Parts town. Get real parts faster

Shopping Cart

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

Find Equipment Manuals

Loading...
Loading...

get special offers & news from parts town

+52 558.957.7295
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 Fall Season! SHOP NOW

Call: +52 558.957.7295
Hvac Parts
TECHTOWN
Track My Order
HVAC Parts Are Here!

HVAC Parts Are Here!

Shop the top brands in the industry.

Take Parts Town on the Go!

Take Parts Town on the Go!

Download the industry's #1 app today!

Find the parts you need to fix equipment!

Find the parts you need to fix equipment!

Based on data from techs, powered by AI!

We are ready to help!

We are ready to help!

We offer customer service support in Spanish

Flat rate shipping anywhere in Mexico $49.99

Flat rate shipping anywhere in Mexico $49.99

Inclusive of duties and brokerage.

Find the parts you need to fix equipment!

Find the parts you need to fix equipment!

Based on data from techs, powered by AI!

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

Refined By

Brand
AO Smith Water Heater

Model

loading spinner

Part Category

  • Accessories(1)
  • Actuators(2)
  • Air Shutters(10)
  • Baffles(162)
  • Baskets, Bowls & Containers(23)
  • Bearings & Bushings(16)
  • Belts, Pulleys & Sheaves(8)
  • Bezels(7)
  • Brackets & Retainers(42)
  • Bricks, Rocks & Briquettes(84)
  • Bulbs, Lamps & Lights(17)
  • Burners(829)
  • Buzzers & Speakers(1)
  • Capacitors(4)
  • Caps & Plugs(34)
  • Catches, Latches & Strikes(2)
  • Channels & Slides(1)
  • Circuit Breakers(2)
  • Clamps & Clips(13)
  • Compressors(1)
  • Condenser & Evaporator Coils(14)
  • Contactors(14)
  • Controls(340)
  • Conversion Kits(92)
  • Decals, Labels & Overlays(59)
  • Disconnects, Couplings & Collars(25)
  • Diverters & Deflectors(11)
  • Doors & Hardware(99)
  • Drain Parts(11)
  • Elements, Heaters & Platens(326)
  • Fan & Blower Motors(80)
  • Filters, Screens & Driers(45)
  • Fuses, Blocks & Holders(85)
  • Gaskets & Seals(324)
  • Gauge Glass(1)
  • Gauges & Thermometers(20)
  • Handles(2)
  • Holders & Supports(11)
  • Hoses, Pipes & Tubing(290)
  • Ignition Modules(19)
  • Ignitors & Electrodes(47)
  • Insulation(141)
  • Knobs & Dials(8)
  • Legs & Feet(14)
  • Nuts, Bolts & Screws(39)
  • O-Rings(16)
  • Orifices(119)
  • Panels, Covers & Lids(149)
  • Pans, Trays & Wells(10)
  • Pilot Burners(81)
  • Plates(29)
  • Potentiometers & Resistors(4)
  • Power Supplies & Cords(17)
  • Pressure Relief Controls(1)
  • Probes & Sensors(92)
  • Pumps & Motors(159)
  • Regulators(11)
  • Relays(29)
  • Rods, Shafts & Pins(31)
  • Shelves & Racks(5)
  • Shields & Guards(27)
  • Springs(2)
  • Switches & Buttons(253)
  • Temperature Controls(9)
  • Terminal Blocks(13)
  • Thermocouples & Thermopiles(27)
  • Thermostats & High Limits(118)
  • Timers(4)
  • Transformers(52)
  • Valves, Solenoids & Fittings(402)
  • Variable Frequency Drives (VFD)(7)
  • Washers, Rings & Spacers(12)
  • Wires, Cables & Hardware(204)
Cool,Calm and Collected- Real OEM HVAC Pars Are in Season! SHOP NOW

A.O. Smith Replacement Parts

Founded in 1874, A.O. Smith Corporation is an industry leader in commercial water heaters and boilers. The parent company of brands like American Water Heaters, GSW, U.S. Craftmaster, and more, A.O. Smith has a long line of solutions for high-efficiency water heating products like: 

  • Gas and Electric Water Heaters
  • Tankless Water Heaters
  • Water Filtration
  • Water Softening

Whether it's boosting a warewashing system with in-line hot water or another application, A.O. Smith has a product for the job. Parts Town has the most in-stock A.O. Smith replacement parts on the planet to help keep your unit operating smoothly. 

Need those parts now? No problem! Parts Town offers same day shipping on in-stock A.O. Smith replacement parts until 9 PM ET Monday-Friday and all online air orders until 4 PM ET Saturday.

AO Smith Water Heater

AO Smith Water Heater Parts & Manuals

A.O. Smith is a leader in the water heating and treatment space–especially when it comes to the commercial HVAC industry. Parts Town has real OEM A.O. Smith parts that have been specifically designed to fit and function with your unit. From sensors and pumps to switches and valves, we’ve got everything needed to help service your A.O. Smith unit. And because we only have genuine OEM A.O. Smith parts, you’ll know that they have been made to help keep your unit running safely and efficiently.

...
AO Smith Water Heater

AO Smith Water Heater Parts & Manuals

A.O. Smith is a leader in the water heating and treatment space–especially when it comes to the commercial HVAC industry. Parts Town has real OEM A.O. Smith parts that have been specifically designed to fit and function with your unit. From sensors and pumps to switches and valves, we’ve got everything needed to help service your A.O. Smith unit. And because we only have genuine OEM A.O. Smith parts, you’ll know that they have been made to help keep your unit running safely and efficiently.

...
ATIO-910
ATIO-910

380,000 BTU Non-Condensing Tankless Commercial Water Heater

Manufacturer:

AO Smith Water Heater

Parts
BTH-500A
BTH-500A

Cyclone Mxi Condensing Commercial Water Heater with Modulating Burner

Manufacturer:

AO Smith Water Heater

Parts
BTR-500A
BTR-500A

Master-Fit BTR Multi-Flue Commercial Water Heater

Manufacturer:

AO Smith Water Heater

Parts
DEL-20
DEL-20

Dura-Power 20-Gallon Light Duty Lowboy Commercial Water Heater

Manufacturer:

AO Smith Water Heater

Parts
DHE1250A-390
DHE1250A-390

Custom Horizontal Square Water Heaters

Manufacturer:

AO Smith Water Heater

Parts
DVE-52
DVE-52

Gold Xi Series 50-Gallon Commercial Water Heater

Manufacturer:

AO Smith Water Heater

Parts
DVE1250A-195
DVE1250A-195

Vertical Square Water Heater

Manufacturer:

AO Smith Water Heater

Parts
DVE250A-060
DVE250A-060

Custom Vertical Round

Manufacturer:

AO Smith Water Heater

Parts
EJC-10
EJC-10

ProLine 10-Gallon Specialty Compact Water Heater

Manufacturer:

AO Smith Water Heater

Parts
ENS-30
ENS-30

ProLine 30-Gallon Water Heater

Manufacturer:

AO Smith Water Heater

Parts
ENS-40
ENS-40

ProLine 40-Gallon Water Heater

Manufacturer:

AO Smith Water Heater

Parts
ENSB-30
ENSB-30

ProLine 30-Gallon Water Heater

Manufacturer:

AO Smith Water Heater

Parts
ATIO-910
Installation & Operation ManualInstallation & Operation ManualInstallation & Operation ManualParts ManualService Manual
ATIO-910
BTH-500A
Installation & Operation ManualParts ManualService ManualInteractive Diagram
BTH-500A
BTR-500A
Installation & Operation ManualService Manual
BTR-500A
DEL-20
Installation & Operation ManualParts Manual
DEL-20
DHE1250A-390
Installation & Operation Manual
DHE1250A-390
DVE-52
Installation & Operation ManualInstallation ManualService & Parts Manual
DVE-52
DVE1250A-195
Installation & Operation Manual
DVE1250A-195
DVE250A-060
Installation & Operation Manual
DVE250A-060
EJC-10
Installation & Operation ManualService & Parts Manual
EJC-10
ENS-30
Installation & Operation Manual
ENS-30
ENS-40
Installation & Operation Manual
ENS-40
ENSB-30
Installation & Operation Manual
ENSB-30

1 - 24 of 12

AO Smith Water Heater 100301928 Spark Igniter Assembly

AO Smith Water Heater
  • Mfr Part # 100301928
  • Parts Town # AOSM100301928
  • Quantity2

In Stock

AO Smith Water Heater 100110898 Burner Gasket, 3.75", Silicone

AO Smith Water Heater
  • Mfr Part # 100110898
  • Parts Town # AOSM100110898
  • Quantity3

In Stock

AO Smith Water Heater 100111021 Pressure Switch, Blower

AO Smith Water Heater
  • Mfr Part # 100111021
  • Parts Town # AOSM100111021
  • Quantity4

In Stock

AO Smith Water Heater 100111056 Blower Prover Press Switch, Natural and Propane Gas

AO Smith Water Heater
  • Mfr Part # 100111056
  • Parts Town # AOSM100111056
  • Quantity6

In Stock

AO Smith Water Heater 100338896 Gasket, Condensate Trap, Black

AO Smith Water Heater
  • Mfr Part # 100338896
  • Parts Town # AOSM100338896
  • Quantity20

In Stock

AO Smith Water Heater 100112746 Display Board

AO Smith Water Heater
  • Mfr Part # 100112746
  • Parts Town # AOSM100112746
  • Quantity8

In Stock

AO Smith Water Heater 100112396 Control Board

AO Smith Water Heater
  • Mfr Part # 100112396
  • Parts Town # AOSM100112396
  • Quantity2

In Stock

AO Smith Water Heater 100191119 Gasket Kit, Burner Plate

AO Smith Water Heater
  • Mfr Part # 100191119
  • Parts Town # AOSM100191119
  • Quantity8

In Stock

AO Smith Water Heater 100111830 Flame Sensor Kit

AO Smith Water Heater
  • Mfr Part # 100111830
  • Parts Town # AOSM100111830
  • Quantity2

In Stock

AO Smith Water Heater 100112457 Flame Rod/Sensor & Gasket

AO Smith Water Heater
  • Mfr Part # 100112457
  • Parts Town # AOSM100112457
  • Quantity2

In Stock

AO Smith Water Heater 100187867 Gasket, Burner

AO Smith Water Heater
  • Mfr Part # 100187867
  • Parts Town # AOSM100187867
  • Quantity1

In Stock

AO Smith Water Heater 100306849 Display Board, Combination Control

AO Smith Water Heater
  • Mfr Part # 100306849
  • Parts Town # AOSM100306849
  • Quantity2

In Stock

AO Smith Water Heater 100289339 NEUTRALIZER KIT 300K BTU, CN2-300C

AO Smith Water Heater
  • Mfr Part # 100289339
  • Parts Town # AOSM100289339
  • Quantity3

In Stock

AO Smith Water Heater 100078776 Gasket, Burner

AO Smith Water Heater
  • Mfr Part # 100078776
  • Parts Town # AOSM100078776
  • Quantity2

In Stock

AO Smith Water Heater 100083100 Wire Harness with Junction Box

AO Smith Water Heater
  • Mfr Part # 100083100
  • Parts Town # AOSM100083100
  • Quantity1

In Stock

AO Smith Water Heater 100108316 240V 3000W 8" HTG ELEMENT CU

AO Smith Water Heater
  • Mfr Part # 100108316
  • Parts Town # AOSM100108316
  • Quantity6

In Stock

AO Smith Water Heater 100109924 Blower Motor, BTH//SUF

AO Smith Water Heater
  • Mfr Part # 100109924
  • Parts Town # AOSM100109924
  • Quantity1

In Stock

AO Smith Water Heater 100110795 HOT SURFACE IGNITOR

AO Smith Water Heater
  • Mfr Part # 100110795
  • Parts Town # AOSM100110795
  • Quantity1

In Stock

AO Smith Water Heater 100110902 Gasket, Viewport, BTH300

AO Smith Water Heater
  • Mfr Part # 100110902
  • Parts Town # AOSM100110902
  • Quantity2

In Stock

AO Smith Water Heater 100111019 LOWER PROBE

AO Smith Water Heater
  • Mfr Part # 100111019
  • Parts Town # AOSM100111019
  • Quantity2

In Stock

AO Smith Water Heater 100111038 MAIN CONTROL BOARD

AO Smith Water Heater
  • Mfr Part # 100111038
  • Parts Town # AOSM100111038
  • Quantity1

In Stock

AO Smith Water Heater 100111050 Blower/Motor Assembly, 199/250 BTH

AO Smith Water Heater
  • Mfr Part # 100111050
  • Parts Town # AOSM100111050
  • Quantity1

In Stock

AO Smith Water Heater 100111598 Gas Valve, Natural

AO Smith Water Heater
  • Mfr Part # 100111598
  • Parts Town # AOSM100111598
  • Quantity1

In Stock

AO Smith Water Heater 100113158 SPARK MODULE

AO Smith Water Heater
  • Mfr Part # 100113158
  • Parts Town # AOSM100113158
  • Quantity2

In Stock

234