Quick B3 Nautic Boiler: Reliable Marine Hot Water System
The Quick B3 Nautic Boiler is a compact marine hot-water heater designed to deliver dependable, trouble-free hot water on board. Built with corrosion resistance and efficient insulation in mind, the B3 is intended for boatowners who need a durable, space-conscious solution for their onboard hot-water needs. With five model sizes, multiple heating-element options and a robust set of safety and performance features, the B3 is a practical choice for a wide range of vessels.
Durable Construction and Materials
At the core of the B3 Nautic Boiler is a corrosion-resistant tank constructed from 1.5‑millimeter 316 stainless steel and welded using Argon shielding gas. That combination of material and welding technique improves resistance to saltwater environments, reducing the risk of premature corrosion and helping ensure a longer service life compared with lesser-grade tanks.
The tank is protected by a composite outer casing and insulated with high-density polyurethane foam between the cover and the tank. This insulation reduces standby heat loss, improves heating efficiency and keeps the unit compact while maintaining stored hot water at usable temperatures for longer periods.
Performance and Controls
The B3 is fitted with a high-capacity heat exchanger that supports effective heat transfer, making it suitable for both electric-only installations and systems where a heat exchanger is used in conjunction with the boat’s engine or other heat sources. An adjustable safety thermostat gives installers and owners control over maximum water temperature and provides an extra layer of protection against overheating.
For convenience and winterizing, the unit includes a relief that can be used to drain the tank when the system is not in use. This feature helps prevent freeze damage during storage and simplifies maintenance tasks when preparing the boat for off-season periods.
Model Range and Electrical Options
The B3 Nautic Boiler is available in five models with storage capacities ranging from 3.9 to 10.5 gallons, allowing owners to choose a size that matches available space and hot-water demand. Electric heating-element options include 500, 600 and 1,200 watts, giving flexibility for installations with limited electrical capacity as well as those that can support faster recovery rates.
- Capacity range: 3.9 to 10.5 gallons
- Heating elements: 500 W, 600 W, 1,200 W
- Tank material: 1.5 mm 316 stainless steel, Argon-welded
- Insulation: high-density polyurethane foam
- Outer protection: composite casing
- Safety: adjustable thermostat and drain relief
Installation and Use
The B3’s compact footprint and multiple capacity options make it suitable for installation in tight spaces common on many boats. When planning installation, consider the following practical points:
- Locate the unit where pipe runs to fixtures are short to minimize heat loss and improve delivery time for hot water.
- Ensure proper electrical capacity for the chosen heating element and confirm compatibility with onboard power systems and circuit protection.
- Plumb and configure the relief/drain so the tank can be emptied easily for winterizing or maintenance.
- Follow local marine electrical and plumbing codes and, when in doubt, consult a qualified marine technician for installation and commissioning.
Maintenance and Longevity
Routine attention to the B3 Nautic Boiler will help maintain performance and extend service life. Regularly check electrical connections, the thermostat setting and the relief/drain valve operation. Inspect for signs of external corrosion damage or mechanical wear to brackets and plumbing connections. Flushing the tank periodically can prevent sediment buildup in regions with hard water, and draining the tank before prolonged layup prevents freeze-related damage.
Pricing and Availability
Retail pricing for the B3 Nautic Boiler starts at $423, with final cost depending on model capacity and chosen heating-element option. For product information, availability and dealer support in the United States, contact Quick U.S.A. from Glen Burnie, Maryland. Phone: (410) 768-5991. Website: www.quickusa.com

