Accumulator Tank
MaybeThe average product has only 300 reviews. But shoppers spend an estimated $164K a year here, so Accumulator Tank is a Maybe.
- Flapen Score
- 54 / 100Top 26% of 7,287 Automotive niches · +5 vs the category median of 4954
- Market size
- $164K/yr43K searches / yr
- 90-day growth
- +35.3%search demand this quarter
- Competition
- 55%top-5 click share · 17 brands · 112 sellers
Flapen Score
Accumulator Tank against its category
The dotted line is the Automotive average. Past it, Accumulator Tank is stronger. Inside it, weaker.
Market
The Accumulator Tank market on Amazon at a glance
Shoppers on Amazon United States searched for Accumulator Tank 43K times last year and spent an estimated $164K. The top 5 brands take 71% of clicks. Demand peaks in May. Flapen scores it 54 out of 100, a Maybe.
01 · Demand
An estimated 5.2% of those searches ended in a purchase.
Shoppers searched for this 43K times in the last 12 months. That counts every search on Amazon United States for this niche's terms. An estimated 5.2% of those searches ended in a purchase. Searches in the last 90 days moved +35.3% against the 90 days before. Searches, conversion and average price together put the market at an estimated $164K a year.
- Searches, last 12 months
- 43K
- Growth, 90 days vs prior 90
- +35.3%
- Conversion, latest week
- 5.2%
- Market size, estimated
- $164Ka year
- Peak month
- May2.0× the quietest month
- Top search term
- accumulator tank22K searches a year
02 · Price
A sale here is worth $73.82.
Listings sell for $73.82 on average, from $20.84 to $225.88. Amazon reports units sold in ranges. This niche sold 2K to 3K a year. The average listing sells 100 to 250 of them. At $73.82 that is $7K to $18K a year per listing.
- Average price
- $73.82inside the $15 to $100 sweet spot
- Price range
- $20.84–$225.88
- Amazon United States median price
- $24.38across 115,062 niches
- Units sold a year
- 2K–3K
- Units per listing a year
- 100–250
- Revenue per listing a year
- $7K–$18K
- Returns
- 3.0%of orders · Amazon United States median 2.1%
03 · Entry bar
The bar here is low.
86% of listings pay for placement with sponsored ads. 95% ship with Prime. On an average day, 9.5% of listings are out of stock. The average listing ranks #642 within RV Parts & Accessories. It carries 300 reviews at 4.45 stars, so a new listing needs social proof before a better product.
- Sponsored listings
- 86%
- Prime listings
- 95%
- Out of stock, average day
- 9.5%
- Average rank
- #642in RV Parts & Accessories
- Average rating
- 4.45 starsAmazon United States average 4.42 stars
- Average reviews
- 300per listing
- Listings tracked
- 22
04 · Newcomers
3 of last year's 3 launches cleared the first-year sales bar.
3 products launched here in the last 12 months. 3 of them cleared the first-year sales bar, our mark for a successful launch. The brands on the shelf have sold for 64 months on average, so the names here are established.
- Launched, last 12 months
- 3
- Successful launches
- 3Amazon's first-year sales bar
- Average brand age
- 64 months
Products
Top Accumulator Tank products & what they sell for
The products selling here, as shoppers see them on Amazon. Shelf share and sales are our estimates.
Prices and ratings read from Amazon on Jul 11, 2026. The live listing can differ.
Top sellers
by estimated 90-day click share
2 Gallon Accumulator Expansion Tank With Wall Mount Bracket 1/2 Female NPT
- Price
- $64.42
- Rating
- 4.7/5
- Reviews
- 324
- Age
- 9y ago

CRESTWAVE 1.0L Pre-Pressurized Accumulator Tank 125PSI 1/2 MNPT Port Fitting Flow Control Inner Bladder Reduced Pump Cycling and Smooths Water Flow for RV Boat Travel Trailer Caravan
- Price
- $32.38
- Rating
- 4.2/5
- Reviews
- 40
- Age
- 1y ago

KENCIT Pre-Pressurized Accumulator Tank (0.75L 125PSI) Flow Control Inner Bladder Reduced Pump Cycling Suitable for RV Boat Travel Trailer Caravan.
- Price
- $25.00
- Rating
- 4.3/5
- Reviews
- 103
- Age
- 3y ago

SEAFLO 33-Series Water Pump and Accumulator Tank System - 12V DC 3.0 GPM 45 PSI 0.2 Gallon Tank - Reduces Cycling For Marine Boat RV Off-Grid Applications- 4-Year Warranty! CE & RoHS Certified
- Price
- $116.84
- Rating
- 4.7/5
- Reviews
- 332
- Age
- 9y ago

PENTAIR SHURFLO 182-200 Pre-Pressurized Accumulator Tank 125 PSI 24 oz
- Price
- $64.42
- Rating
- 4.6/5
- Reviews
- 1,705
- Age
- 19y ago
Trending
estimated 90-day click momentum
Potable Thermal Expansion Tank 1 Gallon 3/4 MNPT Connection Compact Design for Water Heater RV Marine Boat Off-Grid Systems Residential Plumbing & Solar Thermal
- Price
- $33.49
- Rating
- 4.7/5
- Reviews
- 54
- Age
- 7mo ago

Accumulator Tank Water Pump Flow Control with Internal Bladder - 125 PSI 27.04 oz (0.8 L) | Reduces Pump Cycling and Smooths Water Flow for Marine RV and Off-Grid Systems
- Price
- $25.20
- Rating
- 4.4/5
- Reviews
- 26
- Age
- 1y ago

WASSERMANN 12V RV Water Pump and Accumulator Tank System 4.0GPM 45PSI Self Priming Water Diaphragm Pump with 0.75L 10 PSI Pre-Pressurized Accumulator Tank Pressure Switch for Boat Garden RV Camping
- Price
- $89.32
- Rating
- 4.4/5
- Reviews
- 51
- Age
- 7mo ago

Pre-Pressurized Accumulator Tank 0.75L Volume 125 PSI Quiet Operation Stabilize Flow Extend Pump Life for RVs Marine and Off-Grid Systems (Black)
- Price
- $20.84
- Rating
- 4.2/5
- Reviews
- 4
- Age
- 1y ago

SEAFLO 55 Series 115V AC Water Pump & 2 Gallon Accumulator Tank System 5.0 GPM 60 PSI Five-Chamber Diaphragm Self-Priming Run Dry Capable NSF UL CE & RoHS Certified 4-Year Warranty
- Price
- $225.88
- Rating
- 4.1/5
- Reviews
- 8
- Age
- 10mo ago
Newest
by launch date
Potable Thermal Expansion Tank 1 Gallon 3/4 MNPT Connection Compact Design for Water Heater RV Marine Boat Off-Grid Systems Residential Plumbing & Solar Thermal
- Price
- $33.49
- Rating
- 4.7/5
- Reviews
- 54
- Age
- 7mo ago

WASSERMANN 12V RV Water Pump and Accumulator Tank System 4.0GPM 45PSI Self Priming Water Diaphragm Pump with 0.75L 10 PSI Pre-Pressurized Accumulator Tank Pressure Switch for Boat Garden RV Camping
- Price
- $89.32
- Rating
- 4.4/5
- Reviews
- 51
- Age
- 7mo ago

SEAFLO 55 Series 115V AC Water Pump & 2 Gallon Accumulator Tank System 5.0 GPM 60 PSI Five-Chamber Diaphragm Self-Priming Run Dry Capable NSF UL CE & RoHS Certified 4-Year Warranty
- Price
- $225.88
- Rating
- 4.1/5
- Reviews
- 8
- Age
- 10mo ago

Nilight RV Accumulator Tank 0.75L Max 125PSI Pre-Pressurized Water Accumulator Tank Control Inner Bladder with 1/2 MNPT Port Fitting Use with RV Water Pump Tank System for RV Boat Travel Trailer Home
- Price
- $24.86
- Rating
- 4.8/5
- Reviews
- 11
- Age
- 1y ago

Accumulator Tank Water Pump Flow Control with Internal Bladder - 125 PSI 27.04 oz (0.8 L) | Reduces Pump Cycling and Smooths Water Flow for Marine RV and Off-Grid Systems
- Price
- $25.20
- Rating
- 4.4/5
- Reviews
- 26
- Age
- 1y ago
Competition
Competition: brands, sellers & click share
The top 5 products take an estimated 55% of clicks. Leaders hold, but buyers still shop past them.
Brands
17 rising
Sellers
112
Est. top-5 brand share
71%
Top 20: 100%
Est. top-5 click share
55%
Top 20: 98%
Open market
23%
- Pro Water Parts21%
- SEAFLO19%
- CRESTWAVE12%
- KENCIT11%
- SHURFLO9%
- PRODEEZ6%
Demand
Accumulator Tank search demand
Weekly searches over the year, seasonality beneath. Pick a range.
Peak months: May · busiest ÷ quietest = 2.0×
Search terms
Top Accumulator Tank search terms shoppers use
The exact words shoppers type, with estimated yearly volume, growth, and conversion.
- accumulator tank22K/yr
- rv accumulator tank7K/yr
- seaflo accumulator tank5K/yr
- rv water accumulator tank4K/yr
- rv pressure tank3K/yr
- water accumulator tank3K/yr
Reviews and returns
What reviews say buyers love and hate about Accumulator Tank
We read the reviews and the return reasons for every product selling here.
“Dead after one use”
Every topic
Every topic buyers talk about, one row each.
Red shows the share of negative reviews and green the share of positive reviews, biggest topic first. Open a row to read what they wrote.
16 topics
Keep looking
Related niches
Niches in the same category that score near this one. Research these next.
Best Flapen score
The highest-scoring niches we track right now, across every category.
FAQ
Common Accumulator Tank questions
Answered from the same tracked data.
Figures on this page are estimates modeled from public Amazon pages and third-party keyword data. Amazon does not supply them, and no connected seller's data is used. How we handle Amazon data









