Dual-coil kit for heating double tubs

Description

The Singema Dual‑Coil Kit is a wood‑fired hot tub heating system designed to heat two separate tubs using just one fire source. Built for off‑grid cabins, camping, and backyard gatherings, this dual‑coil setup delivers efficient, reliable warmth without extra stoves, fuel waste, or long wait times — making it the practical upgrade for group‑friendly outdoor soaking.

Parts included:

• 2 x Wood Fired Hot Tub Coil with 2 x U-bolt kits to be stacked together;
• 4 x Detachable Extended Tubes
• 4 x Fire-Resistance Silicone Hoses
• 8 x Stainless Steel Hose Clamps (with ergonomic handle)
• 4 x Stainless Steel Tub Fittings

Frequently Asked Questions (Dual-Coil Heating Guide)

Q1: How does the dual-coil kit enable heating two separate tubs with a single fire source?

A1: The Singema dual-coil kit utilizes two specialized wood-fired heating coils that are stacked together using high-strength U-bolts. By connecting each coil to a separate hot tub using our fire-resistant silicone hoses, you can circulate water through both systems independently while maintaining only one fire pit. This innovative design allows heat to be transferred to both tubs simultaneously through natural thermosiphon circulation. It is the perfect efficiency upgrade for off-grid cabins or group camping setups, ensuring that multiple users can enjoy warm water without the need for additional stoves or extra firewood consumption.

Q2: What are the installation requirements for the tubs to ensure the thermosiphon circulation works correctly?

A2: For the natural hot water circulation (thermosiphon) to function normally in a dual-tub configuration, the physical placement of the tubs is critical. While “Tub 1” can be at ground level, the bottom of “Tub 2” must be positioned approximately 25 to 30 centimeters higher than the bottom of “Tub 1.” This height difference creates the necessary pressure differential for the heated water to rise and circulate effectively through the second coil system. Without this elevation, the water flow may stall, resulting in uneven heating. Please consult our quick installation guide or FAQ for precise measurement patterns.

Q3: Does the dual-coil kit require any specialized tools for assembly or maintenance?

A3: One of the key benefits of the Singema Dual-Coil Heating Kit is its tool-free installation process. The kit includes ergonomic stainless steel hose clamps that can be tightened by hand, ensuring a secure and leak-free connection between the coils, hoses, and tub fittings. Maintenance is equally straightforward, as the high-purity stainless steel construction is rust-resistant and designed to withstand harsh outdoor conditions with minimal cleaning. Simply rinse the coils after use to prevent ash buildup. This durable and low-maintenance design makes it an ideal choice for remote wilderness campsites where professional tools are unavailable.

Q4: Can this heating system be used with non-wooden tubs, such as stock tanks or plastic barrels?

A4: Yes, the dual-coil kit is highly versatile and compatible with various tub materials, including metal stock tanks, plastic barrels, and ceramic containers. The stainless steel tub fittings provided in the kit are adjustable and can accommodate wall thicknesses ranging from 1mm up to 50mm. You will simply need to drill two 25mm holes in each tub to mount the fittings. This flexibility allows DIY enthusiasts to convert almost any large container into a wood-fired hot tub. Whether you are at a backyard gathering or an off-grid hunting lodge, this system adapts to your unique soaking needs.

Q5: Is it possible to heat just one tub if the second tub is not in use?

A5: While the kit is optimized for dual-tub operation, you can technically operate a single tub by only connecting and firing one of the coils. however, the dual-coil setup is specifically designed to maximize the heat output from a single fire source for two systems. If you frequently anticipate only needing one tub, we recommend our standard single-coil kits. For the dual-coil system, ensure that any connected hoses are filled with water before lighting the fire to prevent damage to the silicone components. This setup is a game-changer for rental properties or campsites hosting larger groups of guests.

Q6: How does this kit improve fuel efficiency compared to using two separate wood stoves?

A6: The dual-coil heating kit is engineered to eliminate fuel waste by capturing the maximum thermal energy from a single combustion point. Instead of maintaining two separate fires, which doubles your firewood consumption and labor, you only need to manage one central fire source. This concentrated heat effectively warms both coils simultaneously, reaching your ideal soaking temperature in roughly the same time as a single tub setup. This efficiency is vital for off-grid living or long-term camping trips where firewood resources may be limited or expensive. Save precious time and money while doubling your group’s relaxation capacity.