{"product_id":"taiace-electric-water-heater-thermostat-duo-ul-certified","title":"Electric Water Heater Thermostat Kit - Upper KST203 \u0026 Lower KST200","description":"\u003cp\u003eIn this review the Electric Water Heater Thermostat Kit is evaluated as a straightforward replacement solution for dual element residential water heaters. The kit bundles a \u003cstrong\u003eKST203 upper thermostat\u003c\/strong\u003e and a \u003cstrong\u003eKST200 lower thermostat\u003c\/strong\u003e, both UL certified and adjustable from 90F to 150F, which makes it attractive for homeowners and technicians who need reliable, quick-acting temperature control without fuss. The single biggest reason to buy is compatibility: these thermostats are built in a Thermo-O-Disc style and are interchangeable with common Apcom-type controls, so they fit a wide range of makes and models.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh quality contacts:\u003c\/strong\u003e The metal contact construction enables faster switching and longer service life compared with lower-grade parts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdjustable temperature range:\u003c\/strong\u003e Controls water temperature from 90F to 150F to suit household preferences and safety needs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUL certified:\u003c\/strong\u003e Safety certification gives confidence that the thermostats meet recognized electrical and performance standards.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide compatibility:\u003c\/strong\u003e Designed to work with most dual element water heaters from many common brands, reducing the need to source model-specific parts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBuilt-in safety switch:\u003c\/strong\u003e An internal safety cutoff helps prevent overheating, adding a layer of protection for the tank and occupants.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComplete pair:\u003c\/strong\u003e The kit includes both the upper (KST203) and lower (KST200) thermostats needed for most dual element replacements.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWho It's For\u003c\/h2\u003e\u003cp\u003eThe kit is ideal for homeowners, plumbers, and maintenance technicians replacing thermostats on dual element electric water heaters from brands like GE, Whirlpool, Rheem, Bradford White and many Apcom-compatible models. Its UL certification and adjustable range make it suitable for households that want reliable temperature control and a safety cutoff feature.\u003c\/p\u003e\u003cp\u003eIt is not the right choice for single element heaters, specialized commercial systems that require proprietary controls, or installations that demand smart\/HomeKit-enabled temperature management. Buyers needing an exact OEM match should verify interchangeability before purchase.\u003c\/p\u003e\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eIncludes both upper and lower thermostats so users can complete a dual element replacement in one purchase.\u003c\/li\u003e\n\u003cli\u003eUL certification and built-in safety switch provide an added margin of safety during operation.\u003c\/li\u003e\n\u003cli\u003eAdjustable 90F-150F range covers typical residential hot water needs and user preference.\u003c\/li\u003e\n\u003cli\u003eInterchangeable Thermo-O-Disc\/Apcom style increases compatibility with many heater brands.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eNot suitable for single element tanks or heaters that require a different thermostat form factor.\u003c\/li\u003e\n\u003cli\u003eSome installers may prefer OEM-branded controls for a guaranteed model-specific fit.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eContents\u003c\/td\u003e\n\u003ctd\u003e1 x KST200 lower thermostat, 1 x KST203 upper thermostat\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature range\u003c\/td\u003e\n\u003ctd\u003e90F to 150F (32C to 66C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eCopper and plastic components\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCertification\u003c\/td\u003e\n\u003ctd\u003eUL certified\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eMost dual element electric water heaters; Thermo-O-Disc\/Apcom style\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVoltage\u003c\/td\u003e\n\u003ctd\u003e120V - 480V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePackage weight\u003c\/td\u003e\n\u003ctd\u003e0.5 pounds\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eOur Verdict\u003c\/h2\u003e\u003cp\u003eThe Electric Water Heater Thermostat Kit offers solid, no-frills value for anyone replacing thermostats on dual element residential water heaters. With a complete upper and lower pair, UL certification, and a practical 90F-150F adjustment range, it suits most home repair jobs and routine maintenance. Professionals and DIYers who need broad compatibility and a built-in safety switch will find it a dependable, cost-effective option.\u003c\/p\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eAre both thermostats included?\u003c\/strong\u003e\u003cbr\u003eYes, the package includes one KST200 lower thermostat and one KST203 upper thermostat.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill these fit my water heater?\u003c\/strong\u003e\u003cbr\u003eThey are Thermo-O-Disc\/Apcom style and compatible with many dual element models, but verify physical fit and mounting type against your heater before buying.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat temperature range can I set?\u003c\/strong\u003e\u003cbr\u003eThe thermostats adjust from 90F to 150F (32C to 66C) and include a built-in safety switch to help prevent overheating.\u003c\/p\u003e","brand":"TAIACE","offers":[{"title":"Default Title","offer_id":46779699003611,"sku":"B0C3Q9MPB1","price":28.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/61biM9vk2tL._AC_SL1500.jpg?v=1747587556","url":"https:\/\/gearmusthave.com\/products\/taiace-electric-water-heater-thermostat-duo-ul-certified","provider":"GearMustHave","version":"1.0","type":"link"}