Frequently asked questions.
Clear answers.

A server heating system can be considered for buildings with hydronic heating. It requires suitable hydraulic connections, an adequately sized electrical connection, a stable internet connection and a suitable installation location. It is particularly interesting where a heat pump, ground-source system, district heating or wood heating is not possible, not permitted or not economical. This includes residential buildings, hotels, commercial premises and agriculture. What matters is the heat demand, the required heating temperature and the conditions on site.

That depends on the building and its heat demand. Server heating can fully replace the existing heating or work alongside it. In a combined system, the second heat source can provide extra heat on very cold days, for example. It can also act as a backup if one system is temporarily unavailable. For larger projects, several DecentralHeat units can be designed to provide reserve capacity. We assess the options based on past consumption, the required heating temperature, existing equipment and the desired level of reliability.

The 5 kW DH-5 is particularly suited to supplementary heating, taking some of the load off the existing system. For many single-family homes, 5 kW alone is not enough; a DH-50 may then be more suitable. The heat demand determines the choice.

Even in summer, heat may be needed for hot water or a pool. The system adjusts its operation to this demand. If no heat is needed, it switches off, as intended for heat-led operation.

The DH-5 requires 230 V and 26 A. The exact connection must be confirmed before ordering. DH-50 and DH-150 require a three-phase connection up to 415 V and, depending on capacity, up to 80 A or 240 A respectively. A qualified electrician checks whether your connection is sufficient.

We offer the systems for purchase. The customer pays the ongoing electricity costs.

A buffer tank is generally recommended. Whether an existing tank can be used and what size is appropriate depend on the hydraulics, heat demand and operation.

Yes. Remote monitoring requires an internet connection. We clarify the exact setup on site.

Compute Return is the revenue generated by the high-performance computers through Bitcoin mining. Who receives this revenue and how it is allocated is agreed contractually on a case-by-case basis. There is no single allocation that applies to every project. On request, we help you exchange it into Swiss francs through a Swiss broker. Compute Return is not guaranteed; the amount depends on the market and operation.

Yes, that is possible. In Switzerland, sites with annual electricity consumption of 100 MWh or more can buy their electricity on the open market. A server heating system increases consumption significantly: a DH-50 reaches 100 MWh after around 1,900 full-load hours, and a fully equipped DH-150 after around 600. Together with the property's other electricity use, this brings the threshold within reach. Depending on the region and tariff, this reduces the price per kilowatt-hour for all electricity supplied through the connection. Once you switch to the open market, you cannot return to basic supply. We advise you on assessing this option and making the switch; we do not supply electricity ourselves.

Your share of Compute Return can be expressed as an amount per kilowatt-hour of electricity consumed by the system. This acts like cashback on the electricity price. Combined with a lower price on the open market, it can significantly reduce the effective electricity price. The amount varies within a range determined by the electricity price, operating hours, market developments and the allocation agreed in the contract. Roughly every four years, the revenue per unit of computing power halves as scheduled. Compute Return is therefore not a fixed amount and is not guaranteed. Solar PV can supply the computers directly while heat is needed, and a battery stores solar electricity for use when heating is required. We do not guarantee a fixed price.

The purchase price, integration and service are quoted for each project. There are also ongoing electricity and maintenance costs. After your enquiry, we discuss heat demand, existing equipment and the site. We then clarify planning requirements and any site visit needed to prepare an offer. We do not promise a fixed saving or payback period.

That depends on the site, building and installation. We clarify the required permits and documentation during the project with the relevant specialists and authorities.

No. In normal operation, the server heating system is not intrusive. Unlike air-cooled servers, it has no whining server fans because the computers are liquid-cooled. You may hear the usual sounds of building services equipment, such as pumps or smaller fans. We determine a suitable installation location, such as a basement or plant room, as part of the project.

Specialist plumbing and electrical partners carry out the installation. The time and work required depend on the existing setup. We provide the information needed for planning and installation on site.

Yes, the systems are remotely monitored. The warranty and maintenance scope are set out in the offer, rather than promised universally on the website.

Start the Quickcheck or request a consultation. We will get back to you within three working days to arrange it.