NYC HVAC Retrofit Case Studies
Explore documented HVAC retrofit projects completed by GRR Cooling Experts in hospitals, healthcare facilities, and commercial buildings across New York City. Each case shows existing conditions, project constraints, execution approach, and measured field results.
Real NYC Projects
Limited Shutdown Windows
Measured Field Results
NYC HVAC Retrofit Case Studies
Explore documented NYC HVAC retrofit projects completed in hospitals, healthcare facilities, and commercial buildings. Each case shows existing conditions, project scope, execution constraints, limited shutdown windows, and measured field results.
12,000 CFM | 7-Hour Window
Hospital Return Fan Retrofit for OR Support
Two ECM fans, custom duct transitions, a new control panel, and stable return airflow delivered under active hospital conditions.
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30-Ton RTU | 7 Hours Onsite
Live Rooftop HVAC Replacement
Existing RTU removed, new 30-ton unit crane-set, duct transitions installed, and commissioned within one onsite window.
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2-Coil System Rebuilt as 3 Coils
Hospital Chilled-Water Coil Section Retrofit
The coil section was rebuilt around real access, piping, drainage, support, and serviceability constraints.
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25,000 CFM | 2.5 in. S.P.
Return Fan EC Fan Wall Upgrade
Three direct-drive EC fans, a new mounting panel, controls, and startup verification modernized the existing hospital return section.
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15,000 CFM | 3.0 in. S.P.
Emergency Supply Fan Array Retrofit
A legacy supply fan was replaced with three direct-drive EC fans adapted to existing power, access, and restart conditions.
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22,035 CFM | N+1 Redundancy
Custom Hospital Return Fan Retrofit
Four EC fans, custom transitions, modern controls, and a modular casing replaced the original tubular fan system.
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6,000 CFM | Tight-Access Installation
Hospital Exhaust Fan Retrofit
A failed ceiling-mounted fan was replaced with a new EC fan package, speed control, duct reducers, and final sealing.
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2 Chilled-Water Coils | 6 Hours
Live Hospital Coil Section Replacement
A custom aluminum coil section, drip pan, piping, insulation, and condensate line were installed within one live shift.
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9,000 CFM | 6-Hour Live Window
EC Fan Array Retrofit with Redundancy
Three direct-drive EC blowers, Carel controls, and an extra capacity module replaced the legacy belt-driven system.
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22,000 CFM | 10-Hour Live Window
Hospital AHU Fan Array Modernization
Six direct-drive EC fans, Carel controls, and modular redundancy restored stable airflow without interrupting hospital operations.
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12,000 CFM | 7-Hour Window
Hospital Return Fan Retrofit for OR Support
Two ECM fans, custom duct transitions, a new control panel, and stable return airflow delivered under active hospital conditions.
View Case Study ›
30-Ton RTU | 7 Hours Onsite
Live Rooftop HVAC Replacement
Existing RTU removed, new 30-ton unit crane-set, duct transitions installed, and commissioned within one onsite window.
View Case Study ›
2-Coil System Rebuilt as 3 Coils
Hospital Chilled-Water Coil Section Retrofit
The coil section was rebuilt around real access, piping, drainage, support, and serviceability constraints.
View Case Study ›
25,000 CFM | 2.5 in. S.P.
Return Fan EC Fan Wall Upgrade
Three direct-drive EC fans, a new mounting panel, controls, and startup verification modernized the existing hospital return section.
View Case Study ›
15,000 CFM | 3.0 in. S.P.
Emergency Supply Fan Array Retrofit
A legacy supply fan was replaced with three direct-drive EC fans adapted to existing power, access, and restart conditions.
View Case Study ›
22,035 CFM | N+1 Redundancy
Custom Hospital Return Fan Retrofit
Four EC fans, custom transitions, modern controls, and a modular casing replaced the original tubular fan system.
View Case Study ›
6,000 CFM | Tight-Access Installation
Hospital Exhaust Fan Retrofit
A failed ceiling-mounted fan was replaced with a new EC fan package, speed control, duct reducers, and final sealing.
View Case Study ›
2 Chilled-Water Coils | 6 Hours
Live Hospital Coil Section Replacement
A custom aluminum coil section, drip pan, piping, insulation, and condensate line were installed within one live shift.
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What These NYC HVAC Retrofit Case Studies Cover
Projects include EC fan array retrofits, AHU upgrades, chilled-water coil replacements, emergency ventilation work, and installations completed inside active facilities with limited shutdown windows.
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