# Ventilation recuperator SpiroFlex RED X-VENT HD4 HE Comfort — 450 m³/h, horizontal (DWZ)

**URL:** https://aio.lv/en/product--spiroflex-sx-red-hd4hec--11944881
**Data updated:** 2026-03-10 11:51 (EET)
**Category:** Air purifiers
**Manufacturer:** SpiroFlex
**Manufacturer code:** SX-RED-HD4HEC
**EAN:** 5903661105143
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 2 330.99 €
**Prices and availability valid until:** 2026-07-17 23:59
**Price without VAT (21%):** 1 926.44 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--spiroflex-sx-red-hd4hec--11944881

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 09.07.2026 | free |
| Pickup points | 14.07.2026 | 1.99 EUR |
| Courier delivery to door | 14.07.2026 | 4.99 EUR |

## Summary description

SpiroFlex RED X-VENT HD4 HE Comfort is a horizontal (DWZ) ventilation recuperator with a rated airflow of 450 m³/h. Equipped with a heat-exchange core for energy recovery and high-efficiency filtration, it is designed for balanced supply and exhaust ventilation in residential or small commercial spaces. Suitable for heat recovery, indoor air quality improvement and continuous ventilation.

## Long description

SpiroFlex RED X-VENT HD4 HE Comfort is a horizontal (DWZ) ventilation recuperator with a rated airflow of 450 m³/h. Designed for balanced supply and exhaust ventilation, this unit integrates a high-efficiency heat-exchange core to recover thermal energy from extract air and reduce heating or cooling demand. The device also includes high-efficiency filtration to improve indoor air quality in residential and small commercial environments while enabling continuous ventilation with controlled airflow.
Advantages
The horizontal configuration allows flexible installation in ceiling or wall cavities where DWZ orientation is required. The heat-exchange core provides effective sensible heat recovery to lower energy consumption, while the high-efficiency filters capture dust and particulates to protect indoor air. The unit is sized for up to 450 m³/h airflow, offering stable performance for small apartment, multi-room homes or compact commercial zones. Built for continuous operation, it supports balanced ventilation strategies that maintain pressure equilibrium and reduce drafts.
Suitable for
Residential apartments and multi-room houses requiring heat recovery ventilation
Small offices, clinics or commercial spaces with continuous ventilation needs
Retrofit installations where horizontal (DWZ) mounting is preferable
Applications focused on indoor air quality improvement and energy efficiency
Key specifications
Rated airflow: 450 m³/h (nominal)
Orientation: horizontal (DWZ)
Heat-exchange type: high-efficiency core for sensible heat recovery
Filtration: high-efficiency particulate filtration for supply and extract air
Intended use: balanced supply and exhaust ventilation for residential and small commercial spaces
Operation: continuous ventilation capable with controlled airflow
How to use
Install the recuperator in a horizontal (DWZ) position following site-specific duct layout and local ventilation standards. Connect supply and extract ducts to the designated ports and ensure access for filter replacement and core maintenance. Commission the unit by setting the required airflow rate up to the rated 450 m³/h according to building ventilation design and occupant load. Verify balanced operation by measuring supply and exhaust airflow and adjust fan speed or dampers as needed. Schedule regular inspections of filters and the heat-exchange core to sustain performance.
Usage recommendations
For optimal energy recovery and indoor air quality, use in systems with properly sized ducts and consider pre- and post-filters where pollutant loads are high. Replace filters at manufacturer-recommended intervals and clean the heat-exchange core periodically. Ensure adequate access space for maintenance and comply with local ventilation codes during installation and commissioning.

## Specifications

### Power

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

## FAQ

### How much does the SpiroFlex RED X-VENT HD4 HE Comfort — 450 m³/h cost, and is it available for purchase?

The price is 2,330.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 1 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 09.07.2026 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 RED X-VENT HD4 HE Comfort — 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 RED X-VENT HD4 HE Comfort — 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/11944881/68542705_large.webp