Skip to main content

Condensation

Condensation is a common phenomenon that typically occurs when cool outside air strikes a hot chimney pipe, cooling it and causing the water vapor to condense. Condensation happens as a result of the temperature difference and, in some instances, it may appear like a water leak, but in actual fact, it is only a temporary effect.  We recommend a geyser blanket to help retain the heat and help with condensation.

Maintenance

In colder climates, it may be a little more challenging to completely prevent condensation from taking place, but you can try to regulate the combustion air, by making sure the chimney pipe is free of debris or any potential obstruction, and by maintaining a small fire throughout the day. Proper care and maintenance of the unit is important. Removing ash from the firebox after use, and cleaning the chimney pipe every now and again, will prevent the build-up of debris, and it will ultimately prolong the life of the unit.

No leaking

Please note that every unit undergoes a thorough 'leak-and-pressure test' before leaving our premises.

 We are confident in saying that any water that is ‘leaking’ down the inside of the chimney after starting the fire, is likely caused by condensation, which will eventually clear on its own as long as you keep a small fire going.

However, if water is persistently and continuously running down the chimney for no apparent reason, please give us a call.

New headline

  • Our wood-burning water heaters are made from top-quality mild steel. Once the manufacturing process is complete, the unit is also galvanized (inside & out).


  • Galvanized mild steel is believed to be corrosion-resistant, but not corrosion-proof - especially in aggressive water environments or when exposed to chemicals (such as swimming pool chlorine), air and moisture cycles. As a result, we can give no guarantee whatsoever regarding the durability, or specific lifespan of our galvanized units, or any guarantees with regard to corrosion itself. Water that contains manganese and/or iron, may cause rust.


  • Under ideal conditions and with proper maintenance, our galvanized wood-fired water heaters can last several years. 


  • Our stand-alone wood-fired water heaters consist of three parts, namely a built-in firebox, a water tank/drum, and a chimney pipe.  Extended chimney pipes, chimney canopies, spark arrestors, foot pedestals, doors etc are sold separately. The cold water inlet will be connected to your gravity-fed system / municipal water supply. 


  •  The water tank comes standard with a cold water inlet nipple, and a hot water outlet nipple and every unit  is fully galvanized (inside & out) plus it is fitted with a 400 kPa TP valve.


  • Once the unit is fully installed, connected and ready for use, you can start by making a small fire on the bottom plate of the firebox, and gradually build it up to a medium-size fire, using dry firewood only! NEVER burn anything else than firewood! Open the cold water inlet to allow the tank to fill up. The water will heat up gradually, and once it has reached the required temperature, it can be used for bathing, cleaning and more.


  • To ensure your unit works correctly and efficiently, it is recommended that the stand-alone water heater be installed outdoors, and by a plumber.


  • Overheating your wood-fired water heater through over-stoking can lead to serious consequences. Over-stoking means adding too much wood in an attempt to make the fire burn hotter, faster or more intensely than necessary. To maintain a safe and efficient fire, it's important to use the appropriate amount of firewood.


 



Every unit sold comes with a booklet/installation guide

 

Why should I choose Bobaas Donkies?

  • In an age where sustainability and efficiency are paramount, Bobaas Donkies Wood-Fired Water Heaters stand out as a testament to innovative thinking grounded in time-honored traditions. Combining rustic charm with modern functionality, our wood-fired water heaters offer a compelling solution for all.


  • Bobaas Donkies, a name synonymous with quality and ingenuity, has simply revived the art of wood-fired heating. Long before electricity and gas became the standard for home heating, wood-fired systems (donkeys) were the heart of many households. By embracing this traditional method and infusing it with contemporary design and technology, we bring a reliable and sustainable heating solution into the 21st century.


  • If you’re looking for a budget-friendly heater that still offers excellent performance and corrosion protection, our mild steel (Fully Galvanized) range is the perfect fit. It’s ideal for inland areas, farm installations, or households with clean, low-chlorine water.
  • If you want the ultimate in durability and resistance - especially in coastal areas, salty or chlorinated water systems, or high-demand settings - our Stainless Steel (304) range is worth the investment. It delivers long-term peace of mind with minimal maintenance

HOW IT WORKS

Once the unit is fully installed and properly connected:

  1. Make a small fire on the bottom plate inside the firebox.
  2. Gradually build it up to a medium-sized fire using dry firewood only.
  3. NEVER burn anything other than dry firewood.
  4. Open the cold water inlet to allow the tank to fill.
  5. As the fire burns, the chimney pipe transfers heat into the water tank.
  6. The water heats up gradually and efficiently.
  7. Once the desired temperature is reached, the hot water can be used for:
    • Bathing
    • Cleaning
    • Outdoor tubs
    • Household use
    • And more


No electricity. No complicated systems. Just reliable, cost-effective hot water