Design, Construction and Operation of Sustainable High Performance Health Care Facilities
ASHRAE Standing Standard Project Committee 189.3

1. PURPOSE
1.1 The purpose of this standard is to provide minimum requirements for the siting, design, construction, and operation of high-performance, sustainable health care facilities to
a. Reduce emissions, enhance occupant health and comfort, conserve water, protect local biodiversity and
ecosystems services, promote sustainable and regenerative materials cycles, and enhance resilience; and
b. Support the goal of development that meets the needs of the present without compromising the ability of future generations to meet their own needs, including decarbonization of the building environment.
1.2 This standard provides requirements that can be adopted by national and local jurisdictions.
2. SCOPE
2.1 This standard applies to patient care areas and related support areas within health care facilities and their site, including hospitals, outpatient facilities, residential health, care, and support facilities.
2.2 This standard applies to new buildings, additions to existing buildings, and those alterations to existing buildings that are identified within the standard.
2.3 This standard provides procedures for the integration of sustainable principles into the health care facility design, construction, and operation process, including the following:
a. Integrated design
b. Conservation of water

c. Conservation of energy
d. Indoor environmental quality (IEQ)
e. Construction practices
f. Commissioning
g. Operations and maintenance
2.4 The requirements in this standard shall not be used to circumvent any applicable safety, health, reimbursement, or environmental requirements.