# SpiroFlex Rekuperator pionowy VENT CLEAR VD4 ERV Ultimate — vertical heat-recovery ventilator, 450 m³/h

**URL:** https://aio.lv/en/product--spiroflex-sx-rvd4ervu--11923740
**Data updated:** 2026-03-10 09:30 (EET)
**Category:** Air purifiers
**Manufacturer:** SpiroFlex
**Manufacturer code:** SX-RVD4ERVU
**EAN:** 5903661111816
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 3 202.99 €
**Prices and availability valid until:** 2026-07-16 23:59
**Price without VAT (21%):** 2 647.10 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--spiroflex-sx-rvd4ervu--11923740

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 08.07.2026 | free |
| Pickup points | 13.07.2026 | 1.99 EUR |
| Courier delivery to door | 13.07.2026 | 4.99 EUR |

## Summary description

Vertical heat-recovery ventilator SpiroFlex VENT CLEAR VD4 ERV Ultimate with a rated airflow of 450 m³/h. Designed for continuous ventilation with energy recovery using an ERV core to transfer heat and moisture between supply and exhaust streams. Suitable for residential or commercial spaces requiring balanced ventilation, improved indoor air quality, and lower heating/cooling loads.

## Long description

The SpiroFlex Rekuperator pionowy VENT CLEAR VD4 ERV Ultimate is a vertical heat-recovery ventilator with a rated airflow of 450 m³/h designed for continuous balanced ventilation. The unit uses an energy recovery ventilator (ERV) core that transfers both sensible heat and a portion of moisture between incoming and outgoing air streams to improve indoor air quality and reduce heating and cooling loads. Its vertical configuration makes it suitable for installations where floor space is limited or where ducting is arranged in vertical risers, and it is intended for use in residential and light commercial environments requiring controlled ventilation and energy efficiency.
Advantages
This ventilator provides continuous balanced ventilation with energy recovery, helping to maintain comfortable indoor temperatures while reducing energy consumption for heating and cooling. The ERV core conserves indoor humidity when appropriate, which can improve comfort and reduce the load on humidification or dehumidification systems. The unit’s rated capacity of 450 m³/h supports efficient air exchange in medium-sized spaces, and the vertical design allows flexible placement in shafts or service rooms. Materials and airflow design are selected to support reliable operation and steady performance over time.
Suitable for
Residential apartments and houses requiring mechanical balanced ventilation
Small to medium commercial spaces such as offices, clinics, or retail premises
Installations with limited floor footprint or vertical duct risers
Renovation projects where energy recovery and humidity transfer are desirable
Key specifications
Nominal airflow: 450 m³/h
Energy recovery type: ERV core for sensible heat and partial moisture transfer
Orientation: vertical unit suitable for shaft or riser installation
Application: continuous balanced ventilation for residential and light commercial use
Effect on HVAC load: reduces heating and cooling demand through heat recovery
How to use
Install the SpiroFlex VENT CLEAR VD4 ERV Ultimate in a vertical position according to local ventilation and building codes, ensuring correct connection of supply and exhaust ducts and proper sealing to prevent bypass air. Connect the unit to appropriate controls and power supply as specified by an HVAC professional. Set airflow rates and control strategies to match the occupancy and building ventilation requirements; regular inspection of filters and the ERV core is recommended to maintain performance. Commission the system after installation to verify balanced airflow, correct heat recovery operation, and absence of air leaks.
Usage recommendations
Maintain filters and the ERV core according to the manufacturer's maintenance schedule, commonly involving periodic cleaning or replacement of filters and inspection of the core for fouling. Use the unit in conjunction with an appropriate control strategy (timers, demand-controlled ventilation, or integration with building management systems) to optimize energy savings and indoor air quality. When installing in humid climates, ensure condensate and drainage provisions are in place and verify that the ERV core is suitable for local moisture conditions.

## Specifications

### Power

| Feature | Value |
|---|---|
| Energy efficiency class | A |

## FAQ

### How much does the SpiroFlex VENT CLEAR VD4 ERV Ultimate — vertical rekuperator 450 m³/h cost, and is it available for purchase?

The price is 3,202.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 3 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 08.07.2026 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, Leasing for legal entities. All transactions are 100% secure and encrypted.

### Can SpiroFlex VENT CLEAR VD4 ERV Ultimate — vertical rekuperator 450 m³/h be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. Learn more about installments and credit options: https://aio.lv/en/payment#b3

### 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 SpiroFlex 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 SpiroFlex 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

### Where can I download the instructions for SpiroFlex VENT CLEAR VD4 ERV Ultimate — vertical rekuperator 450 m³/h?

You can download the instructions in PDF format from the “Instructions” section on the product description page. The file contains complete information about installation, setup, and usage.

## Image

https://aio.lv/img/cache/product/11923740/68535185_large.webp