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guideline written for healthcare facilities, is a consolidated document listing out the design requirements for all new construction and major renovation healthcare projects. Compliance to this document, which stipulates minimum performance design standards, ensures that facilities will be of the highest quality. This is an international guideline based on best practice.  \nSubstantial variance from this Design Manual may be proposed by the design consultant to promote new concepts and design enhancements. Variance shall not conflict with Federal Regulations, Local Municipality Laws, Executive Orders, or the needs of the end users. Substantial variance shall be reviewed by each local authority.  \nThis document is intended for the Architect/Engineer and others engaged in the design and renovation of healthcare facilities. Where direction described in applicable codes are in conflict, the AE shall comply with the more stringent requirement. The A/E is required to make themselves aware of all applicable codes and ordinances and assure compliance thereto.  \nThe document should be read in conjunction with other parts of the International Health Facility Guidelines (Part A to Part F) & the typical room data sheets and typical room layout sheets.  \nKey Objectives  \nThe HVAC systems should be designed to achieve the following key objectives.  \nMechanical services that deliver the anticipated levels of comfort and functionality. A zero-tolerance approach to patient safety and infection control.  \nCompliance with the applicable codes and standards.  \nAppropriate pressure differentials between adjacent spaces and departments in clinical facilities. Adherence to air changes per hour requirements as per code.  \nReliable operation at the extreme outside design temperatures.  \nReducing operating and maintenance costs shall be a key component in all new constructions. Flexibility for future modification and expansion.  \nEnergy efficiency & appropriate local or international green building code such as LEED, BREAM, Green Star etc.  \nAn appropriate level of consistency across facilities, recognizing the specific demands of each facility and clinical specialty.  \nAbbreviations & Reference Standards List  \nAbbreviations List  \n\n| Abbreviation | Description |\n| --- | --- |\n| | Delta T |\n| A/E | Architect Engineer |\n| ACH | Air Changes Per Hour |\n| AHU | Air-Handling Unit |\n| AII | Airborne Infection Isolation |\n| BMT | Bone Marrow Transplant |\n| BSC | Biological Safety Cabinet |\n| C | Celsius |\n| CAPEX | Capital Expenditure |\n| CD | Construction Documents |\n| CFC | Chlorofluorocarbon |\n| cfm | Cubic Feet Per Minute |\n\nInternational  \nHealth Facility Guidelines © TAHPI August 2026 Page 10  \nPart E: Health Facility Briefing & Design Engineering  \n\n| Abbreviation | Description |\n| --- | --- |\n| CO2 | Carbon-dioxide |\n| CRAC | Computer Room Air Conditioner |\n| CT | Computerized Tomography |\n| CV | Constant Volume |\n| DB | Dry Bulb |\n| DD | Design Development |\n| DOAS | Dedicated Outside Air System |\n| DX | Direct Expansion |\n| EEG | Electroencephalography Laboratory |\n| EER | Energy Efficiency Ratio |\n| EMG | Electromyography |\n| ERCP | Endoscopic Retrograde Cholangiopancreatography |\n| ETO | Ethylene Oxide |\n| fpm | Feet Per Minute |\n| fps | Feet Per Second |\n| GE | General Exhaust |\n| Gpm | Gallons Per Minute  US |\n| GWP | Global Warming Potential |\n| HCFC | Hydro chlorofluorocarbons |\n| HEPA | High-Efficiency Particulate Arrestance |\n| HFC | Hydrofluorocarbons |\n| HFO | Hydrofluoro-Olefins |\n| Hp | Horsepower |\n| HVAC | Heating, Ventilation and Air Conditioning |\n| HX | Heat Exchanger |\n| ICU | Intensive Care Unit |\n| IAQ | Indoor Air Quality |\n| IMRT | Intensity-Modulated Radiation Therapy |\n| I/O | Input/output |\n| IR | Infrared Radiation |\n| IT | Information Technology |\n| IRMM | Infection Risk Management Mode |\n| kg | Kilograms |\n| k","cbCaincsbhDhRD5j","https://ap.wps.com/l/cbCaincsbhDhRD5j","pdf",1861124,36,"English","# Key Objectives\n## Abbreviations & Reference Standards List\n## Reference Standards List","[{\"question\":\"What is the purpose of this HVAC design guideline for healthcare facilities?\",\"answer\":\"It consolidates design requirements for new construction and major renovation healthcare projects, setting minimum performance design standards to ensure high-quality facilities.\"},{\"question\":\"Under what conditions can a design consultant propose variance from the Design Manual?\",\"answer\":\"Variance may be proposed to promote new concepts or enhancements, but it must not conflict with federal regulations, local laws, executive orders, or end-user needs, and must be reviewed by local authorities.\"},{\"question\":\"Which key HVAC objectives does the document require?\",\"answer\":\"Systems must deliver anticipated comfort and functionality, apply zero-tolerance for patient safety and infection control, meet applicable codes and standards, maintain appropriate pressure differentials and air-change requirements, and operate reliably at extreme outside design temperatures while supporting cost reduction and energy efficiency.\"}]","Mechanical HVAC Engineering Design - Part E - Health Facility Briefing & Design Engineering | PDF",91]