Baxi 300L Air Source Heat Pump Cylinder 300 Litres

Baxi 300L Air Source Heat Pump Cylinder

The Baxi 300L Air Source Heat Pump Cylinder is intended to work alongside your heat pump to provide hot water for your home. This 300 litre unvented cylinder has been built to boost modern heat pump SCOP to keep overall running costs down for 4 to 6 sized bedroom homes. Designed and manufactured by Baxi and Heatrae Sadia, they can be used with most air source heat pumps, such as the Baxi HP40 range.

Features & Benefits: Baxi 300L Cylinder

• UK Manufacturing: Designed and built in the UK by heating experts Baxi and Heatrae Sadia.

• Fast Hot Water: The tank is fully heated in just 27.8 minutes, which is ideal for a busy household with multiple showers.

• Compatibility: Designed to work with air source heat pumps, including the Baxi HP40 range.

• Heat Exchanger Coil: A large sized 3.0 m² heat exchanger coil (35.5 kW rating) that has been specifically designed for use with low-temperature heat pumps.

• High Volume Tank: The large water tank gives you up to 287 litres of usable hot water above 40°C.

• ErP Class C Rating: The tank features 60mm of foam insulation to keep daily heat loss to 2.05 kWh/24h.

• Hot Water Backup: A 3 kW boost immersion and a smart backup immersion is designed for emergency use.

• Built to Last: The corrosion-resistant stainless steel tank is housed inside a tough outer steel shell.

• Size & Weight: The unit has a vertical height of 2,082 mm and 579mm in diameter and weighs 62kg empty and approximately 349kg when full.

System Integration

To make full use of its large 3.0 m² internal coil, this 300L unit needs an equally powerful heat pump to pair with. We would recommend pairing the Baxi 300L with one of the following heat pumps:

• The Premium Choice: Go for the Baxi HP40 8kW Heat Pump. It is the best choice for large detached houses that use multiple heating zones and the demand for hot water is high.

• For Large or Busy Homes: We recommend the Baxi HP40 7kW Heat Pump for large family homes. Pairing these two gives you plenty of hot water, even if you have multiple bathrooms all running at the same time.

Before buying, we strongly recommend that customers have an MCS-certified fitter check your required heat output by completing a BS EN 12831 room-by-room heat-loss calculation.

Build Quality & Warranty

Designed for everyday use, this cylinder is built with a stainless steel tank and steel outer casing. Baxi offers a 10-year tank warranty and a 2-year parts and labour warranty when serviced annually by a G3-qualified fitter.

Buy the Baxi 300L Online

Available to purchase today from National Heater Shops. We offer a Price Match Promise, rapid UK delivery and technical support from our HVAC team.

• Capacity: 300L
• Actual Volume: 287L
• Hot Water Capacity Above 40°C: 289L
• Cylinder Type: Unvented Air Source Heat Pump Cylinder
• Inner Vessel Material: Stainless Steel
• Coil Surface Area: 3m²
• Coil Volume: 8.9L
• Coil Heat-Up Time @ 15L/min: 27.8 Minutes
• Coil Rating @ 15L/min: 35.5kW
• Immersion Heater Rating: 3kW @ 240V / 2.7kW @ 230V
• Standing Heat Loss: 2.05kWh/24h
• Energy Efficiency Class: C
• Maximum Mains Pressure: 16bar
• Maximum Design Pressure: 6bar
• Operating Pressure: 3.5bar
• Maximum Primary Pressure: 3bar
• Water Connections: 22mm Compression
• Height: 2082mm
• Diameter: 579mm
• Empty Weight: 62kg
• Full Weight: 349kg
• Expansion Vessel: 24L
• Warranty: 2 Years
• Inner Tank Warranty: 10 Years