Hot Water on Demand
Energy is used when water flows—without storing a tank of heated water.
AHSH-3500
3.5 kW Electric Shower Heater
Purpose-Built Shower Heating
A shower-mounted electric heater with five power settings. Confirm the current approved manual before installation.
3.5 kWPower / Output
120VEnergy source / Voltage
1 × 40A dedicated breaker • GFCI-protected circuitBreakers / Circuit protection
1 × 40A dedicated breaker
1 × 40A dedicated breaker1 × AWG #8-2 copper cable with groundWire / Conductors1 × AWG #8-2 copper cable with ground
1/2-inch NPT water fittings • cold-water inlet at topWater connections
1/2-inch male NPT
1/2-inch male NPT0.48 GPM activation • 25–150 PSIFlow / Performance
FROM DEMAND TO DEPENDABLE HOT WATER
Engineered as a complete solution.
Every successful installation begins with the application and ends with verified performance.
Application-Based Sizing
Match incoming temperature and simultaneous GPM to the correct output.
Professional Verification
Confirm electrical service, breakers, conductors, plumbing and installation requirements.
Drakken Support
Approved documents, registration and warranty resources help protect the installation.
Designed around the demand
Ideal Applications
Flexible shower-heating locations where a compact 120-volt solution can be evaluated against the current installation requirements.
Mobile Applications
RVs & Trailers
Outdoor Pool Showers
Remote Outdoor Facilities
Installation Materials & Verification
Use this visual guide to identify the general type and quantity of major installation items. The approved manual, rating label and local code control the final installation.
Circuit protection
1 × 40A dedicated breaker • GFCI-protected circuit
1 × 40A dedicated breakerCopper conductors
1 × AWG #8-2 copper cable with ground
Connection fittings
1/2-inch NPT water fittings • cold-water inlet at top. Use correctly sized female NPT fittings to connect to male NPT heater ports where applicable.
1/2-inch male NPTElectrical
Dedicated overcurrent protection, copper conductors, grounding, disconnecting means, panel capacity, and any required GFCI protection must match the current approved manual and local code.
Plumbing
Operating requirement: 0.48 GPM activation • 25–150 PSI
Provide approved water shutoffs, correctly sized connections, pressure control where required, and adequate access for installation and service.
A licensed professional must verify the rating label, current installation manual, energy supply, water conditions, and applicable codes before purchase or installation.
Temperature Rise & Sizing
Outlet temperature equals inlet temperature plus the heater’s estimated temperature rise at the selected flow. Compare every electric model in this series below, then use the sizing tool and current approved documents to confirm the application.
| Model | 0.5 GPM | 1 GPM | 1.5 GPM | 2 GPM | 2.5 GPM | 3 GPM | 4 GPM |
|---|---|---|---|---|---|---|---|
| AHSH-3500 | 48°F rise | 24°F rise | 16°F rise | 12°F rise | 10°F rise | 8°F rise | 6°F rise |
Planning reference calculated from rated electrical input, not a certified performance curve. Actual temperature rise varies with voltage, efficiency, inlet temperature, pressure, installation, and operating conditions. Confirm final sizing with approved manufacturer data.
Use the Sizing ToolWhy AHSH-3500
Right-size the application
A shower-mounted electric heater with five power settings. Confirm the current approved manual before installation.
Clear professional support
Model documentation, registration, claim records, and distributor requests are available through Drakken Connect.