# Duct silencer/attenuator Heatpex ARIA 125 — Heatpex model 520024001 (Ø125 mm)

**URL:** https://aio.lv/en/product--heatpex-520024001--11833467
**Data updated:** 2026-03-09 14:45 (EET)
**Category:** Ventilation Filters
**Manufacturer:** Heatpex
**Manufacturer code:** 520024001
**EAN:** 5908226240147
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 21.99 €
**Prices and availability valid until:** 2026-07-20 23:59
**Price without VAT (21%):** 18.17 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--heatpex-520024001--11833467

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 16.07.2026 | free |
| Pickup points | 21.07.2026 | 1.89 EUR |
| Courier delivery to door | 21.07.2026 | 4.99 EUR |

## Summary description

Heatpex ARIA 125 is a duct silencer/attenuator designed for ventilation systems with a nominal diameter of 125 mm. Intended to reduce airflow noise and provide flow control in HVAC ducts, it combines sound attenuation and throttling functions. Suitable for residential and commercial ventilation runs, mounting inline on circular ducts to improve acoustic comfort and regulate air movement.

## Long description

Heatpex ARIA 125 is a cylindrical duct silencer and attenuator designed for inline installation in ventilation systems with a nominal diameter of 125 mm. The device combines acoustic absorption and airflow throttling to reduce noise generated by fans and duct turbulence while allowing controlled air passage. Constructed for use in residential and light commercial HVAC applications, this silencer is intended to improve acoustic comfort in supply and extract ducts without significantly increasing static pressure.
Advantages
The silencer provides measurable noise reduction across a range of frequencies typical for ventilation equipment and ductwork. Its compact circular design enables mounting inside standard round ducts with minimal modification. The attenuator balances acoustic performance with airflow control, helping to decrease fan noise, reduce tonal components, and limit airborne transmission of sound along the duct run. Materials and construction are selected to maintain airflow efficiency while delivering consistent attenuation over time.
Suitable for
Reduction of fan and duct noise in residential ventilation systems
Acoustic improvement in small commercial HVAC runs
Inline mounting in circular ducts with 125 mm diameter
Situations requiring both sound attenuation and modest airflow throttling
Key specifications
Nominal duct diameter: 125 mm
Cylindrical inline design for circular ducts
Combined sound attenuation and airflow throttling function
Suitable for supply and extract ventilation applications
Compact dimensions for installation inside standard duct runs
How to use
Install the Heatpex ARIA 125 inline in the circular duct run at a location between the fan and the occupied space or between noisy equipment and the outlet to achieve best attenuation. Ensure the duct is clean and free of obstructions before fitting. Securely connect the silencer to adjoining duct sections using appropriate clamps, seals or duct connectors to prevent air leaks. Observe airflow direction if indicated and avoid compressing or deforming the silencer body during installation. After mounting, check system airflow and static pressure to confirm acceptable performance.
Usage recommendations
For effective noise reduction, install the attenuator at a reasonable distance from noise sources and avoid excessive bends or restrictions immediately upstream or downstream. Verify that the selected position does not excessively increase system static pressure; if necessary, measure fan performance after installation and adjust fan speed or duct layout to compensate. Regularly inspect the silencer as part of routine HVAC maintenance to ensure seals and connections remain intact.

## FAQ

### How much does the Duct silencer Heatpex ARIA 125 cost, and is it available for purchase?

The price is 21.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 42 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 16.07.2026 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 Heatpex 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 Heatpex 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/11833467/67233972_large.webp