HVAC & Heating Equipment Installation in Rhode Island
When a repair stops making sense, we handle the full job: HVAC systems, furnaces and boilers, ductless mini-splits, and standby generators, sized right and installed to last.
New Equipment Installation Across Rhode Island
When a repair stops making sense and it's time for a new system, Dupuis Energy handles the full job. We install HVAC systems, furnaces and boilers, ductless mini-split systems, and standby generators for homes across Rhode Island and Southern Massachusetts.
Every installation starts with sizing. We calculate the heating and cooling load for your home based on square footage, insulation, window count, and layout. An oversized system wastes fuel. An undersized system can't keep up. We get it right the first time so your equipment runs efficiently for 15 to 25 years.
As Mitsubishi Electric Elite Diamond Contractors, we carry the highest certification level for Mitsubishi ductless systems and offer 12-year factory warranties on Mitsubishi equipment. Financing is available for all installations. When repair is still the smarter move, our service and repair team can tell you honestly.
Our Installation Services
We install heating, cooling, and power equipment for homes of all sizes. Here's what each service covers.
HVAC Installation
Full central heating and cooling replacement, including air conditioning, for homes upgrading outdated systems. We remove the old equipment, install the new system, connect ductwork, and test everything before we leave. Oil, gas, propane, and electric. Most jobs finish in one day.
HVAC installation ›Furnace Installation
New oil-fired and gas-fired forced-air furnaces. We size to your home, remove the old unit, connect the ductwork, wire the controls, and test everything before we leave. Most installs finish in a single day.
Furnace installation ›Boiler Installation
New oil and gas hot water and steam boilers for hydronic homes. We handle sizing, removal, piping, venting, wiring, and testing, and can convert your fuel type if you want to switch.
Boiler installation ›Ductless Mini-Split Systems
Ideal for homes with no ductwork, finished basements, bonus rooms, or additions the main system can't reach. Ductless systems heat and cool individual zones. As Mitsubishi Elite Diamond Contractors, we install, service, and warranty them at the highest level.
Ductless mini-splits ›Generator Installation
Ice storms, nor'easters, and multi-day outages are a fact of life here. A standby generator kicks on automatically when the power goes out and runs on propane or natural gas. We size it to your home, pour the pad, run the gas line, and wire it to your panel.
Generator installation ›What Every Installation Includes
Mitsubishi Electric Elite Diamond Contractors
We carry the top Mitsubishi certification level, which means specialized training, factory-backed installs, exclusive 12-year warranties, and help claiming every rebate and incentive you qualify for.
Trusted Across Rhode Island
The system is working great so far, and I'm really happy I chose a local business to have a relationship with.
They are the best of the best.
The service was affordable and only took an hour for both furnaces.
Tech was extremely courteous, professional, and extremely knowledgeable.
I've been a very satisfied customer for 27+ years.
Service, pricing, and professional service, always.
4.9 average across review platforms · 80+ reviews. View all reviews
New Equipment Installation FAQ
How do I know if I should repair or replace my HVAC system?
How long does a new HVAC installation take?
Do you offer financing for new equipment?
What brands do you install?
Will a new system lower my energy bills?
Your Comfort Is Our Priority
A member of our team will be in touch shortly to confirm your details or answer any questions. If you're an existing customer who needs oil or propane delivery, please order fuel directly through your online account.