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Today's Hours 8am - 11pm estDuct Furnaces
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SAVE $1,570.00Reznor EEDU-75, 75,000 BTU Duct Furnace, Indoor, Power-VentedModel: EEDU-75-AA1Was $4,919.00 Your Low Price Special Price $3,349.00 -
SAVE $1,406.00Reznor EEDU-100, 100,00 BTU Duct Furnace, Indoor, Power-VentedModel: EEDU-100-AA1Was $5,048.00 Your Low Price Special Price $3,642.00 -
SAVE $1,443.00Reznor EEDU-125, 125,000 BTU Duct Furnace, Indoor, Power-VentedModel: EEDU-125-AA1Was $5,335.00 Your Low Price Special Price $3,892.00 -
SAVE $1,495.00Reznor EEDU-140, 140,000 BTU Duct Furnace, Indoor, Power-VentedModel: EEDU-140-AA1Was $5,482.00 Your Low Price Special Price $3,987.00 -
SAVE $1,744.00Reznor EEDU-170, 170,000 BTU Duct Furnace, Indoor, Power-VentedModel: EEDU-170-AA1Was $5,773.00 Your Low Price Special Price $4,029.00 -
SAVE $1,752.00Reznor EEDU-200, 200,000 BTU Duct Furnace, Indoor, Power-VentedModel: EEDU-200-AA1Was $5,991.00 Your Low Price Special Price $4,239.00 -
SAVE $2,087.00Reznor EEDU-225, 225,000 BTU Duct Furnace, Indoor, Power-VentedModel: EEDU-225-AA1Was $6,476.00 Your Low Price Special Price $4,389.00 -
SAVE $2,393.00Reznor RP-125, 125,000 BTU Duct Furnace, Outdoor, Power-VentedModel: RP-125-AA1Was $6,982.00 Your Low Price Special Price $4,589.00 -
SAVE $1,984.00Reznor EEDU-250, 250,000 BTU Duct Furnace, Indoor, Power-VentedModel: EEDU-250-AA1Was $6,773.00 Your Low Price Special Price $4,789.00 -
SAVE $2,747.00Reznor EEDU-300, 300,000 BTU Duct Furnace, Indoor, Power-VentedModel: EEDU-300-AA1Was $8,116.00 Your Low Price Special Price $5,369.00 -
SAVE $2,232.00Reznor RP-150, 150,000 BTU Duct Furnace, Outdoor, Power-VentedModel: RP-150-AA1Was $7,611.00 Your Low Price Special Price $5,379.00 -
SAVE $2,232.00Reznor RP-175, 175,000 BTU Duct Furnace, Outdoor, Power-VentedModel: RP-175-AA1Was $7,611.00 Your Low Price Special Price $5,379.00 -
SAVE $2,786.00Reznor RP-200, 200,000 BTU Duct Furnace, Outdoor, Power-VentedModel: RP-200-AA1Was $8,484.00 Your Low Price Special Price $5,698.00 -
SAVE $2,786.00Reznor RP-225, 225,000 BTU Duct Furnace, Outdoor, Power-VentedModel: RP-225-AA1Was $8,484.00 Your Low Price Special Price $5,698.00 -
SAVE $2,668.00Reznor EEDU-350, 350,000 BTU Duct Furnace, Indoor, Power-VentedModel: EEDU-350-AA1Was $8,707.00 Your Low Price Special Price $6,039.00 -
SAVE $3,066.00Reznor EEDU-400, 400,000 BTU Duct Furnace, Indoor, Power-VentedModel: EEDU-400-AA1Was $9,313.00 Your Low Price Special Price $6,247.00 -
SAVE $2,766.00Reznor RP-250, 250,000 BTU Duct Furnace, Outdoor, Power-VentedModel: RP-250-AA1Was $9,095.00 Your Low Price Special Price $6,329.00 -
SAVE $3,007.00Reznor RP-300, 300,000 BTU Duct Furnace, Outdoor, Power-VentedModel: RP-300-AA1Was $9,556.00 Your Low Price Special Price $6,549.00 -
SAVE $3,389.00Reznor RP-350, 350,000 BTU Duct Furnace, Outdoor, Power-VentedModel: RP-350-AA1Was $10,846.00 Your Low Price Special Price $7,457.00 -
SAVE $3,567.00Reznor RP-400, 400,000 BTU Duct Furnace, Outdoor, Power-VentedModel: RP-400-AA1Was $11,426.00 Your Low Price Special Price $7,859.00 -
SAVE $4,845.00Reznor HRPD-250, 250,000 BTU Duct Furnace, Outdoor, Power-VentedModel: HRPD-250-AA1Was $14,844.00 Your Low Price Special Price $9,999.00 -
SAVE $5,251.00Reznor HRPD-300, 300,000 BTU Duct Furnace, Outdoor, Power-VentedModel: HRPD-300-AA1Was $15,500.00 Your Low Price Special Price $10,249.00 -
SAVE $5,044.00Reznor HRPD-350, 350,000 BTU Duct Furnace, Outdoor, Power-VentedModel: HRPD-350-AA1Was $15,993.00 Your Low Price Special Price $10,949.00 -
SAVE $5,239.00Reznor HRPD-400, 400,000 BTU Duct Furnace, Outdoor, Power-VentedModel: HRPD-400-AA1Was $16,488.00 Your Low Price Special Price $11,249.00
Duct Furnaces & Make-Up Air Heaters
Shop Modine, Reznor & King Electric Commercial Heating Solutions
Looking for a high-performance commercial duct furnace or make-up air (MUA) heater? We offer industry-leading solutions from Modine, Reznor, and King Electric—designed for seamless integration into HVAC duct systems, ventilation setups, and dedicated make-up air applications.
From gas duct furnaces to electric make-up air heaters, these systems provide efficient, reliable heating for commercial and industrial environments.
Gas Duct Furnaces vs. Electric Make-Up Air Heaters
Choosing the right system starts with understanding the application:
Gas Duct Furnaces (Modine & Reznor)
- Installed directly in ductwork to heat moving air
- Ideal for central HVAC systems and retrofit applications
- Typically powered by natural gas or propane
- Best for high-capacity heating with lower operating costs
Electric Make-Up Air (MUA) Heaters (King Electric)
- Designed to heat incoming fresh air replacing exhausted air
- Ideal for ventilation-heavy environments
- Zero emissions at point of use
- Best for tight buildings, code compliance, and electrification projects
Brand Comparison: Modine vs. Reznor vs. King Electric
Modine Duct Furnaces
- Strong balance of cost, performance, and reliability
- Ideal for light commercial to mid-duty industrial use
- Straightforward controls and easy installation
- Excellent option for contractor-friendly installs
Reznor Duct Furnaces
- Heavy-duty construction for demanding industrial environments
- Advanced diagnostics and control options
- Designed for high-capacity, continuous operation
- Premium choice for performance and longevity
King Electric MUA Heaters
- Purpose-built for make-up air and ventilation heating
- All-electric operation with clean, emission-free performance
- Ideal for code-driven fresh air requirements
- Strong solution for electrification and decarbonization projects
Key Features of Commercial Duct Furnaces & MUA Heaters
When evaluating commercial heating equipment, look for:
- High-efficiency heat exchangers (gas models)
- Electric resistance heating elements (MUA units)
- Separated combustion options (gas units)
- Precise airflow and temperature control
- Multiple BTU and kW capacities
- Compatibility with building automation systems (BAS)
- Horizontal and vertical installation configurations
Applications
Our duct furnaces and make-up air heaters are ideal for:
- Warehouses & distribution centers
- Manufacturing facilities
- Commercial kitchens & exhaust-heavy spaces
- Automotive shops & service bays
- Retail stores & office buildings
- Mechanical rooms & HVAC systems
- Buildings requiring balanced ventilation / make-up air
How to Choose the Right System
Selecting between a gas duct furnace and an electric MUA heater depends on:
- Heating Load (BTU/kW requirements)
- Airflow (CFM) and ventilation needs
- Fuel availability (gas vs. electric)
- Building code requirements (fresh air / MUA)
- Energy efficiency goals and electrification strategy
- Installation type (new construction vs. retrofit)
Why Buy From Us?
Customer Satisfaction
Our dedicated staff works hard to ensure that all orders are handled quickly and efficiently to ensure that you get what you ordered as quickly as possible.
Security
We provide a secure online shopping experience to protect your information. We also provide the option to checkout with PayPal to allow you to use a checkout service you are familiar with.
Save Money
We provide you great prices so you can save your money for the more important things in your life.