---
title: "Millivolt Thermostat — $92K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/tools-home-improvement/millivolt-thermostat"
last_updated: "2026-08-08T23:54:42.019Z"
locale: en
meta:
description: "Niche score 35/100 · $92K/yr market · 89K searches/yr · $29.03 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 35/100 · $92K/yr market · 89K searches/yr · $29.03 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Millivolt Thermostat — $92K/yr Amazon US Niche (2026) - Flapen"
---
# **millivolt thermostat**
**Skip it**
Soft demand (-56.6% this quarter) — this niche doesn't clear our bar today.
Market size 23Growth 0Conversion 44Competition 36Returns 21Price range 84Avg price 95Brand share 26Review moat 56Quality gap 57
**Avg price**
**Incredible****$29.03**
avg listing price — sweet spot $15–$100
**Price range**
**Great****$8.94–$53.97**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Quality gap**
**Good****4.4★**
avg incumbent rating — lower means beatable quality
**Review moat**
**Good****1,266.19**
avg incumbent reviews — the moat a new listing must climb
**Conversion**
**Okay****3.5%**
search→purchase rate — share of searches ending in a sale
**Competition**
**Okay****63%**
top-5 click share — leaders hold, buyers still browse
**Brand share**
**Okay****90%**
top-5 brand share — brands hold most of the demand
**Market size**
**Bad****$92K**
$92K/yr · 89K searches
**Returns**
**Bad****6.3%**
return rate — above 5% kills the launch gate
**Growth**
**Bad****-56.6%**
90-day search growth — must beat 0% to launch
**Signals**[** High Returns**](https://flapen.com/research/niches?market=us&signal=high_returns "Return rate > 5%")
According to Flapen's Amazon United States niche tracking, millivolt thermostat is a $92K/yr Amazon United States market (89K searches/yr). The top 5 brands hold 90% of demand. Verdict: Skip it — 35/100.
Data updated Jul 27, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **millivolt thermostat market data**
- **Units sold / yr**
- **3K–4K**
- avg 100–250/product
- **Revenue / yr**
- **$87K–$116K**
- units × avg price
- **Conversion rate**
- **3.5%**
- **Avg BSR**
- **#69**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **59%**
- **Out of stock**
- **3.5%**
- **Avg brand age**
- **62 months**
- **Avg seller age**
- **146 days**
## **Competition & brand share**
The top 5 products take 63% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**12 **▼falling
**Sellers**
**269**
**Top-5 brand share**
**90%**
Top 20: 100%
**Top-5 click share**
**63%**
Top 20: 94%
**Open market**
**7%**
- Honeywell Home53% - White-Rodgers14% - Honeywell11% - Miuputake6% - Riseem5% - Durablow4% - Open — no brand owns it (6 brands, 7%)
## **Demand**
Weekly Amazon search volume, last 33 weeks — -56.6% search growth over the last 90 days.
3K2KSpike '26Prime Day '26Dec '25Jan '26Feb '26Mar '26Apr '26May '26Jul '26
[**Open Trend **](https://flapen.com/research/us/tools-home-improvement/millivolt-thermostat/trend)
## **Top millivolt thermostat search terms**
- **mechanical thermostat**9K/yr-30.7%3.0% conv. - **manual thermostat**7K/yr-6.6%3.4% conv. - **analog thermostat**6K/yr-20.0%3.5% conv. - **mercury thermostat**6K/yr-33.9%2.3% conv. - **dial thermostat**4K/yr-27.6%2.9% conv. - **gas fireplace thermostat**10K/yr-71.6%2.3% conv. - **millivolt thermostat**12K/yr-75.7%5.2% conv. - **honeywell heat only thermostat**7K/yr-66.6%7.1% conv. - **millivolt thermostat heat only**6K/yr-63.3%3.8% conv. - **fireplace thermostat**6K/yr-71.8%3.0% conv. [**All search terms **](https://flapen.com/research/us/tools-home-improvement/millivolt-thermostat/search-terms)
## **Top millivolt 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.
0%4%$4K8%$7K12%$11K16%$15K1101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 24 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Honeywell Home CT30A1005 Standard Manual Economy Thermostat Almond 0.6**Honeywell Home**$17.24**4.3★2,557 rev](https://www.amazon.com/dp/B000BQWADS) [2**Honeywell Home CT87K1004 The Round Heat Only Manual Thermostat Large White Large**Honeywell Home**$27.83**4.1★2,956 rev](https://www.amazon.com/dp/B000EANORW) [3**Honeywell Home CT87N1001 The Round Non-Programmable Manual Thermostat Large White**Honeywell Home**$41.14**4.4★1,670 rev](https://www.amazon.com/dp/B000FCCZ5Q) [4**White-Rodgers Mercury-Free Mechanical Thermostat 1F56N-444**White-Rodgers**$33.25**4.2★1,070 rev](https://www.amazon.com/dp/B006FNREO6) [5**Honeywell TH1100DV1000 Pro-Digital 2-Wire Heat Only**Honeywell**$38.05**4.6★3,507 rev](https://www.amazon.com/dp/B00H6ARNXO)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**New! Honeywell Home Programmable Thermostat Single-Stage 1 Heat/1 Cool Compatibility 5-2 Day Schedule X2P White RTH20B**Honeywell Home**$34.43**691 rev1y ago](https://www.amazon.com/dp/B0DSGGDCR8) [**NonProgrammable Thermostat for Home Digital Energy-Saving Thermostat Single-Stage Systems 1 Heat/1 Cool Easy DIY Install White Backlight**Riseem**$24.33**652 rev1y ago](https://www.amazon.com/dp/B0DNDS8PKF) [**NonProgrammable Thermostat for House Digital Energy-Saving Thermostat Single-Stage Systems 1 Heat/1 Cool Easy DIY Install Blue Backlight**Miuputake**$24.43**374 rev1y ago](https://www.amazon.com/dp/B0DN9HV7B9) [**NonProgrammable Thermostat for Home Digital Energy-Saving Thermostat Single-Stage Systems 1 Heat/1 Cool Easy DIY Install White Backlight**Miuputake**$22.24**464 rev1y ago](https://www.amazon.com/dp/B0DMV9ZT74) [**KooingTech Mechanical Thermostat KTO011 0-60C Adjustive Thermostat**KooingTech**$9.92**5 rev1y ago](https://www.amazon.com/dp/B0DCB75RPP)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Quicksilver 75692Q2 Replacement Thermostat for Select Mercury Outboards 135-200hp**Quicksilver**$53.97**4.7★**▲ 460%**](https://www.amazon.com/dp/B001HBQUIC) [**KooingTech Mechanical Thermostat KTO011 0-60C Adjustive Thermostat**KooingTech**$9.92**4.8★**▲ 387%**](https://www.amazon.com/dp/B0DCB75RPP) [**NonProgrammable Thermostat for Home Digital Energy-Saving Thermostat Single-Stage Systems 1 Heat/1 Cool Easy DIY Install White Backlight**Riseem**$24.33**4.5★**▲ 158%**](https://www.amazon.com/dp/B0DNDS8PKF) [**Honeywell Home CT87N1001 The Round Non-Programmable Manual Thermostat Large White**Honeywell Home**$41.14**4.4★**▲ 115%**](https://www.amazon.com/dp/B000FCCZ5Q) [**NonProgrammable Thermostat for House Digital Energy-Saving Thermostat Single-Stage Systems 1 Heat/1 Cool Easy DIY Install Blue Backlight**Miuputake**$24.43**4.6★**▲ 112%**](https://www.amazon.com/dp/B0DN9HV7B9)
**~~View all trending →~~**
## **What buyers say about millivolt thermostat**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Assembly/Installation**28%
*“Installed in minutes”*
**Ease Of Use**15%
*“Make Life Easy”*
**Quality-Overall**9%
*“Excellent product for those w”*
**Efficiency**8%
*“works as excpected”*
**Value For Money**8%
*“Great value”*
**Advertised Vs Actual Product**8%
*“As advertised”*
**Instructions/User Manual/Troubleshooting**3%
*“clear instructions”*
**Functionality-Overall**2%
*“Was able to make it work”*
**Battery Life**2%
*“Battery life is great”*
**Compatibility-Overall**2%
*“Rv compatible”*
### **What buyers complain about **
**Functionality-Overall**17%
*“Did not work”*
**Quality-Overall**11%
*“Bad quality”*
**Durability**11%
*“Broken within 2 months”*
**Assembly/Installation**8%
*“It was not an easy install”*
**Defective Material/Parts**4%
*“Package appears opened and missing parts”*
**Instructions/User Manual/Troubleshooting**4%
*“I had to read reviews to figure this out because directions are sucky”*
**Size-Overall**4%
*“The numbers are large”*
**Value For Money**3%
*“A little pricey”*
**Product Condition**3%
*“Used”*
**Advertised Vs Actual Product**2%
*“does not work for what it description provides”*
### **Top return reasons **
**Compatibility-Overall**38%
**Functionality-Overall**23%
**Connectivity-Overall**7%
**Size-Overall**7%
**Defective Material/Parts**5%
**Advertised Vs Actual Product**4%
**Assembly/Installation**3%
**Value For Money**2%
**Product Condition**2%
**Heating**2%
## **Common questions**
- **Is millivolt thermostat profitable to sell on Amazon United States?**
- The niche generates $92K/yr across 27 tracked products. 90-day search growth is -56.6%. Flapen's verdict: Skip it (35/100).
- **How competitive is the millivolt thermostat niche?**
- 12 brands and 269 sellers compete. The top 5 products take 63% of clicks and top 5 brands hold 90% of demand.
- **What do buyers complain about in millivolt thermostat?**
- Top complaints mined from reviews: Functionality-Overall, Quality-Overall, Durability. The return rate is 6.3% — above our launch gate.
- **What does it cost to enter the millivolt thermostat niche?**
- Listings span $8.94–$53.97; the average listing price is $29.03 (sweet spot $15–$100). The average incumbent carries 1,266 reviews — the moat a new listing must climb.
## **Related niches in Tools & Home Improvement**
- 73 [**solar outdoor lights**](https://flapen.com/research/us/tools-home-improvement/solar-outdoor-lights)$30.2M/yr+39.8%**Launch it**- 73 [**shower lamp**](https://flapen.com/research/us/tools-home-improvement/shower-lamp)$2.8M/yr+30.2%**Launch it**- 73 [**solar flowers**](https://flapen.com/research/us/tools-home-improvement/solar-flowers)$607K/yr+52.0%**Worth a look**- 73 [**american flag lights**](https://flapen.com/research/us/tools-home-improvement/american-flag-lights)$465K/yr+736.5%**Worth a look**- 73 [**solar fairy lights**](https://flapen.com/research/us/tools-home-improvement/solar-fairy-lights)$3.5M/yr+64.6%**Launch it**- 73 [**solar watering can with cascading lights**](https://flapen.com/research/us/tools-home-improvement/solar-watering-can-with-cascading-lights)$304K/yr+124.3%**Worth a look**[**All Tools & Home Improvement niches **](https://flapen.com/research/us/tools-home-improvement)