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ProTech 300 Boiler Water Treatment
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PRODUCT TYPE: Wood Furnace Parts & Accessories

MANUFACTURER: AH&S

ProTech300 is a new and improved wood boiler water treatment that goes beyond standard solutions to safeguard your boiler from rust, corrosion, and scale. By combining three powerful active ingredients—nitrite, phosphonate, and an anodic inhibitor—ProTech300 delivers unmatched performance and peace...

$44.99
High Temperature Silicone 10 Oz
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PRODUCT TYPE: Wood Furnace Parts & Accessories

MANUFACTURER: AH&S

Product DescriptionSILA-SEAL Professional Grade Silicone Sealants are non-slumping, one-part 100% silicone rubber acetoxy sealants that cure to a tough, rubbery solid upon exposure to moisture in the air (RTV-room temperature vulcanizing) with long-term flexibility and durability. All SILA-SEAL Professional Grade...

$12.99$9.99
AmTech300 Wood Boiler Treatment Corrosion Inhibitor - 1 gallon
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PRODUCT TYPE: Wood Furnace Parts & Accessories

MANUFACTURER: AH&S

Looking for a reliable, budget-friendly solution to protect your wood boiler? AmTech300 delivers two layers of powerful protection—nitrite and phosphonate-based chemistry—offering the same results as top-tier brand-name treatments without the premium price tag. Designed to prevent rust, corrosion, and scale,...

$34.99
MolyArmor 350 Corrosion Inhibitor for Wood Boiler
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PRODUCT TYPE: Wood Furnace Parts & Accessories

MANUFACTURER: WoodMaster

Product DescriptionMolyArmor 350 Corrosion Inhibitor provides excellent corrosionprotection when properly maintained and the moly level neverdrops below 350 ppm. It is easy to test for maintenance levelswith a test strip (no messy chemicals for testing). One gallon ofMolyArmor 350 Corrosion...

$59.99$49.99
300 Test Kit
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PRODUCT TYPE: Wood Furnace Parts & Accessories

MANUFACTURER: AH&S

Product Description Test Nitrite levels easily and accurately just like the lab! This test kit is designed to test the Nitrite levels in your boiler fill water. It is an easy and accurate means to determine the level or amount...

$22.00$19.95
CF205 System Cleaner & Flush For Outdoor Wood Boilers
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PRODUCT TYPE: Wood Furnace Parts & Accessories

MANUFACTURER: AH&S

Product Description CF205 System Cleaner has been specifically designed for safely cleaning outdoor & indoor wood boilers with mild steel and/or stainless steel construction. CF205 will safely remove deposits within the system that compromise boiler efficiency and promote corrosion. CF205...

$27.95
AmTech300 2 Pack Boiler Treatment Rust Inhibitor for Outdoor Wood Boilers
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PRODUCT TYPE: Wood Furnace Parts & Accessories

MANUFACTURER: AH&S

AmTech 300 Wood Boiler Water Treatment is an inexpensive alternative to brand-name boiler treatment chemicals at half the cost. Our AmTech 300 Boiler Treatment will: It offers 2 Levels of Protection. Protect your wood boiler from rust, corrosion, and scale...

$65.99
Yearly Maintenance Kit 9 Feet of 1" Fire Rope with Protech300
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PRODUCT TYPE: Wood Furnace Parts & Accessories

MANUFACTURER: Alternative Heating & Supplies

Product Description This Kit is all you need to keep your Wood Boiler running like the day you bought it!  Typical Applications Water boilers Features 1x10 oz. tube of Black RTV Silicone 1 Gallon of Protech 300 Boiler treatment that...

$72.89
Woodmaster 4400 Maintenance Kit with Amtech300 - MKit4400-Am.
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PRODUCT TYPE: Wood Furnace Parts & Accessories

MANUFACTURER: Alternative Heating & Supplies

Maintenance Kit - 4400 Includes Fire Rope for 4400, one FC546, RTV Silicone and One Gallon Amtech 300 The WoodMaster 4400 Yearly Maintenance Kit has everything you will Need to Tune Up your WoodMaster! The Yearly Maintenance Kit Includes: Fire...

$79.89
ProTech300 Outdoor Wood Boiler Water Treatment - 4 Pack
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PRODUCT TYPE: Wood Furnace Parts & Accessories

MANUFACTURER: Alternative Heating & Supplies

Product Description ProTech300 Boiler Treatment - Has been designed to be used in boiler treatment programs at a lower cost, yet exceeding all other brands on the market with having three levels of protection.  Adding 1 gallon of ProTech300 to...

$159.80
Woodmaster 4400 Maintenance Kit with Protech300
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PRODUCT TYPE: Wood Furnace Parts & Accessories

MANUFACTURER: Alternative Heating & Supplies

Maintenance Kit - 4400 Includes Fire Rope for 4400, 1- Fan Cover FC546, 1- Tube of RTV Silicone and One Gallon Protech 300 The WoodMaster 4400 Yearly Maintenance Kit has everything you will Need to Tune Up your WoodMaster! The Yearly...

$89.89
Protech300 Yearly Maintenance Kit: 2 ProTech300 and 1 Test Kit
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PRODUCT TYPE: Wood Furnace Parts & Accessories

MANUFACTURER: Alternative Heating & Supplies

Product Description ProTech 300 Boiler Treatment - Has been designed to be used in boiler treatment programs at a lower cost, yet exceeding all other brands on the market with having three levels of protection.  Adding 1 gallon of ProTech...

$109.93
Woodmaster 5500 Maintenance Kit with Protech300
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PRODUCT TYPE: Wood Furnace Parts & Accessories

MANUFACTURER: Alternative Heating & Supplies

Maintenance Kit - 5500 Includes Fire Rope for 5500, 2- Fan Covers FC546, 1- Tube of RTV Silicone and One Gallon Protech 300 The WoodMaster 5500 Yearly Maintenance Kit has everything you will Need to Tune Up your WoodMaster! The...

$110.87
Fan Cover Model 328 for Fan 4C012
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PRODUCT TYPE: Wood Furnace Parts & Accessories

MANUFACTURER: AH&S

Product DescriptionFC328 Fan Cover for fan Model 4C012 or equivalent is a simple device that works effectively on keeping the air out and saves wood and reduces smoke. This is a rubber fan cover that covers most Dayton Fans to...

$29.99$19.99
Protech300 Yearly Maintenance Kit: 1 ProTech300 and 1 Test Kit
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PRODUCT TYPE: Wood Furnace Parts & Accessories

MANUFACTURER: Alternative Heating & Supplies

ProTech 300 Boiler Treatment - Has been designed to be used in boiler treatment programs at a lower cost, yet exceeding all other brands on the market with having three levels of protection. Adding 1 gallon of ProTech 300 to...

$64.94
Purple Power Cleaner 32 Oz
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PRODUCT TYPE: Wood Furnace Parts & Accessories

MANUFACTURER: Purple Power

Product DescriptionPurple Power Industrial Strength Degreaser works on a wide variety of surfaces in auto, farm, marine, home and industrial applications. Concentrated formula penetrates quickly and creates a barrier between the stain and the surface being cleaned. Certified biodegradable. Non-abrasive,...

$9.99$4.99
Flue Cleaning Brush
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PRODUCT TYPE: Wood Furnace Parts & Accessories

MANUFACTURER: AH&S

Product DescriptionProtect your wood boiler from rust, corrosion and scale with Empyre Elite & Pro Series Flue Cleaning Brush. Typical ApplicationsThis tool works on the Empyre Elite 100 & 200 indoor and outdoor models & Pro Series 200 & 400...

$15.99
MolyArmor 350 pH Test Kit
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PRODUCT TYPE: Wood Furnace Parts & Accessories

MANUFACTURER: WoodMaster

Product Description MolyArmor 350 PH Test Kit. Test your PH levels easily and accurately! This test kit is designed to test the PH levels in your boiler fill water. This test kit works only with MolyArmor 350 Corrosion Inhibitor This...

$28.95
Amtech300 Yearly Maintenance Kit: 1  AmTech300 and 1 Test Kit
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PRODUCT TYPE: Wood Furnace Parts & Accessories

MANUFACTURER: Alternative Heating & Supplies

Product Description AmTech 300 Boiler Treatment - Has been designed to be used in boiler treatment programs at a lower cost. These programs insist the boiler owner meet certain nitrite levels in order to comply with warranty requirements in regards...

$54.94
Yearly Maintenance Kit 8 Feet of 1" Fire Rope with Protech300
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PRODUCT TYPE: Wood Furnace Parts & Accessories

MANUFACTURER: Alternative Heating & Supplies

Product Description This Kit is all you need to keep your Wood Boiler running like the day you bought it!  Typical Applications Water boilers Features 1x10 oz. tube of Black RTV Silicone 1 Gallon of Protech 300 Boiler treatment that...

$70.90
Woodmaster 5500 Maintenance Kit with Amtech300
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PRODUCT TYPE: Wood Furnace Parts & Accessories

MANUFACTURER: Alternative Heating & Supplies

Maintenance Kit - 5500 Includes Fire Rope for 5500, two Fan Covers FC546, One Tube of RTV Silicone and One Gallon Amtech 300 The WoodMaster 5500 Yearly Maintenance Kit has everything you will Need to Tune Up your WoodMaster. The Yearly...

$100.87
Amtech300 Yearly Maintenance Kit: 2 AmTech 300 and 1 Test Kit
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PRODUCT TYPE: Wood Furnace Parts & Accessories

MANUFACTURER: Alternative Heating & Supplies

Product Description AmTech 300 Boiler Treatment - Has been designed to be used in boiler treatment programs at a lower cost. These programs insist the boiler owner meet certain nitrite levels in order to comply with warranty requirements in regards...

$89.93
Yearly Maintenance Kit 7 Feet of 1" Fire Rope with Protech300
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PRODUCT TYPE: Wood Furnace Parts & Accessories

MANUFACTURER: Alternative Heating & Supplies

Product Description This Kit is all you need to keep your Wood Boiler running like the day you bought it!  Typical Applications Water boilers Features 1x10 oz. tube of Black RTV Silicone 1 Gallon of Protech 300 Boiler treatment that...

$68.91
Woodmaster 3300 Maintenance Kit with Protech300
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PRODUCT TYPE: Wood Furnace Parts & Accessories

MANUFACTURER: Alternative Heating & Supplies

Maintenance Kit - 3300 Includes Fire Rope for 3300, one FC546, RTV Silicone and One Gallon Protech 300 The WoodMaster 3300 Yearly Maintenance Kit has everything you will Need to Tune Up your WoodMaster! The Yearly Maintenance Kit Includes: Fire...

$87.90

Keeping your wood boiler or wood-burning furnace in peak condition starts with the right maintenance treatments. At Alternative Heating & Supply, we carry trusted products designed to protect your system from corrosion, rust, scale buildup, and other damage caused by untreated water and normal wear and tear.

Types of Maintenance Treatments Available

Maintenance Treatments & Corrosion Inhibitors

Water treatment is one of the most important steps in protecting your wood boiler or outdoor furnace. Our boiler treatment products are designed to:

  • Prevent internal rust and corrosion
  • Inhibit scale buildup
  • Balance pH and nitrite levels to extend component life

We carry multi-ingredient formulas like ProTech 300 and AmTech 300, trusted for treating both steel and stainless steel systems. These treatments help maintain clean water chemistry, improve system efficiency, and reduce long-term wear.

Cleaners and Flushes

Before adding treatment, it's essential to flush out old buildup, sediment, and sludge. Our flush cleaners are specially formulated to clean internal surfaces safely and effectively. Using a cleaner like CF205 before applying your seasonal treatment ensures maximum absorption and long-lasting protection.

Yearly Maintenance Kits

Take the guesswork out of annual maintenance with our Yearly Maintenance Kits. These all-in-one bundles may include:

  • Boiler Treatment
  • Silicone
  • Fire Rope
  • Fan Covers and other essentials

Perfect for seasonal checkups, these kits help you save time and keep everything running efficiently.

Test Kits

Maintaining proper water chemistry is critical. Our Test Kits give you the tools to:

  • Check pH and nitrite levels
  • Ensure proper treatment dosing
  • Confirm your system is operating safely

Stay in control with accurate readings and peace of mind all heating season long.

Why Is Treatment Important?

Maintaining your wood boiler is a smart way to protect your investment.

  • Improved Efficiency: Proper water chemistry prevents internal fouling, letting your system run smoother and use less fuel.
  • Reduced Repairs: Scale and rust are leading causes of costly breakdowns. Preventing them saves time and money.
  • Extended Lifespan: Regular maintenance helps your boiler or furnace last longer, delivering years of reliable heating.

Whether you're heating your home, shop, or outbuilding, routine maintenance treatment is essential.

Shop Wood Boiler and Wood Furnace Maintenance Treatments

At Alternative Heating & Supply, we stock only the most trusted treatment products, tested by our own technicians and used by professionals across the country. Whether you’re running a WoodMaster or custom outdoor wood boiler, we have everything you need to treat, test, flush, and protect your unit.

Shop boiler protection supplies now and keep your system running strong.

FAQs

What is a boiler treatment and why do I need one?

A boiler treatment is a chemical solution added to your boiler water to prevent corrosion, scale buildup, and pH imbalance. It keeps internal components from rusting or clogging, which improves efficiency and prevents breakdowns.

How often should I add maintenance treatments to my wood boiler or furnace?

Most treatments are designed to last 1 to 2 heating seasons, but you should test your water at least once per season to ensure treatment levels are still effective. Additionally, we recommend adding treatment once a season.

Can I use the same treatment in any wood boiler or furnace?

Usually, treatments are pretty universal and can be used across pretty much every outdoor boiler unit. However, some have warranties where the company forces you to use their product.