Earn Rewards on Every Order – Unlock Your Discounts Now!
Klargester BioAir 8 Sewage Treatment System (up to 35 person)
Klargester BioAir 8 Sewage Treatment System (up to 35 person)
Klargester BioAir 8 Sewage Treatment System (up to 35 person)

Over 17,000+ Happy Customers

Klargester BioAir 8 Sewage Treatment System (up to 35 person)

Want to order this item?

Email us: sales@direct-drainage.co.uk
Call Us: 01388 537 050

CONTACT US TO ORDER

Secure Payment - Multiple Payment Gateways

This product is delivered directly from the supplier, lead times vary.

The new Klargester BioAir 8 gravity fed wastewater treatment plant uses aerated technology to deliver a high level of water discharge quality.

Klargester BioAir Economy models are supplied with an isolator switch with power failure light (in the blower box) and should be mounted externally at a point where it is easily visible from the property.

Offering flexible installation options to suit a variety of domestic sites and a low impact visual footprint, Klargester BioAir Economy is an affordable choice for your domestic wastewater treatment solution.

Product Benefits: 

  • Suitable for shallow dig Installations
  • Suitable for use in traffic areas (structural design advice required by others)
  • Low level visibility
  • No plastic media
  • Improved effluent quality – BOD5 97.5%
  • Third party tested to EN 12566-3
  • Easy to install and operate
  • Supplied with isolator switch and failure light
  • Affordable service plans available
  • Robust and Lightweight
  • 12 months warranty* (terms apply)

Typical Applications

  • Single & Multiple Homes
  • Light Industrial Premises
  • Small Offices
  • Farms
  • Barn Conversions

 

Specification

BioAir

Model

BioAir 8

Population Equivalent

Unit

 35

Daily Flow

m3/d

 5.25

Daily Load

kg BOD5/d

 2.1

Measurements

Outlet invert

mm

600-2100

Diameter

mm

1920

Length

mm

 7400

Installation depth

mm

 2245-3745

Inlet invert

mm

500-2000

Inlet pipe work*

mm

160 dia

Outlet pipe work*

mm

160 dia

Material Construction

MDPE or GRP

GRP

Unit Weight

kg

1450**

 

 

Klargester BioAir 8 Sales Drawing (Gravity Only)

Klargester BioAir Data Sheet

Klargester BioAir Blower & Duct Vent Drawing

Klargester BioAir 4, 6, 7 & 8 Installation Manual (GRP Models)

Klargester BioAir PIA Certificate 

Klargester BioAir 8 Neck Extension

Kingspan Extended Warranty

 

Agricultural Tanks Agricultural Tanks Agricultural Tanks

Need a Quote? We Can Help

Tailored Product Quotes

Request a quote and we’ll price the right product for your project.

Expert Product Advice

Need help choosing the right product? Our team is here to help.

Specialist Delivery

Large products are delivered direct, with lead times confirmed before order.

Buy with Confidence

Trusted sewage and drainage supplier with over 20 years’ experience.

REQUEST YOUR QUOTE
Agricultural Tanks

YOU MAY ALSO LIKE

CUSTOMER REVIEWS

Rated 4.8/5 by Direct Drainage Customers

Based on over 600 verified reviews

VERIFIED REVIEW

Very helpful from the start to the finish

Items were despatched quickly and arrived the next day. Would recommend.

Title

North Hayne Farm Cottages | 26 June 2026

VERIFIED REVIEW

Cheapest price I could find for the pump

Cheapest price I could find for the pump and delivery the next day what more could you want.

Title

Sam Jukes | 5 November 2025

VERIFIED REVIEW

Great service!

I ordered a septic tank it was delivered within a week and the delivery driver left it in the exact right place and time. Would definitely use this company again, thanks so much.

Title

Eve Harland | December 2025

OFFICIAL SUPPLIERS OF:

FAQs

Got questions? We’ve got the answer...

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:

Live Chat: Click the chat icon on the bottom right of the page to speak with our team instantly.
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.