--- product_id: 83741316 title: "Smart Low-Flow Heater Replacement for Sundance Spa Hot Tub 5.5kW 6500-310/6500-301" brand: "spa depot" price: "฿23983" currency: THB in_stock: true reviews_count: 9 category: "Spa Depot" url: https://www.desertcart.co.th/products/83741316-smart-low-flow-heater-replacement-for-sundance-spa-hot-tub store_origin: TH region: Thailand --- # 5.5kW power output Low-flow titanium heating element Universal wire harness sets Smart Low-Flow Heater Replacement for Sundance Spa Hot Tub 5.5kW 6500-310/6500-301 **Brand:** spa depot **Price:** ฿23983 **Availability:** ✅ In Stock ## Summary > 🔥 Upgrade your spa’s heart with smart, lasting heat! ## Quick Answers - **What is this?** Smart Low-Flow Heater Replacement for Sundance Spa Hot Tub 5.5kW 6500-310/6500-301 by spa depot - **How much does it cost?** ฿23983 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/83741316-smart-low-flow-heater-replacement-for-sundance-spa-hot-tub) ## Best For - spa depot enthusiasts ## Why This Product - Trusted spa depot brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Easy Diagnostics:** Built-in indicator lights simplify troubleshooting and maintenance. - • **Powerful 5.5kW Heating:** Efficiently heats your Sundance spa with OEM-level performance. - • **Universal Installation:** Includes wire harness sets and sensors for a seamless upgrade. - • **Durable Titanium Element:** Corrosion-resistant for extended lifespan and reliable warmth. - • **Smart Low-Flow Compatibility:** Optimized for Sundance 650-850 & 880 series spas since 1995. ## Overview The Smart Low-Flow Heater Replacement is a 5.5kW, 240V titanium-element heater designed specifically for Sundance Spas (1995+ 650, 850 & 880 series). It features a high-limit sensor, diagnostic indicator lights, and universal wire harness sets for easy installation. Engineered to exceed OEM standards, it delivers reliable, efficient heating with long-lasting durability, making it the ultimate upgrade for your hot tub’s performance. ## Description Water Pro Series Smart Low-flow Hot Tub Heater Assembly is compatible for use in Sundance Spas. Features Titanium extended life element and meets or exceeds OEM spa heater specifications. You cannot buy a better replacement spa heater at any price. Includes 1/4" sensor 6600-168, high limit disk, wire harness, extra 3/4” hose. Fits 1995+ 650 - 850 & 880 series with low flow heaters. Sundance is a registered trademark of Jacuzzi Brands, LLC. Review: Great replacement - My original hot tub heater started leaking. I order this one as it was substantially cheaper than from the spa dealer. It came in a few days. It was easy to install. It took two people to install it but that was doing it with the hot tub full of water. It would only require 1 person if the tub was empty. It only took about 45 minutes to install. It’s been running for a couple months none stop and keeps the temperature right were it should be. Review: Easy Replacement for OEM - Happy with how easy this was to install. Replaced my OEM heater in around 15 minutes and it was heating the tub. I have two minor complaints. First is that the over heat sensor isn't attached, it needs to be attached with silicone into the top or bottom depending on your configuration. Second is probably hot tub specific, but when my tub was heating in ice / cold mode, the heating light indicator was not on the heater as the hot tub was not directly calling for heat. Once it got out of this mode, the heating indicator was on as was the light on the heater. I wasn't sure if it was working at the beginning. ## Features - 5.5kW @ 240V Titanium element - Low Flo - Fits Sundance spas 1995 & newer, 650-850 & 880 series - Includes High-Limit Sensor & Switch - Indicator lights for easy diagnostics - Wire harness sets for universal installation ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B077JB3K1R | | Best Sellers Rank | #171,607 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #4,271 in Pool & Spa Replacement Parts | | Customer Reviews | 4.5 4.5 out of 5 stars (167) | | Is Discontinued By Manufacturer | No | | Item Weight | 3.94 pounds | | Manufacturer | Spa Depot | | Product Dimensions | 3.94 x 3.94 x 3.94 inches | ## Images ![Smart Low-Flow Heater Replacement for Sundance Spa Hot Tub 5.5kW 6500-310/6500-301 - Image 1](https://m.media-amazon.com/images/I/61VFDHpz0eL.jpg) ![Smart Low-Flow Heater Replacement for Sundance Spa Hot Tub 5.5kW 6500-310/6500-301 - Image 2](https://m.media-amazon.com/images/I/614-uewTCzL.jpg) ![Smart Low-Flow Heater Replacement for Sundance Spa Hot Tub 5.5kW 6500-310/6500-301 - Image 3](https://m.media-amazon.com/images/I/61ncuSSVbtL.jpg) ![Smart Low-Flow Heater Replacement for Sundance Spa Hot Tub 5.5kW 6500-310/6500-301 - Image 4](https://m.media-amazon.com/images/I/61KegjjGvLL.jpg) ![Smart Low-Flow Heater Replacement for Sundance Spa Hot Tub 5.5kW 6500-310/6500-301 - Image 5](https://m.media-amazon.com/images/I/61KjJWYaUQL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Great replacement *by M***E on August 7, 2025* My original hot tub heater started leaking. I order this one as it was substantially cheaper than from the spa dealer. It came in a few days. It was easy to install. It took two people to install it but that was doing it with the hot tub full of water. It would only require 1 person if the tub was empty. It only took about 45 minutes to install. It’s been running for a couple months none stop and keeps the temperature right were it should be. ### ⭐⭐⭐⭐⭐ Easy Replacement for OEM *by B***W on March 8, 2024* Happy with how easy this was to install. Replaced my OEM heater in around 15 minutes and it was heating the tub. I have two minor complaints. First is that the over heat sensor isn't attached, it needs to be attached with silicone into the top or bottom depending on your configuration. Second is probably hot tub specific, but when my tub was heating in ice / cold mode, the heating light indicator was not on the heater as the hot tub was not directly calling for heat. Once it got out of this mode, the heating indicator was on as was the light on the heater. I wasn't sure if it was working at the beginning. ### ⭐⭐⭐⭐ Easy to install works great *by K***S on April 17, 2024* Well packaged. They provided extra hoses and wire harnesses. Works great. --- ## 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.co.th/products/83741316-smart-low-flow-heater-replacement-for-sundance-spa-hot-tub](https://www.desertcart.co.th/products/83741316-smart-low-flow-heater-replacement-for-sundance-spa-hot-tub) --- *Product available on Desertcart Thailand* *Store origin: TH* *Last updated: 2026-06-15*