HVAC Replacement Project
In February of 2019, the Engineering Firm SMRT was hired to
perform a complete assessment of the Nashua Police
Department’s HVAC System. Some of the highlights of their
assessment follow
The HVAC systems for the Police Station were designed in two
stages with the original part of the building designed in 1977
and a subsequent Addition Project in 1999
The 1977 design is based on water source heat pumps and
the 1999 design is based on Variable Air Volume System
The 1977 design incorporates a Pistol Range and a Fleet
Maintenance Garage
47 of the 49 existing heat pumps are charged with R22
refrigerant. This material will be unavailable in the year 2020
The Air-cooled Condensing Unit that cools the air prior to it
being introduced to the heat pumps has failed and has been
removed causing the heat pumps to be overworked
