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energy efficiency retrofit
consulting for multifamily and
commercial buildings

LL87/09 Energy Audit & Retro-commissioning Gallery

LL87/09 - To reduce © 2015 IntelliGreen Partners LLC

Replace to reduce "Stack Effect"

LL87/09 - The owner of this office supply distributor installed insulated panels to reduce window size and also installed new double-paned Low-E windows. © 2015 IntelliGreen Partners LLC

Double-paned Low-E windows

LL87/09 energy auditor notes that this custom made radiator cover blocks the heat in the front but at least the radiator is accessible for replacing a steam trap. © 2015 IntelliGreen Partners LLC

Poorly designed radiator cover

LL87/09 energy auditor will note that tenants have removed a steam radiator and installed through-the-wall PTAC units which can lead to heat distribution problems elsewhere. Establish a policy of replacing broken steam traps. © 2015 IntelliGreen Partners LLC

Replace broken steam traps

LL87/09 - This simple radiator grille with opening at bottom and front enables heat to warm the room efficiently and can be easily accessed for repairs. © 2015 IntelliGreen Partners LLC

Well-designed radiator cover

LL87/09 energy auditor will note that tenants have removed a steam radiator and installed through-the-wall PTAC units which can lead to heat distribution problems elsewhere. © 2015 IntelliGreen Partners LLC

PTACs waste heat

LL87/09 - This simple radiator grille with opening on front and bottom enables heat to warm the room and can be easily accessed for repairs. © 2015 IntelliGreen Partners LLC

Heat is well distributed

LL87/09 energy auditor will note that tenants have removed a steam radiator and installed through-the-wall PTAC units which can lead to heat distribution problems elsewhere. © 2015 IntelliGreen Partners LLC

Replace broken steam traps

LL87/09 energy auditor will recommend replacing the painted-over non-functioning steam trap on a two-pipe steam radiator. Remove the air vent meant only for a one-pipe steam radiator. © 2015 IntelliGreen Partners LLC

Replace painted-over trap.

LL87/09 energy auditor will note that tenants have removed a steam radiator and installed through-the-wall PTAC units which can lead to heat distribution problems elsewhere. © 2015 IntelliGreen Partners LLC

PTACs waste heat

LL87/09 energy auditor will recommend replacing the painted-over non-functioning steam trap on a two-pipe steam radiator. Remove the air vent meant only for a one-pipe steam radiator. © 2015 IntelliGreen Partners LLC

Remove vent. Replace trap.

Recommended energy efficiency measures. © 2015 IntelliGreen Partners LLC

Seal leaky windows

LL87/09 energy auditor will recommend weather sealing the leaky atrium which is causing water damage to the ceiling below. © 2015 IntelliGreen Partners LLC

Weather seal skylight

LL87/09 energy auditor notes that the owner of this warehouse replaced his old T12 fluorescent fixtures with more efficient T5 fluorescent fixtures and occupancy sensors. © 2015 IntelliGreen Partners LLC

Replaced T8s w/ T5s

LL87/09 energy auditor will recommend that the incandescent chandelier bulbs be replaced with more efficient LEDs. Add attractive chandelier shades if the LED base seems too large. © 2015 IntelliGreen Partners LLC

Replace with LED candelabra

LL87/09 - This co-op continues to save energy and money annually by replacing its old incandescent light bulbs with more efficient compact fluorescent light bulbs (CFL) and LEDs in each hallway. © 2015 IntelliGreen Partners LLC

Save with LEDs

LL87/09 will recommend that the 7 watt incandescent light bulbs at hallway exits be replaced with more efficient LEDs. © 2015 IntelliGreen Partners LLC

Use LED exit sign

LL87/09 energy auditor notes that the owner of this warehouse is saving money by adding light sensors to his exterior lights which used to be on 24/7. © 2015 IntelliGreen Partners LLC

Outdoor light sensors

LL87/09 Energy Auditor will recommend sealing holes in the exterior walls to prevent heat loss in the winter and heat gain in the summer. © 2015 IntelliGreen Partners LLC

Seal wall penetrations

LL87/09 energy auditor measures the condensate return line temperature. If pipe is too hot, the steam traps may be broken in the open position. © 2015 IntelliGreen Partners LLC

Condensate pipes too hot!