5.9K views · 242 reactions | Are you an HVAC/R Technician looking to improve your skills? We offer tons of free training resources, including videos, articles, calculators, and quizzes, as well as training material for out in the field! Come find out how AC Service Tech, LLC uses experience, passion, and accuracy to instruct in a way that is both in-depth and easy to understand. | AC Service Tech LLC | Facebook

This is one of five library Heating, Ventilation and Air-Conditioning (HVAC) rooftop units being lifted onto the roof of the Watertown Free Public Library. The City is replacing units that are close to 20 years old. This is a great day for the future comfort of our library patrons and staff. The Library is our community cooling center in the summer and warming center in the winter. | City of Watertown, MA - Government