Energy Unlimited

We provide comprehensive HVAC installation services for residential and commercial properties. Our certified technicians specialize in high-efficiency heating and cooling systems that reduce energy costs while maintaining optimal comfort. Every installation includes a detailed assessment of your property's specific needs, ensuring proper system sizing and placement for maximum performance and longevity.

Our oil-to-gas conversion service helps homeowners switch to cleaner, more efficient natural gas systems. We handle the complete transition process including equipment assessment, system design, and installation of high-efficiency gas furnaces or boilers. This environmentally responsible upgrade reduces operating costs and increases property value while eliminating the need for fuel storage and deliveries.

We install advanced ductless mini-split systems for homes without existing ductwork. These energy-efficient solutions allow independent temperature control in different rooms or zones. Our expert technicians ensure precise placement of indoor and outdoor units for optimal performance, quiet operation, and aesthetic integration with your property's design.

Our heat pump installations provide both heating and cooling capabilities through a single system. We offer air-source and ground-source options that transfer heat rather than generate it, significantly reducing energy consumption. Professional installation includes proper sizing, refrigerant line setup, and integration with existing heating systems for year-round efficiency.

We specialize in safe underground and above-ground oil tank removal with full environmental compliance. Our process includes site assessment, permit acquisition, careful excavation, soil testing, and proper disposal. This essential service prevents potential leaks, protects property value, and ensures environmental safety while meeting all state and federal regulations for tank decommissioning.

With 40 years of HVAC industry experience, Mark founded Energy Unlimited in 2007 to provide honest, high-quality heating and cooling solutions. He leads a team committed to technical excellence and customer satisfaction, personally overseeing system installations and service operations to maintain the company's reputation for reliability and integrity.

We provide complete HVAC solutions including installation, repair, and maintenance of heating, cooling, and heat pump systems, along with oil-to-gas conversions and ductless mini-split installations.

Yes, we provide 24/7 emergency services for urgent heating and cooling issues with rapid response times to restore comfort quickly.

Our process includes site assessment, permit acquisition, careful excavation, tank removal, soil testing, and environmentally responsible disposal following all regulatory requirements.

Currently we don't offer direct financing, but we provide detailed cost estimates to help customers explore third-party financing opportunities for major HVAC projects.

We serve residential and commercial clients throughout North and Central Connecticut, including Manchester, Hartford, and surrounding communities.

After the annual cleaning my burner kept going out and I had to manually reset it every morning until one morning it wouldn't kick back on no matter how many times I hit the reset button. A technician came out on Memorial Day to take a look at it, which I really appreciated. He said the last technician didn't connect something all the way, but he reattached the coil and it should be fine - no charge.

A couple days later the burner was out again. I reset it thinking it might just be a fluke. But two days later I had no hot water once again. A third technician came out and diagnosed the issue as a bad ignitor control unit. The labor and parts came to $320. Now I'm willing to admit coincidences do happen, but I've been here for a little under two years and only had to reset the burner once before over a year ago. What are the changes the furnace breaks down at the exact same time the annual cleaning is done?

I would wholeheartedly recommend Energy Unlimited. We asked them to provide cooling recommendations for our home last summer. Our home did not have existing ductwork so we wanted to hear about the pros and cons of central A/C and split ductless units. Mark came out to analyze our home and review the options. As he explained teach system, we learned that split ductless units have the ability to do heating in addition to cooling.

We struggled with heating during the previous winter due to electric baseboard heat and our open floor plan, so this seemed like the better fit. Mark listened to our needs and recommended the split ductless over the much pricier central A/C job. Energy Unlimited also helped guide us to a financing option (eligible because they are energy efficient units) and a rebate. We went with that recommendation and had two units installed.

I work at home full time so the impact of having a crew here can be a significant distraction. However, Mike and the rest of the installation crew was extremely professional and courteous; it was a wonderful experience. After completion, the split ductless units significantly improved our comfort during the summer.