# Zehnder TVA-P 1x90 expansion box – Zehnder HVAC distribution component

**URL:** https://aio.lv/en/product--zehnder-990326131--11833594
**Data updated:** 2026-03-09 14:45 (EET)
**Category:** Home Appliance Accessories
**Manufacturer:** Zehnder
**Manufacturer code:** 990326131
**EAN:** 5905505298882
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 26.49 €
**Prices and availability valid until:** 2026-07-25 23:59
**Price without VAT (21%):** 21.89 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--zehnder-990326131--11833594

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 15.07.2026 | free |
| Pickup points | 20.07.2026 | 1.89 EUR |
| Courier delivery to door | 20.07.2026 | 4.99 EUR |

## Summary description

Zehnder TVA-P 1x90 expansion box is a ventilation distribution component designed for use in HVAC systems. It serves as an intermediate box for routing and balancing airflow in ductwork. The TVA-P 1x90 model provides a single 90° branch connection and is intended for integration with Zehnder ducting and ventilation units in residential or commercial installations.

## Long description

Zehnder TVA-P 1x90 expansion box is a ventilation distribution component designed for HVAC systems where a single 90° branch is required. Intended for integration with compatible Zehnder ducting and ventilation units, this intermediate box helps route and balance airflow in residential and commercial ductwork installations. The TVA-P 1x90 model provides a compact solution for redirecting airflow at a right angle without requiring complex fittings.
Advantages
The expansion box offers a consistent and reliable 90° branch connection that simplifies installation and reduces the number of separate fittings needed. Manufactured to fit Zehnder ventilation systems, it ensures proper alignment and sealing with matching duct components. Its design supports balanced airflow distribution and contributes to quieter operation by minimizing turbulence at the branch point.
Suitable for
Residential ventilation systems requiring a right-angle branch
Commercial HVAC installations with Zehnder ducting
Projects needing a compact intermediate junction to redirect airflow
Retrofit works where an existing run requires a 90° branch
Key specifications
Function: single 90° branch ventilation expansion box for duct systems
Compatibility: designed for use with Zehnder ducting and ventilation units
Application: indoor HVAC distribution for residential and commercial buildings
Purpose: routing and balancing airflow at a right-angle junction
How to use
Connect the TVA-P 1x90 expansion box into a prepared run of ducting at the point where a 90° branch is required, ensuring mating surfaces are clean and properly aligned with the corresponding Zehnder ducts or fittings. Secure connections according to installation guidelines for your ventilation system, using appropriate seals or gaskets where specified to prevent air leakage. After installation, check airflow balance and make any necessary adjustments at dampers or balancing devices in the system to achieve the required distribution.
Usage recommendations
Use this component with Zehnder-compatible ducts and observe the manufacturer’s installation instructions. Verify that system sizing and airflow requirements match the intended use of a single 90° branch, and perform sealing and balancing checks after installation to maintain efficient ventilation performance.

## FAQ

### How much does the Zehnder TVA-P 1x90 expansion box cost, and is it available for purchase?

The price is 26.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 4 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 15.07.2026 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. All transactions are 100% secure and encrypted.

### 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 Zehnder 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 Zehnder 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. More information about warranty service: https://aio.lv/en/warranty

## Image

https://aio.lv/img/cache/product/11833594/68534081_large.webp