red angel a/c stop leak
Worth a lookShows demand growing +151.2% this quarter, but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Growth
Incredible+151.2%90-day search growth — must beat 0% to launch
Quality gap
Incredible3.9★avg incumbent rating — lower means beatable quality
Returns
Incredible0.8%return rate — above 5% kills the launch gate
Avg price
Great$47.01avg listing price — sweet spot $15–$100
Review moat
Good597avg incumbent reviews — the moat a new listing must climb
Price range
Good$17.84–$167.16cheapest to priciest tracked listing — scored on the share inside $15–$100
Conversion
Good4.3%search→purchase rate — share of searches ending in a sale
Brand share
Bad93%top-5 brand share — brand-locked demand
Market size
Bad$52K$52K/yr · 26K searches
Competition
Bad85%top-5 click share — a locked-up shelf
According to Flapen's Amazon United States niche tracking, red angel a/c stop leak is a $52K/yr Amazon United States market (26K searches/yr). The top 5 brands hold 93% of demand. Demand peaks in May–Jun–Jul–Aug. Verdict: Worth a look — 56/100.
Data updated Jul 9, 2026 · scored weekly · How we score niches
red angel a/c stop leak market data
- Units sold / yr
- 2K–3K
- avg 250–500/product
- Revenue / yr
- $94K–$118K
- units × avg price
- Conversion rate
- 4.3%
- Avg BSR
- #122
- Page quality
- 0%
- Prime
- 70%
- Sponsored
- 70%
- Out of stock
- 2.2%
- Avg brand age
- 77 months
- Avg seller age
- 171 days
Competition & brand share
The top 5 products capture 85% of clicks — a locked-up shelf that new listings rarely crack.Brands
7 rising
Sellers
24
Top-5 brand share
93%
Top 20: 100%
Top-5 click share
85%
Top 20: 100%
Open market
3%
- BlueDevil Products58%
- Leak Saver11%
- ERRECOM10%
- A/C Pro8%
- InterDynamics5%
- cmebiz4%
- Open — no brand owns it (1 brand, 3%)
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — +151.2% search growth over the last 90 days.Peak months: May, Jun, Jul, Aug · busiest ÷ quietest = 6.8×
Top red angel a/c stop leak search terms
- red angel ac stop leak9K/yr
- r134a stop leak6K/yr
- red angel a/c stop leak5K/yr
- ac stop leak r134 super seal2K/yr
- red angel4K/yr
Top red angel a/c stop leak 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.
All 10 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
BlueDevil Products Red Angel 49496 A/C Stop Leak - 2 Ounce
BlueDevil Products$25.134.3★832 rev
Leak Saver Direct Inject AC Leak Sealer | AC Stop Leak for Most HVAC Systems Up to 5 Tons | Works with All Systems & AC Refrigerants | Made in the USA
Leak Saver$35.364.3★2,237 rev
Certified A/C Pro UV Leak Detection Kit
A/C Pro$17.844.3★1,268 rev
ERRECOM Extreme A/C Leak Stop for Vehicle A/C Systems | 3.6 OZ Aerosol Can
ERRECOM$30.322.6★42 rev
Red Angel A/C Stop Leak & Conditioner by BlueDevil Products
BlueDevil Products$46.164.2★12 rev
Newest
by launch dateERRECOM Extreme A/C Leak Stop for Vehicle A/C Systems | 3.6 OZ Aerosol Can
ERRECOM$30.3242 rev
R134a Replacement with Stop Leak 4 Cans Total for AC Recharging
cmebiz$54.45167 rev
Errecom Extreme Ultra | A/C Leak Stop for Vehicle A/C Systems | Works with All Refrigerants and Lubricants | Includes R1234yf and R134a Adapters | 0.2 fl oz (6 mL) Cartridge
ERRECOM$28.54139 rev
A/C Pro AC Super Seal R-134a Stop Leak Treatment - 3oz
InterDynamics$35.79357 rev
Red Angel A/C Stop Leak & Conditioner by BlueDevil Products
BlueDevil Products$46.1612 rev
Trending
90-day click momentumERRECOM Extreme A/C Leak Stop for Vehicle A/C Systems | 3.6 OZ Aerosol Can
ERRECOM$30.322.6★
Certified A/C Pro UV Leak Detection Kit
A/C Pro$17.844.3★
Red Angel 49496 A/C Stop Leak - 2 Ounce (Pack of 6)
BlueDevil Products$167.164.3★
Leak Saver Direct Inject AC Leak Sealer | AC Stop Leak for Most HVAC Systems Up to 5 Tons | Works with All Systems & AC Refrigerants | Made in the USA
Leak Saver$35.364.3★
R134a Replacement with Stop Leak 4 Cans Total for AC Recharging
cmebiz$54.454.0★
What buyers say about red angel a/c stop leak
What buyers praise and complain about, mined from review topics.What buyers love
“Stop Leak”
“Easy to Use”
“Extremely pleased with results so far”
“A worthy Investment”
“As advertised”
“AFTER MANY ATTEMPTS WITH OTHER PRODUCTS TO STOP MY ANNOYING PICKUP TRUCK AIR CONDINING LEAK,,THIS SID THE JOB,,,FULL STOP”
“it can potentially save a significant amount of money compared to more extensive repairs”
“Instructions were easy to follow”
“This air conditioning additive is a very convenient solution for anyone looking to maintain their vehicle cooling system without a trip to a professional shop”
“I think it fixed the compressor leak in my 30 year old landcruiser”
What buyers complain about
“Leaks”
“Nothing will flow in or out”
“value is terrible”
“Follow the instructions EXACTLY, TO THE LETTER, and DO NOT DEVIATE from the steps or the order they are in”
“This feels misleading”
“Garbage”
“the AC is far colder than it was before”
“A designed scam”
“broke almost immediately”
“Product did not work at all”
Top return reasons
Common questions
- Is red angel a/c stop leak profitable to sell on Amazon United States?
- The niche generates $52K/yr across 10 tracked products. 1 of 1 products launched in the last 360 days are still selling. 90-day search growth is +151.2%. Flapen's verdict: Worth a look (56/100).
- How competitive is the red angel a/c stop leak niche?
- 7 brands and 24 sellers compete. The top 5 products take 85% of clicks and top 5 brands hold 93% of demand.
- What do buyers complain about in red angel a/c stop leak?
- Top complaints mined from reviews: Leak-Proof, Functionality-Overall, Value For Money. The return rate is 0.8%.
- When does demand for red angel a/c stop leak peak?
- Demand peaks in May–Jun–Jul–Aug; the busiest month runs 6.8× the quietest.
- What does it cost to enter the red angel a/c stop leak niche?
- Listings span $17.84–$167.16; the average listing price is $47.01 (sweet spot $15–$100). The average incumbent carries 597 reviews — the moat a new listing must climb.