Heat pumps · Commercial
Heat pump water heating for hotels, schools and hospitals
Hotels, schools, hospitals and developments need hot water at every hour and every peak. Sonnen designs, installs and maintains air-source heat pump water heating for high, steady demand, sized to real occupancy and planned around your construction schedule and operating hours.
Why heat pumps
Built for high, steady demand
A heat pump pulls warmth from the surrounding air rather than from sunlight, so it heats water day and night. Where a building draws hot water around the clock, that consistency matters, and so does the running cost: Sonnen's heat pump water heaters use up to around 70% less electricity than a standard electric water heater.
- Dramatically lower running costs at scale
- Consistent output regardless of weather or time of day
- Commercial capacities for high continuous demand
- Pairs with solar thermal for a multi-energy hot-water plant
Sizing
Sized by occupancy and demand
We size commercial systems to real occupancy and demand, not rules of thumb: how many people the building serves, when hot water is drawn and how steady that demand is. We recommend what the load justifies, never a bigger system than the job needs. Share your occupancy, load or drawings and we'll return a plan and timeline.
Capacity and configuration are confirmed at design stage against your demand. The heat pump range and specifications are listed on the main heat pump page.
Installation
Planned around your build and your operations
We integrate our installation schedule with the rest of your build or renovation, so we hit the deadlines your project depends on.
- Installation sequenced to fit your build schedule and coordinated with other contractors
- Clear timelines for developers and project managers
- Minimal disruption for occupied buildings, including apartment blocks and operating businesses
- Planned around your operating hours, so the system is ready when you need it, not the reason handover gets delayed
Maintenance plans
Kept performing after handover
Regular maintenance catches wear before it becomes a callout and keeps the system performing as designed. See also our heat pump repair and servicing and our wider installation, maintenance and repair services.
- Scheduled service visits, timed around seasonal demand
- Performance checks against original design specs
- Priority servicing for commercial sites, apartment complexes and management committees
- Straightforward records of what was checked and what was done, useful for handovers and audits
Who it suits
Buildings we plan for
Combining with solar
Heat pump, solar, or both
Heat pumps pair with solar thermal for a multi-energy hot-water plant. Whether a heat pump alone, solar alone or a combination suits your building depends on your roof, your demand pattern and your site, and we'll recommend honestly.
Heat pump or solar water heater? →Heat pump water heaters
More on heat pumps
Get in touch
Scope your project with us.
Share your occupancy, load or drawings and we'll return a plan and timeline.