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Charles Austen ET250A Air Blower with Built in Alarm 250 l/pm

£419.00

(exc VAT)
£419.00

(exc VAT)
Quantity

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The Charles Austen ET250A Linear Diaphragm Air Pump is a powerful and reliable solution for sewage treatment systems, septic tanks, and pond aeration applications. Delivering a consistent 250 litres per minute airflow at 0.20 Bar, this high-performance air pump provides a clean, oil-free air supply that helps maintain healthy biological treatment processes and optimal oxygen levels. This model features a built in alarm.

Designed for long-term operation, the ET250A features a durable weatherproof housing suitable for both indoor and outdoor installation. An integrated low-pressure alarm system provides added protection by monitoring airline performance and alerting users with a bright LED warning light and audible buzzer should a fault occur.

With easy installation, low maintenance requirements, and compatibility with service kits, the ET250A is an ideal choice for demanding wastewater and aquatic environments.


Key Features

  • High-performance airflow of 250 LPM at 0.20 Bar
  • Clean, reliable, and oil-free air output
  • Built-in low-pressure alarm for enhanced system monitoring
  • Bright LED indicator and high-pitched warning buzzer
  • Includes rubber elbow fitting for simplified installation
  • Weatherproof construction for indoor and outdoor use
  • Suitable for large sewage treatment plants and pond aeration systems
  • Compatible with service kits to maximise pump lifespan and performance


Ideal For

  • Sewage treatment plants
  • Septic tank systems
  • Wastewater treatment applications
  • Pond and koi pond aeration
  • Aquaculture facilities
  • Commercial and domestic treatment systems


Technical Specifications

  • Model: ET250
  • Performance: 250 LPM @ 0.20 Bar
  • Power Consumption: 220W
  • Connector Size: 26 mm
  • Length: 349 mm
  • Width: 231 mm
  • Height: 219 mm
  • Weight: 17.5 kg

 

Why Choose the ET Enviro 250?

Engineered by Charles Austen, the ET Enviro 250 offers dependable performance, efficient operation, and built-in safety monitoring. Its weatherproof design and powerful airflow make it a trusted choice for maintaining effective aeration in sewage treatment plants, septic systems, and large ponds.

 

Warranty information

Charles Austen recommends that all air pumps and systems are serviced annually. Although the air pump carries a 2-year manufacturer's warranty, diaphragms, valves and filters are consumable parts that naturally wear over time and should be replaced during routine servicing to maintain warranty compliance and ensure reliable operation.


Product images are for illustration purposes only and may vary slightly from the actual product supplied.

SKU: CA-ET250A

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FAQs

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When will my order be dispatched?

Spare Parts Shipping
We ship in-stock spare parts the same day if ordered before 3pm. These orders are sent with DPD as standard and will be shipped on a Tracked Next-Day service.


Tanks & Supplier-Shipped Items

Tanks and certain spare parts are shipped directly from our suppliers. We aim to submit supplier orders to the supplier on the same day your order is placed to ensure prompt processing. 

How much is delivery?

Delivery costs vary depending on the type of product:

 

In-stock Spare Parts: £8.20 - shipped via DPD on a Tracked Next-Day service.
Supplier-shipped Spare Parts: £15 - dispatched directly from the supplier.
Tanks and Sewage Treatment Systems: Free Delivery to most mainland UK postcodes.

 

All delivery charges are calculated accurately at checkout.

I need help with placing my order.

No problem! Here are a few ways we can assist you:

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Call Us: Reach us at 01388 537050 during business hours for quick support.
Email: Send your query to sales@direct-drainage.co.uk, and we’ll respond promptly.

Do you stock all tanks and sewage treatment systems?

We do not stock tanks and treatment systems as standard. These are supplied directly from the manufacturer. The lead times of these systems will vary. If you need an accurate delivery date, please contact us on 01388 537050.

Are your prices inclusive of VAT?

It is important to note that all prices listed on our website exclude VAT. VAT will be calculated at checkout. 

I've found the same item somewhere cheaper, can you match the price?

We always aim to offer competitive pricing. If you've found the same item cheaper elsewhere, let us know — we'll do everything we can to match or even beat the price.

 

Contact us directly on 01388 537050 or drop us an email at sales@direct-drainage.co.uk.