Grossmont Hospital

Description of Facility and Operations

Grossmont Hospital is a 672,832 square foot campus of hospital and medical office buildings located at 5555 Grossmont Center Dr, La Mesa, CA 91942. The campus includes the following buildings: North Wing, South Wing, East Tower, West Tower - EDCCU, H&V, Women's Center, Behavioral Health (BHU), Physical Rehab, Cancer Center, Grossmont Medical Terrace (GMT), & Main Building.

The campus uses a combined heat and power (CHP) cogeneration system which provides approximately 96% of the site's electricity use. Multiple building automation systems (BAS) are used to control HVAC systems on the campus, including Siemens Insight & Desigo, Wonderware, Opto 22, and Climatec Alerton controls. These systems combine to administer ventilation, temperature, pressure, and humidity controls within these buildings. Major constant-volume and variable-volume air systems operate at all times, serving a combination of hospital procedure rooms, patient rooms, lobbies, offices, support areas, and medical equipment rooms. Lighting is primarily fluorescent, and typically operate either 24/7 or with a manual switch depending on the space type. Exterior lighting is primarily metal halide and controlled by timer.

Benchmarking

- Grossmont Hospital spends $5.78/sq. ft. for utilties.

- The building's energy use per square foot is 37% higher than the national median energy use intensity for hospitals.

Key Opportunities

• The cogeneration plant produces 96% of the site’s electricity use, which is an extremely high threshold. Energy savings opportunities which allow the reduction of electricity use may reduce the necessary output of cogeneration production for the site.

• Make-up water and blowdown water from cooling tower are not metered; install meters and pursue sewer charge credit for drift and evaporative losses. Est. cost per meter = $500 - $1,500.

Opportunity Name
Opportunity Type
Total Annual Savings
Implementation Cost
Project Payback
FY Start
Implementation Status
Connected Commissioning of Airside Equipment
Connected Commissioning
$245,300
$660,000
2.7
FY 2020
Not Started
Interior LED Lighting Upgrade (Lamp Replacement)
Lighting Upgrade
$201,600
$746,900
3.7
FY 2020
Not Started
Connected Commissioning of Chilled Water (CHW) Plant
Connected Commissioning
$74,600
$300,000
4
FY 2020
Not Started
Exterior LED Lighting Fixture Retrofit (Building Perimeter)
Lighting Upgrade
$3,100
$53,400
17
FY 2021
Not Started
Capital Upgrade - Replace/Upgrade Surgery Room Air Handlers Units (AHUs) and Disable Air-Cooled Booster Chiller
Capital Improvement
$28,900
$810,000
28
FY 2021
Not Started
Capital Upgrade - Replace Chilled Water (CHW) Coils and Implement Controls Optimization at the Air Handler (AHU) and Zone Level in West Tower - EDCCU
Capital Improvement
$53,900
$1,140,000
21.1
FY 2023
Not Started
Capital Upgrade - Replace and Consolidate Existing End-of-Life Air Handlers Units (AHUs) Serving Physical Rehab
Capital Improvement
$34,400
$780,000
22.7
FY 2023
Not Started
Capital Upgrade - Replace and Consolidate Existing End-of-Life AHUs with High Efficiency Air Handlers Serving Women's Center
Capital Improvement
$23,400
$540,000
23.1
FY 2023
Not Started
Capital Upgrade - Replace and Consolidate Existing End-of-Life Air Handlers Units (AHUs) Serving Behavioral Building
Capital Improvement
$17,900
$480,000
26.8
FY 2024
Not Started
Capital Upgrade - Replace and Consolidate Existing End-of-Life Air Handlers Units (AHUs) Serving Main Building, North Wing, and South Wing
Capital Improvement
$65,000
$2,280,000
35.1
FY 2024
Not Started
Capital Upgrade - Replace and Consolidate Existing End-of-Life Air Handlers Units (AHUs) Serving Cancer Center
Capital Improvement
$5,500
$240,000
43.6
FY 2024
Not Started
Capital Upgrade - Implement Full Zone DDC Conversion and Replace Existing End-of-Life Air Handlers Units (AHUs) with High Efficiency Air Handlers Serving Main Building
Capital Improvement
$8,900
$420,000
47.2
FY 2024
Not Started
Total
$762,500
$8,450,300
11.1