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ADP is a leader in the unit heater market. Whether you need additional heating in your small garage or in a large warehouse, we carry a full line of ADP heaters for every application. Start for shopping ADP heaters below!
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ADP HED-200A Duct Furnace, Aluminized Steel Heat Exchanger, NG - 200,000 BTU, Natural Gas Fuel Type
Scratch & Dent
$1,199.00
Was 
$1,299.00
SAVE $100.00
Only 1 In-Stock
Free Shipping
? *This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges map apply, see our full shipping policy for more details.
ADP FSAP60 Low Profile Unit Heater, Standard Combustion, LP - 60,000 BTU, Liquid Propane Fuel Type
17% Buy This
$795.00
Factory-Direct
Free Shipping & Lift Gate
? *This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges map apply, see our full shipping policy for more details.
ADP - 165295205 - Gas Conversion Kit - Natural Gas to Liquid Propane - For ADP SEP 200 Unit Heaters
$39.00
Factory-Direct
Free Shipping & Lift Gate
? *This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges map apply, see our full shipping policy for more details.
ADP - 165295204 - Gas Conversion Kit - Natural Gas to Liquid Propane - For ADP CUH and FSA Unit Heaters
$60.00
Only 1 In-Stock
Free Shipping & Lift Gate
? *This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges map apply, see our full shipping policy for more details.
ADP SEP-200AN Standard Combustion Commercial Unit Heater, Aluminized Steel Heat Exchanger, NG - 200,000 BTU, Natural Gas Fuel Type
10% Buy This
$1,170.00
Factory-Direct
Free Shipping & Lift Gate
? *This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges map apply, see our full shipping policy for more details.
2% Check Discount
? Save 2% instantly by using our convenient "e-check" option or by simply mailing us a paper check. Yes, your order will be delayed slightly (5 business days). But, if you can wait, the savings are significant.
ADP - 165295202 - Gas Conversion Kit - Natural Gas to Liquid Propane - For ADP SEP 115, 145, and 175 Unit Heaters
$128.99
Factory-Direct
Free Shipping & Lift Gate
? *This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges map apply, see our full shipping policy for more details.
ADP SEP-100AN Standard Combustion Commercial Unit Heater, Aluminized Steel Heat Exchanger, NG - 100,000 BTU, Natural Gas Fuel Type
3% Buy This
$910.00
Factory-Direct
Free Shipping & Lift Gate
? *This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges map apply, see our full shipping policy for more details.
ADP SEP-100SN Standard Combustion Commercial Unit Heater, Stainless Steel Heat Exchanger, NG - 100,000 BTU, Natural Gas Fuel Type
3% Buy This
$1,042.95
Factory-Direct
Free Shipping & Lift Gate
? *This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges map apply, see our full shipping policy for more details.
2% Check Discount
? Save 2% instantly by using our convenient "e-check" option or by simply mailing us a paper check. Yes, your order will be delayed slightly (5 business days). But, if you can wait, the savings are significant.
ADP SEP-145AN Standard Combustion Commercial Unit Heater, Aluminized Steel Heat Exchanger, NG - 145,000 BTU, Natural Gas Fuel Type
3% Buy This
$1,040.00
Only 5 In-Stock
Free Shipping & Lift Gate
? *This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges map apply, see our full shipping policy for more details.
2% Check Discount
? Save 2% instantly by using our convenient "e-check" option or by simply mailing us a paper check. Yes, your order will be delayed slightly (5 business days). But, if you can wait, the savings are significant.
ADP SEP-200AP Standard Combustion Commercial Unit Heater, Aluminized Steel Heat Exchanger, LP - 200,000 BTU, Liquid Propane Fuel Type
3% Buy This
$1,210.00
Factory-Direct
Free Shipping & Lift Gate
? *This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges map apply, see our full shipping policy for more details.
2% Check Discount
? Save 2% instantly by using our convenient "e-check" option or by simply mailing us a paper check. Yes, your order will be delayed slightly (5 business days). But, if you can wait, the savings are significant.
ADP SEP-200SN Standard Combustion Commercial Unit Heater, Stainless Steel Heat Exchanger, NG - 200,000 BTU, Natural Gas Fuel Type
3% Buy This
$1,465.95
Factory-Direct
Free Shipping & Lift Gate
? *This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges map apply, see our full shipping policy for more details.
2% Check Discount
? Save 2% instantly by using our convenient "e-check" option or by simply mailing us a paper check. Yes, your order will be delayed slightly (5 business days). But, if you can wait, the savings are significant.
ADP SEP-230AN Standard Combustion Commercial Unit Heater, Aluminized Steel Heat Exchanger, NG - 230,000 BTU, Natural Gas Fuel Type
3% Buy This
$1,390.00
Only 4 In-Stock
Free Shipping & Lift Gate
? *This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges map apply, see our full shipping policy for more details.
2% Check Discount
? Save 2% instantly by using our convenient "e-check" option or by simply mailing us a paper check. Yes, your order will be delayed slightly (5 business days). But, if you can wait, the savings are significant.
ADP SEP-250AP Standard Combustion Commercial Unit Heater, Aluminized Steel Heat Exchanger, LP - 250,000 BTU, Liquid Propane Fuel Type
3% Buy This
$1,520.00
Factory-Direct
Free Shipping & Lift Gate
? *This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges map apply, see our full shipping policy for more details.
2% Check Discount
? Save 2% instantly by using our convenient "e-check" option or by simply mailing us a paper check. Yes, your order will be delayed slightly (5 business days). But, if you can wait, the savings are significant.
ADP SEP-250SN Standard Combustion Commercial Unit Heater, Stainless Steel Heat Exchanger, NG - 250,000 BTU, Natural Gas Fuel Type
3% Buy This
$1,728.95
Factory-Direct
Free Shipping & Lift Gate
? *This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges map apply, see our full shipping policy for more details.
2% Check Discount
? Save 2% instantly by using our convenient "e-check" option or by simply mailing us a paper check. Yes, your order will be delayed slightly (5 business days). But, if you can wait, the savings are significant.
ADP SEP-300AN Standard Combustion Commercial Unit Heater, Aluminized Steel Heat Exchanger, NG - 300,000 BTU, Natural Gas Fuel Type
3% Buy This
$1,560.00
In-Stock
Free Shipping & Lift Gate
? *This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges map apply, see our full shipping policy for more details.
2% Check Discount
? Save 2% instantly by using our convenient "e-check" option or by simply mailing us a paper check. Yes, your order will be delayed slightly (5 business days). But, if you can wait, the savings are significant.
ADP SEP-400AP Standard Combustion Commercial Unit Heater, Aluminized Steel Heat Exchanger, LP - 390,000 BTU, Liquid Propane Fuel Type
3% Buy This
$1,840.00
Factory-Direct
Free Shipping & Lift Gate
? *This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges map apply, see our full shipping policy for more details.
2% Check Discount
? Save 2% instantly by using our convenient "e-check" option or by simply mailing us a paper check. Yes, your order will be delayed slightly (5 business days). But, if you can wait, the savings are significant.
ADP FSAN30 Low Profile Unit Heater, Standard Combustion, NG - 30,000 BTU, Natural Gas Fuel Type
$690.00
Only 4 In-Stock
Free Shipping & Lift Gate
? *This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges map apply, see our full shipping policy for more details.
ADP FSAP30 Low Profile Unit Heater, Standard Combustion, LP - 30,000 BTU, Liquid Propane Fuel Type
$699.00
Factory-Direct
Free Shipping & Lift Gate
? *This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges map apply, see our full shipping policy for more details.
ADP FSAN45 Low Profile Unit Heater, Standard Combustion, NG - 45,000 BTU, Natural Gas Fuel Type
$715.00
In-Stock
Free Shipping & Lift Gate
? *This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges map apply, see our full shipping policy for more details.
ADP FSAN60 Low Profile Unit Heater, Standard Combustion, NG - 60,000 BTU, Natural Gas Fuel Type
$792.00
In-Stock
Free Shipping & Lift Gate
? *This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges map apply, see our full shipping policy for more details.
ADP FSAN75 Low Profile Unit Heater, Standard Combustion, NG - 75,000 BTU, Natural Gas Fuel Type
$810.00
In-Stock
Free Shipping & Lift Gate
? *This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges map apply, see our full shipping policy for more details.
ADP SEP-100SP Standard Combustion Commercial Unit Heater, Stainless Steel Heat Exchanger, LP - 100,000 BTU, Liquid Propane Fuel Type
$1,070.95
Factory-Direct
Free Shipping & Lift Gate
? *This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges map apply, see our full shipping policy for more details.
2% Check Discount
? Save 2% instantly by using our convenient "e-check" option or by simply mailing us a paper check. Yes, your order will be delayed slightly (5 business days). But, if you can wait, the savings are significant.
ADP SEP-115AN Standard Combustion Commercial Unit Heater, Aluminized Steel Heat Exchanger, NG - 115,000 BTU, Natural Gas Fuel Type
$980.00
Only 4 In-Stock
Free Shipping & Lift Gate
? *This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges map apply, see our full shipping policy for more details.
ADP SEP-115AP Standard Combustion Commercial Unit Heater, Aluminized Steel Heat Exchanger, LP - 115,000 BTU, Liquid Propane Fuel Type
$1,050.00
Factory-Direct
Free Shipping & Lift Gate
? *This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges map apply, see our full shipping policy for more details.
2% Check Discount
? Save 2% instantly by using our convenient "e-check" option or by simply mailing us a paper check. Yes, your order will be delayed slightly (5 business days). But, if you can wait, the savings are significant.

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