Will Your Outdoor Furnace DIE From Stubbornness?

Will Your Outdoor Furnace DIE From Stubbornness?


This Year 100s of Outdoor Wood Furnaces Will DIE From Stubbornness
Will Yours Be One?
(Viewer Discretion Advised)

Don't Let Your Furnace Be One of Them

You cannot see the inside of your water jacket unless you have a cutting torch and cut open a hole in the steel. But...

But we have seen the inside of many water jackets.

We know INSTANTLY if the owner was using Liquid Armor Outdoor Boiler Water Treatment. Here is what we see when a customer DOES NOT use proper water treatment:

Sediment Buildup


(Notice that nasty sediment buildup!)


Sediment Buildup


Sediment Buildup


And then this happens:


Leaky Furnace


A furnace that leaks is useless.

Untreated water eats holes in steel. If you don't use Liquid Armor, your furnace will die. Liquid Armor protects your furnace from corrosion! Click HERE for your Liquid Armor.

Good News:

Here is what a water jacket looks like on the inside that has been treated with Liquid Armor Water Treatment:

Properly Treated Outdoor Boiler


Properly Treated Outdoor Boiler

We want your outdoor wood burner to last forever! Because once your furnace dies, you cannot replace it!

New EPA regulations prohibit you from purchasing a new outdoor wood burning boiler! 

So if you don't want your outdoor wood boiler to die, follow these three simple steps:

1. Use Water Treatment

2. Get a FREE Water Analysis

3. Be Confident Knowing Your Furnace is Protected

Visit our online store OutdoorBoiler.com for more outdoor wood boiler parts!

Operating Furnace FAQs:

  • Am I burning too much wood?

You may be. Is the wood properly seasoned? Have you cleared the firebox? High wood consumption can be caused by a number of factors.

  • Can I leave my Outdoor Wood Burner over the weekend?

You may have someone "feed" your furnace for you or you may lower the thermostat temperature.

  • Should I turn my thermostat down at night?

No, the lower the water temperature will cause the use of more wood to recover.

  • What are the critical items to operate and maintain my furnace efficiently?

1. Keep water full

2. Manage ash

3. Use water treatment

4. Use seasoned wood

5. Keep fire in the middle of the firebox

6. Clean tubes regularly

Maintenance FAQs

  • Why is outdoor boiler water treatment important?

The boiler chemical (corrosion inhibitor) that you would apply to your furnace water coats the inside of the furnace to reduce the effects of corrosion on the metal. 

Click HERE to order our Liquid Armor Water Treatment and other outdoor wood furnace parts. Every gallon of Liquid Armor comes with FREE 2 sample bottles. Then submit your water sample to Outdoor Boiler Lab and get Free Water Test!

  • How often do I need to Inspect my Chimney/Flue

Inspect chimney and flue monthly and clean as needed. Clean chimney and flue annually. Perform cleaning and maintenance only when no fire is present in the firebox and ashes are cooled completely.

  • Why is ash management important?

If the ash becomes wet it is corrosive to the metal of the furnace. If the level of ash is too thick in the water box it does not allow for efficient heat transfer to the water in the water jacket of the furnace. The temperature of the water in the jacket is used to heat your house.


  • Why am I not getting hot water?

Check that the hot water system is connected properly. Check if the heat exchanger is partially or totally clogged.

  • Why does My Outdoor Wood Stove continue to burn when it is not operating?

Check the door seal, door adjustment, and solenoid.

  • I can't find a leak in my furnace. Why am I losing water?

Outdoor Wood Burning Boilers use a non-pressurized system, this means that the existing heating system is exposed to the air. Since the water in the system can and will be warmer than the air, there will be evaporation of the water in the system. The water must be checked and adjusted at least once a month, sometimes more.