Harborside Heating & Cooling

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Harborside Heating & Cooling From routine maintenance to emergency repairs and new installations. 781-887-2450

At Harborside Heating & Cooling LLC, we provide a full range of heating and cooling services tailored to meet your residential needs across the south shore of Massachusetts.

10/12/2026

🚨 When was the last time you changed your air filter?

It’s one of the simplest maintenance tasks homeowners can do, but also one of the most overlooked!

Here’s a general rule of thumb:

🔹 Every 30 days: Check your filter for dirt and buildup.

🔹 Every 60–90 days: A common replacement interval for standard 1-inch pleated filters.

🔹 More frequently: If you have pets, allergies, heavy dust, or your system runs constantly.

A dirty filter can restrict airflow, increase energy consumption, and even cause your heating or cooling system to shut down!

💡 Harborside Tip: Don’t just go by the calendar. Check your filter regularly and replace it when needed. Thicker media filters may last considerably longer.

⚓ Harborside Heating & Cooling
Your Anchor for Cozy Living.

📍 Proudly serving the South Shore!

10/09/2026

🔥 When the flames are coming OUT of your boiler instead of staying IN… you’ve got a serious problem! 🚨

During a recent service call, we found this 80% efficient steam boiler showing multiple signs of serious failure.

🔥 Flame rollout: As you can see in the video, flames were escaping the front of the combustion chamber instead of remaining contained beneath the boiler. This can indicate a compromised combustion chamber, blocked flue passages, or other serious venting and combustion issues.

💧 Water leaking from the boiler: This steam boiler was also leaking water directly from its front section, raising concerns about the integrity of the cast-iron heat exchanger.

🚨 Safety switch tripped: The flame rollout had become severe enough to trip the boiler’s safety switch, shutting the system down to help prevent overheating and a potential fire.

Why is this dangerous? Escaping flames can damage surrounding components, create a fire hazard, and indicate combustion problems that may also increase the risk of carbon monoxide exposure.

This is exactly why annual boiler maintenance and proper safety inspections are so important. A heating system can have serious underlying issues long before a homeowner realizes something is wrong.

⚓ Harborside Heating & Cooling
Your Anchor for Cozy Living.

📞 781-887-2450
🌐 www.harborsidehvac.com

📍 Proudly serving the South Shore!

10/01/2026

Looks like a stock photo. It isn’t. 👀

This is what a clean heat pump installation can actually look like in your home.

Comfort without sacrificing the look of the room. Clean lines, thoughtful placement, and professional installation from a local South Shore team.

Thinking about adding heat pumps to your home? We offer free quotes & assessments and can walk you through the options that actually make sense for your space.

⚓ Harborside Heating & Cooling
📞 781-887-2450
🌐 harborsidehvac.com
Your anchor for cozy living.

09/25/2026

🔥 DON’T FALL FOR THE “CRACKED HEAT EXCHANGER” TRICK.

A failed heat exchanger is serious — but you shouldn’t be told you need a new furnace without being shown why.

On this system, we didn’t just take a quick look and make a guess. We tested it.

We scoped the heat exchanger from the top and from inside the furnace, where we found significant rust and deterioration. We also tested the supply air and measured carbon monoxide present in the air being delivered into the home.

As you can see in the video, we also observed abnormal flame behavior, with the flame being pushed/back-pressured toward the face of the furnace — another indication that something wasn’t right and needed further investigation.

A proper diagnosis means inspecting, testing, documenting, and showing the homeowner exactly what was found.

If someone tells you that your heat exchanger is cracked or compromised, ask them to show you the evidence. And if you’re not comfortable with the diagnosis, get a second opinion from a qualified HVAC professional.

Your heating system is a fuel-burning appliance. Safety deserves more than a sales pitch.

⚓ Harborside Heating & Cooling
Your anchor for cozy living.
Proudly serving the South Shore.

09/22/2026

Original circulator pump… and it’s definitely seen better days. 😬

Rust, corrosion, and years of wear eventually catch up with every heating system. Your circulator pump is responsible for moving hot water from the boiler throughout your home—and when it starts to fail, your heat can suffer right along with it.

Don’t wait until the first freezing night to find out your heating system has a problem. 🔥

⚓ Harborside Heating & Cooling
🔧 Heating • Plumbing • Heat Pumps
📍 Based in Pembroke — Proudly serving the South Shore
📞 781-887-2450
🌐 harborsidehvac.com

Your anchor for cozy living.

09/17/2026

Another oil-to-gas conversion underway in Weymouth! 🔥⚓

For this homeowner, the biggest concern wasn’t the boiler — it was oil. Rising and unpredictable oil prices, worrying about deliveries, and making sure there’s always enough fuel in the tank had become something they simply didn’t want to deal with anymore.

Instead of replacing this Buderus boiler, we’re converting it from oil to gas with a new burner, allowing them to keep equipment that still has life left while changing their fuel source.

If you’re tired of watching the oil gauge, scheduling deliveries, or wondering what your next fill-up is going to cost, give Harborside a call and see what options make sense for your home.

⚓ Harborside Heating & Cooling
📍 Proudly serving Weymouth & the South Shore
📞 781-887-2450
🌐 harborsidehvac.com

$5.98 a gallon for heating oil. 😳If numbers like this have you wondering what your other options are, it might be time t...
09/16/2026

$5.98 a gallon for heating oil. 😳

If numbers like this have you wondering what your other options are, it might be time to have the heat pump conversation.

Modern heat pumps can heat your home all winter while also giving you central air conditioning in the summer — and Mass Save incentives may be available for qualifying Massachusetts homeowners and projects.

⚓️ Harborside Heating & Cooling is a Mass Save heat pump installer, based in Pembroke and proudly serving the South Shore.

Already have oil? That doesn’t necessarily mean it has to be an all-or-nothing decision. We can talk through full conversions, heat pumps with existing systems as backup, and what actually makes sense for your home.

📞 781-887-2450
🌐 HarborsideHVAC.com

Your Anchor for Cozy Living. ⚓️

Be prepared for sticker shock: Heating costs are already sky-high and won’t be dropping anytime soon. The average price for heating oil across the Bay State is $5.98 per gallon.

🔗 Read more at the link in the first comment

❄️ Quick HVAC tip: Your thermostat brand is NOT necessarily the brand of your AC system!See a Honeywell thermostat on th...
09/15/2026

❄️ Quick HVAC tip: Your thermostat brand is NOT necessarily the brand of your AC system!

See a Honeywell thermostat on the wall? That doesn’t mean you have a Honeywell air conditioner. Nest? Ecobee? Same thing.

Your thermostat is simply the control for your heating and cooling system. The actual brand of your AC—Carrier, Trane, Lennox, Goodman, Mitsubishi, Bosch, etc.—can usually be found on the outdoor condenser or the equipment label.

Why does this matter? When you call for service, knowing the actual equipment brand and model can help your HVAC technician arrive better prepared.

⚓ Harborside Heating & Cooling
Your Anchor for Cozy Living
📍 Serving the South Shore
📞 781-887-2450
🌐 HarborsideHVAC.com

09/14/2026

🔥 Heating season is coming — is your boiler ready?

Don’t wait for the first cold night to find out there’s a problem. Now is the time to schedule your annual heating system maintenance with Harborside Heating & Cooling.

Before you fire up your boiler, furnace, or other fuel-burning heating system for the season, let our team give it a proper inspection and tune-up. Routine maintenance can help improve efficiency, catch problems early, and—most importantly—make sure your system is operating safely.

⚓ Harborside Heating & Cooling — Your Anchor for Cozy Living
📍 Serving Pembroke & the South Shore
📞 781-887-2450
🌐 harborsidehvac.com
🚨 24/7 Emergency Service

Call today and get ahead of the first cold snap!

09/10/2026

🍂 South Shore — heating season is right around the corner. Don’t wait for the first cold night to find out your heating system isn’t ready.

For a limited time, Harborside Heating & Cooling is offering $20 OFF our regular $99 heating maintenance — just $79 with promo code SOUTHSHORE20. 🔥

Thinking it might be time for an upgrade? We also offer FREE replacement quotes for furnaces, boilers, heat pumps & central AC — no pressure, just straightforward options for your home.

⭐ 60+ 5-Star Google Reviews
🏆 2026 South Shore Magazine Star of Excellence
🌿 Mass Save® Heat Pump Installer
🚨 24/7 Emergency Service
📍 Based in Pembroke, serving the entire South Shore

⚓ Your Anchor for Cozy Living.

📞 781-887-2450
🌐 HarborsideHVAC.com

Address

30 Corporate Park Drive
Pembroke, MA
02359

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