Description
MRCOOL Electric Tank Water Heater
The MRCOOL Electric Tank Water Heater delivers reliable, energy-efficient hot water for residential applications. Built with a heavy-duty steel tank and premium insulation, this water heater is designed for long-term performance and easy installation. Compatible with standard 240V electrical service.
Technical Specifications
| Model / SKU | MTWH04540ET |
| Brand | MRCOOL |
| Series | Electric Tank Water Heater |
| Refrigerant | See product label |
| Electrical | 208-230V / 60Hz |
| Weight | 115.0 lbs (52.16 kg) |
| Product Type | Water Heater |
| AHRI Certified | Yes — AHRI certification number available upon request |
Installation & Product Tips
- Electrical Requirements: This water heater requires a dedicated 240V/30A circuit with a double-pole breaker. Do not connect to a shared circuit.
- Pressure Relief Valve: Always install the provided T&P relief valve and route the discharge pipe to within 6 inches of the floor per local codes.
- Anode Rod: Check and replace the anode rod every 3–5 years to extend tank life and prevent corrosion.
- Temperature Setting: Set the thermostat to 120°F (49°C) for optimal energy efficiency and to prevent scalding.
- Sediment Flushing: Flush the tank annually to remove sediment buildup and maintain heating efficiency.
Frequently Asked Questions
Compatible Accessories
Browse our full selection of MRCOOL accessories and replacement parts to complement this product. Contact us for compatibility questions.
Warranty Information
MRCOOL Electric Tank Water Heater Warranty:
- Tank: Limited warranty — see product documentation for term
- Heating Elements: Limited warranty — see product documentation for term
- Parts: 1-year limited warranty on all other components
Register your product within 30 days of installation to activate full warranty coverage. Warranty is void if unit is installed improperly or modified.
Need Help Choosing the Right Product?
Our HVAC specialists are ready to help you select the right system for your application, verify compatibility, and answer any technical questions.
Contact UsWith over 15 years in the HVAC industry and 500+ MRCOOL systems personally installed, we bring hands-on expertise that translates directly into accurate product guidance. You get the right system the first time — backed by our price match guarantee and free expert support.
