About Daniels Energy
Heating Oil • Propane • Heating & Cooling — Serving Central Connecticut and the Shoreline since 1926
A Legacy of Comfort Since 1926
Daniels Energy is a proud, family-owned and operated company rooted in Connecticut. For nearly a century,
we’ve helped homeowners and businesses across Central Connecticut and the Shoreline stay comfortable
with reliable heating oil and propane delivery, and expert HVAC installations and service.
What began in 1926 has grown into a full-service energy partner built on integrity, craftsmanship, and neighborly care.
Our Promise: Courteous, Ethical & Responsive Service
We believe comfort starts with people. From the first call to the final tune-up, our team is committed to
courteous, ethical, and responsive service. Whether you need an emergency delivery, a seasonal tune-up,
or a high-efficiency system upgrade, you’ll get clear recommendations, fair pricing, and dependable support.
What We Do
- Heating Oil & Biofuel Delivery — Automatic and on-demand delivery, budget and price-protection options, and expert tank guidance. Learn more
- Propane Delivery & Services — Safe, efficient delivery with professional tank installation, leak testing, and system maintenance. Learn more
- Heating & Cooling (HVAC) — Installation, repairs, and maintenance for furnaces, boilers, central air, and ductless heat pump systems. Learn more
- Service Plans & Financing — Protect your equipment and manage costs with our service plans and budget-friendly payment options. Explore plans
Brands & Certifications You Can Trust
We partner with leading manufacturers so you get dependable performance and excellent warranties. You’ll find equipment
options from brands like Mitsubishi Electric, Trane, Rinnai, Energy Kinetics, and Thermo Pride. Our trained technicians install and service systems to manufacturer specifications for lasting comfort and efficiency.
Our Service Area
Daniels Energy serves communities across Central Connecticut and along the Shoreline from our Portland and Old Saybrook locations.
See our current Heating Oil Service Area and Propane Service Area, or call us for availability in your town.
Why Homeowners Choose Daniels Energy
- Local & family-owned since 1926
- Reliable deliveries with automatic and will-call options
- Expert HVAC installation, repairs, and seasonal tune-ups
- Straightforward pricing and flexible plans
- Real people, real support—from emergency service to everyday questions
Community Matters
We live and work where you do. From supporting local events and youth programs to helping neighbors in need, Daniels Energy invests in the communities we serve—because being a good energy company starts with being a good neighbor.
Ready to Get Started?
Become a Customer or Contact Us for a free, no-pressure estimate. Already a customer? Log in to your account.
Our Locations
Portland Office
8 High Street, P.O. Box 32
Portland, CT
06480
Old Saybrook Office
103 Mill Rock Rd E
Old Saybrook, CT
06475
Phone: 860-943-5526 (Oil) • 860-852-4238 (Propane)
Licenses: Daniels Energy CT License S1-385517 HOD#19 • Daniels Propane, LLC CT License S1-302857 HOD#846
About Daniels Energy: FAQs
Do you offer automatic delivery?
Yes. Many customers choose automatic delivery for peace of mind, budget predictability, and protection during cold snaps.
Can you service my existing system?
Our technicians service most heating and cooling systems and can advise on repairs, tune-ups, or replacements to improve efficiency.
Do you install ductless mini-splits?
Yes. We install and maintain ductless heat pump systems for year-round comfort and energy savings.
Choose Daniels Energy as your heating fuel, propane, and HVAC provider, you can rest assured knowing that you are receiving the best products and services available in the industry.
Central Connecticut and the Shoreline have been home to five generations of the Daniels family. For nearly 100 years we have lived and worked in this vibrant area that combines the charms of a New England lifestyle and its rich cultural history, with great opportunities for the future.
Are you in search of a reliable and trusted heating fuel, propane, and HVAC provider? Look no further than Daniels Energy! With a proven track record of excellence and a commitment to customer satisfaction, we are your one-stop solution for all your energy needs. Whether you're a homeowner, a business owner, or a property manager, Daniels Energy is here to meet your requirements and surpass your expectations.
Here's why choosing Daniels Energy as your preferred provider is a decision you won't regret:
Unparalleled Experience and Expertise:
With over nine decades of industry experience, Daniels Energy has honed its expertise to deliver top-notch services. Our team of professionals possesses in-depth knowledge and technical proficiency, ensuring that you receive the highest level of service and care. We stay up-to-date with the latest advancements in the industry, employing innovative solutions to enhance energy efficiency and reduce environmental impact.
Reliable and Efficient Fuel Delivery:
At Daniels Energy, we understand that uninterrupted fuel supply is essential for your comfort and peace of mind. That's why we pride ourselves on our reliable fuel delivery service. Whether you require heating oil or propane, we ensure prompt and efficient deliveries, even during the coldest winter months. Our advanced logistics system guarantees that you never have to worry about running out of fuel.
Propane Solutions Tailored to Your Needs:
Propane is a versatile and cost-effective energy source that can power a wide range of applications, from heating and cooking to backup power generation. Daniels Energy offers customized propane solutions to suit your specific requirements. Whether you need propane for your home, business, or agricultural operations, we have the expertise and resources to provide a seamless and efficient propane experience.
Comprehensive HVAC Services:
Your heating, ventilation, and air conditioning (HVAC) system plays a crucial role in maintaining a comfortable and healthy indoor environment. Daniels Energy offers comprehensive HVAC services, including installation, repair, and maintenance, to ensure that your system operates at peak performance. Our skilled technicians are trained to handle all types of HVAC systems, providing you with reliable solutions and superior customer service.
Commitment to Customer Satisfaction:
At Daniels Energy, your satisfaction is our top priority. We believe in building long-lasting relationships with our customers based on trust, transparency, and exceptional service. We take the time to understand your unique needs and tailor our solutions accordingly. Our friendly and knowledgeable customer support team is always ready to assist you, providing timely and reliable assistance whenever you need it.
A family Business for 90+ Years
The family business of Daniels Energy began in the 1920’s when our Dominick began delivering coal, and later fuel oil. Since then, through tough economic times and good times, the Daniels family has been a vital part of this growing community.
When WWII servicemen and women returned to start their families and build homes, Sebastian “Barry” Daniels, Sr., made sure Daniels Energy kept up with energy technology and growing demands for clean, affordable fuel oil.
With the arrival of the new millennium, David and Robert Daniels continued the tradition of personal service as they explored alternative energy sources. Today John Daniels brings his passion and dedication to serving a single principle: First and foremost remember our customers have always been our neighbors so treat them like family.
When you choose Daniels Energy as your heating fuel, propane, and HVAC provider, you can rest assured knowing that you are receiving the best products and services available in the industry. We are dedicated to delivering excellence in every aspect of our operations, from fuel delivery to customer support.
Contact us to learn more about our offerings and how we can meet your energy needs. Experience the Daniels Energy difference today and join our growing community of satisfied customers.