# Circulator pump WILO 2120639 — compact inline wet rotor pump, spare part model 2120639

**URL:** https://aio.lv/en/product--wilo-2120639--9198167
**Data updated:** 2026-03-07 15:18 (EET)
**Category:** Home Appliance Accessories
**Manufacturer:** WILO
**Manufacturer code:** 2120639
**EAN:** 4048482235868
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 631.99 €
**Prices and availability valid until:** 2026-07-11 23:59
**Price without VAT (21%):** 522.31 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--wilo-2120639--9198167

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 07.07.2026 | free |
| Pickup points | 10.07.2026 | 1.99 EUR |
| Courier delivery to door | 10.07.2026 | 4.99 EUR |

## Summary description

WILO 2120639 is a circulator (inline/wet-rotor) pump spare part from WILO. It serves to circulate water in heating and hot-water systems, supporting central heating and domestic hot water circulation. The unit is designed for compact installation as a wet-rotor circulator, providing quiet operation and reliable flow control where replacement or repair of an existing WILO pump is required.

## Long description

WILO 2120639 is a compact inline wet-rotor circulator pump designed as a spare part for heating and domestic hot-water systems. Intended for replacement or repair of existing WILO circulators, this unit provides continuous water circulation in central heating circuits and DHW recirculation loops. Its inline configuration and wet-rotor design allow for straightforward integration into pipework with minimal space requirements while maintaining stable hydraulic performance and low noise operation.
Advantages
The compact inline construction reduces installation footprint and simplifies replacement of worn pumps without extensive piping modifications. The wet-rotor concept ensures quiet operation and fewer mechanical wear points, which contributes to longer service intervals. The pump offers consistent flow characteristics suitable for typical residential and light-commercial heating systems and is compatible with standard seal and flange connections used in WILO retrofit scenarios.
Suitable for
 Central heating circulation in residential buildings
 Domestic hot water (DHW) recirculation loops
 Replacement of failed or worn WILO inline wet-rotor pumps
 Small commercial heating circuits requiring compact pump solutions
Key specifications
 Configuration: inline, wet-rotor circulator
 Application: circulation of heating and domestic hot-water systems
 Installation: compact inline mounting in pipework
 Operation: quiet hydraulic operation suitable for continuous duty
 Compatibility: designed as a spare part for WILO inline circulators
How to use
Before installation, isolate the circuit and drain the section of pipework where the pump will be replaced. Remove the old pump following manufacturer guidance and inspect seals and mating flanges. Fit the WILO 2120639 inline circulator into the existing pipe run ensuring correct flow direction and secure flange or threaded connections. Refill and vent the system to remove air pockets, then restore power and check for proper rotation, flow, and absence of leaks. Follow local regulations and safety practices, and consult the system documentation for electrical connections and control settings.
Usage recommendations
Use the pump as a direct replacement for compatible WILO inline wet-rotor models; verify gasket condition and sealing surfaces during exchange. Ensure system water quality and appropriate inhibitor levels to reduce risk of corrosion and blockage. For best long-term performance, check mounting alignment and system venting after initial start-up and perform periodic inspections according to the heating system maintenance schedule.

## FAQ

### How much does the Circulator pump WILO 2120639 cost, and is it available for purchase?

The price is 631.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 2 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 07.07.2026 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 Circulator pump WILO 2120639 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 WILO 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 WILO 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/9198167/52175825_large.webp