Gianneschi 03RE01502SR 1.5kW Single-Phase Heating Element
If you're keeping a boiler or water heater running on a boat, in a solar storage tank, or in a home heating buffer, the Gianneschi 03RE01502SR is the kind of part that quietly does its job without asking for attention. It's a 1.5kW single-phase heating element built to run on standard 230V power, and it comes complete with its own thermostat, so you're not sourcing a separate control just to get it working. That combination makes it a straightforward, drop-in replacement for anyone whose original element has worn out or stopped heating efficiently.
What stands out about this element is how flexible its use case really is. While Gianneschi is best known for marine water heaters and boilers, this particular resistance shows up just as often in home hot water systems, solar thermal storage tanks, and pellet-boiler buffer tanks. Owners who've installed similar 1.5kW elements report steady, reliable heating for households of two or more, with the built-in thermostat allowing fine control over output so the system never runs harder than it needs to.
Reliability is really the point here. A heating element with an integrated thermostat means fewer parts to fail, simpler wiring, and a more predictable service life. Whether it's replacing a tired factory-original part in a marine boiler or getting added to a solar tank that needs a backup heat source during low-sunlight months, the 03RE01502SR is built to be installed once and trusted for years.
Key Features
- 1.5kW heating output on standard single-phase power
- Integrated adjustable thermostat for precise temperature control
- Compact immersion-style design for straightforward installation
- Genuine Gianneschi part, engineered as a direct replacement element
- Suitable for both marine and general residential hot water systems
Applications
- Marine electric water heaters and boilers
- Boat and yacht domestic hot water systems
- Residential solar thermal storage tanks (backup heating)
- Pellet boiler and wood-stove buffer tanks
- General-purpose hot water storage cylinders
Specifications
- Power rating: 1.5 kW
- Voltage: 230V AC, single-phase
- Thermostat: Integrated, adjustable
- Mounting type: Immersion/threaded heating element
- Manufacturer: Gianneschi
- Part number: 03RE01502SR
Frequently Asked Questions
Q: Can the 03RE01502SR be used outside of marine applications?
A: Yes. While Gianneschi primarily manufactures marine water heaters, this heating element is compatible with many standard residential and solar storage tanks that accept a similarly rated single-phase immersion element.
Q: Does this part come with wiring or a plug already attached?
A: The element includes its integrated thermostat, but final wiring and connection should be completed by a qualified installer according to the host tank's electrical requirements.
Q: How do I know if this element will fit my existing boiler or tank?
A: Confirm your tank's threaded fitting size and existing element's power rating match this 1.5kW single-phase specification before ordering, since fitting sizes can vary between tank manufacturers.
Q: Can I adjust the water temperature with the built-in thermostat?
A: Yes, the thermostat is adjustable, allowing you to set and maintain your preferred hot water temperature without needing an external controller.
Q: Is this element a good option as a backup heat source for a solar water tank?
A: Yes, 1.5kW single-phase elements like this one are commonly used as backup or supplemental heaters in solar thermal tanks during periods of low sunlight.
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