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Mullaney Heating & Cooling, LLC.

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United States
Northbridge, MA
Mullaney Heating & Cooling, LLC.

Locally owned and trusted for oil, gas, and AC service. From burner tune-ups to mini-splits and heat pumps, we keep your system running right.

02/01/2026

New heat, same A/C — and that’s perfectly fine 👍

Installed a Conforto warm air furnace for this Marlborough home, but the A/C system was still doing its job, so we didn’t touch it.

Not every project needs a full system changeout. Sometimes a partial swap is the best move — fix what’s failing, keep what’s working.

Smart upgrade. Lower cost. Reliable comfort.

📍 Marlborough, MA

Mullaney Heating & Cooling

01/21/2026

Two trucks, one warm house.

+ .oil in the same driveway. Different companies, same goal — reliable service and dependable fuel delivery. 👍

01/11/2026

Another Roth double-wall oil tank installation completed in Northbridge, MA ✅

Roth tanks offer industry-leading safety with a true double-wall design, a factory-backed warranty, and added oil spill cleanup coverage for peace of mind.

Important reminder: when replacing an oil tank, oil should never be transferred from the old tank to the new one — doing so can compromise the warranty and long-term reliability of the system.

Thinking about replacing an aging oil tank or have questions about your setup?
📞 Mullaney Heating & Cooling
Local • Licensed • Insured

01/01/2026

Happy New Year 2026.

The first full year in business has been an experience I won’t forget. Thanks to everyone who supported me, trusted me with their homes, and passed my name along.

I appreciate it more than you know.

— Matt
Mullaney Heating & Cooling

12/21/2025

Samsung FJM Multi-Zone Mini-Split Installation | Paxton, MA

Mullaney Heating & Cooling recently completed this Samsung FJM multi-zone heat pump installation in Paxton, MA.

The Samsung FJM platform allows multiple indoor units to be connected to a single outdoor condenser, making it an ideal solution for homes that require zoned comfort without the addition of ductwork. Each zone operates independently, providing precise temperature control and improved overall efficiency.

This system utilizes inverter-driven technology to modulate capacity based on demand, resulting in reduced energy consumption, quieter operation, and more consistent indoor temperatures. Proper line-set sizing, evacuation and system startup!

12/13/2025

🛢️ Roth Oil Tank Installation – Complete
📍 Tatnuck Square, Worcester

Another Roth double-wall oil tank installed cleanly and correctly. Roth tanks are backed by a strong manufacturer warranty — but only when installed to their specifications.

⚠️ Important reminder for homeowners:
When replacing an oil tank, do not allow oil to be pumped from the old tank into the new one. Sludge and contamination can compromise the system and void the Roth warranty.

If you’re replacing a tank, make sure it’s done right from start to finish.

12/06/2025

🔥 Another Boiler Upgrade Completed in Leicester, MA! 🔥

Out with the old, in with the efficient 💪
This homeowner is now enjoying reliable heat and endless hot water thanks to a Buderus boiler paired with a DHT indirect water heater.

These high-efficiency systems are built to last — quieter operation, better comfort, and lower fuel costs all winter long ❄️🔥

If your boiler is showing its age or you want to improve energy efficiency, let’s take a look and plan an upgrade that fits your home and budget.

📍 Leicester, MA
🔧 Buderus + DHT Indirect
📞 774-437-3668 — Mullaney Heating & Cooling.

11/01/2025

🚚 Fresh Look, Same Reliable Heat!
Big thanks to Dan at DSFX Graphics for the killer lettering job on our trailer — clean, bold, and ready to roll. If you see us on the road this season, give us a wave (five fingers, not one!) 😆

10/25/2025

Hopkinton, MA

Another efficient Fujitsu mini-split installation completed by Mullaney Heating & Cooling!
These systems provide year-round comfort — quiet, efficient heating in the winter and reliable cooling all summer long.

✅ Energy-saving inverter technology
✅ Zoned temperature control
✅ Whisper-quiet operation
✅ Perfect for additions, offices, or whole-home comfort

Call/Text 📞 774-437-3668 to schedule your free estimate today.

09/20/2025

📸 Installed today in Paxton, MA — a brand-new double-wall Roth oil tank!

Oil tanks have a life of 25–30 years, and once they begin to corrode the risk of a leak goes way up. Cleanup from an oil spill can cost thousands, which is why it’s important to replace your tank before problems happen.

At Mullaney Heating & Cooling, we install double-wall tanks for maximum protection:
• 🛡️ Two layers of safety
• 💧 Built-in leak detection
• ♻️ Long-lasting, corrosion-resistant design
• 🏡 Peace of mind for your home and family

👉 Remember: oil tank inspections are part of every oil burner cleaning we perform. It’s the best way to catch issues early.

📞 Call/Text 774-437-3668 to schedule your replacement or annual maintenance.

09/13/2025

❄️🔥 It’s the Perfect Time for a Heating System Tune-Up! 🔥❄️

Keep your home safe, warm, and efficient before the cold sets in:
✅ Improve efficiency & lower fuel costs
✅ Prevent costly breakdowns in the cold
✅ Extend the life of your equipment
✅ Ensure safe & reliable operation
✅ Stay comfortable all winter long

📞 Call/Text Today: 774-437-3668
Mullaney Heating & Cooling – Your trusted local heating experts

08/26/2025

What beautiful weather we are having in lovely New England!

Now is the time to fill up with summer low prices! $2.799/gal

Address

Northbridge, MA
01534

Telephone

+17744373668

Website

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