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Black+Decker CM2046S Thermal Coffeemaker vs Mainstays 12-Cup Drip Coffee Maker

Buy the Black+Decker if you want coffee that stays hot without a hot plate and you brew on a schedule. Its thermal carafe holds heat for up to two hours, and the programmable timer and brew-strength setting give you more control. The Mainstays is the simpler, lighter machine with a glass carafe and a keep-warm plate, and it has far more owner ratings. Reviewers of both describe basic, reliable drip brewing; the Black+Decker feels sturdier in stainless steel, while the Mainstays is mostly plastic.

  • Choose the Black+Decker if you set a brew time the night before and want the pot still hot at mid-morning without a scorched bottom.
  • Choose the Mainstays if you want a light, no-frills 12-cup pot with a glass carafe you can see through and rinse in seconds.

Prices

  • Black+Decker CM2046S Thermal Coffeemaker: $62.99 at Walmart (checked today)
  • Mainstays 12-Cup Drip Coffee Maker: $14.00 at Mercari (last seen Nov 5)
  • Difference: the Mainstays 12-Cup Drip Coffee Maker is $48.99 cheaper than the Black+Decker CM2046S Thermal Coffeemaker at the latest prices (Nov 5 and Nov 8)
Black+Decker
Black+Decker 12-Cup Thermal Programmable Coffeemaker

Black+Decker CM2046S Thermal Coffeemaker

Black+Decker 12-Cup Thermal Programmable Coffeemaker

4.4(2,252 ratings)
$62.99at WalmartVerified
See all prices and details
Visit Walmart
Pros
  • Coffee stays 154°F or hotter for up to two hours
  • Programmable delay timer for morning brewing
  • Brew-strength selector for a stronger pot
  • Stainless housing and vacuum carafe feel solid
  • Fresh-brew timer shows minutes since brewing
Cons
  • Tall at 14.5 in; needs clearance under cabinets
  • Carafe and parts are not dishwasher safe
  • Heavier and wider than a basic plastic model
  • No pod compatibility
Mainstays
Mainstays 12-Cup Drip Coffee Maker

Mainstays 12-Cup Drip Coffee Maker

4.5(12,521 ratings)
$14.00at MercariObserved Nov 5, 2026, 4:45 PM
See all prices and details
Visit Mercari
Pros
  • Compact footprint fits tight counters
  • Glass carafe shows how much is left
  • Removable filter basket is easy to rinse
  • Simple on/off operation with indicator light
  • Very large base of owner ratings
Cons
  • No timer or programmable brewing
  • Keep-warm plate can stew coffee over time
  • Plastic housing feels less durable
  • No brew-strength control

What separates them

Black+Decker CM2046S Thermal CoffeemakerMainstays 12-Cup Drip Coffee Maker
Carafe4-layer vacuum thermal carafe, no hot plateGlass carafe on an auto keep-warm plate
ProgrammingDelay timer plus fresh-brew timer on LCDNo timer; on/off only
Brew strength controlSelectable stronger brewNone
HousingStainless steel, 7.38 lbPlastic, about 3 lb
Footprint9.4 in wide, 14.5 in tall5.28 in wide, 9.15 in tall
CleaningCarafe and basket hand-wash; not dishwasher safeRemovable filter basket, glass carafe
Owner feedback volume4.4 from about 2,250 ratings4.5 from about 12,500 ratings
Sneak-a-cupYes, pour mid-brewNot stated

Price history

$62.99$14.00
Oct 31Nov 9
  • Black+Decker CM2046S Thermal Coffeemaker: lowest $62.99 on Oct 31 at Walmart.
  • Mainstays 12-Cup Drip Coffee Maker: lowest $14.00 on Nov 5 at Mercari; $24.86 on Nov 9.

Prices at every store

Black+Decker CM2046S Thermal Coffeemaker

  • WalmartNew

    In stockSold by Spectrum Brands HPCReturns: Sold by a Walmart Marketplace seller; returns go to the seller under the seller's returns policy.

    $62.99Free shippingVerified
    Visit Walmart
  • AmazonNew

    Availability unknown

    As an Amazon Associate, Deal.ai earns from qualifying purchases.

    $62.99Observed Oct 31, 2026, 2:05 AM
    Visit Amazon
  • eBayNew

    Availability unknownSold by t-hunt-4522 (99.3% positive, 2,100 ratings)Returns: Set by the eBay seller; the eBay Money Back Guarantee covers an item that doesn't arrive or isn't as described.

    $49.99+ $13.58 shippingVerified
    Visit eBay
  • WayfairNew

    Availability unknown

    $67.99Observed Oct 31, 2026, 2:05 AM
    Visit Wayfair

Also available at

  • WalmartCheck price at Walmart

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All 5 stores and price history →

Mainstays 12-Cup Drip Coffee Maker

  • WalmartNew

    In stock

    $16.88Verified
    Visit Walmart
  • MercariNew

    Availability unknown

    $14.00Observed Nov 5, 2026, 4:45 PM
    Visit Mercari
  • eBayNew

    Availability unknownSold by bs_4383 (100% positive, 127 ratings)Ships from Sri Lanka · duties may applyReturns: Set by the eBay seller; the eBay Money Back Guarantee covers an item that doesn't arrive or isn't as described.

    $14.99Free shippingVerified
    Visit eBay
  • PoshmarkNew

    Availability unknown

    $15.00Observed Nov 2, 2026, 6:43 PM
    Visit Poshmark

Also available at

  • WalmartCheck price at Walmart
  • eBayCheck price at eBay

Store links may earn us a commission.

All 4 stores and price history →

Specs compared

SpecBlack+Decker CM2046S Thermal CoffeemakerMainstays 12-Cup Drip Coffee Maker
MaterialStainless SteelPlastic
FeaturesProgrammableDrip Tray, Display
Height14.5 in9.15 in
ColorSilverWhite
CapacityMultiple CupsMultiple Cups
Carafe CapacityWith Thermal Carafe, 12 cups12 cups
Water Tank Size60 fl. oz.60 oz
Brew StyleDripDrip
Brewing SystemNot Pod CompatibleFilter Coffee Machine
Brew StrengthBrew Strength SelectorMedium Roast Type
Brew SettingsOptimal water temperaturesAdjustable Coffee Spouts, Adjustable Amount of …
TypeDrip coffee makerDrip coffee maker, Filter Coffee Machine
Show all 40 specsShow fewer specs
SpecBlack+Decker CM2046S Thermal CoffeemakerMainstays 12-Cup Drip Coffee Maker
Housing MaterialStainless SteelPlastic
SubtypeAutomaticAutomatic
Depth9 in8.10 Inches
Width9.4 in5.28 in
UseHomeHome
Carafe MaterialThermal, 4-layer vacuum sealGlass
Filter TypeBasketRemovable Filter Basket
Number of cups12—
Weight7.38 lb—
Model

What reviewers say

Black+Decker CM2046S Thermal Coffeemaker

  • 4.4 / 52,252 ratings

Owners rate it well overall and like the thermal carafe and programmability for the price. Common complaints center on heat retention over time and hand washing.

What people mention
  • Heat retentionMixedOwners say the carafe keeps coffee hot for an hour or two but cools faster than the two-hour claim suggests.
  • Ease of usePraisedReviewers find the digital controls and delay timer simple to set.
  • CleaningCriticisedOwners dislike that the carafe and filter basket must be washed by hand.
  • Brew strengthPraisedThe strong-brew option is called out for making a fuller cup.

Mainstays 12-Cup Drip Coffee Maker

  • 4.5 / 512,521 ratings

With 4.5 out of 5 from 12,521 ratings, buyers mostly treat this as a cheap, reliable pot that does the job. Complaints center on basic build and coffee that turns bitter on the warming plate.

What people mention
  • ValuePraisedBuyers say it delivers a full pot for very little money.
  • Ease of usePraisedOwners describe setup and daily brewing as simple.
  • CleaningPraisedThe removable filter basket makes cleanup quick.
  • Build qualityCriticisedSome owners find the plastic housing and glass carafe flimsy.

Questions and answers

Which keeps coffee hot longer?
The Black+Decker. Its vacuum thermal carafe holds coffee at 154°F or hotter for up to two hours. The Mainstays relies on a warming plate, which keeps the pot hot but gradually cooks the flavor.
Which is better for waking up to brewed coffee?
The Black+Decker. It has a delay timer, so you can load it the night before and wake to a full pot. The Mainstays has no timer and must be started by hand.
Is the Black+Decker worth stepping up to?
Yes if you want scheduled brewing, a thermal carafe or a stronger brew setting. If you just want a pot of drip coffee and a small footprint, the Mainstays covers that.
Which is easier to clean?
The Mainstays. Its glass carafe and removable basket rinse quickly and you can see through the carafe. The Black+Decker's thermal carafe and parts are hand-wash only.
Which fits a small kitchen better?
The Mainstays. It is about 5.3 in wide and 9.2 in tall. The Black+Decker is 9.4 in wide and 14.5 in tall, so check clearance under your cabinets.
Do either take pods?
No. Both are drip machines that brew into a 12-cup carafe from ground coffee in a basket filter. Neither is pod compatible.

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CM2046S
—
BrandBLACK+DECKER—
Has nrtl listing certificationY—
Commercial UseNo—
Typical Userscoffee lovers—
Removable Drip TrayYes—
Dishwasher SafeNo—
Removable Water TankYes—
actual_color—White
multipack_quantity—1
size—8.1" x 5.28" x 9.15"
Electric—Yes
Power Type—Electrical
Wattage—900 W
Grind System—Blade
Brew Time—5 min
Finish—White
App Control—No
Capacity (cups) (Cups)—12