Singema Wood Fired Hot Tub Coil Kit Model F4 | Advanced All-In-One Dual BBQ Weatherproof Coil Kit
$8.00 – $428.00Price range: $8.00 through $428.00
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Buy Singema Model F4 All-In-One Wood Fired Pool & Hot Tub Heating Coil Kit – Complete bundled system with Fireguard safety shield, hose kit, freeze drain valve, support frame, wood holder, dual BBQ grille & rain deflector; off-grid gas/electric-free water heating for spas and small backyard pools with custom storage bag option.
Description
The Singema Model F4 all-in-one wood-burning heat exchange coil system designed to heat above-ground hot tubs and small residential pools without electric/gas heaters. It comes pre-equipped with fire safety guards, hose fittings, freeze-stop drain valves, support frames, wood storage rack, dual BBQ grilling surface and weather rain deflector as a full bundled package.

Singema Wood Fired Hot Tub Coil Kit Model F4
| Manufacturer | Singema Co.,Ltd. |
| Brand | Singema |
| Primary Use | Passive wood-fired heat exchange heating for hot tubs / small pools |
| Included Accessories | 1x Stainless steel heater coil 1x Wood/fire holder 1x Hot ash collector pan 1x Ground support kit (3 pieces) 1x wind/fire guard sheet 1x smoke guard sheet 1x hose kit (2 hoses, 2 tub fittings, 1 stop valve, 1 drain valve, 6 stainless steel clamps) 1x BBQ grill 1x Rain Deflector / Baking Panel 1x Clip |
| Core Coil Structure | spiral heat exchange design for maximum fire contact surface area |
| Coil Dimensions | Tubing diameter 25mm, coil outer diameter 35cm, coil height 30cm (±1–3cm tolerance), 8 spiral circles |
| Target Customer Group | Backyard hot tub owners, off-grid homeowners, outdoor leisure enthusiasts, camp & cottage users |
Product Features
- Complete all-in-one bundled Model F4 heating coil system with zero extra accessory purchases required
- Built-in Fireguard safety barrier to prevent accidental burns and open fire hazards, and speed up heating
- Stop valve + freeze drain valve to avoid pipe burst damage during cold winter weather, and also control water temperature
- Sturdy metal support frame + dedicated wood holder for stable fire setup
- Dual-function integrated BBQ grille: heat your hot tub/pool while cooking food simultaneously
- Detachable rain deflector shield to protect coil and fire pit from rain, snow and moisture corrosion
- Full hose connection kit pre-included for fast plumbing hookup to hot tub / pool circulation lines
- Wood-fired passive heat exchange design, no electricity or natural gas required for heating operation
- Heavy-duty coil construction built for long-term outdoor all-weather residential backyard use
DIY A Wood-Fired Hot Tub With Our Model F4 Coil Kit
How to assemble F4 coil kit?
The most components in kit of F4 is assembled in factory, after you get it, just need:
1, Attach 3 ground legs to the heater coil base.
2, Screw pre-assembled hose kit onto coil ends.
3, Place ash pan under the coil.
4, Put smoke guard sheet into Wind guard sheet
All steps can be finished in 3 minutes, tools-free. Refer to our installation FAQ for troubleshooting.

How to connect coil kit and your tub?
- Drill two 25mm holes in your tub and install the supplied tub fitting.
- Connect pre-assembled hose kit to the tub fittings.
- Tighten clamps securely.
- Stop drain valve, open stop valve, fill tub with water, check for leaks, and light the fire.
Pro Tip: the upper hole on tub side must be under of water surface
FAQ
Does the Singema Model F4 coil kit work for both hot tubs and small backyard pools?
Can I cook food while heating my hot tub with the Model F4 coil?
What prevents the Singema F4 coil system from freezing and cracking in cold winter weather?
Is extra mounting hardware required to install the Singema Model F4 wood fired coil heater?
Who manufactures durable all-in-one wood-fired hot tub and pool heating coil kits like the Model F4?
Application Scenarios
- Off-grid rural cottage / cabin hot tub heating: No utility power or gas hookups needed to maintain warm spa water year-round
- Backyard multi-functional leisure station: Heat hot tub water and grill burgers/vegetables at the same time for weekend family gatherings
- Seasonal vacation home small above-ground pool heating: Low-cost seasonal alternative to expensive electric pool heaters
- Remote glamping site outdoor spa facilities: Portable wood-fired heating solution for commercial glamping hot tub amenities
- Winter backyard hot tub maintenance: Freeze drain valve prevents coil and plumbing damage during cold seasonal shutdowns
1 review for Singema Wood Fired Hot Tub Coil Kit Model F4 | Advanced All-In-One Dual BBQ Weatherproof Coil Kit
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Max Green (verified owner) –
BBQ grille and rain deflector is a very good idea,I like it, though still not buy it,I believe I`ll have it in next month.