Marriott Design Standards Module 14 [FREE]

By: Hotel Development & Design Team

In this 2,500-word deep dive, we unpack every subsection of Marriott Design Standards Module 14, including compliance checklists, common pitfalls, and 2026 update notes. Module 14 is the technical specification chapter dedicated to behind-the-wall infrastructure . Unlike decorative modules (e.g., paint colors or carpet patterns), Module 14 is governed by three masters: local plumbing codes, the Americans with Disabilities Act (ADA), and Marriott’s proprietary "Guest Reliability Index" (GRI). marriott design standards module 14

| Brand Tier | Recirculation Temp | Toilet Type | Shower GPM | Leak Detection | | :--- | :--- | :--- | :--- | :--- | | | 110°F w/ TMV | Dual-flush, concealed | 2.0 GPM (rainshower) | Mandatory, room-level | | Premium (Marriott, Sheraton, Westin) | 110°F w/ balancing valve | Pressure-assisted 1.0 GPF | 1.75 GPM | Mandatory | | Select (Courtyard, SpringHill, Fairfield) | 105°F | Gravity dual-flush 1.28 GPF | 1.75 GPM | Required at vanity only | | Extended Stay (Residence Inn, TownePlace) | 110°F w/ recirc timer | Pressure-assisted | 1.75 GPM | Optional but recommended | How to Pass a Module 14 Audit: Inspector’s Checklist When Marriott’s Global Design team (or a third-party inspector) arrives for a PAF (Pre-Opening Audit), they will run the following Module 14 tests. Use this as your pre-inspection checklist: By: Hotel Development & Design Team In this

For hotel developers, mastering Module 14 means reduced maintenance costs, higher GSS scores, and faster Marriott approvals. Ignore it, and you risk costly change orders, delayed openings, and even franchise termination. | Brand Tier | Recirculation Temp | Toilet

Module 14: Plumbing, Mechanical Systems, and Water Efficiency ensures that every guest bathroom, regardless of brand tier (from Fairfield Inn to Ritz-Carlton), delivers a consistent, safe, and luxurious experience.