The Quick Heating Element FVSLRSB12110A00 is a 110V, 1200W direct-replacement immersion element for Quick B3 and Sigmar marine water heaters — it threads into the original tank boss to restore full heating without buying a new unit. If your onboard water warms slowly or stays cold on shore power, a failed element is usually the cause, and replacing it is the fastest, most cost-effective fix.
The Quick FVSLRSB12110A00 element at a glance
| Specification | Detail |
|---|---|
| Part number | FVSLRSB12110A00 |
| Voltage | 110V AC (North American shore power / 110V inverter) |
| Wattage | 1,200 W |
| Approx. current draw | ~10.9 A at full load |
| Approx. cold resistance | ~10 ohms (R = V²/P) |
| Fits | Quick B3 series & Sigmar heaters (110V spec) |
| Connection | Threaded flange into original tank boss — no adapters |
What is the Quick FVSLRSB12110A00 heating element?
The FVSLRSB12110A00 is a marine-grade immersion heating element from Quick, an Italian manufacturer specializing in onboard electrical and plumbing systems. It operates at 110V AC and delivers 1,200 watts, matching North American shore power standards, and is engineered as a factory-spec replacement for Quick's B3 series and Sigmar water heaters that share the same tank interface.
The element uses a threaded flange that mates directly with the existing boss on the heater tank, so no adapters or modification are required. Its 1200W output is sized to heat the typical 6- to 11-liter capacity of compact marine water heaters to usable temperature within a reasonable dockside timeframe, without overloading a standard 15A marina pedestal circuit.
How do I confirm the element is the failed part?
Before ordering, confirm the element — not the thermostat or wiring — is the problem. Disconnect shore power completely, then set a multimeter to resistance (ohms) and probe the two element terminals. A healthy 1200W / 110V element reads roughly 10 ohms. Infinite resistance (open circuit) confirms a burned-out element; near-zero ohms indicates a short that can trip breakers.
If the element reads correctly but water still won't heat, move to the thermostat. Most Quick and Sigmar heaters use a capillary-type thermostat that can be tested by temporarily bypassing it; if bypassing restores heating, replace the thermostat instead. The most common reasons an element itself fails are limescale buildup on the sheath (which insulates it and causes internal overheating) and corrosion at the electrical terminals in the humid bilge environment.
Which heaters accept this element?
The FVSLRSB12110A00 fits Quick B3 series and Sigmar marine water heaters built to the 110V / 1200W specification. Before purchasing, check the data plate on the tank to verify both voltage (110V vs. 220V) and wattage — installing a mismatched wattage or voltage element can damage the thermostat, trip breakers, or create a fire hazard.
| Heater model / series | Voltage / wattage | Compatible with FVSLRSB12110A00? |
|---|---|---|
| Quick B3 Series (110V spec) | 110V / 1200W | Yes — direct replacement |
| Sigmar Water Heater (110V spec) | 110V / 1200W | Yes — direct replacement |
| Quick B3 Series (220V spec) | 220V / 1200W | No — requires 220V element |
| Other brands (Isotemp, Webasto) | Varies | Not confirmed — verify thread spec |
How do I replace the Quick heating element?
Element replacement on a Quick B3 or Sigmar heater is a straightforward dockside job with basic tools. Shut off shore power at the breaker panel, let the tank cool completely, and depressurize the water system by opening a hot tap until flow stops.
- Disconnect wiring: Remove the access cover and photograph the wiring before disconnecting; label wires if needed.
- Drain the tank: Attach a hose to the drain valve, route it to the bilge or a bucket, and open the valve fully.
- Remove the old element: Use an element wrench or large adjustable wrench, turning counter-clockwise. Keep a rag ready for residual water.
- Inspect and prep: Clean the tank boss threads, check for corrosion, and apply two to three wraps of PTFE thread tape to the new element.
- Install the FVSLRSB12110A00: Thread in by hand, then snug with a wrench. Do not overtighten — the boss is typically brass or aluminum.
- Reconnect and test: Reconnect wiring per your photo, close the drain, refill the tank, restore power, and confirm it heats within the normal cycle time.
Never energize the element with the tank empty or partially filled — dry firing will burn out a new element immediately.
Frequently asked questions
Is the FVSLRSB12110A00 compatible with both B3 and Sigmar heaters?
Yes. It is factory-designed to fit both Quick B3 and Sigmar marine water heaters built to the 110V / 1200W specification, making it a reliable single spare for either system.
What electrical supply does it need?
A 110V AC shore power or inverter supply. At its 1200W load it draws about 10.9 amps, so protect the circuit with at least a 15-amp GFCI breaker to avoid tripped breakers or element damage.
How do I know the element has failed?
Water that warms slowly, never reaches temperature, or stays cold on shore power points to a bad element. A multimeter reading of infinite resistance across the terminals confirms an open (burned-out) element.
Can I replace it myself?
Yes — a mechanically capable sailor can drain the tank, isolate shore power, unthread the old element, and fit the new one with fresh thread tape or a gasket. Always confirm the 110V wiring is fully de-energized first.
How does the 110V version compare to the 220V?
The FVSLRSB12110A00 is 110V for North American power; Quick also makes 220V elements for European marinas. The two are not interchangeable — the wrong voltage risks immediate burnout or fire, so verify your onboard AC standard before ordering.