Is entkalker profitable to sell on Amazon Germany?

The niche generates €193K/yr across 22 tracked products. 3 of 4 products launched in the last 360 days are still selling. 90-day search growth is -22.1%. Flapen's verdict: Skip it (41/100).

How competitive is the entkalker niche?

13 brands and 152 sellers compete. The top 5 products take 64% of clicks and top 5 brands hold 84% of demand.

What do buyers complain about in entkalker?

Top complaints mined from reviews: Preis-Leistungs-Verhältnis, Löslichkeit, Auslaufsicher. The return rate is 0.1%.

When does demand for entkalker peak?

Demand peaks in Jan–Nov; the busiest month runs 1.8× the quietest.

What does it cost to enter the entkalker niche?

Listings span €1.63–€17.90; the average listing price is €9.36 (sweet spot $15–$100). The average incumbent carries 21,014 reviews — the moat a new listing must climb.

entkalker

Skip it

Soft demand (-22.1% this quarter) — this niche doesn't clear our bar today.

Returns

Incredible0.1%

return rate — above 5% kills the launch gate

Conversion

Great10.9%

search→purchase rate — share of searches ending in a sale

Market size

Okay€193K

€193K/yr · 188K searches

Competition

Okay64%

top-5 click share — leaders hold, buyers still browse

Brand share

Okay84%

top-5 brand share — brands hold most of the demand

Avg price

Okay€9.36

avg listing price — sweet spot $15–$100

Quality gap

Bad4.7★

avg incumbent rating — lower means beatable quality

Price range

Bad€1.63–€17.90

cheapest to priciest tracked listing — scored on the share inside $15–$100

Review moat

Bad21,014.27

avg incumbent reviews — the moat a new listing must climb

Growth

Bad-22.1%

90-day search growth — must beat 0% to launch

According to Flapen's Amazon Germany niche tracking, entkalker is a €193K/yr Amazon Germany market (188K searches/yr). The top 5 brands hold 84% of demand. Demand peaks in Jan–Nov. Verdict: Skip it — 41/100.

Data updated Jul 10, 2026 · scored weekly · How we score niches

entkalker market data

Units sold / yr: 20K–25K; avg 500–750/product
Revenue / yr: €187K–€234K; units × avg price
Conversion rate: 10.9%
Avg BSR: #28
Page quality: 0%
Prime: 86%
Sponsored: 91%
Out of stock: 0.9%
Avg brand age: 77 months
Avg seller age: 185 days

Competition & brand share

The top 5 products take 64% of clicks — established leaders, but buyers still shop beyond them.

Brands

13 falling

Sellers

152

Top-5 brand share

84%

Top 20: 100%

Top-5 click share

64%

Top 20: 98%

Open market

12%

Maxxi Clean28%
HEITMANN pure24%
Durgol15%
De'Longhi10%
Chemical Ecosolutions7%
BMUT4%
Open — no brand owns it (7 brands, 12%)

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — -22.1% search growth over the last 90 days.

Peak months: Jan, Nov · busiest ÷ quietest = 1.8×

Open Trend

Top entkalker search terms

entkalker163K/yr -23.0%9.5% conv.
universal entkalker6K/yr -20.3%11.4% conv.
descaler8K/yr -27.0%5.1% conv.
universal entkalker kaffeevollautomat5K/yr -2.6%16.1% conv.
maschinen entkalker3K/yr +9.2%6.8% conv.
entkalker flüssig4K/yr -22.5%9.3% conv.

All search terms

Top entkalker products on Amazon

Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.

Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 22 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

HEITMANN pure Reine Citronensäure 500 ml | Effektiver Kalkentferner in Küche & Bad | 100% natürliche Zitronensäure | Entkalker für Kaffeevollautomat Wasserkocher & Waschmaschine | Lebensmittelsauber

HEITMANN pure€2.444.7★579 rev

10 Liter Universal Entkalker für Ihren Kaffeevollautomaten im Kanister | Für alle bekannten Marken geeignet | Kalklöser für extra gründliche Reinigung

Maxxi Clean€17.174.7★232 rev

durgol Universal Schnell-Entkalker für Küchengeräte (750ml) - Entkalker für Wasserkocher Wasserhahn Töpfe Spülkasten Waschmaschinen Dampfgarer etc. - Anti Kalklöser flüssig - Flüssigentkalker

Durgol€4.704.7★2,257 rev

Maxxi Clean | 2x 750 ml Universal Entkalker Konzentrat für Kaffeemaschinen & Kaffeevollautomaten aller Typen | für 12 Entkalkungsvorgänge | universelle Gerätereinigung gegen Kalk und Verschmutzungen

Maxxi Clean€9.734.6★10,856 rev

DeLonghi EcoDecalk Entkalker DLSC500 5 Entkalkungs Dosen Kaffee Maschinen Entkalker Kaffee Maschinen Wartungs Zubehör Pflanzliche Inhaltsstoffe Flasche mit 5 Dosen 500ml

De'Longhi€7.234.8★165,641 rev

Newest

by launch date

5L Universal Entkalker für Kaffeevollautomaten & Kaffeemaschine & mehr universell einsetzbar für alle Marken 5 Liter Kanister Konzentrat

BMUT€13.1765 rev

7mo ago

WoldoClean 3in1 Entkalkungstabletten Kaffeevollautomat 65 Stück Entkalker

WoldoClean€13.556,459 rev

8mo ago

HEITMANN Maschinen-Entkalker 3in1 175 g | Entfernt Kalk Schmutz & Gerüche | Maschinenreiniger geeignet für Waschmaschine & Spülmaschine | Schont Dichtungen & Heizstäbe | Entkalker mit Zitronensäure

HEITMANN€2.1258 rev

10mo ago

HEITMANN pure€2.44579 rev

10mo ago

Lab4House | Anti-Kalk 1000 ml Spray | Extra Starker Profi-Entkalker für Bad Dusche & Küche | Entfernt Kalk Rost & Urinstein

Lab4House€17.9062 rev

1y ago

What buyers say about entkalker

What buyers praise and complain about, mined from review topics.

What buyers love

Qualität insgesamt19%

“Super Produkt”

Preis-Leistungs-Verhältnis18%

“Bestpreis”

beworben Vs Tatsächliches Produkt14%

“Entspricht den Erwartungen”

Einfache Reinigung11%

“Reinigt”

Effizienz9%

“effizient”

Benutzerfreundlichkeit7%

“Alles easy”

Funktionalität insgesamt2%

“Produkt überzeugt auf ganzer Linie”

Geruch2%

“stinkt beim aufheizen nicht wie Essig”

Gesamtgröße2%

“Passt”

Umweltfreundlichkeit1%

“EcoDecalk”

What buyers complain about

Preis-Leistungs-Verhältnis29%

“Der Preis hier ist aber heftig”

Löslichkeit5%

“Löst sich schlecht auf”

Auslaufsicher5%

“Flaschen undicht”

Funktionalität insgesamt5%

“Leider absolut ungeeignet”

Einfache Reinigung4%

“Ich habe den Reiniger sofort weggeschüttet, da mir das Risiko viel zu groß war, dass diese Schimmelfäden die Leitungen meiner Maschine verstopfen oder Rückstände die Gesundheit gefährden”

Qualität insgesamt3%

“Es gibt bessere Produkte, ich bin enttäuscht”

Geruch3%

“riecht schrecklich”

Benutzerfreundlichkeit2%

“Nervig und unpraktisch”

Farbe2%

“Die Tabs färben blau”

Rückstand2%

“hinterlassen dementsprechend Rückstande.”

Top return reasons

Auslaufsicher23%

Gesamtgröße17%

Funktionalität insgesamt16%

Kompatibilität – insgesamt14%

Preis-Leistungs-Verhältnis6%

beworben Vs Tatsächliches Produkt5%

Produktzustand2%

Wartung und Reparatur1%

Mechanismus probleme1%

Wasserbeständigkeit1%

Common questions

Is entkalker profitable to sell on Amazon Germany?: The niche generates €193K/yr across 22 tracked products. 3 of 4 products launched in the last 360 days are still selling. 90-day search growth is -22.1%. Flapen's verdict: Skip it (41/100).
How competitive is the entkalker niche?: 13 brands and 152 sellers compete. The top 5 products take 64% of clicks and top 5 brands hold 84% of demand.
What do buyers complain about in entkalker?: Top complaints mined from reviews: Preis-Leistungs-Verhältnis, Löslichkeit, Auslaufsicher. The return rate is 0.1%.
When does demand for entkalker peak?: Demand peaks in Jan–Nov; the busiest month runs 1.8× the quietest.
What does it cost to enter the entkalker niche?: Listings span €1.63–€17.90; the average listing price is €9.36 (sweet spot $15–$100). The average incumbent carries 21,014 reviews — the moat a new listing must climb.