Hot Blast 2500 Sq. Ft. Coal Only Warm Air Furnace 1500

The US Stove Hot Blast 1500 add-on furnace is designed to use in conjunction with your existing HVAC ductwork and work seamlessly with your existing furnace. With twin 500 CFM blowers and up to 139,000 BTUs, it's designed to heat a home up to 2,500 sq. ft. This coal-only unit is made with a firebrick-lined plate steel firebox surrounded by black painted steel, giving the unit an eye-appealing look, and connection to existing ductwork is easy with two 8 in. diameter heat outlets. Removable and replaceable shaker grates with a handle included add convenience, and a separate ash door with a removable dump pan makes cleanup simple. Extra heavy-duty cast iron doors, grates, and liners, along with an automatic bi-metal draft damper in the door, round out the construction. The firebox measures 20 in. W x 30.5 in. D x 19.5 in. H and is backed by a lifetime limited warranty, with 1 year coverage on other parts and electrical components. Available accessories include the universal filter box kit (UFB908) and the barometric damper regulator (DR-6); this unit is not approved for use in mobile or modular homes.

How The Hot Blast 1500 Compares To The US Stove CF1440E Large Coal Furnace

Homeowners evaluating how to add serious coal heat directly into their existing ductwork usually face this question: should I choose the CF1440E for a purpose-built coal furnace firebox, or select this Hot Blast 1500 for twin-blower redundancy and a more traditional add-on furnace design at the same 2,500 sq. ft. coverage.

Here's the honest comparison:

Why The Hot Blast 1500 Is Worth The Investment

This isn't just another add-on coal furnace, it's built with twin blowers already included, giving homeowners redundant air circulation and large airflow volume without needing to purchase separate blower units like some other coal furnaces in the category require.

The Hot Blast 1500 specifically addresses the needs of homeowners heating up to 2,500 sq. ft. who want a furnace that connects directly into existing ductwork with blower redundancy built in from the start, rather than as a separate purchase.

Turns Existing Ductwork Into A Redundant, High-Volume Coal Heating System. Twin 500 CFM blowers on the furnace provide redundancy and large amounts of airflow for easy heating, so if one blower needs service, the second keeps air moving through the ductwork rather than leaving the home without heat.

Built For Serious, All-Day Heat. Up to 139,000 BTUs comfortably warms spaces up to 2,500 sq. ft., and extra heavy-duty cast iron doors, grates, and liners are built for the demands of daily coal burning. A firebrick-lined firebox boosts efficiency and heating capacity.

Engineered For Convenient Maintenance. Removable and replaceable shaker grates with a handle included simplify ash management, and a separate ash door with a removable dump pan makes cleanup straightforward. An automatic bi-metal draft damper in the door helps regulate the burn without constant manual adjustment.

Real Savings. Twin blowers built into the furnace avoid the added cost of purchasing separate blower units required by some competing coal furnaces. Coal fuel can offer a longer, steadier burn than wood, reducing the frequency of refueling, and a lifetime limited warranty on the firebox 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 who want to feed serious coal heat directly into their existing HVAC ductwork with built-in blower redundancy can't get that same convenience from a furnace requiring separately purchased blowers. The Hot Blast 1500 is built with twin 500 CFM blowers, a firebrick-lined firebox, and removable shaker grates, so it delivers up to 139,000 BTUs of dependable, low-maintenance coal heat. For anyone with a larger home wanting a complete, self-contained coal furnace solution, this is the furnace built to make it work.

Features

• Heats up to 2,500 sq ft
• Up to 139,000 BTUs
• Connects to HVAC System
• Dual CFM 500 Blowers

• Heats up to 2,500 Sq Ft with 139,000 BTUs
• For use with coal only
• Removable/replaceable shaker grates with handle included
• Firebrick lined to boost efficiency and heating capacity
• Firebox dimensions: 20-in W x30-1/2-in D x 19-1/2-in H
• Separate ash door with removable dump pan
• Dual 8-in diameter heat outlets for easy connection to existing ductwork
• Twin 500 CFM blowers provide redundancy and large amounts of air flow
• Automatic bi-metal draft damper in door

Additional information