4.6
Based on 8310 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

Your Johnston Home Runs Better with GEM

Johnston has never been flashy, and that’s the point. Families here work hard, maintain what they have, and expect the same from anyone they hire.

When the furnace in your Thornton ranch needs attention or the plumbing in your Graniteville home starts acting up, you want someone who shows up, does the job right, and doesn’t waste your time. GEM Plumbing & Heating Services, LLC has operated that way since 1949.

Our technicians arrive same-day, explain what they find in plain English, and complete repairs that hold up. No games, no runaround. When your family needs heating, cooling, plumbing or electrical services in Johnston, trust ours. Call GEM today.

Years in Business

Skilled employees

Emergency Service

Trucks on the Road


(833) 222-2953

Straight Talk and Solid Work

When you call for help with your home, you expect honest answers and repairs that last.

That’s exactly what GEM delivers. Our technicians assess the situation, tell you what’s actually wrong, and fix it properly. We don’t upsell services you don’t need or complicate simple problems. Home repairs are stressful enough. We make the process straightforward with clear pricing, skilled professionals, and work completed on your schedule.


Why Johnston Neighbors Choose GEM

Over 75 years of dependable service to Rhode Island families with honest work and fair dealing.

All GEM technicians, plumbers, and electricians hold proper licenses, pass background checks, and maintain NATE certification.

Our fleet of 500 service vehicles and 700 professionals means fast response throughout Johnston.

Quick action keeps small problems from becoming expensive headaches.

From our responsive call center to our respectful technicians, your needs come first.

Members get priority scheduling, maintenance discounts, and regular tune-ups that prevent problems.

Carrier Factory Authorized Dealer and National Grid Value Plus Installer certifications back our work.

Johnston is our community, and we take pride in keeping local homes running right.


Getting the Help You Need Is Simple

Johnston homeowners shouldn’t have to chase contractors or wonder when help will arrive.

When heating fails, drains back up, or electrical problems develop, our team responds promptly with effective solutions. From first call to finished work, we keep it simple.

Call us or book online. We’ll connect you with an available technician, often for same-day appointments.

Your technician arrives on time, evaluates the problem thoroughly, and discusses options and costs before starting work.

We complete the job right, clean up after ourselves, and leave your home working properly.

(833) 222-2953

What Our Customers Are Saying

100% Satisfaction Guarantee

4.6
Based on 8310 reviews
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 Iโ€™m very happy with GEMโ€™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 weโ€™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.
Stephen J Roma
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.
Lori Marchand
Great people and fast!
Nancy
Technician Jacob is excellent at his job. He diagnosed why our Generac generator was not working and clearly communicated the problem and presented a sound solution.
Matthew Woll
Great service all around! Richard is the best! So glad we went with GEM Plumbing!
Richard Killeen
I would again highly recommend Gem! We are on Gemโ€™s yearly service plan ๐Ÿ‘.
Douglas came and did maintenance on our AC units and pointed out the problems which were mold and shedding insulation on the outside unit.
I was able to see where the problems up close and pictures from the attic.
5 Stars to Douglas and Gem.
Patti Kahler
Aaron was very professional, pleasant address all my issues
. What a great experience.
Stephanie Boosahda
Prompt, professional, personable, precise, and pretty much top notch
RobinLou Dawkins
Gem is always the best!
Jillian Meehan
GEM = Amazing, Efficient, Classy, Caring and best service overall!
Very pleased at this time! We are still in the process of a two (2) day installation of a heat/ cool pump system.

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.

Our screened, trained, and experienced technicians serve Johnston homes around the clock. We know Johnston’s housing. The mid-century ranches throughout Thornton and Graniteville with original heating systems that still run if properly maintained.

The properties along the Woonasquatucket corridor where high water tables challenge basements every spring. The newer developments in Winsor Hill mixed with older homes that need different approaches entirely. Our crews have replaced boilers squeezed into utility closets, upgraded electrical panels that couldn’t handle a modern kitchen’s demand, and cleared sewer lines blocked by decades of buildup.

When a GEM technician arrives at your Johnston home, they know what they’re walking into.

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 Johnston, RI

Rhode Island weather swings from humid summers to freezing winters, testing every home’s HVAC system.

GEM’s heating and cooling specialists keep Johnston homes comfortable year-round. Our licensed technicians handle emergency repairs, system maintenance, and complete installations.

(833) 222-2953

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Air Conditioning Services

Hot, humid Johnston summers make reliable air conditioning essential for household comfort.

Our cooling specialists respond promptly whether you need emergency repairs or planned installation. We work efficiently while treating your home with care.

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Furnaces

Johnston winters demand furnaces that fire up reliably and run efficiently.

Our heating team serves homeowners throughout Johnston with expert installation, repair, and maintenance. We provide honest assessments and quality work at every step.

  • Furnace Installation: Proper sizing and professional installation ensure efficient heating and years of dependable performance for your Johnston home.
  • Furnace Replacement: When replacement makes more sense than repair, we help select efficient systems and handle complete installation.
  • Furnace Repair: Quick diagnosis and lasting repairs restore warmth before cold weather causes additional damage.
  • Furnace Maintenance: Seasonal tune-ups improve efficiency, lower costs, and catch problems before they leave you without heat.
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Ductless Mini-Splits

Rooms that stay uncomfortable often benefit from ductless systems with independent temperature control.

GEM’s ductless specialists design and install configurations that heat and cool specific areas without ductwork modifications. The result is quiet, efficient comfort exactly where you want it.

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Heat Pumps

Heat pumps provide efficient heating and cooling from one system, well-suited to Rhode Island’s seasonal changes.

GEM helps Johnston homeowners maximize heat pump performance through skilled installation, repair, and maintenance. Our certified technicians understand these systems thoroughly.

  • Heat Pump Installation: We install efficient heat pump systems configured for year-round performance in Johnston homes.
  • Heat Pump Replacement: When your heat pump struggles to maintain comfort, we recommend and install upgraded equipment.
  • Heat Pump Repair: Performance problems get diagnosed and resolved quickly to restore proper operation.
  • Heat Pump Maintenance: Regular service keeps systems running efficiently through temperature swings.
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Boilers

Many Johnston homes depend on boiler systems for consistent, even heat.

GEM’s heating team provides comprehensive boiler services to keep your system safe, efficient, and dependable. We service both gas and oil boilers using quality components and proven techniques.

  • Boiler Installation: We install efficient boilers matched to your Johnston home’s heating load and distribution.
  • Boiler Repair: Our technicians respond quickly to restore heat and verify safe operation.
  • Boiler Maintenance: Annual service prevents costly problems and extends boiler life significantly.
A piggy bank represents Mass Save rebate savings

Oil-to-Gas Conversions

Switching from oil to natural gas typically improves efficiency, reduces maintenance, and lowers fuel expenses.

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Radiant Heating Systems

Radiant systems provide even warmth without drafts, dust, or forced-air noise.

GEM installs and services radiant heat setups that keep Johnston homes comfortable from the ground up. Experience consistent temperatures and better efficiency.

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Indoor Air Quality Solutions

The air circulating through your Johnston home affects your family’s health and comfort every day.

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

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Thermostats & Smart Home Devices

Today’s thermostats and smart devices provide precise control over comfort and energy costs.

GEM’s technicians install programmable and connected thermostats that help Johnston homeowners manage temperature from anywhere. We recommend devices that work with your existing systems.

Plumber repairing kitchen faucet

Complete Plumbing Services in Johnston, RI

Plumbing issues require prompt service from professionals who know their way around homes of every age.

GEM’s licensed plumbers serve Johnston with fast response, honest pricing, and lasting repairs. From simple fixes to complex installations, we provide service you can depend on.

(833) 222-2953

Water Heaters

Water Heater Repair & Replacement

Reliable hot water keeps your Johnston household running smoothly.

When water heater performance drops or fails, GEM’s plumbers deliver prompt service for tank and tankless systems. We help find the right solution for your needs.

  • Traditional Water Heater Installation: We install dependable tank water heaters sized for your Johnston household’s hot water demands.
  • Traditional Water Heater Replacement: When your current tank falls short, we suggest replacements with better efficiency.
  • Traditional Water Heater Repair: Our plumbers identify problems accurately and make repairs that restore full capacity.
  • Traditional Water Heater Maintenance: Routine service clears sediment, inspects components, and helps prevent failures.
  • Tankless Water Heater Installation: On-demand systems provide continuous hot water with reduced energy use through professional installation.
  • Tankless Water Heater Replacement: Upgrading? We select efficient models and handle complete installation.
  • Tankless Water Heater Repair: Temperature fluctuations or error codes get diagnosed and fixed for consistent operation.
  • Tankless Water Heater Maintenance: Yearly service keeps tankless systems performing efficiently long-term.
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Water Filtration & Water Quality Improvements

Clean water throughout your Johnston home protects your family and plumbing system.

Municipal supply can carry minerals that affect taste and deposit scale. GEM’s water treatment options address hardness, contaminants, and quality concerns.

  • Water Purifier System Installation: Professional purification provides cleaner water from every faucet in your Johnston home.
  • Water Softener Installation: Soft water prevents mineral buildup that damages pipes, water heaters, and appliances.
  • Water Softener Maintenance: Regular service maintains resin effectiveness and ensures consistent performance.
  • Water Softener Repair: When your softener cycles improperly or hardness returns, we locate and fix the problem.
  • Water Softener Replacement: Aging softeners lose effectiveness; we install updated models for reliable results.
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Kitchen & Bath Remodels

Aging plumbing fixtures diminish function and value in your Johnston home.

Corroded taps, poor drainage, and inconsistent pressure indicate systems ready for upgrades. GEM’s plumbers install modern fixtures that improve daily convenience while complementing your home’s style.

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

Drain Clog Removal & Sewer Services

Sluggish drains, bubbling sounds, and backup indicate problems that worsen when ignored.

Johnston’s established neighborhoods mean mature trees and aging pipes that make drain issues common. Clogs often signal buildup or root intrusion deeper in your system. GEM’s drain experts restore proper flow throughout Johnston homes.

  • Kitchen Drains: Grease, food waste, and soap build up inside pipes, restricting flow. Professional cleaning removes deposits before blockages form.
  • Bathroom Drains: Hair, soap scum, and personal care products combine into tough clogs standard methods can’t clear.
  • Basement and Utility Drains: Floor drains collect debris that causes backup during heavy rain if not maintained.
Well Systems Icon

Well System & Well Pump Repair

When your well pump malfunctions, household water supply stops completely. GEM provides professional well pump services including installation, repair, and replacement to maintain dependable water flow for Johnston area properties on private wells.

Hydro Jet Icon

Hydro Jetting

When conventional drain methods can’t clear stubborn blockages, hydro jetting blasts pipes clean.

This service safely eliminates grease buildup, root intrusion, and years of deposits from Johnston sewer lines. Hydro jetting restores maximum flow and reduces future clogs.

Leaks Icon

Plumbing Leaks

Water stains, musty smells, and dripping sounds often indicate hidden leaks causing damage.

In Johnston’s established properties, aging materials commonly develop slow leaks that grow into expensive problems. Our technicians use specialized detection equipment to locate leaks precisely, complete permanent repairs, and prevent water damage from spreading through walls, floors, and foundations.

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Sump Pumps

High water tables along the Woonasquatucket corridor make sump pump reliability critical for many Johnston homeowners.

A working pump protects your basement from flooding that can cause thousands in damage. GEM’s plumbers install, maintain, and repair sump pumps to keep basements dry.

  • Sump Pump Installation: We install high-capacity pumps designed to handle Johnston’s groundwater conditions effectively.
  • Sump Pump Replacement: When your current pump ages or struggles, we upgrade to more powerful, dependable models.
  • Sump Pump Repair: If your pump cycles constantly, fails to start, or empties slowly, we restore proper function quickly.
  • Sump Pump Maintenance: Periodic testing confirms your pump will perform when spring thaw threatens.
Electrician installing a pendant light in a kitchen.

Power Your Home With GEM’s Johnston Electricians

Dependable electricity powers everything in your Johnston home, from critical systems to daily conveniences.

When electrical issues develop, you need licensed professionals who work safely and solve problems completely. GEM’s electricians provide comprehensive electrical services throughout Johnston.

(833) 222-2953

Generator Icon

Standby Generator Repair & Installation

Power outages interrupt heat, refrigeration, and essential electronics until utility service returns.

GEM installs and maintains automatic backup generators that engage seconds after power fails. We guide you through selection, handle installation, and provide ongoing service.

  • Generator Installation: We help select and install generators sized to power your Johnston home’s critical circuits during outages.
  • Generator Replacement: Aging generators become unreliable; we install current models with better efficiency.
  • Generator Repair: When your generator won’t start or runs poorly, our electricians restore dependable backup power.
  • Generator Maintenance: Regular service keeps your generator ready through testing, fluid changes, and inspection.
Lighting Icon

Indoor & Outdoor Lighting Design

Well-designed lighting improves comfort, safety, and atmosphere throughout your home and yard.

GEM’s licensed electricians complete lighting projects from individual fixtures to comprehensive installations.

  • Indoor Lighting: Recessed fixtures, pendant lights, under-cabinet illumination, and accent lighting tailored to your Johnston home’s style and function.
  • Outdoor Lighting: Durable, efficient landscape and security lighting for walkways, driveways, patios, and yards that improves safety and curb appeal.
Electrical Panel Icon

Electrical Panel Upgrades

Your electrical panel must safely handle your Johnston home’s power demands as you add appliances, devices, and technology.

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

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EV Chargers

Home charging makes electric vehicle ownership more practical and convenient for Johnston drivers.

GEM’s certified electricians install Level 2 chargers in garages and driveways, providing faster charging speeds and professional wiring that meets safety standards.

Icon representing electrical services

Surge Protectors

Storm activity, grid fluctuations, and aging infrastructure expose Johnston homes to damaging power surges.

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

Rewiring service icon representing professional plumbing repairs

Rewiring & Wiring Installation

Older Johnston properties often contain wiring that cannot safely meet modern electrical loads.

Flickering lights, frequently tripped breakers, and outlets that feel warm indicate systems needing professional attention. GEM replaces outdated wiring to current codes, delivering safe, reliable power throughout your home.

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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 Johnston home, test each unit, and ensure battery backup systems function correctly.

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Smart Home Installation

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

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

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Commercial Electrical Services

Johnston businesses depend on consistent electrical service to operate efficiently and safely.

Our commercial electricians serve retail locations, office buildings, and light-industrial facilities throughout the city. We handle lighting upgrades, panel work, safety inspections, and emergency repairs that keep local businesses running.

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

Your home deserves professionals who show up prepared, work honestly, and deliver quality results.

GEM has served Johnston and Providence County for over 75 years with expert heating, cooling, plumbing, and electrical services. Whether you face an emergency, need replacement, or want ongoing maintenance, our team provides service you can trust.

Give your Johnston home the service it deserves. Call GEM or schedule online today.

GEM technician in front of service truck


Frequently Asked Questions

What areas does GEM serve in Rhode Island?

GEM serves Johnston, greater Providence County, all of Rhode Island, and portions of Southeastern Massachusetts. Our large team and vehicle fleet enable rapid response, frequently with same-day availability.

How soon can I schedule service?

Same-day appointments are commonly available. Our scheduling team pairs you with the appropriate technician and finds convenient times. Online booking is available 24/7.

Are your technicians licensed and certified?

Yes. All GEM technicians, plumbers, and electricians maintain full licensing, insurance, and background clearance. Our HVAC specialists hold NATE certification and complete ongoing training.

What types of systems and brands do you service?

We service all major HVAC, plumbing, and electrical brands. Traditional furnaces, modern heat pumps, tank and tankless water heaters, and electrical panels from any era fall within our expertise.

How can I prevent problems with my home systems?

Preventive maintenance catches small issues before they become expensive repairs. GEM’s Home Comfort Club provides scheduled tune-ups, priority service, and member discounts for Johnston homeowners.