Aquarium Heaters - Submersible Heaters | Shatterproof Heaters For Aquariums - Online Store at Pet Mountain

Welcome to PetMountain!

Free Shipping over $75

Low Price Guarantee

No Sales Tax except CA

1-888-373-8686

Questions? Call
1-888-373-8686

Shop for Aquarium Heaters

Visi-Therm Deluxe Submersible Heater

For years, the name "Visi-Therm" has been the industry standard for excellence in aquarium heater performance and reliability. Now there is the Marineland Visi-Therm Deluxe - an advanced-design submersible aquarium heater that constitutes the next important step in aquarium heating technology. Accurate & Adjustable Temperature Dial Guaranteed for Life Perfect for Freshwater or Marine Aquariums Temperature settings from 65-89 Degrees 6-Foot cord length Has a Led On/Off Light To Indicate Clearly When The Heater Is Operating Water-calibrated to ensure precise temperature selection and superior performance, the Visi-Therm Deluxe delivers the ultimate in direct-set control, compact double- sealed durability and certified accuracy to within one degree. With a simple "click" of the dial, you choose the ideal water temperature. The custom Double-Suction Mounting Bracket features an adjustable three-position window that ensures easy-to-view temperature setting. And, of course, every Visi-Therm Deluxe is CSA listed and designed to exacting standards for extended submersion and operational safety. Click-Set Temp Select Dial Fully adjustable for superior accuracy. Double-Sealed Safety Waterproof double insulation and double strength glass component housing.

Jager Aquarium Heaters

The Ebo Jager all new TS series heaters. Made of 2mm thick shock resistant Pyrex glass construction, they are stronger and twice as thick as most other heaters. The Jager heater features a precision bistable thermostat with +/- 0.5° accuracy. Free from radio and TV interference. 6 foot double insulated power cord included. The Eheim Jager aquarium heaters are Certified to CSA-C22.2 and approved to UL 1018. Perfect for freshwater or saltwater aquariums Fully submersible aquarium heater with dry-run protection Adjustable from 64°F to 94°F with an easy to adjust thermostat

Submersible Aquarium Heater

The Cascade Submersible Heater is an economical alternative in aquarium heating. The Cascade Submersible Heater automatically sets and maintains to your desired temperature, and is accurate to one degree.The Cascade Submersible Heater contains easy view on/off light, dual suction cups with mounting clip and visible and accurate temperature setting scale. The Cascade Submersible Heater is constructed of heavy duty and shock resistant glass.The Cascade Submersible Heater is a top quality heating element with superior insulation and heat distribution, perfect for fresh and salt water aquariums.

Submersible Aquarium Heater

The Hydor Aquarium Heater is a submersible heater made with the exclusive PTC (Positive Thermal Coefficient) technology. This Hydor aquarium heater provides no thermal shock, is submersible, and engineered shatterproof glass designed to resist breakage in most normal aquarium situations. Ideal for Freshwater or Saltwater Aquariums Heater can be positioned vertical or horizontal The Hydor heater cord is approximately 6 feet long The Hydor Aquarium Heater has all the necessary features for safe and precise temperature maintenance of water in your tank. The exclusive technology and the high quality of the components guarantee a long lasting product.

Vuetech E Series Heater

Vuetech E Series Heaters employ an advanced digital microprocessor to continuously monitor and display aquarium water temperature. It contains an internal thermal sensor that continuously samples aquarium water temperature for greater accuracy and reliability. The most technologically advanced submersible aquarium heater available today Safe for for freshwater and saltwater aquariums Thermal sensor that continuously samples aquarium water temperature for greater accuracy and reliability The manufacturer does not state the range that the heater can be set to. Merely the actual temperature with high and low alerts on the LED. The Vuetech E Series Heater innovative color-coded temperature alert feature changes LCD screen color if aquarium water temperature varies from the pre-set temperature (Green = Safe Zone, Red = High Temperature Alert, Blue = Low Temperature Alert). The Vuetech E Series Heater has an easy-to-use adjustment lever that allows precision temperature settings in 0.5° increments and integrated heater guard offers advanced protection for fish and invertebrates.

Tetra Submersible Heater

The new, easy-to-use Tetra HT10 and HT30 Submersible Heaters are created especially for aquariums ranging from 2 to 30 gallons. The Tetra Submersible Heater contains an electronic thermostat that automatically adjusts the heat output to keep the water at a constant 78°F. All you have to do is put it in the aquarium and plug it in!

ELITE Radiant Mini Compact Heater

Radiant Heater - Mini Compact Only 6" (15 cm) Small fresh/salt water aquariums Maintains aquarium temperature Sure-Grip rim attachment One year guarantee

Digital Heater with Temperature Sensor

Aquatop’s D2HT Digital Heater Series provides accurate heating for your freshwater or saltwater aquarium. The D2HT Aquarium Heater uses the latest digital technology for internal temperature control to keep aquarium temperatures steady. Highly visible dual temperature display, Easy-to-use temperature control button Separately attached temperature sensor for stable temperature Advanced features include an automatic shut off margin set for 93°F to protect from overheating and internal memory that resumes preset temperatures after a power outage. A two millimeter thick glass tubes makes the D2HT line one of the strongest glass heaters on the market.

ViaAqua Quartz Heaters

ViaAqua Quartz Heaters are the New & Improved version of glass heaters. High quality quartz glass submersible heater with a visible temperature readout. Easy to install heater by using the suction cups to secure your heater in the desired area. Suction cups to secure to your tank Fully Submersible Aquarium Heaters High quality, break resistant quartz glass construction Visible temperature setting for accurate reading Saltwater and Freshwater compatible Temperature Range from 68-92

Mini Submersible Heater

Marina Mini Submersible Pre-set Heater. Maintain the temperature in your tank with this submersible heater. The convenient compact size fits in most aquariums and can be used in fresh or salt water.These heaters are easy to set and adjust. Contains an on/off light indicator and are made of high impact safety glass. They have suction cup brackets for easy installation, a ceramic heater core, bumper guards for protection, a water proof seal, temperature set dial, and a max water level line indicator. This heater is not fully submersible!

BettaTherm Heater

Zoo Med BettaTherm Heaters are perfect for your betta fish whose life is best in warm water. This 7.5 watt heater helps keep your betta bowl 5 - 10 degrees warmer than room temperature and is 100% submersible. The Betta Therm Heaters are designed in a round shape and fits in most glass or acrylic fish bowls. 3" Diameter 7.5 Watts For 1-3 Gallons Completely Submersible Can be used in Glass or Acrylic tanks and bowls

Slim Heater for Micro Tanks & Mini Aquariums

The Hydor slim heater is a submersible aquarium heater for micro tanks and mini aquariums 2-5 Gallons. Ideal for use in mini aquariums for fish that require heated water for a long, comfortable and healthy life. Safe UL Listed Heater Plug'N Play Submersible Heater Shock Proof Heater that provides natural warmth 7.5 Watt Slim Heater for 2 - 5 Gallon Aquariums Heats your tank 5-10 degrees hotter then room temperature

ELITE 8 Inch Radiant Heater

The Elite Radiant Compact Heater maintains aquarium temperature. It is ideal for fresh or salt water aquariums, and features a Sure-Grip rim attachment. Features a top setting temperature control knob.

Hydor ETH External Thermal Heater - In Line Heater

Hydor ETH External Thermal Heater In-Line Aquarium Heater suitable for all canister filters with 5/8" flexible hosing. No danger of damage if unit is run dry for short period as the ETH will switch itself off before overheating. Hydor ETH - External Thermal Heater fits in line with your filter tubing Reliable, Simple to Use, Extremeley Accurate Suitable for Freshwater and Saltwater aquariums Ideal for tropical fish breeding situations. Temperature control is adjustable between 66-90 deg F. Includes 2 Year Warranty from date of purchase. Heats with high efficiency and designed to avoid temperature variations caused by poor water circulation. The ETH external In-Line heater uses the advanced PTC system, which is a special polymer sheet, silk-screened with heating ink (like your car's windshield defroster) instead of metal coils. This state-of-the-art system allows the unit to be left running without water for a short time with no damage. For indoor, in-line use only, the ETH external heater has an adjustable heating control, and a hanging hook for easy placement outside your aquarium. Requires tubing.

Radiant Compact Heater

The Elite Radiant Compact Heater accurately maintains aquarium temperature - For fresh or salt water aquariums - Sure-Grip rim attachment. 110 Volt Radiant Compact Heater by Elite.

Mini Submersible Heater

The Hydor mini heater is a submersible aquarium heater for micro tanks and mini aquariums 5-10 gallons. Ideal for use in mini aquariums for fish that require heated water for a long, comfortable and healthy life. The Hydor mini heater can be placed undergravel in aquariums and terrariums. Safe UL Listed Heater Plug'N Play Submersible Heater Shock Proof Heater that provides natural warmth 15 Watt Mini Heater for 5 - 10 Gallon Aquariums

ViaAqua Titanium Heaters

The Commodity Axis ViaAqua Titanium Heater incorporates the best technology and electrical components to date. This heating element is manufactured of pure titanium that will not crack like conventional glass heaters. For larger environments use multiple heater! Safe for both Freshwater and Saltwater Aquariums Adjustable Temperature Range 68F to 93F 1-Year Manufacturer Warranty Includes 2 suction cups for securing to aquarium Fully Submersible Titanium Heater The remote thermostat allows you to alter the temperature without getting your hands wet. With a temperature scale built into the front of the heater, setting the optimum temperature for your aquarium is as simple as a turn of the knob.

Shatterproof Mini Heater

Marineland Shatterproof aquarium heater is a fully submersible mini heater. The innovatinve, space efficient design is only 5.5" long and is safe for Freshwater or Marine aquariums. Automatically set to 78 degrees Automatic Safety Shut-Off 10 Watt Heater for aquariums up to 3 gallons

View All

Next >

< Back

Aquarium Heaters – Submersible Heaters

Whether you have a saltwater or freshwater tank, Pet Mountain has the right heater for your aquarium.

In addition to offering a great selection of submersible aquarium heaters you simply won't find at your local pet store, our discounted aquarium heaters are marked down up to 70% off.

High-Quality, Shatterproof Aquarium Heaters

Enjoy the variety of selection in aquarium heaters by choosing from respected brands like Hydor, Marineland, Elite, Tetra and Fluval.

Check out the Jager Aquarium Heaters for an aquarium heater that features an easily adjustable thermostat. Fit for both freshwater and saltwater use, this fully submersible aquarium heater has dry-run protection and resistant glass construction.

Aquatop's Digital Dual Display Submersible Aquarium Heater makes gauging the temperature in your aquarium a breeze with an easy to use temperature control button and highly visible temperature display. This aquarium heater also features an automatic shut off margin to protect from overheating.

Hydor's Theo Shatter-Proof Submersible Heater is great for almost any size aquarium. This heater has wattage options from 2 gallon tanks to 105 gallon tanks, and can be positioned vertical or horizontal in your tank. With shatterproof glass and 6-foot cord, this submersible heater is one of our most popular heaters for fish tanks.

Marineland's Visi-Therm Deluxe Submersible Heater is another great option with a simple design that makes temperature control easy. Fluval's Vuetech E Series Heater features an internal thermal sensor and color-coded temperature alert feature that changes the LCD screen color if aquarium water varies from the pre-set temperature.

With multiple heating options for any size aquarium, Pet Mountain is your online leader in aquarium heaters and accessories.

Aquarium Heaters - Submersible Heaters | Shatterproof Heaters For Aquariums - Online Store at Pet Mountain

Shop for Aquarium Heaters

Visi-Therm Deluxe Submersible Heater

Jager Aquarium Heaters

Submersible Aquarium Heater

Submersible Aquarium Heater

Vuetech E Series Heater

Tetra Submersible Heater

ELITE Radiant Mini Compact Heater

Digital Heater with Temperature Sensor

ViaAqua Quartz Heaters

Mini Submersible Heater

BettaTherm Heater

Slim Heater for Micro Tanks & Mini Aquariums

ELITE 8 Inch Radiant Heater

Hydor ETH External Thermal Heater - In Line Heater

Radiant Compact Heater

Mini Submersible Heater

ViaAqua Titanium Heaters

Shatterproof Mini Heater

Aquarium Heaters – Submersible Heaters

High-Quality, Shatterproof Aquarium Heaters

Join Us! Email Sign Up

Customer Service

Pet Shops

Contact Us

Follow Us


Sign up to receive promo code
You’ll also receive our weekly deals and exclusive coupon codes. You can unsubscribe or change your email preferences at any time. We value our customers and will not sell or rent your email address. Ever.