combustion analyzer
Skip itSoft demand (-59.0% this quarter) — this niche doesn't clear our bar today.
Review moat
Great171.94avg incumbent reviews — the moat a new listing must climb
Quality gap
Great4.1★avg incumbent rating — lower means beatable quality
Market size
Good$540K$540K/yr · 71K searches
Returns
Okay3.8%return rate — above 5% kills the launch gate
Competition
Okay66%top-5 click share — leaders hold, buyers still browse
Conversion
Bad0.8%search→purchase rate — share of searches ending in a sale
Brand share
Bad97%top-5 brand share — brand-locked demand
Growth
Bad-59.0%90-day search growth — must beat 0% to launch
Avg price
Bad$977.56avg listing price — sweet spot $15–$100
Price range
Bad$95.74–$2021.73cheapest to priciest tracked listing — scored on the share inside $15–$100
According to Flapen's Amazon United States niche tracking, combustion analyzer is a $540K/yr Amazon United States market (71K searches/yr). The top 5 brands hold 97% of demand. Demand peaks in Jan–Feb–Oct–Nov–Dec. Verdict: Skip it — 33/100.
Data updated Jul 27, 2026 · scored weekly · How we score niches
combustion analyzer market data
- Units sold / yr
- 250–500
- avg 0–100/product
- Revenue / yr
- $244K–$489K
- units × avg price
- Conversion rate
- 0.8%
- Avg BSR
- #1,838
- Page quality
- 0%
- Prime
- 71%
- Sponsored
- 59%
- Out of stock
- 3.9%
- Avg brand age
- 87 months
- Avg seller age
- 176 days
Competition & brand share
The top 5 products take 66% of clicks — established leaders, but buyers still shop beyond them.Brands
6 falling
Sellers
53
Top-5 brand share
97%
Top 20: 100%
Top-5 click share
66%
Top 20: 100%
Open market
0%
- Fieldpiece41%
- Testo36%
- UEi Test Instruments12%
- Inficon6%
- KLEIN TOOLS3%
- TOPTES3%
- Open — no brand owns it (0%)
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — -59.0% search growth over the last 90 days.Peak months: Jan, Feb, Oct, Nov, Dec · busiest ÷ quietest = 5.0×
Top combustion analyzer search terms
- combustion analyzer49K/yr
- combustion analyzer hvac8K/yr
- fieldpiece combustion analyzer5K/yr
- testo combustion analyzer4K/yr
- flue gas analyzer3K/yr
- uei combustion analyzer3K/yr
Top combustion analyzer 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 17 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Fieldpiece SOX3 Combustion Check New with Hard Case
Fieldpiece$489.584.3★101 rev
testo 310 II Combustion Analyzer HVAC Combustion Leak Tester for Temperature Flue Gas & Pressure Natural Gas Leak Detector with Smart App and Probe
Testo$814.143.4★10 rev
Fieldpiece CAT85 - Combustion Analyzer with Live Draft and Built-in Monometer
Fieldpiece$1806.393.5★9 rev
testo 300 Combustion Analyzer HVAC Kit - Residential Combustion Leak Tester for Flue Gas Draft Differential Pressure Ambient CO Levels of Heating Systems - Natural Gas Leak Tester with Spare Probe
Testo$1406.234.2★22 rev
UEi C161C - Residential Combustion Analyzer with Case
UEi Test Instruments$667.053.4★4 rev
Newest
by launch date
UEI CEA Combustion Efficiency Tester
UEi Test Instruments$461.930 rev
TopTes Guard-101 Gas Detector 4 Gas Monitor for H2S CO LEL and O2 with Vibration Visual and Audible Alarms 14h Long Battery Life Safety Explosion-Proof for Work Home - Orange
TOPTES$95.74546 rev
testo 310 II Combustion Analyzer HVAC Combustion Leak Tester for Temperature Flue Gas & Pressure Natural Gas Leak Detector with Smart App and Probe
Testo$814.1410 rev
testo 310 II Combustion Analyzer HVAC Set with Printer Combustion Leak Tester for Temperature Flue Gas & Pressure Natural Gas Leak Detector with Smart App and Probe
Testo$1031.973 rev
INFICON Flue-Mate Combustion Analyzer with Printer
Inficon$1247.875 rev
Trending
90-day click momentum
Klein Tools ET120 Gas Leak Detector Combustible Gas Leak Tester with 18-Inch Gooseneck Has Range 50-10 000 ppm Includes Pouch Batteries
KLEIN TOOLS$124.504.6★
UEi C161C - Residential Combustion Analyzer with Case
UEi Test Instruments$667.053.4★
INFICON Flue-Mate Combustion Analyzer
Inficon$992.504.8★
Fieldpiece - CAT45 Combustion Analyzer - Accurately Measure O2 CO CO2 Draft Pressure - HVAC Tool
Fieldpiece$1224.724.4★
INFICON Flue-Mate Combustion Analyzer with Printer
Inficon$1247.874.8★
What buyers say about combustion analyzer
What buyers praise and complain about, mined from review topics.What buyers love
“Great for price”
“Work as advertised”
“Excellent Product”
“Very easy to use”
“Muy buen detector”
“Its compact, reliable, and a great tool for professional use”
“As a volunteer fire fighter in a department with a limited budget I hoped this would be a reasonable choice to ensure my personal safety at a fire or accident scene”
“light enough to have on shirt pocket”
“rechargeable battery, EZ to use, and reliable”
“accurate. in terms of detecting gases”
What buyers complain about
“faulty calibration”
“didn't last”
“it doesn't respond”
“Now testo service department have it for 4th time for repairs and calibration and this junk isnt worth repairing”
“it sounded a CO alarms immediately”
“they found a leak that this did not they have a better detector”
“this monitor is junk”
“weak construction”
“Need better instructions on calibration”
“This one terrible feature makes it extremely cumbersome to change the batteries”
Top return reasons
Common questions
- Is combustion analyzer profitable to sell on Amazon United States?
- The niche generates $540K/yr across 17 tracked products. 90-day search growth is -59.0%. Flapen's verdict: Skip it (33/100).
- How competitive is the combustion analyzer niche?
- 6 brands and 53 sellers compete. The top 5 products take 66% of clicks and top 5 brands hold 97% of demand.
- What do buyers complain about in combustion analyzer?
- Top complaints mined from reviews: Measurement/Reading Accuracy, Durability, Functionality-Overall. The return rate is 3.8%.
- When does demand for combustion analyzer peak?
- Demand peaks in Jan–Feb–Oct–Nov–Dec; the busiest month runs 5.0× the quietest.
- What does it cost to enter the combustion analyzer niche?
- Listings span $95.74–$2021.73; the average listing price is $977.56 (sweet spot $15–$100). The average incumbent carries 172 reviews — the moat a new listing must climb.