Scope. This handbook provides the Naval Facilities
Engineering Command's policy and criteria for selection and
design of heating, ventilating, air conditioning (HVAC), and
dehumidifying systems as applied to Naval shore facilities.
Cancellation. This handbook cancels and supersedes
NAVFAC design manual DM-3.03, Heating, Ventilation, Air
Conditioning and Dehumidifying Systems dated January 1987.
Purpose. Policy and criteria included in this handbook
are provided to ensure quality and consistency in design of HVAC
and dehumidifying systems with minimum life cycle costs which
satisfy functional and operational requirements of Naval
facilities and which provide a healthy and safe environment for
Policy. Design of HVAC and dehumidifying systems shall
be in accordance with guidelines included in this handbook. The
material included in Sections 5 through 12 of this handbook is
provided for information and should be applied only as required
to supplement the experience of the designer or design reviewer.
NAVFAC policy is to select simple, easy to maintain and operate,
HVAC systems designed based upon well established principles and
constructed of proven materials that satisfy space temperature,
humidity, and indoor air quality (IAQ) requirements within energy
budgets prescribed in MIL-HDBK-1190, Facility Planning and Design
Guide. Use the following procedures for selection and design of
a) Ensure that passive building design features, e.g.,
building orientation, shading, building envelope, and insulation
are optimized to reduce heating and cooling loads. Such passive
techniques reduce the requirement to use complex, maintenance
intensive, HVAC systems and equipment to meet the facility energy
b) Place special emphasis on keeping HVAC systems,
including controls, simple and easy to operate and maintain.
Table 1, par. 2.4, and subparagraphs provide recommendations on
types of air conditioning systems that should be considered for
the most common applications. The least complex of the
recommended types should be selected based on functional
requirements, ease of maintenance, and the design energy budget.
For example, a system requiring extensive use of complex
controlled devices and associated controls (e.g., complex heat
recovery systems) should only be considered when there are no
practical alternatives to obtain design energy budgets prescribed