Aquarium Heaters - Fish Tank Heaters & Thermometers

Creating the perfect habitat for your pet fish is a big part of their care. For some fish, aquarium heaters might be necessary in order to keep their habitat at the perfect temperature in which they’ll thrive. Pet parents looking for fish tank heaters can find everything they need at PetSmart. Here, we want to help you give your fish the best care with the best products.

Our selection of fish tank heaters includes products like:

Betta Bowl/Tank Heaters Compact/Aquarium Heaters Submersible Tank Heaters Wi-Fi Fish Habitat Heaters And More

PetSmart offers the best selection of fish habitat heaters to help you create the perfect home for your pet. Need something else for your fish tank? We also sell other heating/lighting products such as light bulbs/accessories for fish tanks along with hoods and glass canopies for aquariums.

PetSmart also offers convenient shopping with curbside or in-store pickup. Need something today? We have select items available for same-day delivery in most areas powered by DoorDash. For items you purchase frequently, PetSmart has Autoship that automatically delivers the items you want to your door as often as you’d like. Check the website to see what items are eligible.

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For all offers listing a percent or dollar amount off regular price for individual products or categories of products: Eligible products only. Exclusions may apply. While supplies last. Quantities may be limited. Prices & selection may vary by store & online. Deliveries may be delayed. Offer may not be combinable with other promotions offers or discounts. Terms and conditions of an offer are subject to change at the sole discretion of PetSmart. See offer on site for end date. If the offer is a BUY/GET offer: Discount taken on lowest priced item(s) purchased. Mix and match not allowed between offers. Some offers require a minimum quantity purchase receive discount. If the offer is a sitewide SPEND/GET offer: Transaction total is prior to taxes & shipping & after discounts are applied. Promo code may be required and should be entered upon checkout. See product page to determine eligibility and for complete offer details. If the offer is an EXTRA SAVINGS offer: Valid on select sale & online prices for merchandise. Enter promo code at checkout. See product page to determine eligibility and for complete offer details. For TREATS REWARDS offers: All bonus points offers must be activated in your Treats Rewards account prior to purchase. Must be signed in to your Treats Rewards account online or use membership ID in stores at checkout. See offer card in your Treats Rewards account for complete offer details.

*Terms & conditions apply. Eligible products only. See product page for eligibility and offer details.

Save an extra 20% on select sale & online prices for merchandise on petsmart.ca or the PetSmart app. Enter promo code SAVE20 at checkout. Eligible products only. Exclusions apply. Brand exclusions include, but are not limited to, Arm & Hammer, Tidy Cat, Fancy Feast, Friskies, Litter Robot, Iams & select Royal Canin. See product page to determine eligibility. Offer not valid on services, gift cards, gift certificates, previous purchases & charitable donations. Offer may not be combinable with all existing promotional offers or discounts. Prices & selection may vary. While supplies last. Quantities may be limited & deliveries may be delayed. Offer valid through 10/14/24.

Ship to Home Disclaimer: Treats members receive free standard shipping on select online orders over $49 (prior to taxes & after discounts are applied) when signed into their Treats account prior to purchase. Shipping is not available to Quebec. The savings will automatically reflect in the shopping cart with the purchase of qualifying merchandise. Due to size and/or weight, certain items bear an additional shipping surcharge or special handling fee. Select products in the following categories are not available for free shipping: live pets, canned, fresh or frozen foods, select cat litters. Free shipping may not be combinable with other promotional offers or discounts. Deliveries may be delayed due to acts beyond our reasonable control, which may include, but are not limited to, weather, strikes, power outages, shutdowns, local, provincial or federal governmental actions, and other similar acts.

Same-Day Delivery Disclaimer: Free Same-Day Delivery offer valid on select merchandise purchased at petsmart.ca when choosing Same-Day Delivery. Same-day delivery is available in most areas. Order by 9am for delivery between 12pm-3pm, by 1pm for delivery between 3pm-6pm, & by 5 pm for delivery between 7:30pm-9pm. Orders placed after 3pm will be fulfilled the next day. Delivery may be delayed due to acts beyond our reasonable control, which may include, but are not limited to, weather, strikes, power outages, shutdowns, local, provincial or federal governmental actions, and other similar acts. While delivery is contact-free, be sure to be home during your delivery window to bring any perishable items inside right away. Prices & selection may vary in stores & online. While supplies last. Quantities may be limited. See www.petsmart.ca/help or store associate for more details.

Autoship Disclaimer: Sign up for Autoship and have products conveniently delivered to you at the frequency you choose! Autoship now available in select areas only; eligibility for Autoship is determined once ship-to postal code is entered. Enrol today and enjoy 15% savings on select items on your initial autoship order and up to 5% on all recurring orders. Treats membership is required to receive discount. Must be signed into your Treats account prior to purchase. Maximum savings is $30.00. Certain products and brands are not eligible for sitewide offers or promotions and specifically excludes, services, gift cards, gift certificates, previous purchases and charitable donations. Savings will automatically reflect in cart on qualifying item upon enrollment in Autoship. Treats members receive free shipping on select orders over $49.00, prior to taxes & after discounts are applied. Offer may not be combinable with other promotional offers or discounts. While supplies last. Quantities may be limited. Deliveries may be delayed. Terms and conditions of this offer are subject to change at the sole discretion of PetSmart.

In-Store Pickup Disclaimer: Curbside orders must be picked up two hours prior to store closing time. In store pickup available during all store hours. Orders must be placed two hours prior to pickup to receive same day. Store hours may vary. Check your local store for details & current store hours. Prices & selection may vary by store & online. While supplies last. Quantities may be limited. See PetSmart | Help or store associate for more details.