{"product_id":"waterboost-atx-250h-4-5-bar-horizontal-whole-house-mains-pressure-booster","title":"WaterBoost ATX-250H 4.5 bar Horizontal Whole-House Mains Pressure Booster","description":"\u003cdiv style=\"font-family: 'Helvetica Neue',Arial,sans-serif; color: #0e1117; max-width: 880px; margin: 0 auto;\"\u003e\n\u003cp style=\"font-size: clamp(13px,1.1vw,15px); color: #3c3f47; line-height: 1.7; margin: 0 0 10px 0;\"\u003eThe \u003cstrong style=\"color: #0e1117;\"\u003eWaterBoost ATX-250H 4.5\u003c\/strong\u003e is the mid-range high-pressure horizontal model in the ATX integrated accumulator booster range, built for lofts, eaves, under-bath voids and low cupboards. It connects directly to the incoming cold water mains, combining a \u003cstrong style=\"color: #0e1117;\"\u003e250-litre sealed horizontal accumulator vessel\u003c\/strong\u003e with the \u003cstrong style=\"color: #0e1117;\"\u003eWB-Compact 4.5 variable speed pump\u003c\/strong\u003e mounted beside or in front of it — charging the vessel up to \u003cstrong style=\"color: #0e1117;\"\u003e4.5 bar\u003c\/strong\u003e and boosting both pressure and flow throughout the property the moment a tap or shower is opened. No break tank, no overflow arrangement, just two water connections required.\u003c\/p\u003e\n\u003cp style=\"font-size: clamp(13px,1.1vw,15px); color: #3c3f47; line-height: 1.7; margin: 0 0 10px 0;\"\u003eThe system delivers a \u003cstrong style=\"color: #0e1117;\"\u003epeak burst flow of up to 80 l\/min\u003c\/strong\u003e and up to \u003cstrong style=\"color: #0e1117;\"\u003e24.5 l\/min at up to 4.5 bar\u003c\/strong\u003e for up to 11 minutes — before settling to a continuous boosted flow of 12 l\/min at 3.0 bar until the vessel recharges. The 250-litre vessel provides \u003cstrong style=\"color: #0e1117;\"\u003e150 litres of useable working capacity\u003c\/strong\u003e. Variable speed inverter technology means the pump only generates the pressure your mains can’t already deliver, keeping running costs to a genuine minimum. Operation is measured at a quiet \u003cstrong style=\"color: #0e1117;\"\u003e40 dB(A)\u003c\/strong\u003e, and the pump sits on a \u003cstrong style=\"color: #0e1117;\"\u003eWaterBoost QuietPad\u003c\/strong\u003e anti-vibration base so nothing transmits through joists or floorboards. WiFi via the \u003cstrong style=\"color: #0e1117;\"\u003eDAB H2D app\u003c\/strong\u003e enables remote monitoring and control, with a Power Shower mode for when you want everything the system has. A mains bypass fits in seconds using 2 clips if the unit ever requires attention.\u003c\/p\u003e\n\u003cp style=\"font-size: clamp(13px,1.1vw,15px); color: #3c3f47; line-height: 1.7; margin: 0 0 20px 0;\"\u003eWRAS approved product — continuous flow stays within the water authority limit of 12 l\/min. Fully sealed system — zero air contact with stored water, no hygiene management required. Completely maintenance free. Suited to 2-4 bed homes upwards with two bathrooms, rain heads, body jets, top-floor bathrooms or an unvented cylinder that wants more than 3 bar can give. \u003cstrong style=\"color: #0e1117;\"\u003e5-year tank warranty, 3-year pump warranty\u003c\/strong\u003e. If 3.2 bar is enough, see the standard ATX-250H; step up to the ATX-300H 4.5 for larger homes, or down to the ATX-200H 4.5 for a single bathroom.\u003c\/p\u003e\n\u003cdiv style=\"display: grid; grid-template-columns: repeat(auto-fit,minmax(110px,1fr)); gap: 1px; background: #e2e4ea; border: 1px solid #e2e4ea; border-radius: 10px; overflow: hidden; margin-bottom: 14px;\"\u003e\n\u003cdiv style=\"background: #fff; padding: 11px 12px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: clamp(18px,2.4vw,22px); font-weight: 600; color: #0e1117; line-height: 1;\"\u003e4.5\u003cspan style=\"font-size: 10px; font-weight: 400; color: #757a88; margin-left: 2px;\"\u003ebar\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size: 10px; color: #757a88; margin-top: 3px; text-transform: uppercase; letter-spacing: 0.06em;\"\u003eMax pressure\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #fff; padding: 11px 12px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: clamp(18px,2.4vw,22px); font-weight: 600; color: #0e1117; line-height: 1;\"\u003e80\u003cspan style=\"font-size: 10px; font-weight: 400; color: #757a88; margin-left: 2px;\"\u003el\/min\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size: 10px; color: #757a88; margin-top: 3px; text-transform: uppercase; letter-spacing: 0.06em;\"\u003ePeak flow\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #fff; padding: 11px 12px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: clamp(18px,2.4vw,22px); font-weight: 600; color: #0e1117; line-height: 1;\"\u003e150\u003cspan style=\"font-size: 10px; font-weight: 400; color: #757a88; margin-left: 2px;\"\u003eL\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size: 10px; color: #757a88; margin-top: 3px; text-transform: uppercase; letter-spacing: 0.06em;\"\u003eUseable capacity\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #1a5fb4; padding: 11px 12px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: clamp(18px,2.4vw,22px); font-weight: 600; color: #fff; line-height: 1;\"\u003e5\u003cspan style=\"font-size: 10px; font-weight: 400; margin: 0 4px 0 2px;\"\u003eyr\u003c\/span\u003e·\u003cspan style=\"margin-left: 4px;\"\u003e3\u003c\/span\u003e\u003cspan style=\"font-size: 10px; font-weight: 400; margin-left: 2px;\"\u003eyr\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size: 10px; color: #fff; margin-top: 3px; text-transform: uppercase; letter-spacing: 0.06em;\"\u003eTank · pump warranty\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; gap: 5px; margin-bottom: 20px;\"\u003e\n\u003cspan style=\"display: inline-flex; align-items: center; padding: 4px 9px; border-radius: 20px; background: #e8f0fb; color: #1a5fb4; font-size: 11px; font-weight: 500; border: 1px solid #c5d8f5;\"\u003eHorizontal · low profile\u003c\/span\u003e \u003cspan style=\"display: inline-flex; align-items: center; padding: 4px 9px; border-radius: 20px; background: #e8f0fb; color: #1a5fb4; font-size: 11px; font-weight: 500; border: 1px solid #c5d8f5;\"\u003eUp to 4.5 bar\u003c\/span\u003e \u003cspan style=\"display: inline-flex; align-items: center; padding: 4px 9px; border-radius: 20px; background: #e8f0fb; color: #1a5fb4; font-size: 11px; font-weight: 500; border: 1px solid #c5d8f5;\"\u003eWiFi · H2D app\u003c\/span\u003e \u003cspan style=\"display: inline-flex; align-items: center; padding: 4px 9px; border-radius: 20px; background: #e4f2eb; color: #1d6f42; font-size: 11px; font-weight: 500; border: 1px solid #b6dfc7;\"\u003eWRAS approved\u003c\/span\u003e \u003cspan style=\"display: inline-flex; align-items: center; padding: 4px 9px; border-radius: 20px; background: #e4f2eb; color: #1d6f42; font-size: 11px; font-weight: 500; border: 1px solid #b6dfc7;\"\u003eZero maintenance\u003c\/span\u003e \u003cspan style=\"display: inline-flex; align-items: center; padding: 4px 9px; border-radius: 20px; background: #e4f2eb; color: #1d6f42; font-size: 11px; font-weight: 500; border: 1px solid #b6dfc7;\"\u003eSealed — no air contact\u003c\/span\u003e \u003cspan style=\"display: inline-flex; align-items: center; padding: 4px 9px; border-radius: 20px; background: #f5f6f8; color: #3c3f47; font-size: 11px; font-weight: 500; border: 1px solid #e2e4ea;\"\u003eVariable speed\u003c\/span\u003e \u003cspan style=\"display: inline-flex; align-items: center; padding: 4px 9px; border-radius: 20px; background: #f5f6f8; color: #3c3f47; font-size: 11px; font-weight: 500; border: 1px solid #e2e4ea;\"\u003e250L · 150L useable\u003c\/span\u003e \u003cspan style=\"display: inline-flex; align-items: center; padding: 4px 9px; border-radius: 20px; background: #f5f6f8; color: #3c3f47; font-size: 11px; font-weight: 500; border: 1px solid #e2e4ea;\"\u003eNo overflow\u003c\/span\u003e \u003cspan style=\"display: inline-flex; align-items: center; padding: 4px 9px; border-radius: 20px; background: #f5f6f8; color: #3c3f47; font-size: 11px; font-weight: 500; border: 1px solid #e2e4ea;\"\u003eDry run protection\u003c\/span\u003e \u003cspan style=\"display: inline-flex; align-items: center; padding: 4px 9px; border-radius: 20px; background: #f5f6f8; color: #3c3f47; font-size: 11px; font-weight: 500; border: 1px solid #e2e4ea;\"\u003eQuietPad fitted\u003c\/span\u003e \u003cspan style=\"display: inline-flex; align-items: center; padding: 4px 9px; border-radius: 20px; background: #f5f6f8; color: #3c3f47; font-size: 11px; font-weight: 500; border: 1px solid #e2e4ea;\"\u003eBypass fits with 2 clips\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; gap: 8px; margin: 0 0 24px 0;\"\u003e\n\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1025\/4411\/3996\/files\/WaterBoost-ATX-250H-4.5-Datasheet.pdf?v=1789385945\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan style=\"color: #ffffff;\"\u003e\u003cspan style=\"flex: 1 1 160px; display: inline-block; text-align: center; background: rgb(26, 95, 180); font-size: 13px; padding: 12px 18px; border-radius: 8px; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;\"\u003e\u003cb\u003eData Sheet\u003c\/b\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/a\u003e \u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1025\/4411\/3996\/files\/wb-atx-manual.pdf?v=1788243530\" rel=\"noopener\" target=\"_blank\"\u003e\u003cspan style=\"color: #ffffff;\"\u003e\u003cspan style=\"flex: 1 1 160px; display: inline-block; text-align: center; background: rgb(26, 95, 180); font-size: 13px; padding: 12px 18px; border-radius: 8px; text-decoration-thickness: initial; text-decoration-style: initial; text-decoration-color: initial;\"\u003e\u003cb\u003eManual\u003c\/b\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/a\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"WaterBoost","offers":[{"title":"Default Title","offer_id":58788570235212,"sku":null,"price":1370.39,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1025\/4411\/3996\/files\/atx_h_4.5.png?v=1789385377","url":"https:\/\/www.waterboost.co.uk\/products\/waterboost-atx-250h-4-5-bar-horizontal-whole-house-mains-pressure-booster","provider":"WaterBoost","version":"1.0","type":"link"}