Heating – Oil Furnaces

Cast iron Viessmann oil boilers: Discover the exceptional qualities of Viessmann oil boilers – unparalleled quality, efficiency, and reliable operation. When it comes to oil boilers, Viessmann leaves nothing to be desired.

Experience the excellence of Viessmann oil boilers, providing a dependable, long-lasting, and efficient commercial heating solution. With its sectional, triple-pass design and top-notch heat exchanger surface, this boiler guarantees simple installation, cost-effective energy usage, exceptional reliability, and an extended lifespan.

Viessmann goes beyond producing individual commercial heating equipment and components that meet their renowned standards of quality, reliability, and effectiveness. All Viessmann products are designed to be part of a cohesive matching concept, where each component perfectly complements the others. This seamless integration allows for the maximum potential of their cutting-edge technology to be realized.

Viessmann’s system technology encompasses everything you need for a dependable and cost-effective commercial heating system. From the Vitotronic control unit with remote capabilities to the powerful Vitocell DHW tanks for optimal domestic hot water convenience, and the high-quality solar thermal systems for energy-saving heating solutions.


Oil-/gas-fired sectional cast iron hot water heating boiler, with Eutectoplex triple-pass heat exchanger surface for operation with modulating water temperatures. Rated input: 490 to 4387 MBH – 144 to 1285 kW

  • Efficient and reliable operation. Modulated boiler water temperatures help conserve energy by closely matching system output to actual demand. Viessmann system controls ensure consistent, maximum system efficiency.
  • Combustion efficiency: 85% for gas and 88% for oil.
  • Problem-free transport into difficult-to-access boiler rooms thanks to sectional construction and low weight.
  • The Fastfix system facilitates a quick and easy installation.
  • Low environmental impact thanks to low-emission combustion achieved by the boiler’s triple-pass design.
  • Problem-free cleaning access facilitated by a hinged left- or right-swing combustion chamber door providing easy access to all three flue gas passageways from the front of the boiler, reducing side clearance.
  • Comprehensive standard equipment saves valuable time in installation and sourcing of product. The supply and return header system is pre-built for left or right connections and positions components properly.
  • Consistent and reliable DHW supply through integration with Viessmann indirect-fired stainless steel domestic hot water tanks.
  • Boilers, controls, domestic hot water tanks, and heating system components are design-matched to work together. All components are compatible and are therefore quickly and easily installed.
  • Standardized LON-BUS enables easy communication with building management systems.
  • Maximum quality assurance. All components bearing the Viessmann name are designed and manufactured at company-owned production facilities.


Solid Construction— The Patriot 80 rear flue furnace boasts a cabinet made of heavy gauge galvanized steel, ensuring durability and strength. To retain heat efficiently, the cabinet is lined with foil-backed fiberglass insulation. The primary heat exchanger is crafted from hand-welded steel, ensuring a long-lasting performance.

What sets the rear flue mode apart is the inclusion of a welded secondary heat exchanger. This ingenious feature extracts additional heat from the flue gas before it is vented out, significantly reducing heat loss up the chimney and enhancing the overall furnace efficiency. Furthermore, the furnace is equipped with a high-efficiency Beckett Oil Burner that guarantees quiet and reliable operation, thanks to its positive alignment mechanism.

Flexible & Efficient— The Patriot 80 residential oil furnace product family offers a comprehensive range of models to suit various needs. Each model in the Patriot 80 series is capable of being fired at multiple firing rates, providing you with a broader selection to match your specific heating requirements. Moreover, all Patriot 80 oil furnaces boast A.F.U.E. Ratings surpassing 80%, ensuring high efficiency and energy-saving benefits.



Oil Furnace Repair and Maintenance Service in Central MA

TNC Mechanical is your trusted partner for all your oil furnace needs in Central MA. Are you in search of reliable oil furnace repair companies near you? Look no further! Our expert team is here to provide top-notch oil furnace repair, maintenance, and installation services. When it comes to oil furnace repair, TNC Mechanical is your go-to choice. Our experienced technicians are available near you in Central MA to swiftly address any issues your furnace may have. From minor repairs to comprehensive maintenance, we ensure your oil furnace operates efficiently throughout the seasons. In need of oil furnace installers, you can trust? We’ve got you covered! Our skilled professionals specialize in seamless oil furnace installations, ensuring your heating system is set up for optimal performance and longevity.

As authorized oil furnace dealers, we take pride in offering a variety of options to suit your needs. From maintenance to repairs and installations, TNC Mechanical is your one-stop solution for oil furnace services in Central MA. Choose TNC Mechanical for reliable and efficient oil furnace solutions. Whether you’re searching for oil furnace repair companies, maintenance, or installations near you, we’re committed to delivering top-tier services. Contact us today to experience the comfort and reliability of our oil furnace services in Central MA.