Project Photos


Geothermal Installation – Holliston, MA

TJ’s most recent project involved replacing two 3-ton air-source heat pumps with two Florida Heat Pumps.   The ground loop heat exchanger is two 510-foot vertical bore, closed loop wells.   Every

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Reading, MA – Viessmann Boiler and Lochinvar Squire HWH Install

High-Efficiency Viessmann Boiler

TJ’s recently completed an installation of a Viessmann Vitodens gas-fired boiler.  This new boiler replaced the existing Burnham oil-fired boiler.   Viessmann’s state of the art technology will

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Wrentham, MA – Lochinvar WHN Gas Boiler and Squire HWH

Lochinvar Gas-Fired Boiler and Indirect Hot Water Heater Replacement

TJ’s recently completed a gas-fired boiler and indirect hot water heater replacement at an independent senior living community.  The equipment includes 

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Dover, MA – Geothermal HVAC, Viessmann Boiler, Viega Radiant Heat, Arzel, Air Exchange, Control4

This 12,000 square foot home features a geothermal system with Florida Heat Pump compressors and Trane Hyperion air handlers.  Backup heat is provided by a Viessmann Vitodens gas-fired condensing boiler. 

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HVAC system install (Viessmann, Buderus, Trane, Nortec, Arzel) – Watertown, MA

TJ’s installed multiple facets of heat and air conditioning at our customer’s home in Watertown, MA, including a Viessmann boiler, Buderus radiators, two complete Trane HVAC systems, Nortec steam humidification,

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Latest Press Releases


  • February 22, 2012 Aquatherm Fuse Weld Pipe System Certification

    TJ’s Entire Field Team is Certified

    The entire team at TJ’s is now certified to install Aquatherm fuse weld piping systems up to 4 inch.  This state of the art... Continue

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Improper Boiler Piping

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