/
/








Parts town. Get real parts faster

Shopping Cart

Skip to NavigationSkip to Content
Loading...
Loading...
CAD
Multi-SKU Order
LoginRegister
Parts town. Get real parts faster

Find Equipment Manuals

Loading...
Loading...
  1. Home
  2. /
  3. Reznor
  4. /
  5. RDH 400A

Reznor RDH 400A Parts & Manuals

Manufacturer:

Model #:

Reznor

RDH 400A

Air Handler

Air Handler

Parts Town Logo

1-Hour Pickup Available

Model: RDH 400A

Manuals Available: 5

Installation & Operation Manual

View Manual

Installation & Operation Manual

View Manual

Installation & Operation Manual

View Manual

Parts Manual

View Manual

Service Manual

View Manual

get special offers & news from parts town

800.239.5152
Loading...
Loading...
visa
visa
mastercard
mastercard
american-express
american-express
discover
discover
paypal
paypal
© 2026 Parts Town. All rights reserved.
Loading...
visa
visa
mastercard
mastercard
american-express
american-express
discover
discover
paypal
paypal

Stock Up on Real OEM HVAC Parts for the Summer Season! SHOP NOW

Call: 800.239.5152
Hvac Parts
TECHTOWN
Track My Order

Important Update: Click here for the latest information on tariffs and their impact on our industry.

Help Desk

  • Contact Us
  • Shipping
  • Taxes And Fees
  • Returns
  • FAQ

Inside Parts Town

  • About Us
  • Careers
  • Our Difference
  • Resource Center
  • Parts Town Blog
  • techtown
  • International

Technology and Innovations

  • Parts Town App
  • Serial Number Lookup
  • Smart Manuals
  • Website Features
  • Terms of Use
  • Privacy Policy
  • Privacy Request

Part Category

  • Actuators(1)
  • Bearings & Bushings(4)
  • Belts, Pulleys & Sheaves(15)
  • Brackets & Retainers(4)
  • Burners(2)
  • Capacitors(2)
  • Caps & Plugs(6)
  • Clamps & Clips(2)
  • Condenser & Evaporator Coils(2)
  • Contactors(3)
  • Controls(9)
  • Conversion Kits(1)
  • Decals, Labels & Overlays(12)
  • Disconnects, Couplings & Collars(3)
  • Doors & Hardware(2)
  • Drain Parts(4)
  • Fan & Blower Motors(9)
  • Fan Blades & Blower Wheels(1)
  • Filters, Screens & Driers(35)
  • Fuses, Blocks & Holders(10)
  • Gaskets & Seals(14)
  • Handles(1)
  • Hinges(1)
  • Holders & Supports(9)
  • Hoses, Pipes & Tubing(14)
  • Ignition Modules(1)
  • Ignitors & Electrodes(2)
  • Light Sockets & Lampholders(1)
  • Nuts, Bolts & Screws(15)
  • Orifices(5)
  • Panels, Covers & Lids(18)
  • Pans, Trays & Wells(3)
  • Plates(1)
  • Probes & Sensors(7)
  • Pumps & Motors(20)
  • Relays(19)
  • Rods, Shafts & Pins(1)
  • Shelves & Racks(2)
  • Shields & Guards(6)
  • Springs(1)
  • Switches & Buttons(19)
  • Terminal Blocks(3)
  • Thermostats & High Limits(6)
  • Transformers(5)
  • Valves, Solenoids & Fittings(16)
  • Variable Frequency Drives (VFD)(3)
  • Washers, Rings & Spacers(5)
  • Wires, Cables & Hardware(5)
Cool,Calm and Collected- Real OEM HVAC Pars Are in Season! SHOP NOW

Part Category

  • Actuators(1)
  • Bearings & Bushings(4)
  • Belts, Pulleys & Sheaves(15)
  • Brackets & Retainers(4)
  • Burners(2)
  • Capacitors(2)
  • Caps & Plugs(6)
  • Clamps & Clips(2)
  • Condenser & Evaporator Coils(2)
  • Contactors(3)
  • Controls(9)
  • Conversion Kits(1)
  • Decals, Labels & Overlays(12)
  • Disconnects, Couplings & Collars(3)
  • Doors & Hardware(2)
  • Drain Parts(4)
  • Fan & Blower Motors(9)
  • Fan Blades & Blower Wheels(1)
  • Filters, Screens & Driers(35)
  • Fuses, Blocks & Holders(10)
  • Gaskets & Seals(14)
  • Handles(1)
  • Hinges(1)
  • Holders & Supports(9)
  • Hoses, Pipes & Tubing(14)
  • Ignition Modules(1)
  • Ignitors & Electrodes(2)
  • Light Sockets & Lampholders(1)
  • Nuts, Bolts & Screws(15)
  • Orifices(5)
  • Panels, Covers & Lids(18)
  • Pans, Trays & Wells(3)
  • Plates(1)
  • Probes & Sensors(7)
  • Pumps & Motors(20)
  • Relays(19)
  • Rods, Shafts & Pins(1)
  • Shelves & Racks(2)
  • Shields & Guards(6)
  • Springs(1)
  • Switches & Buttons(19)
  • Terminal Blocks(3)
  • Thermostats & High Limits(6)
  • Transformers(5)
  • Valves, Solenoids & Fittings(16)
  • Variable Frequency Drives (VFD)(3)
  • Washers, Rings & Spacers(5)
  • Wires, Cables & Hardware(5)
Cool,Calm and Collected- Real OEM HVAC Pars Are in Season! SHOP NOW

Reznor 208383 MOTOR BASE ADJ MODEL 182A1

Reznor
  • Mfr Part # 208383
  • Parts Town # REZ208383
  • Quantity0

Out of stock, but not out of mind! Place your order now and we'll get it to you ASAP.

Reznor 208384 MOTOR BASE ADJ MODEL 184A1

Reznor
  • Mfr Part # 208384
  • Parts Town # REZ208384
  • Quantity0

Out of stock, but not out of mind! Place your order now and we'll get it to you ASAP.

Reznor 20859 WASHER HEX HD SLOTTED #10X3/4

Reznor
  • Mfr Part # 20859
  • Parts Town # REZ20859
  • Quantity0

Out of stock, but not out of mind! Place your order now and we'll get it to you ASAP.

Reznor 208876 MARKING LABEL KIT

Reznor
  • Mfr Part # 208876
  • Parts Town # REZ208876
  • Quantity0

Out of stock, but not out of mind! Place your order now and we'll get it to you ASAP.

Reznor 208989 Transformer, 480/240/208/120 to 24 Volt, 75VA

Reznor
  • Mfr Part # 208989
  • Parts Town # REZ208989
  • Quantity0

Out of stock, but not out of mind! Place your order now and we'll get it to you ASAP.

Reznor 209010 BOX CVR TNB WGF100-CWH

Reznor
  • Mfr Part # 209010
  • Parts Town # REZ209010
  • Quantity0

Out of stock, but not out of mind! Place your order now and we'll get it to you ASAP.

Reznor 20913 PLASTIC STRAP TY-RAP TY B24M

Reznor
  • Mfr Part # 20913
  • Parts Town # REZ20913
  • Quantity0

Out of stock, but not out of mind! Place your order now and we'll get it to you ASAP.

Reznor 209351 Damper Motor for 2-Position Damper

Reznor
  • Mfr Part # 209351
  • Parts Town # REZ209351
  • Quantity0

Out of stock, but not out of mind! Place your order now and we'll get it to you ASAP.

Reznor 209797 BURNER SHIELD END IDF

Reznor
  • Mfr Part # 209797
  • Parts Town # REZ209797
  • Quantity0

Out of stock, but not out of mind! Place your order now and we'll get it to you ASAP.

Reznor 209804 BNR SHIELD REAR IDF 400

Reznor
  • Mfr Part # 209804
  • Parts Town # REZ209804
  • Quantity0

Out of stock, but not out of mind! Place your order now and we'll get it to you ASAP.

Reznor 209811 BURNER CONDENS SHIELD IDF 12

Reznor
  • Mfr Part # 209811
  • Parts Town # REZ209811
  • Quantity0

Out of stock, but not out of mind! Place your order now and we'll get it to you ASAP.

Reznor 209822 BURNER SHIELD ASSEMBLY IDF 12

Reznor
  • Mfr Part # 209822
  • Parts Town # REZ209822
  • Quantity0

Out of stock, but not out of mind! Place your order now and we'll get it to you ASAP.

Reznor 209865 COLLECTION BOX ASSEMBLY IDF 400

Reznor
  • Mfr Part # 209865
  • Parts Town # REZ209865
  • Quantity0

Out of stock, but not out of mind! Place your order now and we'll get it to you ASAP.

Reznor 209973 Flame Sensor

Reznor
  • Mfr Part # 209973
  • Parts Town # REZ209973
  • Quantity0

Out of Stock, backorders usually ship in 10-12 days.

Reznor 209989 Mounting Bracket, Ignitor/Sensor

Reznor
  • Mfr Part # 209989
  • Parts Town # REZ209989
  • Quantity0

Out of stock, but not out of mind! Place your order now and we'll get it to you ASAP.

Reznor 209990 Ignitor Assembly

Reznor
  • Mfr Part # 209990
  • Parts Town # REZ209990
  • Quantity0

Out of stock, but not out of mind! Place your order now and we'll get it to you ASAP.

Reznor 210029 HINGE

Reznor
  • Mfr Part # 210029
  • Parts Town # REZ210029
  • Quantity0

Out of stock, but not out of mind! Place your order now and we'll get it to you ASAP.

Reznor 210088 FILTER TRACK SUPT IDF

Reznor
  • Mfr Part # 210088
  • Parts Town # REZ210088
  • Quantity0

Out of stock, but not out of mind! Place your order now and we'll get it to you ASAP.

Reznor 210615 HEADER SIDE IDF 175-400

Reznor
  • Mfr Part # 210615
  • Parts Town # REZ210615
  • Quantity0

Out of stock, but not out of mind! Place your order now and we'll get it to you ASAP.

Reznor 210791 COLL BOX GASKET END IDF

Reznor
  • Mfr Part # 210791
  • Parts Town # REZ210791
  • Quantity0

Out of stock, but not out of mind! Place your order now and we'll get it to you ASAP.

Reznor 210860 TWINBLOWER 12X12 1"SHAFT

Reznor
  • Mfr Part # 210860
  • Parts Town # REZ210860
  • Quantity0

Out of stock, but not out of mind! Place your order now and we'll get it to you ASAP.

Reznor 210861 VIBRATION ISOLATORS

Reznor
  • Mfr Part # 210861
  • Parts Town # REZ210861
  • Quantity0

Out of stock, but not out of mind! Place your order now and we'll get it to you ASAP.

Reznor 210863 Transformer, 460/575 to 230VAC, 350VA

Reznor
  • Mfr Part # 210863
  • Parts Town # REZ210863
  • Quantity0

Out of stock, but not out of mind! Place your order now and we'll get it to you ASAP.

Reznor 210872 FILTER RACK ASSEMBLY IDF E

Reznor
  • Mfr Part # 210872
  • Parts Town # REZ210872
  • Quantity0

Out of stock, but not out of mind! Place your order now and we'll get it to you ASAP.

789