Over $23 million in savings since 2007
Challenge
Antiquated controls. Intolerable temperatures.
- The hospital was first constructed in 1915 and still contained many vintage HVAC mechanical /control systems
- Winter lobby temperatures dropped into the low 60’s prior to Pathian implementation
- With a very limited budget, all Energy Conservation Measures had to be budget-neutral with no more than a one-year payback
Approach
Modernize and maximize
- Pathian® provided turnkey engineering, construction management and commissioning services for all controls retrofit work over a 5 year period
- Most AHUs required only reprogramming to maximize the units efficiency
- VFDs were added to 10% of AHUs
- Processed custom and prescriptive rebates for all projects
- Implemented Pathian Analytics software to track, evaluate and sustain optimal equipment performance
- Shifted maintenance staff mindset from energy consumer to energy manager
Results
From worst to first
- Was the feature hospital in ASHE’s No More Excuses article that highlighted energy efficiency achievements of this 100-year-old hospital. If they can do it, why not you?
- At the time of article, it was only one of two hospitals nationally over 1M sq. ft. to be Energy Star certified
- Nearly $1.5 MM savings every year
- Over $23 million cumulative savings since 2007
- $1,042,000 per yr estimated electric savings (14,600,000 kWh/yr @ $0.071 per kWh)
- $457,500 per yr estimated natural gas savings (62,000 MCF/yr @ $7.38 per MCF)
- Improved Energy Star rating from 8 to 81 from 2007 to 2011
- Achieved Energy Star Certification in 2010, 2016 thru 2018, and 2021
- Building pressure is now controlled to +/- 0.001 in wc
- Reduced Site Energy Use Intensity (EUI) from 288 kBtu/sf to 196 kBtu/sf
- Substantially reduced hospital’s infection control rates; the hospital now ranks in the top percentile nationally
- After OR pressurization project, substantially reduced hospital’s infection control rates; ranked in the top percentile nationally
- ASHE E2C Award for >30% energy reduction in 2013
Other industries
Industry
Healthcare
Location
Cincinnati, Ohio
Building Facts
Surgical hospital
Built in 1915
1,260,000 sf
650 beds
ENERGY STAR® rating: 81
ASHE E2C Award for >30% energy reduction