water heater thermostat
Skip itSoft demand (-29.0% this quarter) — this niche doesn't clear our bar today.
Avg price
Incredible$43.48avg listing price — sweet spot $15–$100
Review moat
Great368.9avg incumbent reviews — the moat a new listing must climb
Conversion
Good5.6%search→purchase rate — share of searches ending in a sale
Quality gap
Good4.5★avg incumbent rating — lower means beatable quality
Competition
Okay62%top-5 click share — leaders hold, buyers still browse
Brand share
Okay82%top-5 brand share — brands hold most of the demand
Price range
Okay$9.72–$237.05cheapest to priciest tracked listing — scored on the share inside $15–$100
Market size
Okay$127K$127K/yr · 52K searches
Returns
Bad5.9%return rate — above 5% kills the launch gate
Growth
Bad-29.0%90-day search growth — must beat 0% to launch
According to Flapen's Amazon United States niche tracking, water heater thermostat is a $127K/yr Amazon United States market (52K searches/yr). The top 5 brands hold 82% of demand. Demand peaks in Jan–Feb–Dec. Verdict: Skip it — 40/100.
Data updated Jul 29, 2026 · scored weekly · How we score niches
water heater thermostat market data
- Units sold / yr
- 3K–3K
- avg 0–100/product
- Revenue / yr
- $109K–$130K
- units × avg price
- Conversion rate
- 5.6%
- Avg BSR
- #4,490
- Page quality
- 0%
- Prime
- 90%
- Sponsored
- 60%
- Out of stock
- 5.5%
- Avg brand age
- 41 months
- Avg seller age
- 163 days
Competition & brand share
The top 5 products take 62% of clicks — established leaders, but buyers still shop beyond them.Brands
11 falling
Sellers
122
Top-5 brand share
82%
Top 20: 100%
Top-5 click share
62%
Top 20: 100%
Open market
11%
- NISHCON24%
- DROMIX23%
- Rheem18%
- Z9%
- Reliance9%
- APCOM7%
- Open — no brand owns it (5 brands, 11%)
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — -29.0% search growth over the last 90 days.Peak months: Jan, Feb, Dec · busiest ÷ quietest = 2.1×
Top water heater thermostat search terms
- water heater thermostat25K/yr
- ao smith water heater thermostat7K/yr
- hot water heater thermostat7K/yr
- electric water heater thermostat5K/yr
- rheem water heater thermostat6K/yr
- a o smith water heater thermostat3K/yr
Top water heater thermostat 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 20 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
EWH-00 Water Heater Thermostat Electric Water Heater Thermostat For Double Element Heater Include Upper And Lower Element Thermosatat Water Heater Replacement Parts Fit For Most Water Heaters
NISHCON$24.504.6★124 rev
EWH-00 Water Heater Thermostat Electric Water Heater Thermostat For Double Element Heater Include Upper And Lower Element Thermosatat Water Heater Replacement Parts Fit Most Water Heaters
DROMIX$26.544.6★298 rev
Rheem UV11698 Therm-O-Disc Upper Thermostat Electric Water Heaters
Rheem$14.994.5★447 rev
Zero EWH-01 Electric Water Heater Thermostat Plumber Repair Pack Tune-Up Kit
Z$33.804.6★428 rev
Apcom WH10-A Bradford White Upper Water Heater Thermostat
APCOM$21.644.7★680 rev
Newest
by launch date
EWH-03 Electric Water Heater Tune-Up Kit - Comes with 2 Water Heater thermostats 2 Heating Elements 1 Element Wrench Socket by Beaquicy
Beaquicy$37.5416 rev
SP210245 Long-Term Thermostat Kit for Dual-Element Electric Water Heaters includes 1 upper thermostat and 1 lower thermostat suitable for most electric water heaters.
DAIYAWEIDX$25.502 rev
NISHCON EWH-01 Electric Water Heater Tune-Up Kit Water Heater Parts Fit for Most Electric Water Heaters Includes 2 Heater Elements - 4500W 240V (3500W@208V) Upper & Lower Heater Thermostat
NISHCON$30.82124 rev
Rheem SP20867C Combination Gas Control Replacement Kit Natural Gas (NG) Water Heater Valve OEM Thermostat & Gas Regulator
Rheem$237.0529 rev
EWH-00 Water Heater Thermostat Electric Water Heater Thermostat For Double Element Heater Include Upper And Lower Element Thermosatat Water Heater Replacement Parts Fit For Most Water Heaters
NISHCON$24.50124 rev
Trending
90-day click momentumSP210245 Long-Term Thermostat Kit for Dual-Element Electric Water Heaters includes 1 upper thermostat and 1 lower thermostat suitable for most electric water heaters.
DAIYAWEIDX$25.505.0★
EWH-03 Electric Water Heater Tune-Up Kit - Comes with 2 Water Heater thermostats 2 Heating Elements 1 Element Wrench Socket by Beaquicy
Beaquicy$37.544.4★
NISHCON EWH-01 Electric Water Heater Tune-Up Kit Water Heater Parts Fit for Most Electric Water Heaters Includes 2 Heater Elements - 4500W 240V (3500W@208V) Upper & Lower Heater Thermostat
NISHCON$30.824.6★
Eastman 60174N Thermostat for Single Element Water Heaters Black
Eastman$13.624.5★
Apcom WH10-A Bradford White Upper Water Heater Thermostat
APCOM$21.644.7★
What buyers say about water heater thermostat
What buyers praise and complain about, mined from review topics.What buyers love
“Installed it and so fare it works perfect”
“Good Value”
“Fit good”
“Works great”
“Been over a year and no complaints”
“Worked perfectly”
“very durable”
“Very simple to use”
“This repair kit made it reasonably easy to service my water heater”
“It is very important you get the right part number if you want it to drop right in”
What buyers complain about
“Does not work”
“ECO failed within a month”
“It didn't work, wrong part, defective”
“Trash”
“Item arrived previously opened”
“Now I have to wait for another delivery to install”
“Did not work for me because the water heater started to leak after I drained and refilled it”
“Replacement needed for the replacement”
“it started sparking”
“the smell of burnt plastic notified me something was up”
Top return reasons
Common questions
- Is water heater thermostat profitable to sell on Amazon United States?
- The niche generates $127K/yr across 20 tracked products. 1 of 2 products launched in the last 360 days are still selling. 90-day search growth is -29.0%. Flapen's verdict: Skip it (40/100).
- How competitive is the water heater thermostat niche?
- 11 brands and 122 sellers compete. The top 5 products take 62% of clicks and top 5 brands hold 82% of demand.
- What do buyers complain about in water heater thermostat?
- Top complaints mined from reviews: Functionality-Overall, Durability, Defective Material/Parts. The return rate is 5.9% — above our launch gate.
- When does demand for water heater thermostat peak?
- Demand peaks in Jan–Feb–Dec; the busiest month runs 2.1× the quietest.
- What does it cost to enter the water heater thermostat niche?
- Listings span $9.72–$237.05; the average listing price is $43.48 (sweet spot $15–$100). The average incumbent carries 369 reviews — the moat a new listing must climb.