# Automatic Hygroscopic Air Vent 1/2" with O-ring FERRO O15AH

**URL:** https://aio.lv/en/product--ferro-o15ah--11938924
**Data updated:** 2026-03-10 11:39 (EET)
**Category:** Heating Radiators
**Manufacturer:** FERRO
**Manufacturer code:** O15AH
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 9.49 €
**Prices and availability valid until:** 2026-07-15 23:59
**Price without VAT (21%):** 7.84 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--ferro-o15ah--11938924

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 03.07.2026 | free |
| Pickup points | 08.07.2026 | 1.99 EUR |
| Courier delivery to door | 08.07.2026 | 4.99 EUR |

## Summary description

Automatic hygroscopic air vent FERRO O15AH, 1/2" connection with O-ring. Designed to remove trapped air from heating and cooling systems automatically, the device features hygroscopic operation to reduce air accumulation and maintain circulation efficiency. Suited for radiators, collectors and closed-loop hydronic systems where reliable automatic air bleeding is required.

## Long description

Automatic hygroscopic air vent FERRO O15AH with a 1/2" connection and O-ring is designed to automatically remove trapped air from closed hydronic systems. The device uses a hygroscopic mechanism to absorb moisture and open the vent when air accumulates, maintaining efficient circulation in heating and cooling installations. It is compact and suitable for installation on radiators, collectors and other points where continuous automatic air elimination is needed.
Advantages
The hygroscopic operation enables automatic, maintenance-free air release without manual intervention, reducing the risk of noise, uneven heating and circulation loss. A sealed O-ring connection ensures a reliable, leak-resistant joint with standard 1/2" fittings. The compact form factor allows installation in tight spaces on radiators and manifolds while providing consistent performance in closed-loop hydronic systems.
Suitable for
Residential and commercial radiators
Distribution collectors and manifolds
Closed-loop heating and cooling systems
Boiler circuits and heat exchangers where automatic air removal is required
Key specifications
Connection size: 1/2" with O-ring sealing
Operation type: hygroscopic automatic air vent
Application: closed hydronic heating and cooling systems
Installation location: radiator, collector, manifold or similar points
Material: corrosion-resistant components suitable for system fluids
How to use
Install the air vent vertically at a high point of the circuit or on the radiator/collector following standard plumbing practice. Ensure the O-ring is seated correctly and tighten to the manufacturer's recommended torque to prevent leaks while avoiding over-tightening. Once fitted, the vent operates automatically: hygroscopic elements respond to moisture and trapped air, opening the passage to release air without manual bleeding. Regular system checks are advised to confirm normal operation and to inspect for external leaks.
Usage recommendations
Place the vent at the highest practical point of the system and in accessible positions for periodic inspection. Avoid placing the device where water hammer or heavy vibration occurs. Use compatible sealing materials when replacing the O-ring and follow system manufacturer guidelines for pressure and temperature limits to ensure reliable service life.

## FAQ

### How much does the FERRO O15AH Automatic Hygroscopic Air Vent 1/2" cost, and is it available for purchase?

The price is 9.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 31 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 03.07.2026 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 FERRO 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 FERRO 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/11938924/67378818_large.webp