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header-product Flue concentric extension 60/100 Vaillant 303802
85.49 €

Flue concentric extension 60/100 Vaillant 303802

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Flue concentric extension 60/100 Vaillant 303802

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Short description

Concentric flue extension 60/100 by Vaillant (model 303802). Designed to extend the concentric flue system with 60 mm inner and 100 mm outer diameters. Suitable for use with compatible Vaillant boilers and venting systems to adjust flue length and routing. Provides a sealed concentric connection for exhaust and air intake in residential installations.
Available for order: 6 pcs.
Warranty: 2 Years
SKU: 11827323
Manufacturer: Vaillant
free shipment

Cheapest delivery:

Venipak Pickup LV, Venipak Locker LV

Pick-up points

Venipak Pickup LV

Venipak Locker LV

Cost

1.89 €

Deliver

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Customer service center
2b. Kengaraga str., Riga, Latvia, LV-1063
21.07.2026 {{selectedOffer.officeDeliveryString}}
free
Courier Delivery Please note that in case of a large parcel additional delivery costs may apply!
24.07.2026 {{selectedOffer.courierDeliveryString}}
From 4.99 €
Parcel couriers
Venipak Pickup LV / Venipak Locker LV / Latvijas Pasts pakomāts / Unisend LV / DPD Paku skapis / Omniva LV / Latvijas Pasts nodaļa
24.07.2026 {{selectedOffer.parcelStationDeliveryString}}
From 1.89 €
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3 mth. х 28.5 €

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All payment Methods:
Bank transfer, Bank cards on-line, Apple Pay, Google Pay, Installment
36 months installment: from 2.37 euros per month
Together cheaper
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Product information

Description

Concentric flue extension 60/100 Vaillant 303802 is a purpose-built accessory for expanding concentric flue runs on compatible Vaillant boilers and venting systems. The product maintains a sealed concentric pathway with a 60 mm inner pipe for exhaust gases and a 100 mm outer pipe for combustion air intake, allowing installers to adjust flue length and routing while preserving safe separation of airflow. It is intended for residential installations where additional length or a change in terminal position is required.

Advantages

The concentric design keeps exhaust and intake channels integrated within a single assembly, simplifying installation and reducing the number of separate connections. Constructed to match the dimensions of standard 60/100 systems, the extension provides a secure, sealed joint that helps maintain proper draft and prevents leakage of combustion products. Using a manufacturer-compatible extension helps ensure system conformity and reduces the need for custom adapters.

Suitable for

  • Extending the flue run of compatible Vaillant boilers
  • Adjusting terminal position to suit site constraints
  • Residential boiler installations requiring concentric flue extension
  • Installation where maintaining sealed intake and exhaust separation is required

Key specifications

  • Concentric diameter: inner 60 mm / outer 100 mm
  • Designed for use with compatible concentric venting systems
  • Material and finish matched to Vaillant concentric components
  • Provides sealed connection for simultaneous exhaust and air intake

How to use

Fit the concentric extension between the boiler outlet and the existing flue run, ensuring alignment of inner and outer pipes. Follow the boiler manufacturer’s installation instructions for sealing and securing the joint, including any required clamps or seals. Verify that the assembled run meets minimum clearances and routing guidelines, and perform a pressure and combustion gas check after installation to confirm correct operation and absence of leaks.

Usage recommendations

Use only with compatible Vaillant appliances and concentric components. Have a qualified heating engineer install and test the flue extension to ensure compliance with local regulations and safe operation.

Description

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Customer reviews

Customer questions

FAQ

How much does the Concentric flue extension 60/100 Vaillant 303802 cost, and is it available for purchase?

The price is 85.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 6 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 21.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay, Installment. All transactions are 100% secure and encrypted.

Can Concentric flue extension 60/100 Vaillant 303802 be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. We work with leading banks and leasing companies in Latvia, allowing you to make your purchase on convenient terms — with a minimal down payment and a repayment period from 3 to 36 months. You can apply for credit or installments for the Concentric flue extension 60/100 Vaillant 303802 online, and the application process is as simple as possible:
  • Select the product on the website and add it to your cart;
  • When placing your order, choose the payment method “Installments”;
  • Fill in the required details for the lending partner;
  • Receive a decision within a few minutes.
For more information about available payment options, interest-free installment terms, and credit conditions in Latvia, please visit the Payment page.

Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

What is the warranty period?

All Vaillant products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized Vaillant service centers and through AiO.lv

Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. We will assist with consultation, warranty claim processing, and coordination with certified service centers.
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14-Day Return Policy We are confident in our quality, but if the purchase doesn’t fit — you have 14 days to return the product with peace of mind.
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Quality Since 2008 AiO.lv has been on the market for over 18 years and has earned trust — with more than 6000 genuine positive reviews on Google.