Kenmore 153330270 gas water heater Parts

For Kenmore gas water heater model 153330270, the year is determined by reading the serial number on the rating label and decoding it using the manufacturer’s date-code format. We use the decoding guidance and label-location details in the owner's manual to identify the correct serial number and interpret the date portion.

Where to find the serial number

Look for the rating label on the outside of the tank (commonly on the side near the gas control valve area). On most units, the label includes both a model number and a serial number.

Use these quick checks:

• Confirm the model number reads 153330270.
• Write the serial number exactly as shown (include letters).
• Clean the label gently if it is dusty so characters are readable.
• Take a photo before you start decoding.

How to decode the year (what to look for)

Kenmore-branded water heaters were built by different manufacturers over the years, so the serial number format varies. Most formats encode year plus week or month.

Common patterns you may see:

• YYWW at the start (year, then week of year)
• MMYY or MMYYYY at the start (month, then year)
• Letter-based month/year codes (letters represent month and year; the year code can repeat on a cycle)

Quick pattern guide

Serial number starts with	Usually means	Example interpretation
2 digits + 2 digits	Year + week	12 20 = 2012, week 20
4 digits	Month + year	0519 = May 2019
Letters included early	Letter-coded date	Use the letter key for month/year

Why it matters

Knowing the manufacture year helps us match the right replacement parts and plan maintenance. For example, age can influence whether you focus on preventive items like an anode rod 100109594 or safety components like a water heater temperature and pressure relief valve 100108279.

Helpful tips while you’re checking age

• If your home has a closed plumbing system, thermal expansion can raise pressure; the manual notes this can contribute to premature tank leakage.
• Inspect venting and burner flame at least annually for safe operation.
• If you are unsure about safe operation, stop and have a qualified technician inspect the heater.

Last updated: February 2026

Your Kenmore gas water heater model number is printed on the rating plate (data sticker) on the tank. For model 153330270, use the full model number exactly as shown on that plate when looking up parts, diagrams, and the correct Use and Care information in the owner's manual.

Where to find the model number on model 153330270

On this Kenmore unit, the model number is on the rating plate on the tank (the manual labels this as the “rating plate”). Once you locate it, copy the model number and serial number exactly.

Common places to check:

• The outside of the tank near the gas control valve/thermostat area
• Behind or near the outer door or burner access area
• On the side of the tank near the plumbing connections
• Near the draft hood and venting area (upper portion of the tank)

What to write down (and what to ignore)

For parts and service lookups, these are the fields that matter most:

• Model number: 153330270
• Serial number: used to identify production details
• Fuel type: natural gas vs. other (helps match pilot and burner parts)

You can usually ignore for basic parts lookup:

• Long certification text blocks
• Most code references and test standards
• Marketing terms like “Ultra Low NOx” (helpful context, but not the identifier)

Quick checklist for an exact match

Small differences can point to a different tank size or parts list, so we recommend:

• Match every digit (no spaces, no missing zeros)
• Use the model number, not just the brand name “Kenmore”
• Confirm you are reading the rating plate, not a warning label

Item	What it’s used for	Example on your heater
Model number	Correct parts list and diagrams	153330270
Serial number	Production tracking	Varies
Rating plate	Location of the official ID	Tank label

Why it matters

Using the exact model number ensures you get the right replacement parts for your Kenmore 153330270, such as the correct pilot assembly, draft hood, or temperature and pressure relief valve.

Last updated: February 2026

The most common gas water heater problem is ignition related: the pilot will not light or will not stay lit, so the burner never ignites and you get little or no hot water. On Kenmore model 153330270, the manual troubleshooting points first to pilot/lighting sequence, gas supply, drafts, and combustion air.

Most common symptoms we see

• Pilot will not light or goes out shortly after lighting
• Burner will not ignite even though the pilot is lit
• Water is lukewarm or you run out of hot water quickly
• Yellow, lazy burner flame (poor combustion)
• Rumbling or popping sounds (sediment or lime in the tank)
• Water around the base that looks like a leak but is actually condensation

Quick checks that solve many “no hot water” calls

Follow the lighting and safety steps in the owner's manual. Then check these basics:

• Thermostat setting: If set too low, recovery and hot water output drop.
• Gas supply: Confirm the gas shutoff valve is open and gas is available.
• Drafts and ventilation: Cold drafts, a confined space, or blocked combustion air can extinguish the pilot.
• Dirty pilot line/orifice: A clogged pilot line/orifice can prevent lighting or stable flame.
• Sediment buildup: Sediment can reduce efficiency and cause noise; it also increases operating costs.

Common causes and what they usually point to

Symptom	Common cause	Typical next step
Pilot will not stay lit	Drafts, air in gas line, dirty pilot/orifice, loose connection	Recheck lighting steps; inspect/clean pilot path; correct drafts
Burner will not ignite	Pilot not lit, no gas, clogged burner line, bad thermopile/thermostat	Verify pilot and gas; inspect burner supply; test/replace failed component
“Tank leak” look-alike	Condensation during cold incoming water	Wait 1 to 2 hours after heating; confirm source before repairing

Parts that commonly relate to these problems

If troubleshooting points to a failed ignition component, the model-specific part most often involved is the water heater pilot assembly 100093972. For odor complaints tied to water chemistry, the tank’s corrosion protection component is the anode rod 100109594.

Why it matters

Ignition and combustion-air problems can stop hot water completely and can also cause poor flame quality (yellow, lazy flame), higher gas use, and nuisance shutdowns. Addressing ventilation, gas supply, and pilot components restores safe, consistent heating.

Last updated: February 2026

On the Kenmore 153330270 gas water heater, the main parts include the venting components (vent pipe and draft hood), water connections (cold inlet, dip tube, hot outlet), safety devices (T&P relief valve), and the gas control and burner system (gas control valve/thermostat, pilot, and burner door assembly). See the owner's manual for the full labeled diagram.

Common gas water heater parts (what they do)

• Draft hood and vent pipe: Direct combustion gases into the flue for safe venting.
• Gas control valve/thermostat: Regulates gas flow and water temperature.
• Pilot and burner door assemblies: Ignite and burn gas to heat the tank.
• Anode rod: Protects the tank from corrosion.
• Dip tube: Sends incoming cold water to the bottom of the tank for efficient heating.
• Drain valve: Lets you drain the tank for flushing and service.
• Temperature and pressure (T&P) relief valve: Safety valve that opens if temperature or pressure gets too high.

Parts you can match to this Kenmore 153330270

Here are several key components called out in the parts list for this model:

Part on the water heater	What it’s for	Example part on this model
T&P relief valve	Overpressure/overtemperature safety	Water heater temperature and pressure relief valve 100108279
Pilot assembly	Keeps/starts burner ignition	Water heater pilot assembly 100093972
Draft hood	Helps vent flue gases properly	Draft hood 100111362
Drain valve	Draining and flushing the tank	Water heater drain valve 100108361
Anode rod	Corrosion protection	Anode rod 100109594

Why it matters

Knowing the major parts helps you troubleshoot symptoms (no hot water, pilot won’t stay lit, leaking at the valve) and order the correct replacement part for safe, reliable operation.

Last updated: February 2026

A 50-gallon gas water heater like the Kenmore 153330270 typically runs about $600 to $1,300+ for the tank, depending on efficiency, venting type, and warranty length. Installed cost commonly lands around $1,000 to $3,100+ once labor, fittings, venting, and code-required upgrades are included. For model-specific installation requirements, use the owner's manual.

What changes the price the most

• Venting type: atmospheric vent units cost less; power-vent or direct-vent units cost more
• Efficiency rating: higher efficiency usually increases upfront cost
• Warranty length: longer warranties typically mean a higher price tier
• Gas line and shutoff updates: new connector, sediment trap, or valve can add cost
• Venting and combustion air work: resizing vent pipe or adding make-up air can add labor
• Water piping changes: new shutoff valve, flex connectors, or dielectric fittings

Typical cost ranges (unit vs. installed)

What you’re paying for	Typical range	What’s usually included
Water heater unit only	$600 to $1,300+	Tank, burner system, basic controls
Installed total	$1,000 to $3,100+	Removal, haul-away, labor, connectors, venting adjustments, start-up

What to check before you buy

• Capacity and fit: confirm you need a 50-gallon tall unit (the 153330270 is a 50-gallon tall model)
• Diameter and height clearance: measure the space and compare to the dimensions listed in the owner's manual
• Venting size and condition: confirm the vent connector and chimney/vent system are compatible
• Local requirements: expansion tank, drain pan, seismic strapping, or shutoff updates may be needed

Why it matters

A “cheap” tank can become expensive if your installation needs venting changes, combustion air improvements, or plumbing upgrades. Planning for the installed total helps avoid surprises and keeps your gas water heater operating safely and efficiently.

Last updated: February 2026