Gas Water Heater

Model # HM350NHDST Official Maytag gas water heater

Here are the diagrams and repair parts for Official Maytag HM350NHDST gas water heater, as well as links to manuals and error code tables, if available.

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Browse Parts for
HM350NHDST Water Heaters
Gas Conversion Kit Valve 66001457
#17

Body diagram

Gas conversion kit valve

Part #66001457

The manufacturer no longer makes this part, and there's no substitute part

Manifold 66001322
#15A

Body diagram

Manifold

Part #66001322

The manufacturer no longer makes this part, and there's no substitute part

Burner Orifice 66001434
#14D

Body diagram

Burner orifice

Part #66001434

The manufacturer no longer makes this part, and there's no substitute part

Pipe, Extension (10") (optional) 66001448
#2

Body diagram

Pipe, extension (10") (optional)

Part #66001448

The manufacturer no longer makes this part, and there's no substitute part

Burner Orifice 66001166
#14A

Body diagram

Burner orifice

Part #66001166

The manufacturer no longer makes this part, and there's no substitute part

Air Duct Assembly (3") 66001464
#24

Body diagram

Air duct assembly (3")

Part #66001464

The manufacturer no longer makes this part, and there's no substitute part

Tube, Diffuser Dip (w/nipple) 66001419
#9

Body diagram

Tube, diffuser dip (w/nipple)

Part #66001419

The manufacturer no longer makes this part, and there's no substitute part

Kit, Roof Jack Vent (32") (non-illus) 66001450
#3A

Body diagram

Kit, roof jack vent (32") (non-illus)

Part #66001450

The manufacturer no longer makes this part, and there's no substitute part

Burner Orifice 66001433
#14C

Body diagram

Burner orifice

Part #66001433

The manufacturer no longer makes this part, and there's no substitute part

Vent Cap 66001447
#1

Body diagram

Vent cap

Part #66001447

The manufacturer no longer makes this part, and there's no substitute part

Most common symptoms to help you fix your water heaters

Choose a symptom to see related water heater repairs.

Main causes: lack of power, no gas supply, thermostat limit switch tripped, bad element, bad thermostat, gas valve failu…

Main causes: thermostats need adjustment, water heater capacity too low, bad heating element, thermostat failure, excess…

Main causes: loose water pipe fittings, leaky drain valve, bad temperature-pressure relief valve, leaky heating element,…

Main causes: water supply needs chlorine treatment, anode rod too reactive…

Main causes: broken heating element, thermostat failure, excessive tank sediment, tank size too small, burner valve asse…

Main causes: thermostat temperature set too high, thermostats need adjustment, faulty thermostat, shorted heating elemen…

Main causes: faulty pressure relief valve, water is overheating…

Effective articles & videos to help repair your water heaters

Use the advice and tips in these articles and videos to get the most out of your water heater.

Wiring schematic symbols explained video

Wiring schematic symbols explained video

Learn some of the most common symbols found in a wiring diagram and what they mean.…

Using a wiring schematic to trace a current video

Using a wiring schematic to trace a current video

Find out what’s wrong with your appliance by following a circuit.…

Easy DIY water heater repairs

Easy DIY water heater repairs

Read about some water heater repairs that you can easily do yourself.…