Complete Climate Control for Your Home

When any part of your HVAC system underperforms, you feel it immediately.

Your comfort depends on multiple systems working together. Heating warms your home in winter. Air conditioning cools it in summer. Indoor air quality affects your health year-round.

GEM provides complete HVAC services:

We also handle geothermal installations, packaged HVAC units, zoned systems, and oil-to-gas conversions. From single-component repairs to whole-home system design, GEM delivers the climate control solutions your Massachusetts, Rhode Island, or Eastern Connecticut home needs.

(833) 222-2953


Built on Trust. Backed by Experience. Focused on You.

High-efficiency heating and cooling is our specialty. Keeping you comfortable in your home is our number one priority. GEM started as a small plumbing company in 1949 and has grown into a team that handles all your home’s mechanical systems across Massachusetts and Rhode Island.

From on-time arrivals to licensed and certified experts, we make sure homeowners get the very best for their homes. We’ve helped three generations of families throughout Suffolk, Norfolk, and Worcester counties with factory-authorized, trained HVAC technicians experienced and equipped with cutting-edge equipment.


Why Homeowners Choose GEM

One Team for Every Need

From furnace repairs to AC installations to indoor air quality upgrades, everything happens under one roof.

Same-Day Availability

Climate control emergencies don’t wait for business hours, and neither do we.

Local Service

We’re part of the community we serve, and we take pride in helping our neighbors. Our technicians are always nearby, ready to respond quickly to homes and businesses throughout the Bellingham area.

Factory-Authorized HVAC Technicians

We know New England homes, climate challenges, and local codes.

Family Owned Since 1949

We’re certified on major brands and trained on the latest HVAC technology.

Financing Available

Major HVAC investments are easier with payment plans designed for your budget.

GEM’S Home Comfort Club

Preventive maintenance, priority service, and member discounts keep your systems running year-round.

Industry Accreditations

Carrier Factory Authorized Dealer, Mass Save Installer, PHCC, ABC, and ACCA members.


HVAC Service Made Simple

Whether you need a seasonal tune-up, service for your system, or installation of new equipment, GEM’s highly skilled and trained technicians can help.

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Pick a Time That Works for You

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Schedule by phone or online at your convenience. We offer same-day service when you need immediate help and flexible scheduling when you’re planning ahead.

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Count on Clear Answers

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Our factory-authorized technicians arrive with the diagnostic tools and expertise to identify exactly what’s wrong. You’ll get straightforward explanations and upfront pricing before any work begins, so you can make informed decisions about repairs, upgrades, or replacements.

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Relax While We Handle the Details

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We install, maintain, and service all major brands with precision and care. Every job meets manufacturer specifications and local codes, and we don’t leave until your system is running right and you understand how to get the most from it.


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Peace of Mind, Worry-Free

Maintaining your home can be stressful. Let us help.


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Increased Home Value & Comfort

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


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You’re Always in Good Hands, 24/7

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Trust us to always send our best local, trained, and screened technicians to your home, no matter the hour.


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Save Money, Do More

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


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Around-the-House Maintenance Tune-Ups

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


What You Get When You Choose GEM

When your HVAC system fails or needs care, you need help fast—without surprises or runaround.

GEM delivers same-day service, upfront pricing, and licensed factory-authorized technicians who fix it right the first time. Plus, you get free estimates on replacements, flexible financing options, and military and senior discounts.

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Heating Services

New England winters demand reliable heating systems that keep your family comfortable without breaking your budget.

GEM services every type of residential heating equipment from traditional boilers and furnaces to modern heat pumps and radiant systems. Whether you need emergency repairs on the coldest night of the year or you’re planning a heating system upgrade, our technicians bring the expertise and equipment to get it done right.

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Boilers & Indirect Water Heaters

Boiler systems account for over 60% of home energy use, heating water that circulates through radiators and baseboards.

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GEM services all major boiler brands with technicians who understand these complex systems inside and out. We handle everything from routine maintenance that prevents breakdowns to emergency repairs and complete system replacements.

These systems involve circulation pumps, expansion tanks, zone valves, and multiple safety controls. When problems develop, you need technicians who can diagnose the entire system, not just swap parts. Our experience with New England boiler systems means we fix problems right the first time.

Services:

  • Boiler Repair: Strange noises, inadequate heat, pilot light problems, water leaks, or pressure issues get diagnosed accurately and repaired completely. We identify root causes and fix them, not just symptoms.
  • Boiler Maintenance: Annual inspections cover air vents, water levels, pilot lights, circulation pumps, expansion tanks, zone valves, and combustion efficiency. This preventive work keeps your boiler safe and reliable through every heating season.
  • Boiler Installation: Complete installations include proper sizing, venting design, zone control setup, and system balancing. We work with all major brands and ensure your new boiler delivers the comfort and efficiency you expect.
  • Boiler Replacement: When repairs become frequent or energy costs keep climbing, we show you the numbers on high-efficiency replacements, available rebates, and projected savings so you can make the right decision for your home.
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Furnaces

Furnaces are New England’s most common heating system, using gas, oil, or electricity to heat air distributed through ductwork.

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GEM helps homeowners get reliable, efficient heat from their furnaces through expert installation, thorough maintenance, and fast, accurate repairs. Whether you’re upgrading an old system or keeping your current furnace running strong, our technicians have the training and parts to handle it.

Most furnace problems can be fixed the same day when you call GEM. We stock common parts and arrive with the diagnostic equipment to pinpoint failures quickly, so your heat gets restored without waiting for second appointments or parts orders.

Furnace Types We Service:

  • Gas furnaces (natural gas or propane)
  • Oil furnaces
  • Electric furnaces

Services:

  • Furnace Repair: No heat, strange sounds, short cycling, or high energy bills all point to specific furnace problems. We diagnose accurately and fix issues ranging from simple filter changes to complex control board failures.
  • Furnace Maintenance: Pre-season tune-ups include cleaning burners, inspecting heat exchangers, testing ignition systems, checking blower motors, replacing filters, and measuring system efficiency. This prevents most mid-winter breakdowns.
  • Furnace Installation: New installations start with proper sizing calculations for your home’s heating load. We install equipment to manufacturer specs, connect to existing ductwork, wire controls correctly, and test everything before we leave.
  • Furnace Replacement: Furnaces over 15 years old lose efficiency and face increasing repair costs. We compare repair versus replacement economics, show you efficiency improvements in newer models, and explain available rebates and financing.
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Heat Pumps

Heat pumps move heat instead of generating it, providing both heating and cooling from one efficient system.

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GEM is a Mass Save approved installer with deep experience in cold-climate heat pump technology. We help homeowners access maximum rebates while ensuring systems perform efficiently through New England’s temperature extremes.

Modern heat pumps extract heat from outdoor air even in subfreezing temperatures, delivering comfortable warmth in winter and efficient cooling in summer. They cost less to operate than traditional systems and qualify for substantial rebates that reduce upfront investment significantly.

Heat Pump Types We Service:

  • Air-source heat pumps (most common)
  • Water-source heat pumps (for waterfront properties)
  • Geothermal heat pumps (ground-source systems)

Services:

  • Heat Pump Repair: Reversing valves, defrost controls, variable-speed compressors, and backup heat systems all require specialized diagnostic equipment and training. Our technicians carry both and can fix most heat pump problems in one visit.
  • Heat Pump Maintenance: Twice-yearly service keeps heat pumps efficient in both modes. We check refrigerant levels, test reversing valves, clean coils, inspect electrical connections, verify defrost cycles, and ensure peak performance year-round.
  • Heat Pump Installation: Complete installations include equipment selection, sizing, placement, refrigerant line installation, electrical connections, and Mass Save rebate processing. We handle every detail so your heat pump delivers the comfort and savings you expect.
  • Heat Pump Replacement: Upgrading to current heat pump technology brings better efficiency, quieter operation, and improved cold-weather performance. We explain technology advances, calculate savings, and maximize your rebates.
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Ductless Mini-splits & VRFS

Ductless mini-splits deliver efficient heating without requiring ductwork, making them ideal for older homes, additions, and rooms that stay cold.

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GEM installs and services ductless heating systems throughout Massachusetts, Rhode Island, and Eastern Connecticut. These systems provide powerful, quiet heat exactly where you need it, with individual controls for each indoor unit.

Each wall-mounted unit connects to an outdoor heat pump through one small hole. Installation takes less than a day for single-zone systems, and you get instant heating control without tearing walls apart to install ductwork. Ductless systems work exceptionally well in converted spaces, home offices, finished basements, and additions where extending existing ductwork isn’t practical.

Services:

  • Ductless Repair: Control board failures, compressor issues, refrigerant leaks, and heating performance problems all get diagnosed with specialized equipment. We use genuine parts and fix problems permanently.
  • Ductless Maintenance: Annual service before heating season includes cleaning filters, checking refrigerant levels, inspecting drain lines, cleaning coils, testing electrical connections, and verifying defrost operation.
  • Ductless Installation: We evaluate your heating needs, recommend proper system sizing, mount indoor units at optimal heights, place outdoor units strategically for winter performance, run refrigerant lines professionally, and test everything thoroughly.
  • Ductless Replacement: Newer ductless technology offers better cold-weather performance, improved efficiency, quieter operation, and advanced controls. We explain improvements since your current system was installed and help you decide if upgrading makes sense.
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Radiant Heating

Radiant systems heat floors, walls, or ceilings directly using hot water or electric elements for even, comfortable warmth.

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GEM designs and installs radiant heating for bathrooms, additions, finished basements, and whole-home applications. These systems eliminate cold spots, operate silently, and don’t circulate dust or allergens like forced-air systems.

Radiant heat works particularly well in tile bathrooms, mudrooms, home offices, and spaces where consistent, quiet comfort matters most. We help you decide where radiant heating makes sense in your home and design systems that integrate with your existing HVAC equipment.

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Oil-to-Gas Conversions

Switching from oil to natural gas heating eliminates tank refills, lowers operating costs, and reduces maintenance headaches.

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GEM handles complete conversions including old equipment removal, new system installation, gas line connections, and oil tank disposal. We coordinate with utility companies and help you access available conversion incentives and rebates.

Natural gas costs less per BTU than heating oil in most years, requires no delivery scheduling, and burns cleaner. If gas service is available at your street, conversion typically pays for itself through lower heating bills within a few years.


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Air Conditioning Services

Summer comfort depends on air conditioning systems that cool effectively, run efficiently, and don’t break down during heat waves.

GEM services all types of residential cooling equipment from traditional central AC to modern heat pumps and ductless systems. Our technicians keep your AC running through the hottest weather with maintenance that prevents failures, repairs that restore comfort quickly, and installations designed for years of reliable cooling.

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Central Air Conditioning

Central air conditioning cools your entire home using an outdoor condenser connected to your furnace or air handler and ductwork.

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GEM keeps your AC running reliably through New England’s hot, humid summers with maintenance that prevents breakdowns, repairs that restore comfort quickly, and installations that deliver years of efficient cooling.

Your central AC shares ductwork with your heating system, making it a natural fit for homes with forced-air furnaces. Regular maintenance prevents most failures, and when problems do occur, our technicians diagnose and fix them fast.

  • AC Repair: Low cooling output, frozen coils, refrigerant leaks, compressor failures, and electrical problems all get diagnosed with specialized equipment. We fix problems correctly so they don’t come back.
  • AC Maintenance: Pre-summer tune-ups include cleaning coils, checking refrigerant charge, testing capacitors, inspecting electrical connections, clearing condensate drains, and measuring system performance. This keeps your AC ready when temperatures climb.
  • AC Installation: New AC installations match equipment to your home’s cooling load, existing ductwork, and electrical service. We install outdoor condensers where they won’t be buried by snow runoff and connect indoor components correctly for quiet, efficient operation.
  • AC Replacement: When your AC can’t keep up anymore or needs frequent expensive repairs, replacement makes financial sense. We show you efficiency improvements in newer systems, available rebates, and projected energy savings.
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Heat Pumps

Heat pumps provide year-round climate control, cooling in summer and heating in winter from one system.

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GEM installs and services heat pump systems for homeowners who want both heating and cooling from efficient, rebate-eligible equipment. As a Mass Save approved installer, we maximize your incentives while ensuring your system performs excellently in both modes.

Heat pumps eliminate the need for separate heating and cooling equipment. One outdoor unit and one indoor air handler provide complete climate control, often at lower operating costs than traditional systems.

Services:

  • Heat Pump Repair: Cooling-mode problems require understanding how heat pumps differ from standard AC. Our technicians diagnose refrigerant issues, compressor problems, reversing valve failures, and control malfunctions accurately.
  • Heat Pump Maintenance: Twice-yearly service addresses both heating and cooling performance. We test all components, clean coils, check refrigerant, verify controls, and ensure efficient operation in both directions.
  • Heat Pump Installation: Complete installations include load calculations, equipment selection, placement, refrigerant piping, electrical connections, and control setup. We process Mass Save rebates and ensure you receive all available incentives.
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Ductless Mini-splits & VRFS

Ductless mini-splits provide cooling without ductwork, ideal for additions, older homes, and room-by-room temperature contol.

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GEM installs and services all major ductless brands in configurations from single-zone systems to complex multi-zone setups. Each indoor unit operates independently, letting you set different temperatures in different areas without heating or cooling your entire home.

Installation involves mounting indoor units, placing the outdoor compressor, and running refrigerant lines through small holes. Most single-zone installations complete in under a day. Multi-zone systems take longer but still avoid the disruption and expense of installing ductwork.

Services:

  • Ductless Repair: Circuit boards, compressors, refrigerant leaks, and drainage problems all get fixed with genuine parts and factory-trained service. We diagnose problems correctly and fix them permanently.
  • Ductless Maintenance: Regular service includes filter cleaning, refrigerant checks, drain line inspection, coil cleaning, and electrical testing. This maintains efficiency, prevents breakdowns, and keeps warranties valid.
  • Ductless Installation: We assess your space, recommend proper zoning, mount units correctly, run refrigerant lines neatly, place outdoor units strategically, and test everything thoroughly before we leave.
  • Ductless Replacement: Newer ductless technology brings better efficiency, quieter fans, improved filtration, and smart controls. We explain what’s improved and whether upgrading makes sense for your situation.

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Indoor Air Quality Services

The air inside your home affects your family’s health, comfort, and quality of life every single day.

GEM provides complete indoor air quality solutions including air purifiers, advanced filtration, humidity control, smart thermostats, and air handler service. We help you create healthier indoor environments by removing allergens, controlling moisture, and ensuring your HVAC system circulates clean, properly conditioned air throughout your home.

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Air Purifiers & Scrubbers

Whole-home air purifiers integrate with your HVAC system to remove particles, allergens, and contaminants from indoor air continuously.

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GEM installs air purification systems that work with your existing equipment to clean air throughout your home. We help you choose technology appropriate for your concerns, whether that’s allergens, pet dander, odors, or biological contaminants.

Services:

  • Air Purifier Repair: Electronic components, filters, and UV bulbs all require replacement or repair over time. We service existing systems and restore proper purification performance.
  • Air Purifier Installation: Whole-home purifiers install in your ductwork or air handler to treat all air circulating through your home, providing cleaner air in every room continuously.
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Air Filtration

Advanced filtration captures smaller particles than standard furnace filters, significantly improving indoor air quality.

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GEM installs media air cleaners that trap particles as small as 0.3 microns, UV air cleaners that kill biological contaminants, and UV lights that prevent growth inside your HVAC system. These technologies work continuously without creating ozone or requiring frequent filter changes.

Services:

  • Media Air Cleaner Installation: High-efficiency filters installed in your HVAC system capture pollen, dust, pet dander, mold spores, and other allergens that pass through standard filters.
  • UV Air Cleaner Installation: Germicidal UV light kills bacteria, viruses, and mold spores as air passes through your system, reducing biological contaminants throughout your home.
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UV Lights

UV lamps installed in air handlers and ductwork prevent biological growth on coils and in ducts while sterilizing passing air.

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Humidifiers & Dehumidifiers

Maintaining proper humidity prevents health problems, protects your home and furnishings, and improves comfort year-round.

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GEM installs whole-home humidifiers that add moisture during dry winter months and dehumidifiers that remove excess humidity in summer. Both integrate with your HVAC system to maintain ideal humidity automatically.

Services:

  • Humidifier Repair: Water supply issues, mineral deposits, control failures, and mechanical problems all affect humidifier performance. We diagnose and fix problems that prevent proper moisture addition.
  • Humidifier Installation: Whole-home humidifiers connect to your water supply and HVAC system to maintain comfortable humidity throughout winter, eliminating dry skin, static electricity, and respiratory discomfort.
  • Dehumidifier Repair: Drainage problems, refrigerant leaks, control issues, and insufficient moisture removal all indicate dehumidifier problems. We restore proper performance quickly.
  • Dehumidifier Installation: Whole-home dehumidifiers work with your HVAC system to remove excess moisture during humid months, preventing mold growth, musty odors, and uncomfortable dampness.
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Thermostats

Your thermostat controls when your HVAC equipment runs, directly affecting comfort, efficiency, and energy costs.

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GEM installs and services programmable and smart thermostats that give you better control and automate efficiency. We help you choose appropriate technology, install it correctly, and program it to match your schedule and preferences.

Services:

  • Thermostat Repair: Incorrect temperature readings, failed connections, control problems, and display issues all affect thermostat performance. We diagnose electrical and communication problems and restore proper control.
  • Thermostat Installation: New thermostats get installed correctly with proper wiring, mounting, and programming. We ensure compatibility with your HVAC equipment and set up schedules that maximize comfort and efficiency.
  • Smart Home Services: Smart thermostats integrate with voice assistants and home automation systems. We connect your climate control to Alexa, Google Home, or Apple HomeKit for voice control and remote access.
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Air Handlers & Air Exchangers

Air handlers circulate conditioned air through your ductwork and contain the blower, coil, and filter that make your HVAC system work.

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GEM services air handlers for both heating and cooling systems. We ensure proper airflow, quiet operation, efficient heat transfer, and reliable performance from these critical components.

Services:

  • Air Handler Repair: Blower motor failures, control problems, coil leaks, and drainage issues all affect air handler performance. We diagnose component failures and restore proper operation.
  • Air Handler Maintenance: Regular service includes cleaning coils, lubricating motors, checking electrical connections, inspecting drain pans, testing controls, and verifying proper airflow.
  • Air Handler Installation: New air handlers get sized correctly for your HVAC equipment, mounted properly, connected to ductwork securely, and wired for safe, reliable operation.
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Heat Recovery Ventilators (HRVS) & Energy Recovery Ventilators (ERVS)

An HRV works to transfer the temperature from outgoing air to heat or cool incoming fresh air. ERVs play a similar role, but in hotter climates.

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Semi-controlled Ventilation Systems

These systems expel contaminated air through your home’s ductwork by taking in air from outside and blowing it out through an exhaust fan.

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Booster Fans

Booster fans are small, separately switched fans that can control the moisture and heat, plus they remove odors and pollutants.


Additional HVAC Services

Beyond standard heating, cooling, and air quality equipment, GEM provides specialized HVAC services for unique situations and advanced comfort needs.

We design and install ductwork, zoned systems, geothermal heat pumps, and packaged HVAC units for homes requiring custom solutions or maximum efficiency.

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Ductwork

Properly designed, sealed, and insulated ductwork delivers conditioned air efficiently without wasting energy or creating comfort problems.

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GEM repairs leaking ductwork, installs new duct systems, and designs duct layouts for additions and renovations. We ensure proper sizing, adequate support, complete sealing, and sufficient insulation.

Services:

  • Ductwork Repair: Leaks, disconnections, crushed sections, and poor insulation all waste energy and reduce comfort. We seal, reconnect, reshape, and insulate existing ductwork to restore performance.
  • Ductwork Installation: New duct systems for additions, renovations, or HVAC replacements get designed for proper airflow, sized correctly, sealed completely, and insulated adequately.
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Zoned HVAC

Zoned systems divide your home into areas with independent temperature control using dampers and multiple thermostats.

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GEM designs and installs zoned HVAC systems that eliminate hot and cold spots while reducing energy waste. You control temperatures in different areas independently, heating or cooling only spaces you’re using.

Zoning works particularly well in multi-story homes, houses with large square footage, homes with significant sun exposure differences, or families with varying temperature preferences. We design zone layouts that match how you actually use your home.

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Geothermal

Geothermal systems use stable underground temperatures to provide extremely efficient heating and cooling year-round.

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GEM designs and installs geothermal heat pump systems for new construction and major renovations. These systems cost more initially but deliver the lowest operating costs available, often recovering their additional cost through energy savings.

Geothermal makes sense for homeowners committed to long-term efficiency and minimal environmental impact. We help you understand the investment, available incentives, system design options, and projected savings.

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Packaged HVAC

Packaged units contain both heating and cooling in one outdoor cabinet, ideal when indoor space is limited.

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GEM installs and services packaged HVAC systems for homes where basement or attic equipment rooms aren’t available. These all-in-one units simplify installation and service while delivering reliable year-round comfort.

Packaged systems work well in manufactured homes, small houses without equipment closets, and situations where rooftop installation is preferred. We help you choose between gas/electric packages, heat pump packages, and dual-fuel configurations.

Ready to Get Your Home Comfortable Again?

Don’t let heating, cooling, or air quality problems disrupt your family’s comfort. Whether you need emergency service or want to schedule seasonal maintenance, GEM delivers the HVAC solutions you need.

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Frequently Asked Questions

How often should I schedule HVAC maintenance?

Twice yearly for systems that both heat and cool. Once before heating season and once before cooling season. If you have separate heating and cooling systems, schedule maintenance for each system before its season starts. Regular maintenance prevents most emergency breakdowns.

Why is one room in my house always uncomfortable?

Several factors cause uneven temperatures including blocked vents, inadequate ductwork, insufficient insulation, air leaks, improper system sizing, or lack of zoning. Our technicians diagnose the specific cause and recommend solutions from simple adjustments to duct modifications or zoning systems.

What’s better for New England homes, a furnace or a heat pump?

Both work well in New England. Modern cold-climate heat pumps perform excellently even in subfreezing temperatures and qualify for Mass Save rebates. Furnaces cost less upfront but don’t provide cooling. Your best choice depends on your current equipment, available fuel, cooling needs, and budget. We explain the trade-offs for your specific situation.

How much does a new HVAC system cost?

Complete system costs range depending on equipment type, size, efficiency, and installation complexity. Heat pumps qualify for substantial Mass Save rebates that reduce costs significantly. We provide free estimates with equipment options at different price points so you can choose what fits your budget and needs.

Can I install a programmable thermostat myself?

Basic thermostat replacement is possible if you’re comfortable with electrical work and your new thermostat is compatible with your HVAC system. However, incorrect wiring can damage expensive equipment. Professional installation ensures compatibility, correct wiring, proper programming, and full functionality including Wi-Fi features and smart home integration.

Other Home Services You May Need

Your home’s systems work together. When HVAC connects to electrical problems or plumbing issues arise alongside climate control needs, GEM handles it all. One team, one call, every service your home needs.

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