{"product_id":"ct101-d-whirlpool-bath-heater-replacement","title":"CT101-D Inline Vacuum Heater Replacement | 120V 1500W Whirlpool Tub Heater","description":"\u003ch2\u003eCT101-D Inline Vacuum Heater Replacement\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eCompatible 120V 1500W Standard 7\" Whirlpool Tub Heater\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eRestore consistent water temperature to your whirlpool bathtub with this \u003cstrong\u003ecompatible replacement for the CT101-D inline vacuum heater\u003c\/strong\u003e. Designed for many whirlpool bath systems originally equipped with a \u003cstrong\u003e120V, 1500-watt, standard 7-inch inline vacuum heater\u003c\/strong\u003e, this replacement provides dependable performance while maintaining the compact footprint used in many bath installations.\u003c\/p\u003e\n\u003cp\u003eManufactured by \u003cstrong\u003eBalboa Water Group\u003c\/strong\u003e, this heater features a \u003cstrong\u003e1-1\/2-inch stainless steel heater cylinder\u003c\/strong\u003e, an integrated \u003cstrong\u003evacuum switch\u003c\/strong\u003e, and includes \u003cstrong\u003e(2) 1-1\/2-inch socket tail fittings\u003c\/strong\u003e for many inline vacuum heater applications. It is designed to \u003cstrong\u003emaintain bath water temperature\u003c\/strong\u003e during normal whirlpool operation and is \u003cstrong\u003enot intended to rapidly heat cold bath water.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003e\u003cstrong\u003eCompatibility Notice:\u003c\/strong\u003e Manufacturer names and OEM part numbers are used solely to identify product compatibility. This product is a compatible replacement solution and is not manufactured, sponsored, or endorsed by the original equipment manufacturer unless expressly stated.\u003c\/em\u003e\u003c\/p\u003e\n\u003ch3\u003eWhy Choose This Heater?\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCompatible replacement for many applications using CT101-D\u003c\/li\u003e\n\u003cli\u003eManufactured by Balboa Water Group\u003c\/li\u003e\n\u003cli\u003eStandard 7-inch heater body\u003c\/li\u003e\n\u003cli\u003eIntegrated vacuum switch\u003c\/li\u003e\n\u003cli\u003e120 Volt operation\u003c\/li\u003e\n\u003cli\u003e1500 Watt heater\u003c\/li\u003e\n\u003cli\u003e1-1\/2-inch stainless steel heater cylinder\u003c\/li\u003e\n\u003cli\u003eIncludes (2) standard 1-1\/2-inch socket tail fittings\u003c\/li\u003e\n\u003cli\u003eAutomatic thermostat helps maintain comfortable bath water temperature\u003c\/li\u003e\n\u003cli\u003eReversible installation design for many applications\u003c\/li\u003e\n\u003cli\u003eExpert Whirly Bros technical support\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHeater Style\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eInline\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eActivation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eVacuum Switch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eVoltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e115\/120 VAC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWattage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1500 Watts\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHeater Body Length\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eStandard 7 Inches\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHeater Cylinder\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1-1\/2-inch Stainless Steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePlumbing\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1-1\/2-inch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eIncluded Tail Fittings\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e(2) 1-1\/2-inch Socket Tail Fittings\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFrequency\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e60 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eApplication\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eWhirlpool Bathtubs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eCommon Whirlpool Tub Applications\u003c\/h3\u003e\n\u003cp\u003eThis compatible replacement heater is commonly found in select whirlpool bathtub systems manufactured by:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eKohler\u003c\/li\u003e\n\u003cli\u003eAmerican Standard\u003c\/li\u003e\n\u003cli\u003eAquatic Industries\u003c\/li\u003e\n\u003cli\u003eHydro Systems\u003c\/li\u003e\n\u003cli\u003eJason International\u003c\/li\u003e\n\u003cli\u003eMAAX\u003c\/li\u003e\n\u003cli\u003eAquaglass\u003c\/li\u003e\n\u003cli\u003eMTI\u003c\/li\u003e\n\u003cli\u003eNeptune\u003c\/li\u003e\n\u003cli\u003eLasco\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCompatibility varies by manufacturer, model, and production year.\u003c\/strong\u003e Always verify your existing heater specifications before ordering.\u003c\/p\u003e\n\u003ch3\u003eCommon Replacement Part Numbers\u003c\/h3\u003e\n\u003cp\u003eThis heater may be compatible with applications using:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCT101-D\u003c\/li\u003e\n\u003cli\u003ePH101-15UV\u003c\/li\u003e\n\u003cli\u003ePH10115UV\u003c\/li\u003e\n\u003cli\u003e2-00-7516\u003c\/li\u003e\n\u003cli\u003e46-355-1054\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eOur compatibility database continues to expand as additional verified OEM part numbers become available.\u003c\/p\u003e\n\u003ch3\u003eHow Does a Vacuum Heater Work?\u003c\/h3\u003e\n\u003cp\u003eUnlike pressure-activated heaters, a \u003cstrong\u003evacuum heater\u003c\/strong\u003e monitors water flow using a vacuum switch. When the whirlpool pump begins circulating water, the vacuum switch allows the heater to operate under proper flow conditions, helping maintain safe and reliable performance.\u003c\/p\u003e\n\u003cp\u003eKnowing whether your existing heater uses a \u003cstrong\u003evacuum switch\u003c\/strong\u003e or a \u003cstrong\u003epressure switch\u003c\/strong\u003e is one of the most important steps in selecting the correct replacement.\u003c\/p\u003e\n\u003ch3\u003eBefore Ordering\u003c\/h3\u003e\n\u003cp\u003ePlease verify your existing heater has:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e115\/120 Volt operation\u003c\/li\u003e\n\u003cli\u003e1500 Watt rating\u003c\/li\u003e\n\u003cli\u003eStandard 7-inch heater body\u003c\/li\u003e\n\u003cli\u003eInline configuration\u003c\/li\u003e\n\u003cli\u003eVacuum switch\u003c\/li\u003e\n\u003cli\u003e1-1\/2-inch stainless steel heater cylinder\u003c\/li\u003e\n\u003cli\u003e1-1\/2-inch plumbing\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIf you're unsure, send Whirly Bros photos of your heater label, plumbing connections, and wiring. We'll help identify the correct compatible replacement before you order.\u003c\/p\u003e\n\u003ch3\u003eCommon Signs Your Heater Has Failed\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eWater cools quickly during use\u003c\/li\u003e\n\u003cli\u003eHeater will not energize\u003c\/li\u003e\n\u003cli\u003eVacuum switch no longer activates\u003c\/li\u003e\n\u003cli\u003eCircuit breaker trips\u003c\/li\u003e\n\u003cli\u003eHeater housing leaks\u003c\/li\u003e\n\u003cli\u003eCorrosion or mineral buildup\u003c\/li\u003e\n\u003cli\u003eBurned electrical terminals\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eIs this an original CT101-D heater?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNo. This is a \u003cstrong\u003ecompatible replacement heater\u003c\/strong\u003e designed for compatible applications using the CT101-D part number.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this heater fit every CT101-D application?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNot necessarily. Manufacturers occasionally changed plumbing and electrical configurations during production. Always compare your existing heater before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the difference between a pressure heater and a vacuum heater?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA pressure heater uses a pressure switch to verify water flow, while a vacuum heater uses a vacuum switch. They are not interchangeable unless the entire control system is compatible.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill this heater warm cold bath water?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNo. Like the original heater design, it is intended to \u003cstrong\u003emaintain bath water temperature during operation\u003c\/strong\u003e, not rapidly heat cold water.\u003c\/p\u003e\n\u003ch3\u003eNot Sure Which Heater You Need?\u003c\/h3\u003e\n\u003cp\u003eWhirlpool bathtub heaters are available in several different configurations. Although they may appear similar, \u003cstrong\u003etee-style, inline pressure, and inline vacuum heaters are not always interchangeable.\u003c\/strong\u003e Always verify your existing heater configuration before ordering.\u003c\/p\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eLooking For?\u003c\/th\u003e\n\u003cth\u003eRelated Replacement\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTee-Style Heater\u003c\/td\u003e\n\u003ctd\u003e\u003cspan style=\"color: rgb(43, 0, 255);\"\u003e\u003cstrong\u003e\u003ca href=\"\/products\/ct100-blp-et-whirlpool-tub-heater-replacement-1500w-120v-tee\" style=\"color: rgb(43, 0, 255);\"\u003eCT100-BLP-ET Whirlpool Tub Heater Replacement\u003c\/a\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInline Pressure Heater\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan style=\"color: rgb(43, 0, 255);\"\u003e\u003ca href=\"\/products\/ph101-15up-inline-pressure-whirlpool-tub-heater-1500w-120v\" style=\"color: rgb(43, 0, 255);\"\u003ePH101-15UP Inline Pressure Whirlpool Tub Heater Replacement\u003c\/a\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003eLooking for a Tee-Style Heater?\u003c\/strong\u003e\u003cbr\u003eIf your whirlpool bathtub uses a tee-style heater, you may need our compatible replacement for the \u003cstrong\u003e\u003cspan style=\"color: rgb(43, 0, 255);\"\u003e\u003ca href=\"\/products\/ct100-blp-et-whirlpool-tub-heater-replacement-1500w-120v-tee\" style=\"color: rgb(43, 0, 255);\"\u003eCT100-BLP-ET Whirlpool Tub Heater Replacement\u003c\/a\u003e.\u003c\/span\u003e\u003c\/strong\u003e Tee heaters install differently than inline heaters and should not be substituted unless the original system is designed for that configuration.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eLooking for an Inline Pressure Heater?\u003c\/strong\u003e\u003cbr\u003eIf your whirlpool bathtub uses a \u003cstrong\u003epressure switch\u003c\/strong\u003e rather than a vacuum switch, you may need our compatible replacement for the \u003cstrong\u003e\u003cspan style=\"color: rgb(43, 0, 255);\"\u003e\u003ca href=\"\/products\/ph101-15up-inline-pressure-whirlpool-tub-heater-1500w-120v\" style=\"color: rgb(43, 0, 255);\"\u003ePH101-15UP Inline Pressure Whirlpool Tub Heater Replacement\u003c\/a\u003e\u003c\/span\u003e\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3\u003eNeed Help Identifying Your Heater?\u003c\/h3\u003e\n\u003cp\u003eIf you're unsure which heater your whirlpool bathtub uses, contact Whirly Bros before ordering. Simply send us:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ePhotos of your existing heater\u003c\/li\u003e\n\u003cli\u003eThe heater label\u003c\/li\u003e\n\u003cli\u003ePlumbing connections\u003c\/li\u003e\n\u003cli\u003eWiring connections\u003c\/li\u003e\n\u003cli\u003eWhirlpool bathtub manufacturer (if known)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWe'll help identify the correct compatible replacement before you purchase.\u003c\/p\u003e\n\u003ch3\u003eWhy Buy From Whirly Bros?\u003c\/h3\u003e\n\u003cp\u003eWhirly Bros specializes in whirlpool bathtub replacement parts and retrofit solutions. Our team helps customers identify compatible replacement heaters, pumps, blowers, controls, and accessories before they order, reducing costly mistakes and helping restore older whirlpool systems with confidence.\u003c\/p\u003e\n\u003ch3\u003eTrademark Disclaimer\u003c\/h3\u003e\n\u003cp\u003e\u003cem\u003eAll manufacturer names, trademarks, and OEM part numbers are used solely for identification and compatibility purposes. Whirly Bros is an independent supplier and is not affiliated with or endorsed by the original equipment manufacturer unless expressly stated.\u003c\/em\u003e\u003c\/p\u003e","brand":"BALBOA WATER GROUP","offers":[{"title":"Default Title","offer_id":54982609797442,"sku":"9321+21","price":149.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0858\/9377\/5682\/files\/balboa-water-group-water-heaters-default-title-balboa-inline-vacuum-whirlpool-heater-12-amp-120v-1-5kw-39553140883778_623655bc-f56b-4b08-a7bc-1b9052fc9eb4.png?v=1783998364","url":"https:\/\/www.whirlybros.com\/products\/ct101-d-whirlpool-bath-heater-replacement","provider":"Whirly Bros","version":"1.0","type":"link"}