Detective Bureau
Several windows no longer have a rubber gasket surrounding
the window allowing cold air, bugs, and moisture to enter the
building. This is also a large source of heat/energy loss
throughout the building
Professional Standards
New vs Old Window Comparison
Bright orange/yellow thermal image Pink/blue thermal image shows very
shows significant heat loss in original little heat loss in newer window in new
window portion of building
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
HVAC Replacement Project
All equipment controlling the Pistol Range is original to the
1977 building, in poor condition and beyond it’s useful life.
Range officers have recently been blood tested and showed
high lead levels due to the systems inefficiencies
The Fleet Maintenance Garage System is also all original to
the 1977 building. It is in poor condition and beyond it’s
useful life
The Variable Air Volume System is original to the 1999
addition
There are two main hot water pumps supplying hot water to
the addition and operate on a lead/standby fashion. One of
those pumps is not operating due to a faulty isolation valve
leaving the building with no backup system
Many of the components of this system are currently
working but are charged with R22 and will not be able to be
repaired if they fail
HVAC Mechanical Room
HVAC Mechanical Room
HVAC Mechanical Room
HVAC Mechanical Room
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BA Table 2-A: MUNICIPAL BUILDINGS - Energy Use and Relative Efficiency
Bowron UU 5N le Seareseaet ll Pesce wastes Ct
Nashua Municipal Buildings (kBTU/SF) | ($/SF) Pee Gate) ery) is)
City Hall 186 $2.24 45% 4,285,768 $116,097
Court Street Building 152.4 $2.20 N/A 2,093,958 $41,971
Department of Public Works 195.3 | $2.66 45% 2,344,065 $65,632
Fire Dept - Amherst Street 113.9 $1.52 50% 1,104,370 $24,117
Fire Dept - Lake Street 213.9 $2.89 25% 2,315,081 $51,901
Fire Dept - Spit Brook Road 158.2 $2.14 30% 818,118 $18,211
Fire Dept - East Hollis Street (Administration) 167.6 $2.22 30% 2,168,319 $47,566
Fire Dept - Pine Hill Road 155.7 | $2.14 30% 495,203 $10,762
Fire Dept - Conant Road 181.3 $2.59 28% 1,260,071 $26,238
Fire Rescue Communications Center 142.1 $1.88 32% 841,750 $21,672
Hunt Memorial Building 88 | $1.29 N/A N/A N/A
Nashua Library 117.9 | $1.65 75% 3,301,274 $109,459
Nashua Transit Station (under renovation) 299.9 | $4.53 N/A 196,032 $5,221
Parking Garage - Elm Street 13.6 | $0.38 N/A 370,884 $34,000
Parking Garage - High Street 14.3 $0.38 N/A 260,506 $23,000
Parks & Recreation Administration 87.7 | $1.32 N/A 884,757 $15,226
lice Dieta eiits seo = | $4265) 526 J 9,896,587..] $274,279.
Public Health/Community Services Division 122.4 | $1.58 70% 1,280,339 525,443
Solid Waste Office (Landfill) 2417 $4.26 N/A 507,994 $16,915
Stadium - Holman N/A N/A N/A 1,190,121 $34,913
Stadium - Stellos N/A N/A N/A 925,334 $48,977
Street Dept 118.0 | $2.39 N/A 4,831,761 $101,247
Traffic and Parking Dept 147.1 $2.57 N/A 342,275 $9,259
BA Table 2-B: INFRASTRUCTURE - Energy Use and Relative Efficiency
soulve ey) cul wane ame He cated
Nashua Municipal Buildings (kBTU/SF) | ($/SF) Percentile* (%) (kaTU) (s)
Street Lights N/A N/A N/A 7,173,587 $700,437
Wasterwater Treatment Facitly 5.0 N/A N/A 27,761,312 $877,240
* CBECS (Commercial Buildings Energy Consumption Survey) Energy Performance Percentile refers to the specific buildings’ energy performance relalive to that of
similar building types evaluated by the survey. Not all building types are evaluated: therefore, not all have percentiles listed.
i Yellow: Percentiles >50% (CBECS) Blue: Percentiles <= §0% (CBECS) Gray: No matching CBEC category for comparison
April 8, 2011 Nashus Energy Plan me .
Report prepared by The Jordan Institute
2011 City of Nashua Municipal Buildings Energy Use
and Relative Efficiency Assessment
The Nashua Police Department scored a 15% efficiency
rating
Page 30
