Tetra 26446 HT Submersible Aquarium Heater
With Electronic Thermostat, 100-Watt, Multicolor, 10-30 Gallon
Price as of 2026-08-12. Check Amazon for the current price.
Quick Decision
Is This Right For You?
- •Those who want a top-rated option — in the top 1% of Aquarium Heaters by rating
- •Risk-averse buyers — 16,744+ reviews give a highly reliable picture
- •Tetra loyalists — the brand spans 20 products in our database
- •PULACO 25Watt Mini Aquarium Submersible Betta Heater — 44% cheaper at $10 (Score A)
📊 Based on data analysis of 7 products in this category.
Mubboo Score: A-
How we calculate the Mubboo Score
Quality (45%): customer rating, normalized to a 10-point scale
Popularity (35%): review volume vs the category leader, log-scaled
Value (20%): price position vs other Aquarium Heaters
Computed from live Amazon rating, review count, and price across 7 Aquarium Heaters available to US consumers · last refreshed 2026-08-12.
How It Compares
This Product Tetra 26446 HT Submersible Aquarium Heater | Most Popular PULACO 25Watt Mini Aquarium Submersible Betta Heater | Best Rated Orlushy Submersible Aquarium Heater | Best Value HITOP 50W Adjustable Aquarium Heater | |
|---|---|---|---|---|
| Price | $17.99 | $9.99 | $18.68 | $12.79 |
| Rating | 4.4/5 | 4.3/5 | 4.4/5 | 4.4/5 |
| Reviews | 16,744 | 11,930 | 8,245 | 4,130 |
| Mubboo Score | A- | A | A- | A- |
Quick Specs
- Color
- Black
- Wattage
- 100 watts
- Material
- Alloy Steel, Plastic
- Unit Count
- 1 Count
- Item Weight
- 5.6 ounces
- Part Number
- AQ-26446
- Manufacturer
- Tetra
- Model Number
- 26446
What buyers say about Aquarium Heaters
Themes from buyer reviews across this category — not review data for this specific model.
Ensure adequate water circulation to prevent flow errors, use a separate thermometer to verify tank temperature, and consider adjustable models if you need to treat diseases with higher heat.
- Reliable and consistent temperature maintenance
- Simple setup and easy operation
- Compact and space-saving design
- Durable construction and build quality
- Good value for the price
- Fixed temperature with no user adjustment
- Short lifespan or abrupt failure
- Requires proper placement and strong water flow
- Overheating or dangerous malfunction
Expert Picks in Aquarium Heaters
- Marina 20G LED Aquarium Kit — Freshwater starter kit without heater
- Eheim Jäger Thermostatic Aquarium Heater (100 Watts) — Precision heater for tropical tanks
- Aqueon LED 20 Aquarium Kit — All-in-one kit with heater
Category recommendations from independent expert publications. Source links in References.
Related Video Reviews
- 📹 Aquarium Heater Dilemma SOLVED for Good! — KaveMan Aquatics
- 📹 The Best Aquarium Heaters (And How To Choose) — Aquarium Store Depot
- 📹 Good, Better, Best: Our Favorite Aquarium Heaters! — BRStv - Saltwater Aquariums & Reef Tanks
Key Features
- ✦AQUARIUM HEATER: Submersible heater is designed to keep your aquarium at the optimum temperature.
- ✦AUTOMATIC THERMOSTAT: Electronic thermostat keeps water at a consistent 78 degrees.
- ✦INDICATOR LIGHT: The red light shows when water is heating; green indicates that the heater is on standby.
- ✦EASY TO USE: Just attach to an aquarium wall – the suction cup securely attaches heater to tank.
- ✦SIZE: Use this 100-watt heater for 10 to 30 gallon aquariums – UL Listed.
Source: product listing on Amazon.
About Tetra
- 20 products in our database
- Average rating: 4.5/5 across all products
- Price range: $2.99 – $194.30
- Categories: aquarium-accessories, Aquarium Air Pumps, aquariums-and-fish-bowls, Aquarium Filters, Aquarium Heaters, Aquariums
If not the 26446 HT Submersible Aquarium Heater, consider these
Featured in Our Reviews
Bottom Line
Tetra 26446 HT Submersible Aquarium Heater earns Mubboo Score A-. Priced at $18 — a mid-range option, below the category average of $21. Rated 4.4/5 from 16,744+ reviews. Strong buy if: those who want a top-rated option, risk-averse buyers.
Frequently Asked Questions
Is the Tetra 26446 HT Submersible Aquarium Heater worth buying in 2026?
It earns a Mubboo Score of A-, with a 4.4/5 rating from 16,744 reviews — better than 100% of Aquarium Heaters we track.
How much does the Tetra 26446 HT Submersible Aquarium Heater cost?
It is currently $17.99 — mid-tier pricing for Aquarium Heaters.
How does the 26446 HT Submersible Aquarium Heater compare to other Aquarium Heaters?
The category's most-reviewed alternative is the PULACO 25Watt Mini Aquarium Submersible Betta Heater (4.3/5, 11,930 reviews, $9.99). The 26446 HT Submersible Aquarium Heater carries a Mubboo Score of A- vs A.
Sources & References
Products available through US retailers. Prices in USD. Sales tax varies by state and is not included.
Mubboo may earn a commission on purchases made through affiliate links. This does not affect our Mubboo Score, product rankings, or editorial judgments. Prices are accurate as of the last sync (2026-08-12) and may change.