Hot Water System Diagram
This full-system hot water diagram shows how cold water is supplied to the heater, how hot water is distributed to all fixtures, and how the system integrates with the overall plumbing architecture.
The diagram supports both heater options: an on-demand gas water heater or a 10–20 gallon electric tank water heater, both located in the garage.
Full-System ASCII Diagram
┌──────────────────────────────────────────┐
│ BATHROOM (PLUMBING HUB) │
│ │
│ 1. Cold Water Manifold │
│ │ │
│ ▼ Cold Feed to Heater │
└────────┬─────────────────────────────────┘
│
│ 2. Cold Supply Line to Garage
▼
┌──────────────────────────────────────────┐
│ GARAGE AREA │
│ │
│ ┌───────────────────────────────┐ │
│ │ 3. Hot Water Heater │ │
│ │ (Gas On-Demand OR │ │
│ │ Electric Tank 10–20 gal) │ │
│ └──────────────┬────────────────┘ │
│ │ Hot Water Output │
│ ┌──────────────▼───────────────┐ │
│ │ 4. Hot Water Manifold │──────┼───────────────► 7. Kitchen Sink
│ └──────────────┬───────────────┘ │
│ │ │
│ │ │
│ ┌──────────────▼───────────────┐ │
│ │ 5. Bathroom Shower (Hot/Cold) │ │
│ └──────────────┬───────────────┘ │
│ │ │
│ ┌──────────────▼───────────────┐ │
│ │ 6. Bathroom Sink (Hot/Cold) │ │
│ └──────────────┬───────────────┘ │
│ │ │
│ │ │
│ (Optional) Hot Water Branch ───────────► 8. Passenger-Side Exterior Outlet
│
└──────────────────────────────────────────┘
NOTES:
- Cold water enters the heater from the bathroom manifold.
- Hot water is distributed from the garage to all fixtures.
- Optional hot water to the passenger-side outlet is supported.
- If an electric tank heater is used, the propane branch remains capped.
Key Components
- 1. Cold Water Manifold: Supplies cold water to the heater.
- 2. Cold Supply Line: Routed from bathroom to garage.
- 3. Hot Water Heater: Gas on-demand or electric tank.
- 4. Hot Water Manifold: Distributes hot water to all fixtures.
- 5. Bathroom Shower: Hot and cold supply.
- 6. Bathroom Sink: Hot and cold supply.
- 7. Kitchen Sink: Hot and cold supply.
- 8. Passenger-Side Exterior Outlet (Optional): Hot water available if desired.
Routing & Integration Notes
- Shortest hot water run: Bathroom receives hot water quickly due to proximity.
- Insulated hot water lines: Reduce heat loss and improve efficiency.
- Protected routing: All lines run inside conditioned space where possible.
- Optional branch: Passenger-side outlet can receive hot water if needed.
- Gas heater option: Uses propane from Tank 1 via the future-ready branch.
- Electric heater option: Requires electrical supply; propane branch remains capped.
Related Pages
- Hot Water System Plan
- Plumbing Master Plan
- Plumbing Master Diagram
- Propane Routing Master Plan
- Propane Installation Plan
How This Diagram Will Evolve
Once the final water heater type is selected, this diagram will be updated with heater-specific details such as venting (gas), electrical requirements (electric), mounting hardware, and safety clearances.
The overall routing and system architecture will remain the same regardless of heater choice.