* Email
Hot Tub Banner Hot Tub Logo Hot Tub Pumps Hot Tub Heaters Hot Tub Chemicals Hot Tub Covers Spa Plumbing Balboa Spa Parts Hot Tub Accessories Hot Tub Home Hot Tub Special Hot Tub Products Hot Tub Articles Hot Tub Testimonials Contact Hot Tub Hot Tub Faqs Hot Tub Blog

Wood Fired Hot Tub Heater - Aluminum 70,000 BTU


Add to Cart:

Ask a question






Item Description


Wood Fired Hot Tub Heater

TimberLine BonFire


Aluminum Hot Tub Wood Fired Heater
Heat your hot tub with wood! No noise, no electric bills!

Aluminum wood pool heater

Internal view

TimberLine Wood Water Stoves are an alternate way to heat a hot tub or spa! This 100% Aluminum Water Stover produce about 70,000 BTU (20Kw) of heating capacity by only using wood. You can now heat a medium-large hot tub in hours!  These are ideal for off grid applications or to supplement spa heating costs. 

The TimberLine Wood Water Stove naturally circulates the water using no electricity. Its design is based on Thermosiphon; the hot water rises and exits via the top port. At the same time cold water is drawn in to the heat exchanger via the bottom port.


Thermosiphon System -Standard

  Chofu Heater


Both the stove body of the Water Heater and the firebox are made with high quality aluminum, making this wood burning hot tub heater easy to move. The heater can be left outside without the danger of rusting or burning-out. A specially designed vented smoke outlet provides secondary combustion of unburned gases, thereby reducing smoke emissions and chimney sparks. The heater comes with 10' of stainless steel stove pipe and inclues a top rain rap as well as an adjustable flue damper for fine control.

The Wood Water Heater utilizes a sophisticated heat exchange design for efficient water heating. The Aluminum stove body surrounding the firebox is a double-walled water-jacket with a 1.5-inch space between, making the entire firebox (except the front) a heat-transferring surface. Additional heat transfer takes place in a water-filled flat baffle tubes that runs horizontally through the firebox. The baffle deflects the path of the fire, so it gives up more heat into the water jacket before going up the chimney.

Heat is easily controlled by adjusting the air draft control for heating the water and maintaining the water temperature.

The dimensions of the TimberLine BonFire Stoves are 18" wide x 29 " long x19" high with at total weight of 66 lbs. The fire box can accommodates 28" logs. The BonFire Water Stove comes with a 3/4" drain plug to completely drain the internal water jacket preventing any damage that could be caused by freezing.  Also include are a temperature gauge to regulate the hot water and a safety pressure valve.

The heating time varies by the amount of water capacity of the tub and the starting temperature of the tub. Generally the TimberLine BonFire Hot Tub Heater will raise 100 gallons by about 65 degrees F per hour. The unit comes complete with everything you will need including the through ports. Included is a 2 year warranty against Manufacture defects. The TiberLine Wood Water Stove is perfect for cabins or anyone who wants to enjoy a hot tub without any pump noises. Great for the do-it-yourself who wants to build their own hot tub.




inside view        drain


What is included:

  • Stainless Steel  TimberLine - BonFire Water Heater approx 70,000 BTU
  • brass garden hose drain faucet
  • cast iron log grates
  • 3 x 3 /13'' of 5" stainless steel chimney with rain cap
  • Thermosiphon connection kit 

Thermosiphon Connection Kit

Thermosiphon connection kit - Included


Please call us any time for more information 1 800 759 8990!


Payment Details

We accept PayPal and Credit card (Visa or Mastercard).  If you are ordering multiple units and part, please call us to see if we can save you shipping cost for multiple item orders.


 No taxes to US residence!


Shiping and Handling

Please allow 4-6 days for shipping via UPS Ground to USA or Canada.  You will be emailed a tracking number to the email address you provide us.  Expedited Shipping services are available!

Your #1 Hot Tub Parts Replacement Store!



I hate to ask, but really you need a bullet field for EACH bullet item if you want to support more than one bullet.  So, products_amazon_bullet_1, products_amazon_bullet_2, products_amazon_bullet_3, ... products_amazon_bullet_5.  The current one can work for a single bullet however.

Add to Cart:

  • Model: C-628
  • Shipping Weight: 300lbs
  • 2 Units in Stock
  • Manufactured by: TimberLine