# Inverter Generator könner & söhnen KS4000iES — 4000 W, single-phase, model KS4000iES

**URL:** https://aio.lv/en/product--konner-sohnen-ks4000ies--6910842
**Data updated:** 2026-05-19 13:46 (EEST)
**Category:** Power Inverters
**Manufacturer:** könner & söhnen
**Manufacturer code:** KS4000iES
**EAN:** 4260405363377
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 1 030.99 €
**Prices and availability valid until:** 2026-08-05 23:59
**Price without VAT (21%):** 852.06 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--konner-sohnen-ks4000ies--6910842

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 20.07.2026 | free |
| Courier delivery to door | 23.07.2026 | 53.99 EUR |

## Summary description

Inverter generator könner & söhnen KS4000iES provides up to 4000 W output in a single-phase configuration. Designed for stable sinusoidal power delivery, it suits sensitive electronics, home backup, outdoor events and small construction sites. As an inverter-type unit, it offers improved voltage and frequency regulation compared with conventional generators and portability for mobile power needs.

## Long description

The Könner & Söhnen KS4000iES is a high-performance inverter generator designed to provide a stable and reliable power supply for a wide range of applications. With a maximum output of 4000 W, this single-phase unit utilizes advanced inverter technology to deliver a pure sine wave, ensuring that sensitive electronic devices operate safely without the risk of voltage fluctuations. Its compact design and integrated features make it an ideal solution for both residential backup and professional mobile power requirements.
Advantages
The primary advantage of the KS4000iES is its ability to produce high-quality electrical current, which is essential for powering modern electronics such as laptops, medical equipment, and precision tools. The inverter system adjusts the engine speed based on the load, which significantly improves fuel efficiency and reduces noise levels during operation. Furthermore, the unit is engineered for ease of use, featuring a robust construction that ensures long-term durability and consistent performance in various environmental conditions.
Suitable for
Powering sensitive electronics like computers and televisions
Emergency home backup during power outages
Outdoor events and camping trips
Small construction sites requiring portable power
This generator may not be suitable for heavy-duty industrial machinery that requires high starting currents or continuous high-wattage output exceeding its rated capacity. It is also not intended for use in enclosed spaces without proper ventilation due to exhaust emissions.
Key specifications
Maximum power output: 4000 W
Voltage type: Single-phase
Output waveform: Pure sine wave
Technology: Inverter
To operate the generator, ensure it is placed on a flat, stable surface in a well-ventilated area. Check the oil and fuel levels before starting the unit. Once prepared, follow the manufacturer's starting procedure, which typically involves engaging the ignition and using the recoil or electric start system. Connect your devices only after the generator has reached a stable running speed.
What to consider before purchase
Total wattage requirements of your connected devices
Fuel type and storage availability
Maintenance requirements for the engine
Portability needs based on the unit's weight
For optimal performance and longevity, always perform regular maintenance checks, including oil changes and air filter cleaning, as specified in the user manual. Avoid overloading the generator beyond its rated capacity to prevent damage to the inverter module.

## FAQ

### How much does the könner & söhnen KS4000iES inverter generator 4000 W cost, and is it available for purchase?

The price is 1,030.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 5 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 20.07.2026 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 könner & söhnen KS4000iES inverter generator 4000 W 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 könner & söhnen 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 könner & söhnen 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/6910842/49988459_large.webp