{"product_id":"40kw-230v-flow-thru-heater-73994","title":"4.0KW 230V Flow Thru Heater 73994","description":"\u003cp\u003eThis 4.0KW 230V flow-through heater assembly is designed for Caldera Highland series spas, delivering reliable heating performance with stainless steel construction. Operating at 230-240V with 4000 watts of heating power, this OEM replacement part ensures your spa maintains optimal water temperature efficiently. The flow-through design allows water to circulate directly through the heating element for consistent heat distribution.\u003c\/p\u003e\u003cp\u003eBubbles Supply guarantees this heater is an exact fit for your Caldera spa, backed by our 1-year warranty for complete peace of mind. We ship same-day on orders placed before our cutoff time, getting your spa back to perfect operating condition quickly. This genuine OEM part addresses common heating issues including no heat (NH) and overheating (OH) problems. Always verify your existing heater's specifications and voltage requirements before installation to ensure proper fitment.\u003c\/p\u003e\n\u003c!-- p11:start --\u003e\u003cdiv class=\"related-links\"\u003e\n\u003ch2\u003eRelated parts \u0026amp; guides\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/product\/40kw-230v-2-x-15-flow-thru-m7-heater-g7412\"\u003e4.0KW 230V 2\" x 15\" Flow Thru M7 Heater G7412\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/product\/40kw-230v-flow-thru-heater-e2400-1001\"\u003e4.0KW 230V Flow-Thru Heater E2400-1001\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/product\/dm-vita-30kw-230v-flow-thru-heater-26-0024-4s-k\"\u003eDM Vita 3.0KW 230V Flow Thru Heater 26-0024-4S-K\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/collection\/heaters\"\u003eSee all Heaters\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/pages\/knowledge\/why-your-spa-heater-is-not-working\"\u003eWhy your spa heater is not working\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\u003c!-- p11:end --\u003e","brand":"Caldera Spas","offers":[{"title":"Default Title","offer_id":50249040560485,"sku":"73994","price":699.07,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0883\/2162\/2373\/files\/40kw-230v-flow-thru-heater-73994-73994-1_955f6fdc-d628-44d5-a63b-b74473462ff9.jpg?v=1779742333","url":"https:\/\/checkout.bubblessupply.com\/products\/40kw-230v-flow-thru-heater-73994","provider":"Bubbles Supply","version":"1.0","type":"link"}