Upgrade and maintain your heating system with our extensive selection of extra parts for wood boilers and furnaces. From laminated solenoids and electrical components to chimney parts, single replacement pieces, thermal wells, and optional add-ons, we have every component you need to ensure long-term efficiency and reliable performance. By replacing worn or outdated parts with high-quality, durable products, you’ll extend the life of your wood boiler or furnace and enjoy consistent heat throughout the season. At Altheatsupply.com, we’re dedicated to helping you find the perfect solution for all your extra part needs, so you can keep your home or business warm and comfortable year-round.

Laminated Solenoids for Precise Air Control

Laminated solenoids regulate the draft door or combustion‑air intake on a wood boiler or wood furnace, opening and closing in response to the controller’s call for heat. By swapping in a high‑quality laminated solenoid, you’ll maintain steady airflow, achieve cleaner burns, and boost overall efficiency.

Electrical Parts to Keep Your System Powered

Our electrical parts—relays, control boards, thermostats, wiring harnesses, and fuses—live inside the boiler or furnace control panel, orchestrating ignition, blower speed, and safety shut‑offs. Replacing worn electrical components prevents downtime and keeps your heating cycle running smoothly.

Chimney Parts for Safe, Efficient Draft

From insulated chimney pipe and adapters to rain caps and clean‑out tees, these parts connect the flue collar of your wood boiler or furnace to the outside world. Upgrading chimney components improves draft, reduces creosote buildup, and meets local code requirements. 

Single Replacement Parts for Quick Fixes

Need a new door gasket, blower motor, or firebrick? Our single replacement parts target high‑wear spots inside the firebox and around the loading door, restoring airtight seals and peak combustion efficiency without a full overhaul. 

Thermal Wells for Accurate Temperature Monitoring

Thermal wells (thermowells) thread into supply or return lines and shield temperature probes from system pressure and corrosion. Accurate sensor readings allow your controller to modulate pumps and fans for optimal burn cycles. 

Optional Parts & Accessories to Optimize Performance

Boost comfort and convenience with optional accessories such as water‑to‑air heat exchangers, mixing valves, ash pan extensions, and circulation pump kits. These add-ons integrate seamlessly with most outdoor wood boilers and indoor wood furnaces, tailoring the system to your exact heating needs.