Need Home Heating OIl?

DUNLap’s Energy

The Plymouth Area’s Heating & Cooling  Service Expert!

Dunlap’s Energy has proudly met Plymouth County’s heating and cooling needs since 1922. We have become one of the only suppliers in the Plymouth area of BioHeat, a new generation of home-heating oil that’s renewable, cleaner, and better at heating your home.

We supply the highest quality HVAC services to thousands of customers in Plymouth county. We offer heating oil delivery, heating system and air conditioning installation and maintenance services. Our goal is to always provide outstanding customer service.


Proud Distributors of
BioHeat Home

Heating Oil

We deliver BioHeat, a 21st-century solution to home-heating that’s eco-friendly, renewable, and doesn’t cost you a penny more than traditional oil heat!

BioHeat is the next generation in home-heating oil that’s eco-friendly, renewable, safe and effective. It’s a mixture of “recycled” oil, blended with the home heating oil you’re used to, in order to create a cleaner and more efficient heating solution for your home.



BioHeat reduces Greenhouse Gas emissions by 50-80%!



More effecient

BioHeat is more efficient per BTU than natural gas.



Uses recycled American-made restaurant oil, soy, corn, animal fats and vegetable oils.



Liquid oil doesn’t burn or explode at normal temperatures. 

About Us & Why We are
The Best For the Job

In addition to Plymouth, we serve Bourne, Carver, Duxbury, Halifax, Kingston, Marshfield, Middleborough, Pembroke, Plympton, Sagamore, Sagamore Beach and Wareham.

Becoming #1 takes hard work and commitment. We strive to stay current with all of the advancements in heating and cooling technology, while keeping that “old fashioned” customer service that simply can’t be replaced . We believe personal attention is the key, and providing that is the commitment we make to our customers every day.

Plus, because we have and control our own Fuel Supply Depot & Tanks, you are assured of heating oil and diesel fuel even when area supplies dwindle due to weather and mother nature interruptions. Just one more reason to enlist Dunlap’s Energy as your supplier!

Whether it’s HVAC repair, boiler or furnace installation, air conditioning service or oil delivery, Dunlap’s Energy has what it takes to heat and cool your home!

Residential Services

Oil Delivery

We distribute BioHeat, the next generation in safe, clean and renewable home heating oil. Learn more>>> 


We offer the most professional boiler installation in Plymouth as well as the best boiler service and repair in the area. Learn more >>> 


We are the top furnace installation company in the Plymouth area, and our furnace repair services are second to none. Learn more >>>

Hot Water Tanks

Dunlap’s Energy specializes in installing, replacing and maintaining hot water storage tanks and heaters in Plymouth and the surrounding towns. Learn more >>> 

Air Conditioning

Dunlap’s Energy installs and services air conditioning systems in the Plymouth area. Our expert installation, repair and service technicians will help you choose the right system for your home. Learn more >>> 

Oil Tanks

It’s easy to forget about your oil tank, but it’s a costly mistake. Not only are oil leaks harmful to you and your family, they’re difficult and expensive to clean up. Call on Dulap’s expert engineers to inspect your oil tank, especially if it’s older than 10 years. Learn more >>> 


Need a new thermostat for your Plymouth area home? While it might seem like a footnote to your heating and cooling system, a good thermostat is a vital part of a working HVAC system. If your thermostat isn’t working, your heating and cooling systems can’t function. Learn more >>> 

Indoor Air Quality

Dunlap’s Energy installs top-of-the-line Aprilaire air quality solutions in Plymouth area homes all around the county. These systems do more than control air temperature: they purify, control humidity, and ventilate so you can make sure your family is breathing the best air possible. Learn more >>> 

Commercial Services

On Site Diesel

Dunlap’s Energy can provide all your diesel delivery needs in the Plymouth area. We can provide scheduled delivery and on demand delivery programs to local businesses in and around Plymouth. Learn More >>> 

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Open Hours

24/7 Quality Service