serving dense urban housing. Cambridge property owners receive efficient service from professionals who understand historic buildings.

How can I prevent emergency repairs?

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