{"product_id":"26-58203-k","title":"Balboa VS100 10\" 4.0kW Flo-Thru Heater (26-58203-K)","description":"\u003cp\u003eBalboa VS100 10\" 4.0kW Flo-Thru Heater (26-58203-K) is a compact replacement heater designed for compatible VS100 spa control applications. Its shorter 10\" body distinguishes it from the more common 15\" heater format, making physical dimensions especially important when identifying the correct replacement for the existing plumbing layout.\u003c\/p\u003e\u003cp\u003eThe VS100 application uses a compact equipment arrangement, making heater length and plumbing fit especially important. A shorter heater cannot be assumed to interchange with a standard 15\" assembly simply because the wattage is similar; the complete physical and electrical configuration needs to match the original spa equipment.\u003c\/p\u003e\u003cp\u003eThe 4.0kW rating is a common full-size spa heating specification, but output alone does not determine interchangeability. Two 4.0kW heaters may use different control families, sensor arrangements, wiring interfaces, mounting details, or plumbing positions. Verifying those details before installation helps prevent an otherwise similar-looking heater from becoming an incorrect replacement.\u003c\/p\u003e\u003cp\u003eProper fitment begins with verification. Compare the existing heater’s part number, length, rated output, sensor or control connections, plumbing orientation, and electrical requirements before ordering. Spa heaters are not universally interchangeable, and taking a few minutes to confirm these details can reduce installation delays, unnecessary returns, and repeat service calls.\u003c\/p\u003e\u003cp\u003eOnce correctly matched and installed, the Balboa 26-58203-K can help restore dependable water heating, steadier temperature maintenance, and the day-to-day comfort expected from a properly operating spa.\u003c\/p\u003e\u003cul\u003e\n  \u003cli\u003eDesigned for compatible Balboa VS100 spa control applications\u003c\/li\u003e\n  \u003cli\u003e4.0kW rated heating output\u003c\/li\u003e\n  \u003cli\u003e10\" heater configuration for correct physical fitment\u003c\/li\u003e\n  \u003cli\u003eMatch original electrical, plumbing, and control-system requirements\u003c\/li\u003e\n  \u003cli\u003eSupports dependable temperature recovery when correctly matched and installed\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Therm Products","offers":[{"title":"Default Title","offer_id":49079914922139,"sku":"26-58203-K","price":159.97,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1751\/9347\/files\/26-58203-K.jpg?v=1784868215","url":"https:\/\/www.bathandspaparts.com\/products\/26-58203-k","provider":"Bath and Spa Parts Online","version":"1.0","type":"link"}