{"product_id":"baxi-800-heat-only-gas-boiler-819-825-830-7898832-7890711-7749868-7749869","title":"Baxi 800 Heat Only Gas Boiler - 819 \/ 825 \/ 830 (7898832 \/ 7890711 \/ 7749868 \/ 7749869)","description":"\u003cdiv style=\"font-size: 16px; max-width: 900px; margin: 0 auto; font-family: Arial,Helvetica,sans-serif; color: #222; line-height: 1.6;\"\u003e\n\u003cp style=\"margin: 0 0 18px 0;\"\u003eThe \u003cstrong\u003eBaxi 800 Heat\u003c\/strong\u003e is a \u003cstrong\u003ewall-hung condensing gas heat-only (regular) boiler\u003c\/strong\u003e available in three outputs — \u003cstrong\u003e19 kW (819), 25 kW (825), and 30 kW (830)\u003c\/strong\u003e — designed for homes with an \u003cstrong\u003eexisting fully pumped open vent or sealed heating system\u003c\/strong\u003e with a separate hot water cylinder and cold water storage tank. All three models carry a \u003cstrong\u003e10-year parts and labour warranty\u003c\/strong\u003e, include a factory-supplied \u003cstrong\u003eAdey MagnaClean Micro2 magnetic system filter\u003c\/strong\u003e, and are rated \u003cstrong\u003eErP A at 93% efficiency\u003c\/strong\u003e. A \u003cstrong\u003etop or rear in-case flue option\u003c\/strong\u003e, lift weights from \u003cstrong\u003e17.4 kg\u003c\/strong\u003e (816\/825), no requirement for a pump overrun or permanent live, and compatibility with the Megaflo Eco cylinder range make the 800 Heat the professional's choice for straightforward like-for-like replacement of older regular boilers.\u003c\/p\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; gap: 12px; margin: 0 0 24px 0;\"\u003e\n\u003cdiv style=\"flex: 1; min-width: 130px; background: #008377CF; color: #fff; border-radius: 6px; padding: 14px 12px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: bold; line-height: 1.1;\"\u003e93%\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; margin-top: 4px;\"\u003eSeasonal Efficiency\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 130px; background: #008377CF; color: #fff; border-radius: 6px; padding: 14px 12px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: bold; line-height: 1.1;\"\u003eErP A\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; margin-top: 4px;\"\u003eEnergy Rating\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 130px; background: #008377CF; color: #fff; border-radius: 6px; padding: 14px 12px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: bold; line-height: 1.1;\"\u003e10 Year\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; margin-top: 4px;\"\u003eParts \u0026amp; Labour Warranty\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 130px; background: #008377CF; color: #fff; border-radius: 6px; padding: 14px 12px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: bold; line-height: 1.1;\"\u003eAdey Micro2\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; margin-top: 4px;\"\u003eFilter Included\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex: 1; min-width: 130px; background: #008377CF; color: #fff; border-radius: 6px; padding: 14px 12px; text-align: center;\"\u003e\n\u003cdiv style=\"font-size: 22px; font-weight: bold; line-height: 1.1;\"\u003eH₂-Ready\u003c\/div\u003e\n\u003cdiv style=\"font-size: 12px; margin-top: 4px;\"\u003eUp to 20% Hydrogen\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #fff5f5; border-left: 5px solid #cc0000; padding: 14px 18px; border-radius: 4px; margin: 0 0 14px 0;\"\u003e\n\u003cstrong style=\"color: #cc0000;\"\u003eGas Safe Registration Required\u003c\/strong\u003e — Installation, commissioning, conversion, and all maintenance must be carried out by a \u003cstrong\u003eGas Safe registered engineer\u003c\/strong\u003e, in line with Building Regulations and the Benchmark Commissioning Checklist.\u003c\/div\u003e\n\u003cdiv style=\"background: #e6f4f3; border-left: 5px solid #008377; padding: 14px 18px; border-radius: 4px; margin: 0 0 14px 0;\"\u003e\n\u003cstrong style=\"color: #005c54;\"\u003eHeat-Only (Regular) Boiler — Cylinder \u0026amp; Cold Water Tank Required\u003c\/strong\u003e — The Baxi 800 Heat requires a \u003cstrong\u003eseparate hot water storage cylinder\u003c\/strong\u003e (e.g. Megaflo Eco or Baxi cylinder) and a \u003cstrong\u003ecold water storage tank in the loft\u003c\/strong\u003e. It is the correct replacement for existing open vent systems and is \u003cstrong\u003enot\u003c\/strong\u003e a combi or system boiler.\u003c\/div\u003e\n\u003cdiv style=\"background: #fffbea; border-left: 5px solid #e6a817; padding: 14px 18px; border-radius: 4px; margin: 0 0 14px 0;\"\u003e\n\u003cstrong style=\"color: #b07d00;\"\u003eChoosing the Right Output\u003c\/strong\u003e — The \u003cstrong\u003e819 (19 kW)\u003c\/strong\u003e is ideal for medium homes, filling the gap between the 7-year 600 series 619 and the 25 kW 825 — a newer addition to the 800 Heat range. The \u003cstrong\u003e825 (25 kW)\u003c\/strong\u003e suits medium-to-large homes, and the \u003cstrong\u003e830 (30 kW)\u003c\/strong\u003e is for large homes or properties with high simultaneous heat and hot water demand.\u003c\/div\u003e\n\u003cdiv style=\"display: grid; grid-template-columns: repeat(auto-fill,minmax(260px,1fr)); gap: 16px; margin: 0 0 28px 0;\"\u003e\n\u003cdiv style=\"background: #f0faf9; border: 1px solid #c8e6e3; border-radius: 6px; padding: 18px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377; border-bottom: 2px solid #008377; padding-bottom: 6px; margin-bottom: 10px;\"\u003e10-Year Parts \u0026amp; Labour Warranty\u003c\/div\u003e\n\u003cp style=\"margin: 0; font-size: 15px;\"\u003eAll 800 Heat models carry a \u003cstrong\u003e10-year parts and labour warranty\u003c\/strong\u003e — significantly longer than the 7-year warranty on the 600 Heat range. Register at baxi.co.uk\/registration within \u003cstrong\u003e30 days of installation\u003c\/strong\u003e and maintain an \u003cstrong\u003eannual service\u003c\/strong\u003e to keep full warranty coverage.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f0faf9; border: 1px solid #c8e6e3; border-radius: 6px; padding: 18px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377; border-bottom: 2px solid #008377; padding-bottom: 6px; margin-bottom: 10px;\"\u003eAdey MagnaClean Micro2 Filter — In the Box\u003c\/div\u003e\n\u003cp style=\"margin: 0; font-size: 15px;\"\u003eEvery 800 Heat ships with a \u003cstrong\u003ecompact Adey MagnaClean Micro2 magnetic system filter\u003c\/strong\u003e, protecting the boiler and heating circuit from sludge and magnetite from the very first day of operation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f0faf9; border: 1px solid #c8e6e3; border-radius: 6px; padding: 18px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377; border-bottom: 2px solid #008377; padding-bottom: 6px; margin-bottom: 10px;\"\u003eNo Pump Overrun or Permanent Live Required\u003c\/div\u003e\n\u003cp style=\"margin: 0; font-size: 15px;\"\u003eThe 800 Heat does not need a pump overrun or a permanent live electrical connection, simplifying installation and making it a straightforward \u003cstrong\u003elike-for-like replacement\u003c\/strong\u003e for old standard-efficiency regular boilers without electrical rewiring.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f0faf9; border: 1px solid #c8e6e3; border-radius: 6px; padding: 18px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377; border-bottom: 2px solid #008377; padding-bottom: 6px; margin-bottom: 10px;\"\u003eTop or Rear In-Case Flue Option\u003c\/div\u003e\n\u003cp style=\"margin: 0; font-size: 15px;\"\u003eThe 800 Heat offers a choice of \u003cstrong\u003ecentral top flue or in-case rear flue\u003c\/strong\u003e, giving installers flexibility in routing flue pipework and enabling a \u003cstrong\u003eneater installation finish\u003c\/strong\u003e when the boiler is located inside a cupboard with a rear wall accessible from outside.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f0faf9; border: 1px solid #c8e6e3; border-radius: 6px; padding: 18px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377; border-bottom: 2px solid #008377; padding-bottom: 6px; margin-bottom: 10px;\"\u003eOpen Vent or Sealed System Compatible\u003c\/div\u003e\n\u003cp style=\"margin: 0; font-size: 15px;\"\u003eThe 800 Heat can be installed on both \u003cstrong\u003efully pumped open vent systems\u003c\/strong\u003e (traditional gravity-fed) and \u003cstrong\u003esealed systems\u003c\/strong\u003e, making it the most versatile replacement option for existing regular boiler installations.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f0faf9; border: 1px solid #c8e6e3; border-radius: 6px; padding: 18px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377; border-bottom: 2px solid #008377; padding-bottom: 6px; margin-bottom: 10px;\"\u003eCompatible with Megaflo Eco Cylinders\u003c\/div\u003e\n\u003cp style=\"margin: 0; font-size: 15px;\"\u003eThe 800 Heat is specifically \u003cstrong\u003ecompatible with the market-leading Megaflo Eco unvented hot water cylinder range\u003c\/strong\u003e, enabling installers to upgrade the entire heating and hot water system to high efficiency in a single visit.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f0faf9; border: 1px solid #c8e6e3; border-radius: 6px; padding: 18px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377; border-bottom: 2px solid #008377; padding-bottom: 6px; margin-bottom: 10px;\"\u003eNatural Gas \u0026amp; LPG — No Conversion Kit\u003c\/div\u003e\n\u003cp style=\"margin: 0; font-size: 15px;\"\u003eAll three output models can be \u003cstrong\u003emanually converted between natural gas (G20) and LPG (G31)\u003c\/strong\u003e by a Gas Safe engineer without a separate conversion kit, making the 800 Heat equally suitable for mains gas and off-grid LPG installations.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f0faf9; border: 1px solid #c8e6e3; border-radius: 6px; padding: 18px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377; border-bottom: 2px solid #008377; padding-bottom: 6px; margin-bottom: 10px;\"\u003eHydrogen-Blend Ready\u003c\/div\u003e\n\u003cp style=\"margin: 0; font-size: 15px;\"\u003eThe 800 Heat is \u003cstrong\u003ecertified for use on natural gas blended with up to 20% hydrogen (H₂)\u003c\/strong\u003e, ensuring the installation remains fully compliant as UK gas grid decarbonisation progresses.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #f0faf9; border: 1px solid #c8e6e3; border-radius: 6px; padding: 18px;\"\u003e\n\u003cdiv style=\"font-weight: bold; color: #008377; border-bottom: 2px solid #008377; padding-bottom: 6px; margin-bottom: 10px;\"\u003eExtremely Quiet Operation\u003c\/div\u003e\n\u003cp style=\"margin: 0; font-size: 15px;\"\u003eThe 800 Heat range is engineered for \u003cstrong\u003every quiet operation\u003c\/strong\u003e, making it well-suited to installations in habitable rooms, utility rooms, or anywhere noise levels are a concern.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #008377CF; color: #fff; font-weight: bold; padding: 12px 16px; border-radius: 6px 6px 0 0; font-size: 15px; margin-top: 8px;\"\u003eTechnical Specifications\u003c\/div\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; margin-bottom: 28px; font-size: 14px;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"background: #005c54; color: #fff;\"\u003e\n\u003cth style=\"padding: 10px 12px; text-align: left; width: 36%;\"\u003eSpecification\u003c\/th\u003e\n\u003cth style=\"padding: 10px 12px; text-align: center;\"\u003e819 Heat\u003c\/th\u003e\n\u003cth style=\"padding: 10px 12px; text-align: center;\"\u003e825 Heat\u003c\/th\u003e\n\u003cth style=\"padding: 10px 12px; text-align: center;\"\u003e830 Heat\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr style=\"background: #f0faf9;\"\u003e\n\u003ctd style=\"padding: 9px 12px; font-weight: 600;\"\u003eBaxi Part Number (MPN)\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center;\"\u003e7898832 (NG) \/ 7890711 (LPG)\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center;\"\u003e7749868\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center;\"\u003e7749869\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #fff;\"\u003e\n\u003ctd style=\"padding: 9px 12px; font-weight: 600;\"\u003eHeat Output (kW)\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center;\"\u003e19 kW\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center;\"\u003e25 kW\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center;\"\u003e30 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f0faf9;\"\u003e\n\u003ctd style=\"padding: 9px 12px; font-weight: 600;\"\u003eBoiler Type\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center;\"\u003eWall-hung condensing gas heat-only (regular) boiler\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center;\"\u003e\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center;\"\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #fff;\"\u003e\n\u003ctd style=\"padding: 9px 12px; font-weight: 600;\"\u003eSeasonal Efficiency\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center;\"\u003e93%\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center;\"\u003e93%\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center;\"\u003e93%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f0faf9;\"\u003e\n\u003ctd style=\"padding: 9px 12px; font-weight: 600;\"\u003eErP Energy Rating\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center;\"\u003eA\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center;\"\u003eA\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center;\"\u003eA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #fff;\"\u003e\n\u003ctd style=\"padding: 9px 12px; font-weight: 600;\"\u003eGas Type\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center;\"\u003eNG (G20) \/ LPG (G31)\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center;\"\u003eNG (G20) \/ LPG (G31)\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center;\"\u003eNG (G20) \/ LPG (G31)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f0faf9;\"\u003e\n\u003ctd style=\"padding: 9px 12px; font-weight: 600;\"\u003eHydrogen Compatibility\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center;\"\u003eUp to 20% H₂\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center;\"\u003eUp to 20% H₂\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center;\"\u003eUp to 20% H₂\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #fff;\"\u003e\n\u003ctd style=\"padding: 9px 12px; font-weight: 600;\"\u003eSystem Type\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center;\"\u003eOpen vent or sealed\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center;\"\u003eOpen vent or sealed\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center;\"\u003eOpen vent or sealed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f0faf9;\"\u003e\n\u003ctd style=\"padding: 9px 12px; font-weight: 600;\"\u003eFlue Options\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center;\"\u003eCentral top or in-case rear\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center;\"\u003eCentral top or in-case rear\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center;\"\u003eCentral top or in-case rear\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #fff;\"\u003e\n\u003ctd style=\"padding: 9px 12px; font-weight: 600;\"\u003ePump Overrun Required\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center;\"\u003eNo\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center;\"\u003eNo\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center;\"\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f0faf9;\"\u003e\n\u003ctd style=\"padding: 9px 12px; font-weight: 600;\"\u003ePermanent Live Required\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center;\"\u003eNo\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center;\"\u003eNo\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center;\"\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #fff;\"\u003e\n\u003ctd style=\"padding: 9px 12px; font-weight: 600;\"\u003eIncluded Filter\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center;\"\u003eAdey Micro2\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center;\"\u003eAdey Micro2\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center;\"\u003eAdey Micro2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f0faf9;\"\u003e\n\u003ctd style=\"padding: 9px 12px; font-weight: 600;\"\u003eCylinder Compatibility\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center;\"\u003eMegaflo Eco; Baxi cylinders\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center;\"\u003eMegaflo Eco; Baxi cylinders\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center;\"\u003eMegaflo Eco; Baxi cylinders\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #fff;\"\u003e\n\u003ctd style=\"padding: 9px 12px; font-weight: 600;\"\u003eElectrical Supply\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center;\"\u003e230 V \/ 50 Hz\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center;\"\u003e230 V \/ 50 Hz\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center;\"\u003e230 V \/ 50 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f0faf9;\"\u003e\n\u003ctd style=\"padding: 9px 12px; font-weight: 600;\"\u003eWarranty\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center;\"\u003e10 years P\u0026amp;L\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center;\"\u003e10 years P\u0026amp;L\u003c\/td\u003e\n\u003ctd style=\"padding: 9px 12px; text-align: center;\"\u003e10 years P\u0026amp;L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cdiv style=\"background: #008377CF; color: #fff; font-weight: bold; padding: 12px 16px; border-radius: 6px 6px 0 0; font-size: 15px; margin-top: 8px;\"\u003eFrequently Asked Questions\u003c\/div\u003e\n\u003cdiv style=\"border: 1px solid #c8e6e3; border-top: none; border-radius: 0 0 6px 6px; overflow: hidden; margin-bottom: 28px;\"\u003e\n\u003cdetails style=\"border-bottom: 1px solid #c8e6e3;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #fff; padding: 12px 16px; cursor: pointer; font-weight: 600; list-style: none;\"\u003eWhat is the difference between the 819, 825, and 830 Heat?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 16px; font-size: 15px; background: #fff;\"\u003eThe only functional difference is \u003cstrong\u003eheat output\u003c\/strong\u003e: the 819 delivers \u003cstrong\u003e19 kW\u003c\/strong\u003e, the 825 delivers \u003cstrong\u003e25 kW\u003c\/strong\u003e, and the 830 delivers \u003cstrong\u003e30 kW\u003c\/strong\u003e. All three carry the same 10-year warranty, include the Adey Micro2 filter, hold an ErP A-rating, and share the same installation features. Your Gas Safe installer can advise the correct output based on a heat loss calculation for your home.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"border-bottom: 1px solid #c8e6e3;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #fff; padding: 12px 16px; cursor: pointer; font-weight: 600; list-style: none;\"\u003eWhat is the difference between the 800 Heat and the 600 Heat?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 16px; font-size: 15px; background: #fff;\"\u003eThe 800 Heat extends the warranty to \u003cstrong\u003e10 years\u003c\/strong\u003e (versus 7 years on the 600 series) and includes the \u003cstrong\u003eAdey MagnaClean Micro2 filter in the box\u003c\/strong\u003e. Both ranges share the same ErP A-rating, 93% efficiency, and LPG convertibility. The 800 Heat is the recommended specification where the customer wants maximum peace of mind and protection.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"border-bottom: 1px solid #c8e6e3;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #fff; padding: 12px 16px; cursor: pointer; font-weight: 600; list-style: none;\"\u003eDoes the Baxi 800 Heat need a hot water cylinder?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 16px; font-size: 15px; background: #fff;\"\u003eYes. The 800 Heat is a \u003cstrong\u003eheat-only (regular) boiler\u003c\/strong\u003e and requires a \u003cstrong\u003eseparate hot water storage cylinder\u003c\/strong\u003e — either vented (gravity-fed) or unvented (mains-pressure, such as the Megaflo Eco) — as well as a \u003cstrong\u003ecold water storage tank in the loft\u003c\/strong\u003e. It is designed for replacement into existing open vent heating systems.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails style=\"border-bottom: 1px solid #c8e6e3;\"\u003e\n\u003csummary style=\"background: #008377CF; color: #fff; padding: 12px 16px; cursor: pointer; font-weight: 600; list-style: none;\"\u003eDoes the 819 Heat require LPG conversion kit?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 16px; font-size: 15px; background: #fff;\"\u003eNo. The 819 Heat (available as part 7898832 for natural gas and 7890711 for LPG) can be converted between gas types by a Gas Safe engineer as part of commissioning. \u003cstrong\u003eNo separate conversion accessory kit purchase is required\u003c\/strong\u003e.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary style=\"background: #008377CF; color: #fff; padding: 12px 16px; cursor: pointer; font-weight: 600; list-style: none;\"\u003eCan the 800 Heat be installed in a sealed system?\u003c\/summary\u003e\n\u003cdiv style=\"padding: 14px 16px; font-size: 15px; background: #fff;\"\u003eYes. The 800 Heat range is \u003cstrong\u003esuitable for both fully pumped open vent and sealed heating systems\u003c\/strong\u003e, making it a versatile like-for-like replacement for virtually any existing regular boiler installation.\u003c\/div\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Baxi","offers":[{"title":"19kW","offer_id":64693994258781,"sku":"7898832","price":1595.0,"currency_code":"GBP","in_stock":false},{"title":"25kW","offer_id":64693994291549,"sku":"7749868","price":1650.0,"currency_code":"GBP","in_stock":true},{"title":"30kW","offer_id":64693994324317,"sku":"7749869-solo","price":1695.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/Baxi800HeatOnlyGasBoiler-819_825_830_7898832_7890711_7749868_7749869_76d700ab-25de-4cea-bc1e-03f3a8f626bc.png?v=1783690451","url":"https:\/\/qualityheating.co.uk\/products\/baxi-800-heat-only-gas-boiler-819-825-830-7898832-7890711-7749868-7749869","provider":"AIZO Quality Heating","version":"1.0","type":"link"}