Request Service

Serving Heating, Cooling, Plumbing & Energy Needs

Throughout Massachusetts

Request Your Appointment Today!

Our technicians are ready to help! Get in touch with us by calling the number or filling out the form below

About Dempsey Energy

Full-Service HVAC, Energy & Plumbing in Mansfield

Your property is comprised of several systems to ensure comfort and convenience. However, just like any equipment, major systems such as HVAC or plumbing will eventually require service to keep it working efficiently. If you live in Mansfield or anywhere in Massachusetts, count on Dempsey Energy for all your heating, air conditioning, oil delivery, and plumbing needs. With over 25 years of experience, our team is highly familiar with the common nuisances and solutions to get your major systems running efficiently again.

To learn more about our broad range of services, give us a call at (617) 997-4310 or contact us online.

Our Company Story

In an effort to be more accessible and transparent, and to give current and potential customers a better picture of who we are, here’s our story.

Dempsey Energy, then Dempsey Pro Services, started in 1992 as an oil delivery company that employed family and friends trained in oil delivery and in HVAC services. After several years of providing these services, the business was passed on to the next generation of Dempsey. This move created new opportunities such as adding licensed services to customers.

With change came growth and with growth came learning. Our company started experiencing growth in service calls that showed promise for big things to come. Unfortunately, as can happen, this growth leads to communication issues with a small group of customers and we didn’t meet our standards for customer service. In our effort to keep up with calls, we did not screen technicians as thoroughly as we should have. This has led to lower field standards, and in a short time, led to confused customers that had previously grown familiar with our decades of exceptional service. It was unfortunate and we apologize to all affected during this process.

In the past several months, we have been doing all we can to make good on things that went bad. We have reflected on these incidents and decided to use it as a learning experience to make us the best possible company we can be. We have improved communications and streamlined staff to only the most trusted and reliable. But most of all, we will not stop evaluating ourselves to ensure we do not lose sight of our goal to provide customers with the personal, quality, reliable, and affordable services you have come to know.

Why Choose Dempsey Energy?

Let’s face it, when it comes to heating, air conditioning, oil delivery, plumbing, or really any service company, you have lots of options. Some people rely on online reviews, others on word of mouth or whoever answers the call first. Some even gather info from several companies and then choose.

If we are fortunate enough to have you as a customer, we will treat you like you should be treated—as a partner in ensuring your property is cared for properly. We will work with you to meet your needs and requirements. We will not stop trying harder for you and doing all we can to foster this partnership.

Here are some of the things you can expect from us:

  • Highly trained technicians
  • Quality craftsmanship for each service with close attention to detail
  • Variety of prices for each level of service to fit any budget
  • Fully stocked trucks for faster repairs
  • Emergency services available 24/7

Call Now to Get Started

Dempsey Energy is looking forward to showing you how much our company has grown and changed for the better. Allow us to be your go-to service team and we will do everything we can to be worthy of your trust.

Request a service today to get started. Contact us at (617) 997-4310 or online!

The Right Technicians, The Right Company

Do you need a professional technician for your plumbing, heating, or air conditioning system? Available 24/7, our team at Dempsey Energy can help. We provide oil delivery and other energy services as well. Call today for same day service. Always a live answer.


Contact Us


Card image cap

Great Careers at Dempsey Energy!

Join Our Team!
Card image cap

Review Us on Social Media

Card image cap

Follow us here

We Work With All Brands Including:

You Can Count on Our Service Professionals

Award-Winning Service

24/7 Emergency Services

Top-Notch Workmanship

Clean-Cut, Professional Technicians

High-Quality Workmanship

Fast, Same-Day Repairs

See why we are the best!

Describe the incentive to browse the video galley, maybe there is a new video they need to see.

Powered By: