Energy-efficient pressure boost, Xylem’s Lowara Resvari Plus targets smarter buildings

With the Lowara Resvari Plus booster set, Xylem is aiming at commercial and residential buildings that want steadier water pressure with lower energy bills. The compact pressure-boosting system is designed to cut power use by up to 70 percent compared with traditional fixed-speed pumps.

Edited by ad hoc news New Releases & Launches Desk. Reviewed before publication on 06/16/2026 at 2:24 AM ET. Details in the imprint.

Xylem is expanding its intelligent pump portfolio in Europe with the Lowara Resvari Plus variable-speed booster set, a packaged pressure-boosting solution aimed at multi-story residential, commercial and light industrial buildings seeking more consistent water pressure and lower operating costs. The skid-mounted system combines one or more high-efficiency pumps, a smart controller and integrated protection hardware to deliver constant pressure while adapting output to real-time demand.

What the Lowara Resvari Plus is designed to do

The Lowara Resvari Plus is essentially a factory-assembled pressure-boosting station that works in tandem with the existing mains supply, kicking in only when inlet pressure drops below a pre-set threshold or demand spikes beyond what the grid can deliver. According to Xylem, the unit uses variable-speed drives to modulate pump speed and match flow precisely to building consumption, which can reduce energy use by up to 70 percent compared with traditional fixed-speed booster systems that run at full power even during low demand periods. A recent InstallerSHOW product overview highlights these efficiency gains and the controller’s simple setup.

Resvari Plus configurations typically pair Lowara vertical multistage pumps with an electronic controller that monitors pressure via transducers and adjusts the pump inverters accordingly, helping maintain a steady outlet pressure at the user’s taps even as flow conditions change throughout the day. The controller can manage duty/assist operation for multi-pump layouts, rotate lead and lag pumps to balance wear and incorporates dry-run protection and fault diagnostics to prevent damage in case of supply interruptions or abnormal operating conditions.

The system is targeted mainly at applications where pressure on upper floors or at distant points of use is marginal, such as apartment blocks, hotels, schools, mixed-use developments and small industrial premises connected to municipal networks. Because the booster is supplied as a compact, pre-engineered skid, installers only need to connect the inlet, outlet and power supply, which can shorten installation time versus building a custom booster set from separate components, an aspect that has been emphasized by trade-show demonstrations and training sessions in the UK market.

From an operational standpoint, the integrated controller interface is designed to simplify commissioning and adjustment, using guided menus and pre-defined operating modes to set target pressures, time schedules or standby behavior. For service technicians, built-in alarm logging and basic remote signaling options make it easier to diagnose issues, while the use of standard Lowara pumps and components aligns with Xylem’s existing service and spare parts network across Europe and other regions where Lowara-branded products are widely distributed.

In terms of performance range, Resvari Plus sets are available in multiple pump sizes and configurations, allowing specifiers to match capacity to building demand profiles rather than oversizing a single, fixed-speed unit. This modularity means that designers can select two or more smaller pumps working in parallel, which can increase redundancy and efficiency at partial loads compared with relying on a single large pump that spends much of its life operating away from its best-efficiency point, a factor that is increasingly relevant as energy costs and carbon reporting requirements tighten for building owners.

The Lowara Resvari Plus line is positioned primarily for the European and broader EMEA markets, with Xylem’s regional sites describing it as part of a catalog of pressure-boosting solutions for potable water, HVAC and light industrial duties. While detailed US pricing and availability information is limited, the system’s configuration and marketing focus indicate that it is meant to complement Xylem’s existing Lowara and Goulds Water Technology booster offerings, giving installers another option when retrofitting older, less efficient plant rooms in dense urban settings.

Market communications around Resvari Plus emphasize the potential for substantial reductions in electricity consumption and lifecycle costs, particularly in buildings where demand fluctuates heavily throughout the day and week. When paired with suitable pressure vessels and correctly programmed control logic, the booster set can reduce pump cycling and pressure swings that otherwise stress piping, valves and terminal fixtures, which in turn may lower maintenance needs over the lifetime of the installation.

Beyond direct energy savings, Xylem is aligning the Lowara Resvari Plus with broader sustainability and decarbonization narratives that are increasingly important in municipal and commercial tenders. The company’s marketing materials stress that pressure-boosting systems represent a significant share of energy consumption in many water and HVAC installations, and that variable-speed, demand-responsive technology is now considered best practice under European building efficiency standards and green certification schemes.

At recent industry events, Xylem and its Lowara brand partners have used Resvari Plus demonstration rigs to show installers how the controller reacts to simulated demand ramps, providing a practical illustration of how pressure is maintained as fixtures are opened and closed. This hands-on approach is designed to reduce perceived complexity around electronic pump controls and to support a shift away from simple on/off, fixed-speed booster designs that are increasingly viewed as outdated and costly to run in high-occupancy buildings.

As regulations and building codes continue to tighten across Europe, demand for reliable, energy-efficient pressure-boosting systems is expected to grow, particularly in markets where existing building stock is being upgraded for better performance. In this context, the Resvari Plus booster set serves as a bridge between traditional mechanical solutions and more fully connected, digitally monitored pump systems that Xylem is rolling out in partnership with its broader portfolio of monitoring and control technologies.

Within Xylem’s overall product lineup, the Lowara Resvari Plus sits alongside other branded pumping and control solutions that collectively address drinking water, wastewater, HVAC and industrial fluid handling. The company has stated in recent communications that efficiency-focused upgrades across its installed base are a key contributor to meeting both customer cost objectives and wider climate targets. Xylem’s Lowara product pages frame booster sets such as Resvari Plus as part of a portfolio aimed at cutting energy use while maintaining water comfort and reliability.

For Xylem’s investors, products like the Lowara Resvari Plus are part of the firm’s strategy to grow in higher-margin, technology-enabled segments of the water infrastructure and building services markets rather than relying solely on commoditized hardware. The company has highlighted the contribution of smart pumps, controls and analytics to its revenue mix in recent quarterly reports and presentations, pointing to rising demand from utilities and building owners for solutions that reduce both operating expenditure and environmental impact.

Although Xylem does not break out revenue by individual product line, its building solutions and applied water segments, which include pressure-boosting systems such as Lowara Resvari Plus, form an important pillar alongside utility-scale transport and treatment offerings. In the latest reported quarter, the company posted stronger-than-expected sales and earnings as it continued to integrate acquisitions and emphasize higher-value technology solutions in its portfolio. According to Xylem’s investor relations materials, management sees ongoing opportunities in energy-efficient, digitally enabled pumping systems in both developed and emerging markets.

Shares of Xylem (ISIN US98419M1009) trade on the New York Stock Exchange under the ticker XYL, with recent quotations reflecting investor expectations for continued growth in smart water infrastructure and building solutions rather than any single product line.

Lowara Resvari Plus booster set at a glance

• Product: Lowara Resvari Plus booster set
• Manufacturer: Xylem Inc.
• Category: New Release / Launch - pressure-boosting system
• Launch date: Initially introduced in European markets in the mid-2020s
• MSRP / Price: Project-specific pricing, typically quoted via distributors and installers
• Availability: Primarily through European and EMEA Lowara distributors and specialist pump installers
• Target audience: Building owners, consulting engineers and installers working on multi-story residential, commercial and light industrial projects
• Key differentiator / USP: Factory-assembled, variable-speed booster set designed to maintain constant pressure while significantly reducing energy consumption versus traditional fixed-speed systems

This article was a.i.-assisted and editorially reviewed. Product information without warranty; prices and availability may change at short notice. Not investment advice and not a buy or sell recommendation. Trading involves risk up to and including the total loss of invested capital.