Kenmore 79042749406 electric cooktop Parts

Most electric cooktops are designed for a 240/208-volt supply, not strictly “240V only.” For Kenmore model 79042749406, the installation requirements call for a single-phase 3-wire or 4-wire 120/240V or 120/208V, 60 Hz circuit, so it can be installed on either supply when wired correctly per the 79042749406 installation guide.

What voltage you should expect in a home

Electric cooktops typically use two hot legs (L1 and L2) plus ground, and sometimes a neutral depending on the wiring method.

• 240V is common in many U.S. homes (nominal).
• 208V is common in many condos and apartments (often from 3-phase service).
• A cooktop rated for 240/208V is built to operate on either.
• Heating performance can be slightly lower on 208V than on 240V.

What the 79042749406 installation instructions specify

The installation instructions for this cooktop call out these electrical requirements:

• Single-phase 3-wire or 4-wire connection
• 120/240V or 120/208V AC, 60 Hz
• On a separate circuit
• 40A time-delay fuse or circuit breaker recommended
• Power must be shut off while making line connections

Quick comparison: 208V vs 240V

Supply type	Where it’s common	What you may notice
240V	Many single-family homes	Normal heat-up performance
208V	Many apartments/condos	Slightly slower boiling and recovery

Why it matters

Matching the cooktop to the correct electrical supply and breaker size helps prevent nuisance breaker trips, overheating wiring, and poor burner performance. It also ensures the cooktop is properly grounded and code-compliant.

Last updated: January 2026

The “best” electric cooktop brand is the one that fits your cooking style, cutout size, and service needs; Kenmore electric cooktops like model 79042749406 are a solid choice when you want straightforward radiant heating and widely available replacement parts. Use the 79042749406 owner’s manual to match features and safe use guidelines.

How we recommend choosing a “best” brand

• Fit first: confirm your countertop cutout and cooktop size match (30-inch vs 36-inch classes).
• Heating style: radiant elements are simple and consistent; look for dual elements if you use multiple pan sizes.
• Controls and usability: smooth, predictable knob control matters more than brand name for daily cooking.
• Parts availability: brands with common elements, switches, and indicator lights are easier to maintain.
• Service support: choose a brand with local technicians familiar with electric cooktops.

Quick comparison: what “best” usually means

What you care about	What to look for	Why it helps
Easy repairs	Common surface elements and switches	Faster, lower-cost fixes
Flexible cooking	Dual radiant element	Better match for small and large pans
Kitchen fit	Correct cutout dimensions	Avoids countertop modifications
Safety	Proper grounding and correct circuit	Reduces nuisance trips and overheating

Why it matters (especially for electric cooktops)

Electric cooktops are very dependent on correct installation and electrical supply. For example, these cooktops typically require a dedicated 120/240V or 120/208V circuit and proper grounding; installation details like minimum cabinet clearances also affect safety and performance. The brand you choose should be one you can install correctly and maintain confidently.

If you already own Kenmore 79042749406

If performance issues are pushing you to consider a different brand, it is often cheaper to repair common wear items first:

• A burner not heating or heating unevenly can point to a failed surface element such as the range dual radiant surface element 316555800.
• A burner that will not adjust properly can point to a control issue such as the range surface element control switch 318293824.
• A “hot surface” or indicator problem can involve the cooktop indicator light 318044830.

Last updated: January 2026

Most electric cooktops are built to fit standard cabinet widths, with 30-inch and 36-inch models being the most common. For the Kenmore 79042749406 electric cooktop, the installation guide shows a 30-inch cooktop with a 28 1/2 to 29-inch countertop cutout width range.

Common “standard” cooktop sizes

In most kitchens, “standard size” refers to the cooktop’s nominal width and the matching cabinet opening.

• 30-inch cooktop: most common in many homes
• 36-inch cooktop: common in larger kitchens
• 15 to 24-inch cooktops: compact or apartment layouts
• 45 to 48-inch cooktops: specialty, high-capacity layouts

Model-specific dimensions that matter for fit (79042749406)

For a proper fit, we focus on the cutout (the hole in the countertop) and required clearances, not just the advertised width.

Measurement type	30-inch ceramic cooktop spec shown in guide	Why it matters
Nominal cooktop width	30 in	Helps match cabinet size
Cutout width range	28 1/2 to 29 in	Determines if it drops into your countertop opening
Cutout depth range	19 5/8 to 20 1/4 in	Prevents front-to-back gaps or binding
Minimum overhead clearance	30 in (unprotected)	Reduces heat damage risk to cabinets

For the exact diagram and all measurements, use the installation guide.

Quick measuring checklist before you buy or replace

• Measure the existing countertop cutout width and depth (not the glass top).
• Confirm there is about 2 inches of space below for the electrical cable and junction box clearance.
• Check overhead cabinet depth and clearance requirements.
• Verify the cooktop is on a 240/208V, 60 Hz supply (typical for electric cooktops).
• If you are replacing a burner that is not heating, match the cooktop size first, then diagnose the element or switch.

Why it matters

A cooktop can be labeled “30-inch,” but the cutout dimensions and clearances determine whether it installs safely and sits flat. Getting the cutout size right prevents countertop damage, gaps, and overheating issues.

Last updated: January 2026

Replacing the “stove top” on a Kenmore 79042749406 electric cooktop usually means replacing either a failed surface element or the entire glass cooktop main top; parts commonly run from about $90 to $450+, and professional labor often adds $200 to $600+ depending on access and wiring.

What you are replacing (and typical cost)

Most price differences come down to whether you need a single heating component or the full top assembly.

• Single burner not heating: often a surface element or control switch
• Cracked or badly damaged glass: typically the main top assembly
• Intermittent heat: can be a switch, wiring harness, or element

Replacement type	What it fixes	Typical parts cost	Typical total with labor
Surface element	One burner will not heat or heats unevenly	$80 to $160	$300 to $700
Control switch	Burner stuck on high, won’t adjust, or won’t turn on	$70 to $120	$250 to $600
Main top assembly (glass top)	Cracked glass, severe scratches, damaged frame	$400 to $500+	$650 to $1,200+

Model-specific parts that commonly drive the price

These are examples of high-impact parts for the Kenmore 79042749406 that can affect your replacement cost:

• Cooktop main top assembly 318282591 (full top replacement)
• Cooktop main top assembly (bisque) 318282592 (color-specific full top replacement)
• Range dual radiant surface element 316555800 (dual radiant burner)
• Range surface element control switch 318293824 (burner control)

What to check before you buy parts

We recommend confirming the failure first so you do not replace the wrong component.

• Verify the breaker is on and the cooktop has power
• If one burner fails, suspect the surface element or control switch
• Look for burned terminals or damaged wiring at the element and switch
• If the glass is broken, stop using the cooktop and plan on a main top replacement
• Confirm cutout and clearance requirements if the cooktop is being removed and reinstalled (30-inch models have specific cutout ranges)

For wiring, clearances, and cutout dimensions, use the 79042749406 installation guide.

Why it matters

A cooktop “top” replacement can mean a simple burner repair or a full glass assembly swap. Identifying the correct repair keeps costs down, avoids repeat service calls, and helps ensure safe electrical connections.

Last updated: January 2026