--- product_id: 6462695 title: "Quantum 300 Watt Hardside Waterbed Heater California King Queen & Super Single Water Beds" brand: "thermal guardian temperature control systems" price: "€ 332.64" currency: EUR in_stock: true reviews_count: 8 url: https://www.desertcart.hr/products/6462695-quantum-300-watt-hardside-waterbed-heater-california-king-queen-super store_origin: HR region: Croatia --- # 300W precise heating power Ultra-sensitive dial control ±1/8° 5-year limited warranty protection Quantum 300 Watt Hardside Waterbed Heater California King Queen & Super Single Water Beds **Brand:** thermal guardian temperature control systems **Price:** € 332.64 **Availability:** ✅ In Stock ## Summary > 🔥 Stay warm, stay ahead — the ultimate waterbed heater for pros! ⚡ ## Quick Answers - **What is this?** Quantum 300 Watt Hardside Waterbed Heater California King Queen & Super Single Water Beds by thermal guardian temperature control systems - **How much does it cost?** € 332.64 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/6462695-quantum-300-watt-hardside-waterbed-heater-california-king-queen-super) ## Best For - thermal guardian temperature control systems enthusiasts ## Why This Product - Trusted thermal guardian temperature control systems brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Duraflex Vinyl Pad:** Durable, thermal-fused 64-gauge vinyl for long-lasting comfort. - • **Trusted 5-Year Warranty:** Sleep easy knowing your investment is protected nationwide. - • **Robust 300W Heating Power:** Effortlessly warm California King, Queen & Super Single beds. - • **User-Friendly Dial Control:** Intuitive, ultra-sensitive control for hassle-free adjustments. - • **Precision Temperature Control:** Maintain your perfect sleep climate with ±1/8° accuracy. ## Overview The Quantum 300 Watt Hardside Waterbed Heater delivers precise temperature control within ±1/8 degree using advanced nickel/copper circuitry and a durable 64-gauge thermal fused vinyl pad. Designed for California King, Queen, and Super Single waterbeds, it features an easy-to-use dial control and comes backed by a 5-year limited warranty, ensuring reliable warmth and peace of mind for years. ## Description Technical data: *Certified to the standards of underwriter's Laboratories for Water bed Heaters #1445 *18 Gauge power cord *32-guage Nickel/Copper flexible circuitry Larger Pad with 64-guage Thermal Fused Duraflex Vinyl *Premiere Cream Control Base *State-of-the-art, Ultra sensitive electronic control that holds the temperature to + or - 1/8 degree of set point. Insures consistent and accurate temperature sensing and readout *Unique Double Mount Control *5 year Limited Warranty SOLD NATIONALLY FOR 9. Review: Maintains temperature within 1 degree. - Works great! Maintains temperature within 1 degree. Review: So far so good. - I ordered this for my father in law. I was not able to take photos. Though I did see that it was packaged for safe arrival. I waited to put in my review as I saw a lot of reviews about the time frame of working. It must be pretty easy to install and working great as my father in law is a grizzly bear about such things and so far he's been teddy bear about it all. I did my homework on the brand and cost prior to ordering as I know how he gets. ## Features - 5 Year Warranty - Easy To Use Control with Dial - We have it in stock - We ship fast - If you have any questions feel free to email. ## Technical Specifications | Specification | Value | |---------------|-------| | Brand | THERMAL GUARDIAN TEMPERATURE CONTROL SYSTEMS | | Color | Black | | Heat Output | 300 Watts | | Material | Nickel/Copper, Vinyl, Cream | | Power Source | Corded Electric | | Wattage | 300 watts | ## Product Details - **Brand:** Thermal Gaurdian - **Special Feature:** State-of-the-art, Ultra sensitive electronic control for temperature regulation - **Color:** Black - **Wattage:** 300 watts - **Heat Output:** 300 Watts ## Images ![Quantum 300 Watt Hardside Waterbed Heater California King Queen & Super Single Water Beds - Image 1](https://m.media-amazon.com/images/I/3193MnnjcPL.jpg) ## Questions & Answers **Q: with the heater being so small, how does it heat a king size waterbed?** A: We have a king size waterbed. It took a few days to heat the water up to our desired temperature, but since then it has maintained the desired temperature without any noticeable fluctuations. The purchase price was very reasonable and so far we have had it in place for 8 months and it has no trouble keeping our waterbed at a comfortable temperature. **Q: Quantum 300 watt hardside waterbed heater - can this be used on an old mattress that is only 7 inches deep?** A: Yes it can. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Maintains temperature within 1 degree. *by J***S on September 10, 2025* Works great! Maintains temperature within 1 degree. ### ⭐⭐⭐⭐⭐ So far so good. *by M***Y on August 10, 2016* I ordered this for my father in law. I was not able to take photos. Though I did see that it was packaged for safe arrival. I waited to put in my review as I saw a lot of reviews about the time frame of working. It must be pretty easy to install and working great as my father in law is a grizzly bear about such things and so far he's been teddy bear about it all. I did my homework on the brand and cost prior to ordering as I know how he gets. ### ⭐⭐⭐⭐ Quantum 300 watt Hardside Waterbed Heater *by C***L on December 3, 2012* This is a good heater, and hope it will give me several years of good service. I give a 4 star rating for the reason, that I have only used it for a short time. Shipping was very quick. --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.hr/products/6462695-quantum-300-watt-hardside-waterbed-heater-california-king-queen-super](https://www.desertcart.hr/products/6462695-quantum-300-watt-hardside-waterbed-heater-california-king-queen-super) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-04-23*