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Mullaney Heating & Cooling, LLC.

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

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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.

10/18/2026

A couple of years ago I started Mullaney Heating & Cooling. After about 15 years in the HVAC trade, I wanted a business where the customer deals with the person who does the work: someone who shows up when he says he will, explains things honestly, and does the job right.

My name is on this business, so my reputation goes with every job I do. I don’t cut corners or push work you don’t need, and I treat your home like my own. It keeps me accountable, and that’s just the way I like it.

That reputation is how this business has grown. Every customer I have came through word of mouth: a neighbor, a friend, a family member who said “call Matt.” I’ve never had a big ad budget, and I haven’t needed one, because people like you were willing to put your own name behind mine. That means the world to me.

Now I’m working to grow, and I’d like to keep doing it the same way. A Google review is word of mouth that more of your neighbors can see. If I’ve worked on your furnace, boiler, AC, or heat pump, I’d be grateful if you shared your honest experience:
👉 https://g.page/r/CSmDB8zVFHYcEAI/review

With the cold weather coming, call or text me at (774) 437-3668 if you need a tune-up, a repair, or want to talk about a new system or a heat pump with Mass Save rebates.

Thank you for trusting me with your homes and for sending your friends and neighbors my way. I’m excited for what’s next.

— Matt Mullaney
Mullaney Heating & Cooling

10/15/2026

Big things are on the way at Mullaney Heating & Cooling.

We've been working on a few changes to serve you better, and we'll have more to share soon. In the meantime, heating season is here. 🍂

Now's the perfect time to schedule your heating tune-up, before the first real cold snap. A quick check now helps your system run efficiently, keeps your family comfortable, and saves you from a no-heat call on the coldest night of the year.

📞 Call or text (774) 437-3668
📧 [email protected]

Proudly serving Worcester and Central Mass. Sales, service, and installations, done right.

09/25/2026

Another Roth 275-gallon double-wall oil tank installed in Holden, MA.

The old steel tank had started leaking, so we temporarily stabilized it while the homeowner burned the fuel level down to help minimize waste before replacement.

We replaced it with a Roth double-wall tank, featuring a corrosion-resistant polyethylene inner tank surrounded by a galvanized steel outer containment tank. If the inner tank ever leaks, the outer tank is designed to contain the fuel — providing added peace of mind, especially in a basement.

Roth also offers a 30-year limited warranty when installed by a Roth Certified Installer.

We also avoid transferring old fuel into a brand-new tank. Transferring fuel from an old tank can create warranty concerns and may introduce sludge, water, or sediment that can cause problems down the road.

Mullaney Heating & Cooling LLC
Serving Holden, Worcester & Central Massachusetts

09/01/2026

Another complete heating-system upgrade by Mullaney Heating & Cooling!

For this project, we replaced the customer’s aging tankless-coil setup with a new Trio oil-fired boiler and a Bock 40SK indirect water heater. We also replaced the old oil tank with a Roth double-wall oil-storage system.

This upgrade provides more dependable heat, a better supply of domestic hot water, improved efficiency, and greater peace of mind from the oil tank all the way through the heating system.

One complete system, installed to work together and built for years of reliable service.

Thinking about upgrading your boiler or oil tank? Contact Mullaney Heating & Cooling to discuss your options.

06/22/2026

Everything you’re seeing came out of one mini split during a cleaning in Sterling, MA. 😳

Dirty systems can impact airflow, efficiency, and indoor air quality. If it’s been a few years since yours was cleaned, it may be time.

📞 Mullaney Heating & Cooling LLC
Serving Central Massachusetts

06/22/2026

You never know what’s hiding inside your mini split until it’s opened up. 😳

This system in Sterling, MA looked fine from the outside, but the indoor unit was packed with dirt, dust, and debris that had built up over time.

Check out the photos and video to see everything that came out during the cleaning process.

A dirty mini split can:
✅ Reduce airflow
✅ Lower efficiency
✅ Cause musty odors
✅ Impact indoor air quality
✅ Shorten equipment life

Our deep cleaning process removes the buildup from the coil, blower wheel, drain system, and cabinet so your system can operate the way it was designed to.

Thinking it’s been a while since your mini split was cleaned? It probably has. Turn the unit off at the remote and look inside the vent at the fan. It should be clean plastic and a clean fan.

📍 Sterling, MA
📞 Mullaney Heating & Cooling LLC

06/12/2026

Another heat pump installation in the books.

This homeowner was looking for an efficient heating and cooling solution without breaking the bank. We installed a Cooper & Hunter mini-split system that delivers year-round comfort while still qualifying for Mass Save® heat pump rebates.

While Cooper & Hunter may not have the same name recognition as some of the larger manufacturers, we’ve found them to be a solid, reliable option for homeowners looking for quality equipment at a competitive price point.

Benefits include:

✅ High-efficiency heating and cooling
✅ Quiet operation
✅ Lower energy consumption
✅ Eligible for Mass Save heat pump rebates
✅ Heating performance even during New England winters

Not every project requires the most expensive equipment on the market. Sometimes the best solution is the one that balances performance, reliability, and budget.

Check out the photos from this recent installation.

Interested in a heat pump system for your home? Give us a call. If I don’t answer, please leave a voicemail or send a text message and I’ll get back to you as soon as possible.

Mullaney Heating & Cooling LLC
Serving Central Massachusetts

06/09/2026

Another few Roth tank installations completed and in service.

If your oil tank is showing signs of age, rust, seepage, or you’re simply unsure how old it is, now is the time to start planning for replacement—not after a leak occurs.

Roth double-wall oil tanks offer:

✅ Double-wall construction for added protection
✅ Corrosion-resistant inner tank
✅ Clean, professional appearance
✅ Reduced risk of environmental damage from a tank failure
✅ Long service life when properly installed

Many of the tanks we replace are still “working,” but are well beyond the point where we’d feel comfortable leaving them in service for years to come. Replacing an aging tank before it becomes a problem is almost always less expensive and less stressful than dealing with a leak.

Here are a few recent Roth installations completed by Mullaney Heating & Cooling.

If you’d like an honest assessment of your existing oil tank, give us a call. If I don’t answer, please leave a voicemail or send a text message and I’ll get back to you as soon as possible.

Mullaney Heating & Cooling LLC
Serving Central Massachusetts

06/07/2026

Cooling season is here, and now is the perfect time to schedule your A/C maintenance.

Whether you have a conventional ducted system or a mini-split, routine maintenance helps improve efficiency, maintain airflow, and identify potential issues before they become breakdowns.

Our maintenance services include:

✅ Conventional Split-System A/C Maintenance – $275

✅ Mini-Split Maintenance – $175 for the first indoor unit and outdoor condenser
✅ Additional indoor units on the same system – $50 each

The photos below show a recent mini-split deep cleaning. While routine maintenance addresses normal cleaning and inspection items, some systems require a more extensive cleaning due to heavy dirt buildup, restricted airflow, or biological growth.

Deep cleanings are available for both mini-split and conventional ducted systems and are quoted separately based on the condition of the equipment.

Not sure what your system needs? We’ll take a look and recommend the appropriate service—nothing more, nothing less.

📞 Call today to schedule. If I don’t answer, please leave a voicemail or send a text message and I’ll get back to you as soon as possible.

Mullaney Heating & Cooling LLC
Serving Central Massachusetts

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

Address

Northbridge, MA
01534

Telephone

+17744373668

Website

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