Providing Year Round Comfort for Your Home
Annual Cleanings
Installations & Upgrades
Repairs & Emergencies
Time for your annual furnace/boiler cleaning?
Annual cleanings during the off season improve efficiency, save you money, prevent costly repairs, and keep your furnace or boiler in proper working order.
Rhode Island's Favorite
Cooling and Heating Contractor

New Installation | Efficiency Upgrades
- We install all system types
- Design and layout services
- New or existing construction
- No job too big or small

Service and Maintenance
- We service all system types
- Heating system and A/C cleanings
- Hot water heater replacement
- Service agreements available

Heating Oil Delivery
- Competitive price per gallon
- Automated delivery available
- Price protection agreements
- Budget payment programs
Why Energy-One?
- No sub-contractors. All work is done by our own employees.
- Fast response times and availability.
- Friendly, helpful staff eager to assist you.
- Knowledgeable, experienced technicians.
- One company for your HVAC, plumbing, and oil needs.
Popular Winter Services We Offer
Mini-Split Heating & Cooling Installation
Need heat and/or A/C in a single room or area? Mini-split units are the easiest and most affordable way to make it happen. Contact us today for a free quote!

High-Efficiency Furnace Installations and Upgrades
Whether you are looking to upgrade your existing furnace to a high efficiency system or having a furnace installed in a new home, we'd love to review your options and discuss all of the energy efficiency rebates that are currently available.

Reliable Home Heating Oil Delivery
Count on competitive pricing and reliable, on-time delivery every season. Emergency deliveries are available if you have run out of oil.

Hot Water Tank Replacement
If your tank is leaking and needs to be replaced, we've got you covered with technicians ready to remove your old tank and connect a new, energy-efficient model.
