Hot Blast Wood Furnace HB1520

The Hot Blast HB1520 by US Stove is a wood burning furnace designed to use in conjunction with your existing HVAC ductwork. With twin 500 CFM blowers and up to 180,000 BTUs, it's designed to heat a home up to 3,500 sq. ft. Its heavy duty cast-iron door with a glass viewing front gives out the ambience of a flame without compromising efficiency, and it's ideal for logs up to 23 in. long. The open plenum allows for easy installation, and with a built-in ash pan and firebrick-lined combustion chamber, the HB1520 is a great option for heating larger spaces in the furnace category. This EPA certified furnace exceeds 75% efficiency and qualifies for the 30% IRS 25C Residential Energy Tax Credit. The unit is not approved for use in mobile homes and is backed by a 5 year firebox and grates limited warranty, with 1 year coverage on electrical components.

How The Hot Blast HB1520 Compares To The Hot Blast 1500 Coal Furnace

Homeowners evaluating how to add whole-home heat into their existing ductwork usually face this question: should I choose the Hot Blast 1500 for coal-only heating up to 2,500 sq. ft., or select this HB1520 for wood-burning heat with an even larger 3,500 sq. ft. of coverage and a viewable flame.

Here's the honest comparison:

Why The Hot Blast HB1520 Is Worth The Investment

This isn't just another add-on furnace, it's an EPA certified wood-burning system with the largest coverage and highest BTU output in the Hot Blast furnace lineup, giving homeowners genuine whole-home wood heat through their existing ductwork.

The HB1520 specifically addresses the needs of homeowners heating the largest spaces, up to 3,500 sq. ft., who want to see the fire while feeding wood-generated heat directly into their home's existing duct system.

Turns Existing Ductwork Into A High-Capacity Wood Heating System. Twin 500 CFM blowers push up to 180,000 BTUs of wood-fired heat through the same ductwork your furnace already uses, so warmth reaches every connected room while the glass viewing front lets you watch the fire without opening the door.

Built For Serious, All-Day Heat. Up to 180,000 BTUs comfortably warms spaces up to 3,500 sq. ft., the largest coverage in the Hot Blast furnace lineup, and the unit accepts logs up to 23 in. long for fewer, larger loads. A firebrick-lined combustion chamber boosts efficiency and heating capacity.

Engineered For Cleaner Burning And Easy Maintenance. EPA certification and 75%-plus efficiency mean cleaner combustion than a non-certified furnace, while a built-in ash pan simplifies routine cleanup. The open plenum design allows for easier installation into existing ductwork.

Real Savings. Qualifying for the 30% IRS 25C Residential Energy Tax Credit can meaningfully offset the purchase cost. Wood fuel can be less expensive than gas or electric heating in areas with access to firewood, and a 5 year firebox and grates warranty reduces the risk of costly early replacement. Free shipping and no sales tax through Summit Forge Supply keeps the total cost down compared to buying elsewhere and paying tax and freight separately.

The Bottom Line Homeowners heating the largest spaces who want EPA-certified wood heat fed directly into their existing ductwork can't get the same coverage from the coal-only Hot Blast 1500. The Hot Blast HB1520 is built with twin 500 CFM blowers, a glass viewing door, and up to 180,000 BTUs of output, so it delivers the most powerful wood-fired furnace heat in the lineup. For anyone with the largest home wanting whole-home wood heat through existing ductwork, this is the furnace built to make it work.

Features

• Up to 3,500 sq ft
• Up to 180,000 BTUs
• 3.95 cubic feet firebox
• Non-Catalytic Secondary Burn
• EPA Approved

• Heats up to 3,500 Sq Ft of living space with 180,000 BTUs
• Accepts logs up to 23″ and easy to load
• Twin CFM 500 blowers provide maximum heat output
• EPA Certified (Non-Catalytic)
• 50 CFM Combustion blower
• Heavy Duty cast-iron door with viewing window
• Firebrick lined to boost efficiency and heating capacity
• Built in ash pan for easy clean up
• Filter box included (requires assembly)
• Accepts standard 16x24x1 Air Filters (not included)
• Recommended installation by NFI Certified Installer (USA) or WETT Certified Installer (Canada)

Additional information