Fernox Parts

Fernox universal water analysis test kit. This kit provides rapid on-site analysis of central heating system water, tests for major parameters affecting water quality, and has simple color charts for measuring concentrations. Explore More

The Fernox Boiler Noise Silencer F2 is designed to minimize boiler noise and kettling, often indicating a scaled system. It is compatible with all types of boilers and works effectively with metals and materials commonly used in systems, including aluminum. Explore More

The Fernox Protector F1 is a high-performance, market-leading inhibitor that prevents corrosion and limescale in central heating systems. It combines three types of inhibitors—organic, anodic, and cathodic—to protect metal surfaces, prevent debris buildup, and create a durable protective layer. It also features pH buffering to maintain an optimal pH range of 6.5–8.5, ensuring long-term system efficiency. Compatible with all Fernox products and materials, including aluminum, it should be checked annually for regular system maintenance. Explore More

The Fernox Protector F1 is a high-performance, market-leading inhibitor that prevents corrosion and limescale in central heating systems. It combines three types of inhibitors—organic, anodic, and cathodic—to protect metal surfaces, prevent debris buildup, and create a durable protective layer. It also features pH buffering to maintain an optimal pH range of 6.5–8.5, ensuring long-term system efficiency. Compatible with all Fernox products and materials, including aluminum, it should be checked annually for regular system maintenance. The 2.6 gallons treats 500 gallons of water. Explore More

The Fernox Leak Sealer F4 is an internal sealant designed for central heating systems, effectively sealing small leaks and weeps that cause pressure loss or boiler issues. It works within 1–24 hours, forming a polymer to seal pinholes without requiring a full system drain, preventing blockages in boilers and components. The 1 Pint treats 34 gallons of water. Explore More

The Fernox Protector+ Filter Fluid F9 Express, designed for use with Fernox TF1 or similar filters, enhances filter performance, protects against corrosion and scale, extends system life, maintains efficiency, and is environmentally friendly. It uses non-flammable Barrier Pressure Pack technology, ensuring no air enters the system, which prevents future corrosion risks. Concentration levels should be checked annually. Explore More

The Fernox Cleaner F3 is a universal, pH-neutral, non-foaming liquid cleaner that removes sludge, scale, and debris to restore heating efficiency, eliminate boiler noise, and is ideal for commissioning new systems and powerflushing, while being non-hazardous and compatible with common heating system metals, including aluminum. The 13oz treats 34 gallons of water. Explore More

The Fernox Leak Sealer F4 is an internal sealant designed for central heating systems, effectively sealing small leaks and weeps that cause pressure loss or boiler issues. It works within 1–24 hours, forming a polymer to seal pinholes without requiring a full system drain, preventing blockages in boilers and components. The 13oz treats 34 gallons of water. Explore More

The Fernox Cleaner F3 is a universal, pH-neutral, non-foaming liquid cleaner that removes sludge, scale, and debris to restore heating efficiency, eliminate boiler noise, and is ideal for commissioning new systems and powerflushing, while being non-hazardous and compatible with common heating system metals, including aluminum. The 1 Pint treats 34 gallons of water. Explore More

The Fernox Protector F1 is a high-performance, market-leading inhibitor that prevents corrosion and limescale in central heating systems. It combines three types of inhibitors—organic, anodic, and cathodic—to protect metal surfaces, prevent debris buildup, and create a durable protective layer. It also features pH buffering to maintain an optimal pH range of 6.5–8.5, ensuring long-term system efficiency. Compatible with all Fernox products and materials, including aluminum, it should be checked annually for regular system maintenance. The 13oz treats 34 gallons of water. Explore More

The Fernox Cleaner F3 is a universal, pH-neutral, non-foaming liquid cleaner that removes sludge, scale, and debris to restore heating efficiency, eliminate boiler noise, and is ideal for commissioning new systems and powerflushing, while being non-hazardous and compatible with common heating system metals, including aluminum. The 2.6 gallons treats 500 gallons of water. Explore More

The Fernox Hydronic Descaling Kit includes a DS40 Descaler and Cleaner, a 110V submersible pump with two 4ft hoses (3/4" NPT fitting), and is designed to efficiently remove limescale, rust, and corrosion from tankless water heaters. It restores energy efficiency, is safe for all metals (including aluminum), and features an easy-to-use organic acid powder that changes color from pink to yellow during descaling. Explore More

The Fernox Boiler Noise Silencer F2 is designed to minimize boiler noise and kettling, often indicating a scaled system. It is compatible with all types of boilers and works effectively with metals and materials commonly used in systems, including aluminum. The 13oz treats 34 gallons of water. Explore More

The Fernox Alphi-11 Antifreeze Protector is a combined glycol-based antifreeze and inhibitor that provides long-term protection against frost, internal corrosion, and limescale in heating and chilled water systems, including geothermal systems. To ensure effective corrosion protection, a minimum in-use concentration of 25% is recommended, which offers frost protection down to 12.2°F (-11°C). A 50% concentration provides protection down to -29.2°F (-34°C). Explore More

The Fernox Alphi-11 Antifreeze Protector is a combined glycol-based antifreeze and inhibitor that provides long-term protection against frost, internal corrosion, and limescale in heating and chilled water systems, including geothermal systems. To ensure effective corrosion protection, a minimum in-use concentration of 25% is recommended, which offers frost protection down to 12.2°F (-11°C). A 50% concentration provides protection down to -29.2°F (-34°C). Explore More

The Fernox Alphi-11 Antifreeze Protector is a combined glycol-based antifreeze and inhibitor that provides long-term protection against frost, internal corrosion, and limescale in heating and chilled water systems, including geothermal systems. To ensure effective corrosion protection, a minimum in-use concentration of 25% is recommended, which offers frost protection down to 12.2°F (-11°C). A 50% concentration provides protection down to -29.2°F (-34°C). Explore More

The Fernox Alphi-11 Antifreeze Protector is a combined glycol-based antifreeze and inhibitor that provides long-term protection against frost, internal corrosion, and limescale in heating and chilled water systems, including geothermal systems. To ensure effective corrosion protection, a minimum in-use concentration of 25% is recommended, which offers frost protection down to 12.2°F (-11°C). A 50% concentration provides protection down to -29.2°F (-34°C). Explore More

The Fernox Alphi-11 Antifreeze Protector is a combined glycol-based antifreeze and inhibitor that provides long-term protection against frost, internal corrosion, and limescale in heating and chilled water systems, including geothermal systems. To ensure effective corrosion protection, a minimum in-use concentration of 25% is recommended, which offers frost protection down to 12.2°F (-11°C). A 50% concentration provides protection down to -29.2°F (-34°C). Explore More

The Fernox Alphi-11 Antifreeze Protector is a combined glycol-based antifreeze and inhibitor that provides long-term protection against frost, internal corrosion, and limescale in heating and chilled water systems, including geothermal systems. To ensure effective corrosion protection, a minimum in-use concentration of 25% is recommended, which offers frost protection down to 12.2°F (-11°C). A 50% concentration provides protection down to -29.2°F (-34°C). Explore More

The Fernox Alphi-11 Antifreeze Protector is a combined glycol-based antifreeze and inhibitor that provides long-term protection against frost, internal corrosion, and limescale in heating and chilled water systems, including geothermal systems. To ensure effective corrosion protection, a minimum in-use concentration of 25% is recommended, which offers frost protection down to 12.2°F (-11°C). A 50% concentration provides protection down to -29.2°F (-34°C). Explore More