BLACK+DECKER CM2046S: problems, parts and running costs
Checked: 2026-10-12
Summary
The CM2046S is a 12-cup programmable drip machine built around a stainless-steel thermal carafe, and its one measured weakness is that carafe: Consumer Reports rated its handling below average for dripping, balance when full and emptying [3]. Running costs are coffee, paper filters if you use them and descaling solution, with no pod lock-in [1][5]. It is a solid buy at $60 or less and fair value up to $80 — BLACK+DECKER lists it at $77.99 direct [2].
Common problems and fixes
- Carafe handling below average — Consumer Reports found the carafe not especially easy to use, citing handle comfort, dripping, balance when full and difficulty emptying [3]. No fix is documented; buyers sensitive to carafe ergonomics should examine the carafe in person or pick another model.
- No removable reservoir — water is filled directly in the machine [3]. No fix; fill carefully.
- 2-hour heat retention is unverified — the manufacturer claims the thermal carafe keeps coffee hot up to 2 hours, but no independent instrumented test of heat retention over time was found for this exact model [1][2].
- Replacement parts availability unverified — parts supply through Spectrum Brands service channels is unverified for this exact model; the manual references a service website for parts and support [4][5].
Parts and consumables
Yearly running cost
Not enough data. No filter, descaler or replacement-part prices are recorded in the research files, so no yearly total can be computed. The recurring costs are coffee, replacement filters if you use paper ones, and descaling solution; there is no pod lock-in or subscription [1][5].
When it is a good buy
- At $60 or less it is solid value: thermal carafe, programmable timer, brew-strength control and Consumer Reports-verified brew temperature [2][3].
- Between $61 and $80 it is fair value; BLACK+DECKER lists the machine at $77.99 direct (blackanddeckerappliances.com, 2026-10), and Consumer Reports listed it from $53.99 at its 2020 test [2][3].
- From $81 to $100 it is weak value, with better-tested alternatives in that range; above $100 it is poor value for this feature set [3].
Named alternative: no specific alternative models are named in the research; the sources point only to other thermal-carafe programmable drip makers with stronger carafe designs in the $61-80 range [3].