Completed Projects

Quincy, MA Marine AC Service

We recently serviced a marine air conditioning unit on a boat in Quincy. The system, which used R-22 refrigerant, was underperforming due to buildup and a lack of maintenance. After a thorough cleaning and inspection, we restored it to full operation just in time for the peak of summer boating season.

Duxbury, MA AC Service & Electrical Diagnostics

In Duxbury, our technician Meg responded to a call for an underperforming AC system. After testing the compressor and electrical components, she identified a failing capacitor. The microfarad reading was outside the acceptable range, indicating it was no longer holding a charge properly. After replacing the capacitor, the system was back up and running in just 20 minutes, quick, efficient, and effective.

Brookline, MA Mini-Split Installation for Airbnb

In Brookline, we installed a three-head mini split system in a beautifully renovated space being prepared for Airbnb rental. We coordinated closely with the construction team to stay on schedule and ensure the system was installed cleanly and efficiently. The result: a high-end, climate-controlled rental ready to welcome guests in comfort.

Marshfield, MA R-22 System Replacement

In Marshfield, we replaced an aging air handler and condenser that were still running on outdated R-22 refrigerant. R-22 has been phased out due to its harmful environmental impactspecifically its contribution to ozone depletion and high global warming potential.

We upgraded the system to use R-32, a more efficient and environmentally friendly refrigerant. R-32 offers better heat transfer, requires less volume, and has a significantly lower global warming potentialmaking it a smarter, greener choice for modern HVAC systems.

Harborside Heating & Cooling recently completed a warranty compressor swap in Pembroke, MA, on an Amana HVAC unit. This highlights our expertise in handling warranty repairs efficiently and professionally, ensuring our customers experience minimal downtime and maximum comfort.

When a homeowner in Pembroke contacted us about their Amana air conditioner not cooling properly, our certified technicians quickly diagnosed the issue as a faulty compressor. Fortunately, the unit was still under warranty, allowing us to proceed with a compressor replacement at no cost to the homeowner (excluding labor).

Navigating warranty claims can be a hassle, but we handle it all for our customers. We contacted Amana, verified the warranty coverage, and ordered the replacement compressor. Once the part arrived, we scheduled the swap at a time convenient for the homeowner.

Our experienced technicians performed the compressor replacement with precision and care. This involved safely removing the old compressor, installing the new one, recharging the refrigerant, and thoroughly testing the system to ensure optimal performance. We also took the time to explain the work to the homeowner and answer any questions they had.

By completing the warranty compressor swap quickly and efficiently, we restored the homeowner’s air conditioning system and ensured their continued comfort. This is just one example of our commitment to providing exceptional HVAC services and exceeding customer expectations.

If you’re experiencing issues with your Amana HVAC unit or any other brand, don’t hesitate to contact Harborside Heating & Cooling. We’re here to help you with all your heating and cooling needs, including warranty repairs, maintenance, and new installations.

At Harborside Heating & Cooling, we understand that every customer has unique needs and preferences when it comes to their home’s heating and cooling system. Recently, we had the pleasure of helping a customer in Hanover, MA, who was experiencing issues with her smart thermostat and desired a simpler, more straightforward solution.

Initially, the customer had a smart thermostat installed, aiming to take advantage of its advanced features and energy-saving capabilities. Smart thermostats offer numerous benefits, including:

• Remote Control: Adjust your home’s temperature from anywhere using your smartphone or tablet.
• Energy Savings: Program customized schedules to optimize energy usage and reduce utility bills.
• Learning Capabilities: Some smart thermostats learn your habits and automatically adjust the temperature for maximum comfort and efficiency.
• Integration with Smart Home Systems: Connect with other smart devices for seamless automation.

However, our customer found the smart thermostat to be more complicated than necessary. She wanted something basic, easy to use, and reliable. We listened to her concerns and recommended a simple, user-friendly thermostat that would provide consistent comfort without the need for advanced programming or connectivity.

To accommodate her needs, we were able to provide same-day service, removing the smart thermostat and installing the new, basic model. Our customer was thrilled with the quick turnaround and the ease of use of her new thermostat.

While smart thermostats offer fantastic benefits for many homeowners, we recognize that they’re not for everyone. Sometimes, simplicity and ease of use are the top priorities. At Harborside Heating & Cooling, we’re committed to providing tailored solutions that meet your specific needs and preferences.

Whether you’re looking for the latest in smart home technology or a reliable, no-frills system, we’ve got you covered. Contact us today for a consultation and let us help you find the perfect HVAC solution for your home!

At Harborside Heating & Cooling, we recently completed a challenging but rewarding HVAC system installation in Scituate, MA, and we’re excited to share the details! Our customer was looking to replace their old, inefficient system, which used the outdated R-22 refrigerant. We were able to upgrade them to a brand-new, energy-efficient system using the more environmentally friendly R-32 refrigerant.

This project presented some unique challenges. First, the home had blown-in insulation, which required extra care to ensure no dust or debris entered the living space during the installation. To top it off, it was a rainy day, making the outdoor work a bit more difficult. The biggest hurdle, however, was the limited access to the installation site. With no traditional access points available, our skilled technicians had to get creative and carefully maneuver the new air handler and condenser through the return grill. Talk about a tight squeeze!

Despite these obstacles, our team persevered and completed the installation in just one day, leaving our customer thrilled with the results. In fact, here’s what Gary Durante had to say:

“The guys from Harborside were outstanding! Replaced my a/c system in one day. I called them on Monday, Tuesday they showed up and gave me a fair no B/S, no up sell estimate. I had a new system by end of day Thursday! Knowledgeable, friendly, professional. Highly recommended!”

Thank you, Gary, for the fantastic review!

At Harborside Heating & Cooling, we pride ourselves on our ability to tackle even the most complex HVAC installations with professionalism and expertise. Whether you’re looking to upgrade to a more efficient system, need a repair, or require routine maintenance, we’re here to help. Contact us today for a fair, no-nonsense estimate and experience the Harborside difference!

We recently completed a 50‑gallon water heater installation in Pinehills, upgrading the home with a reliable hot water solution and adding an emergency leak detection system for added protection and peace of mind.

Reliable 50‑Gallon Water Heater Upgrade

The homeowner needed a dependable hot water system sized appropriately for household demand. We removed the existing unit and installed a new 50‑gallon water heater, ensuring:

• Proper sizing for consistent hot water
• Code‑compliant plumbing and safety connections
• Clean, professional layout for long‑term serviceability
• Reliable performance for daily use

Once installed, the system was fully tested to confirm proper operation and recovery.

Added Protection With Emergency Leak Detection

As part of this project, we installed an emergency water leak detector, designed to identify leaks early and help prevent water damage. These systems are especially valuable near water heaters, where undetected leaks can cause significant damage over time.

Benefits of the leak detection system include:

• Early warning of leaks or abnormal water flow
• Reduced risk of flooding and property damage
• Added protection for finished basements and mechanical spaces
• Peace of mind for homeowners, especially when away

Clean, Professional Installation

The final setup reflects our focus on quality and attention to detail:

• Secure water heater placement
• Neat piping and electrical connections
• Proper safety components and clear access for maintenance
• A well‑organized mechanical area designed for reliability

Every installation is completed with both performance and longevity in mind.

A Smart Upgrade for Pinehills Homeowners

This project highlights how pairing a new water heater with leak detection can improve both comfort and home protection. For Pinehills homeowners, proactive upgrades like this help reduce the risk of emergency water damage while ensuring dependable hot water year‑round.

If your water heater is aging, leaking, or due for replacement, adding a leak detection system at the same time is a smart investment that can help prevent costly issues down the road.

We recently completed a boiler hydrostat replacement in Pembroke, Massachusetts, restoring proper temperature control and reliable operation for a residential hydronic heating system.

Accurate Diagnosis for Reliable Boiler Operation

The homeowner was experiencing inconsistent boiler performance and heating issues. After a full system evaluation, we identified a failed hydrostat control, a key component responsible for regulating boiler temperature and managing burner operation based on system demand.

When a hydrostat begins to fail, it can lead to:

• Irregular boiler cycling
• Inconsistent heat throughout the home
• Reduced efficiency
• Increased wear on internal components

Pinpointing the issue correctly is essential to ensuring the right repair is made.

Proper Hydrostat Replacement

The faulty control was removed and replaced with a properly matched hydrostat designed for this boiler, ensuring safe and accurate operation. The replacement process included:

• Secure, code‑compliant wiring connections
• Correct sensor placement
• Verification of temperature limits and settings
• Full operational and safety testing

Using the correct control ensures the boiler operates within manufacturer specifications and responds properly to heating demand.

Restored Performance and Safety

Once the new hydrostat was installed, the boiler was tested through multiple heating cycles to confirm:

• Stable temperature regulation
• Proper burner sequencing
• Safe shutdown and restart
• Consistent heat delivery

The system was returned to service with improved reliability and performance.

Why Hydrostat Controls Matter

The hydrostat plays a critical role in boiler operation by:

• Managing boiler water temperature
• Preventing overheating conditions
• Supporting efficient fuel usage
• Helping extend the life of the boiler

Addressing control issues early can prevent larger, more costly problems down the line—especially during heating season.

Professional Boiler Service in Pembroke

This project highlights the value of professional boiler diagnostics and targeted repairs. When the right component is replaced the right way, system performance and safety are fully restored without unnecessary work.

If your boiler is short cycling, failing to maintain temperature, or operating inconsistently, a hydrostat issue may be the cause—and expert service can make all the difference.

We recently completed a commercial rooftop unit installation for Leslie’s Pool in Hanover, Massachusetts, upgrading the building with a new Daikin rooftop HVAC unit designed for reliable performance and long‑term efficiency.

Coordinated Rooftop Installation With Crane Support

Due to the size and placement of the equipment, this project required a carefully coordinated crane lift. We partnered with Glancy Crane to safely and efficiently set the new Daikin rooftop unit in place.

Crane‑assisted rooftop installations require detailed planning, including:

• Proper rigging and lift coordination
• Safe roof access and protection
• Precise placement on existing curbs and supports
• Minimizing disruption to the business and surrounding area

The lift and set were completed smoothly, allowing our team to focus on final connections and system commissioning.

Daikin Rooftop Unit – Built for Commercial Performance

Daikin rooftop units are well‑suited for commercial applications like retail spaces, offering:

• Reliable heating and cooling performance
• Energy‑efficient operation
• Durable construction for rooftop environments
• Consistent comfort for customers and staff

This new unit was properly set, secured, and integrated with the existing ductwork and controls to ensure dependable operation.

Clean, Professional Finish

Once the unit was in place, our technicians completed all final connections and verified system operation. The finished installation reflects:

• Proper unit alignment and secure mounting
• Clean duct and electrical connections
• Code‑compliant installation practices
• A professional rooftop layout designed for service access

Attention to detail is especially important on commercial rooftop systems, where exposure to the elements and accessibility can impact long‑term reliability.

Commercial HVAC Solutions You Can Trust

This project highlights our experience with commercial rooftop HVAC installations across the South Shore. From crane coordination to final startup, every step was handled with safety, efficiency, and long‑term performance in mind.

For Hanover businesses and commercial property owners, upgrading to a modern rooftop unit can improve comfort, efficiency, and system reliability—while minimizing downtime when the job is done right.

This Wareham, Massachusetts project is a perfect example of how a dated heating system can be transformed into a clean, efficient, and reliable setup—in just one day.

The homeowner was dealing with an aging, inefficient furnace that had clearly reached the end of its service life. After an on‑site evaluation, we recommended a full furnace replacement to improve safety, efficiency, and long‑term reliability.

Before: Aging Equipment & Inefficient Setup

Before the upgrade, the home was heated by an older furnace that showed its age in both performance and appearance. The system:

• Took up unnecessary space
• Lacked modern efficiency standards
• Showed signs of long‑term wear
• Offered limited reliability moving forward

Older systems like this often struggle to keep up during colder months and can lead to rising fuel costs and unexpected breakdowns.

After: Modern Goodman Furnace — Installed in One Day

Our team removed the old equipment and completed a same‑day furnace replacement, installing a new Goodman high‑efficiency furnace designed for dependable performance and improved comfort.

The finished system features:

• Clean, compact layout
• Properly sized and sealed duct connections
• New venting and condensate management
• Safe, code‑compliant gas and electrical connections

Everything was carefully installed with future serviceability and long‑term reliability in mind.

One‑Day Install, Minimal Disruption

From removal to startup, the entire project was completed in one day, minimizing disruption to the homeowner’s routine. Once installed, the system was fully tested through multiple heating cycles to ensure:

• Proper airflow and temperature rise
• Safe ignition and shutdown
• Quiet, consistent operation

The result is a dramatic improvement in both performance and appearance.

A Smart Upgrade for Wareham Homeowners

This before‑and‑after transformation highlights the benefits of upgrading an older furnace:

• Improved energy efficiency
• More consistent, reliable heat
• Reduced risk of emergency breakdowns
• A clean, modern mechanical setup

For Wareham and South Shore homeowners, replacing aging equipment before failure can save money, reduce stress, and dramatically improve home comfort.

If your furnace is outdated, inefficient, or becoming unreliable, a one‑day replacement can make a major difference—especially during heating season.

We were called to a no‑heat emergency in Quincy and arrived for an after‑hours diagnostic. During our safety inspection, we identified a cracked heat exchanger on a 32‑year‑old furnace—an immediate red flag that requires the system to be shut down for safety. After reviewing options with the homeowner, we installed a replacement furnace the same day and upgraded the home with a new 50‑gallon water heater, restoring reliable heat and hot water without prolonged downtime.

Emergency Diagnostic That Put Safety First

On arrival, our technician:

• Performed full system diagnostics and combustion safety checks
• Inspected the burner assembly and heat exchanger surfaces
• Documented visible cracking in the heat exchanger (see image)

A cracked heat exchanger compromises combustion integrity. The correct response is to disable the unit and replace the furnace, which we coordinated immediately to keep the home safe and comfortable.

Same‑Day Furnace Replacement — 32‑Year‑Old System

Given the age and condition of the furnace, replacement was the most responsible, cost‑effective solution. Our team:

• Removed the failing unit and set a properly sized, high‑efficiency replacement furnace
• Verified venting, gas, electrical, drain, and airflow per manufacturer specs
• Completed startup commissioning and multi‑cycle performance testing

Result: Safe, efficient heat restored the same day with clean workmanship and serviceability in mind.

New 50‑Gallon Water Heater for Reliable Hot Water

To round out the upgrade, we installed a 50‑gallon water heater, providing:

• Consistent hot water for daily use
• Improved recovery and reliability
• Code‑compliant connections, shutoffs, and venting (where applicable)

Pairing the water heater replacement with the furnace allowed us to minimize disruption and deliver a cohesive, clean mechanical room setup.

Why This Matters for Quincy Homeowners

• Safety first: A cracked heat exchanger means shut it down and replace—no shortcuts.
• Speed matters: Emergency response + same‑day replacement keeps families comfortable.
• Efficiency upgrade: Modern equipment offers better performance and lower operating costs.
• Professional finish: Clean layout, labeled shutoffs, and future‑friendly service access.

Thinking You Might Have a Similar Issue?

Watch for these signs:

• Furnace repeatedly shutting down or tripping safeties
• Unusual odors or soot around burners/vents
• Aging equipment (20+ years) with rising repair frequency
• Visible corrosion, hot spots, or cracks on heat exchanger surfaces

If you suspect a problem, don’t run the furnace—call for a safety inspection. We’ll diagnose the issue, explain your options, and if needed, handle same‑day replacement to get you back up and running fast.

Heating problems never seem to happen at a convenient time—and this DCNE homeowner experienced that firsthand when their Bryant furnace failed late in the evening. We received an emergency no‑heat call around 10:00 PM and responded promptly to diagnose the issue and get the home safe and stable.

After‑Hours Emergency Furnace Diagnostic

Upon arrival, our technician performed a full system evaluation and identified a failed furnace pressure switch, a critical safety component that prevents the system from operating if proper airflow and venting conditions are not met.

Because the pressure switch is a safety device, accurate diagnosis is essential. We confirmed:

• Inducer motor operation
• Venting and airflow conditions
• Electrical and control board signals

Once the failed pressure switch was confirmed, we explained the findings clearly to the homeowner and outlined the next steps.

Correct Repair — Not a Guess

Rather than installing an incorrect or mismatched part, we sourced the proper OEM‑rated pressure switch specific to this Bryant furnace. Using the correct component ensures:

• Safe furnace operation
• Proper pressure calibration
• Long‑term reliability
• Manufacturer‑approved performance

Once the replacement part arrived, we returned to complete the repair promptly.

Clean, Professional Pressure Switch Replacement

The final repair was completed with clean wiring connections, proper tubing alignment, and secure mounting, restoring the furnace to safe, reliable operation. After installation, the system was fully tested through multiple heating cycles to verify:

• Correct pressure readings
• Safe ignition sequence
• Reliable shutdown and restart
• Consistent heat delivery throughout the home

This attention to detail is critical on high‑efficiency Bryant and DCNE furnaces.

Reliable Emergency HVAC Service You Can Trust

This project highlights the importance of experienced diagnostics and doing the job the right way, especially during an after‑hours no‑heat situation. While some repairs require the correct part to be sourced, fast response, clear communication, and proper follow‑up make all the difference.

For homeowners, this means:

• No unnecessary part swapping
• No safety shortcuts
• A repair done correctly, not rushed

If your Bryant furnace stops working, short cycles, or locks out—especially during cold weather—professional diagnosis can prevent bigger issues and ensure safe operation.

We recently completed a Navien tankless water heater installation in Scituate, Massachusetts, and this project is a great example of how modern equipment, clean workmanship, and efficient planning come together for an outstanding result.

One‑Day Tankless Water Heater Install With Minimal Disruption

The homeowner was looking to upgrade to a more efficient hot water solution without dealing with days of downtime. Our team completed the entire tankless water heater installation in just one day, ensuring minimal interruption to their hot water supply. Careful scheduling and preparation allowed us to remove the old system and bring the new Navien unit online quickly and safely.

For homeowners, that means:

• No extended loss of hot water
• No drawn‑out construction mess
• A smooth transition to a modern, high‑efficiency system

Why We Installed a Navien Tankless Water Heater

Navien tankless water heaters are a top choice for coastal Massachusetts homes thanks to their reliability, efficiency, and performance. This system provides:

• Endless hot water on demand
• Improved energy efficiency compared to traditional tank systems
• A compact wall‑mounted design that frees up valuable basement space
• Advanced technology designed for long-term durability

Tankless systems are especially popular in Scituate homes where efficiency, space savings, and consistent hot water matter year‑round.

Clean, Professional Install – Built to Last

As you can see in the finished photo, this installation was completed with clean, organized piping and precise layout. All plumbing and venting were carefully routed for optimal performance and future serviceability. We also installed an expansion tank and proper support components to ensure the system operates safely and efficiently.

Every detail matters—from straight pipe runs to secure mounting—because quality installation directly impacts system lifespan and performance.

Signature Brand Colors That Set the Install Apart

One of the standout features of this project is the custom finish and lighting that showcases our signature brand colors. The clean green backboard and subtle accent lighting not only make the system visually striking, but also reflect our commitment to craftsmanship and pride in our work.

This isn’t just a water heater—it’s a professional-grade installation that looks as good as it performs.

A Smart Upgrade for Scituate Homeowners

For homeowners considering a tankless water heater in Scituate or the South Shore, this project highlights the key advantages:

• Fast, efficient installation
• Reduced energy usage
• Reliable hot water whenever you need it
• A clean, modern mechanical setup

If you’re thinking about upgrading your hot water system, a Navien tankless water heater installed by experienced professionals is a smart long-term investment.