Solar water heating for hotels, zimmers and guesthouses
NaturaTemp solar water heating for hospitality is one system that heats the hot water for the rooms and showers, the pool, the jacuzzi and the spa, and where possible the rooms themselves. Solar water-heating panels collect the sun's heat, a smart controller shares it out by priority, and the existing boilers or heat pumps stay as backup and run fewer hours. We design and install these systems in hotels and zimmers across Israel.
What you see in the app
Sample data- A site survey and a detailed quote before any work
- Designed and installed by our engineers
- 5-year warranty and support after installation
What we install
Solar water-heating panels made of glass vacuum tubes. Solar collectors heat water rather than make electricity, reach the temperatures hot water and spa pools need, and keep working on cold, overcast days.
What the system heats
- Hot water for the rooms, the showers and the kitchen
- The pool, the jacuzzi and the spa
- The rooms in winter, through existing fan coils where possible
- Existing boilers or heat pumps stay as backup and run fewer hours
What the system heats in a hotel or a zimmer
Hospitality is one of the strongest cases for solar water heating: properties that operate all year have a relatively steady demand for hot water, so the solar collectors can be used over many months. The system is designed around the occupancy, the consumption profile and the seasonal loads, to limit surplus heat and make better use of the energy. One system covers the rooms, the pool and, where possible, the heating.
Hot water for the rooms and the showers
Guests shower in the morning and in the evening, so demand comes in peaks. The storage is sized to the number of rooms and the occupancy, the panels heat it through the day, and the backup covers the peaks when the sun isn't enough. In hot-water systems for guests, the design also covers suitable storage and circulation temperatures and compliance with the hygiene and safety requirements, using the backup and the control system as needed.
The pool, the jacuzzi and the spa
Spa pools and jacuzzis need higher water temperatures, and vacuum tubes heat water to these temperatures too. How a pool is heated, how many panels it needs and what a cover saves are on the pool page, together with therapy pools and country clubs.
Heating the rooms
Where the hotel already heats with fan coils, the system can feed them in winter and reduce the energy needed from the backup heating. It needs space for the panels and a check of the existing piping, so we calculate it for each property at the engineering survey.
A new zimmer: plan heating and cooling from the start
In a new zimmer, it's worth planning the water and control infrastructure from the start so that it allows heating and cooling with suitable fan coils and a reversible heat pump or a chiller. For cooling, pipe insulation and condensate drainage are planned in advance too. The heating and cooling solution and the scope of the installation are set by the needs of the project.
How one system serves the whole property
The panels collect the sun's heat, the controller shares it out by priority, and the existing heating steps in when the sun isn't enough and when the required water temperatures must be held.
The panels collect heat
Glass vacuum tubes absorb the sun's heat in every season, even when it's cold and overcast outside. The number of panels follows the rooms, the pool and the months you want covered.
A priority order set for each property
Hot water for the guests first, then the pool and the jacuzzi, then the rooms' heating: the order is set together with you, and the controller moves the heat accordingly.
The existing heating becomes backup
Gas boilers, electric heaters or heat pumps keep working, but only when the sun isn't enough or when the required storage and circulation temperatures must be held. The controller switches them on automatically, so they run fewer hours and may last longer.
Remote monitoring and control
From the phone or the computer the manager follows temperatures and system status and controls the system. Many processes run automatically, as far as the equipment allows.
Zimmers: a warm pool and jacuzzi for every booking
In a zimmer, the pool and the jacuzzi must be warm for every booking, even in midwinter, and the heating bill is one of the biggest costs of the business. On days with enough solar radiation the collectors can cover a large share of the load, the backup fills in the rest, and the controller holds the temperatures the guests expect.
The same panels heat the hot water for the units, and in winter they can heat the units themselves through underfloor pipes or fan coils.
Hotels: a large demand in every season
A hotel uses hot water in every season, so the solar collectors can be used over many months, not only in the swimming season. The system is sized to the occupancy and the seasonal loads.
Hot water around the clock
Rooms, showers, kitchen and laundry: the daily consumption is large and predictable, which is exactly where solar heat pays off best.
The pool, the spa and the jacuzzi
One system heats them together with the hot water, by the priorities you set.
Heating through existing fan coils
Where the piping allows, the collectors feed the fan coils in winter and cut the heating cost. It needs space for the panels; we check it at the survey.
The existing system stays
Boilers and heat pumps keep working as backup and run fewer hours; we check how to connect them at the engineering survey.
If you heat with gas today
There are three ways to go, and the property's needs decide which: add panels and keep the gas as backup; add panels and a heat pump and keep the gas as backup; or replace the gas with a heat pump plus panels. For each option we calculate the saving from your gas price and consumption.
How many panels does a hotel or a zimmer need?
It depends on the number of rooms and the occupancy, the pool's volume and whether it's indoor or outdoor, the months you want covered and the space available for the panels: a roof, a wall or the ground. Our engineers measure all of this at the site survey, check the orientation and the shading, set the tilt, and size the panel field so it's used all year.
If the only free spot is in shade most of the day, we'll tell you upfront that the system won't pay off.
Project: a guesthouse in the Galilee with a pool and a jacuzzi
A guesthouse in the Galilee, 2025: solar heating for a 25 m³ pool and a jacuzzi, connected to the existing infrastructure. It is the site in the photo above.
Specification
- Pool: 25 m³
- Jacuzzi: 1 m³
- Panels on the stone wall below the terrace
- Connected to the existing pool equipment
- Control: smart controller that holds the temperatures automatically
Result
- A warm pool and jacuzzi for the guests through the season
- The collectors heat the pool and the jacuzzi and reduce the need to run the backup heating, depending on the sun
Solar water heating for hospitality: FAQ
What hotel and zimmer owners ask us before a project.
Can the system connect to our existing boilers or heat pumps?
In most cases, yes. The existing heating stays as backup; what the controller can do with it — switch it on and off, or also adjust its output — depends on the model, and we check it at the engineering survey.
We heat with gas. Does it still pay off?
Solar heat replaces part of the gas, and we calculate the saving from your gas price and consumption. Properties that buy bulk LPG or natural gas pay less per kWh than a household cylinder, so the calculation is done per site. There are three options: keep the gas as backup behind the panels, add a heat pump as well, or replace the gas with a heat pump plus panels.
How much space do the panels need?
A roof, a wall or a ground frame that gets sun most of the day, as close to the plant room as possible. Our engineers assess the exact position, orientation, shading and tilt on site; the number of panels follows the rooms and the pool.
Does it keep the pool warm in winter?
The panels heat water in every season, and in winter the backup tops up what the sun can't cover, at night and on cloudy days. A cover at night makes the biggest difference: the US Department of Energy puts the possible saving from covering a pool when it's not in use at 50–70% of heating costs.
Can the system heat the rooms too?
Where the property already has fan coils or water underfloor heating, usually yes: in winter they take heat from the collectors. It needs space for the panels and a check of the piping, so we calculate it for each property. In a new building, plan for cooling too from the start — suitable fan coils, pipe insulation and condensate drainage — and in summer they can cool with a reversible heat pump or a chiller.
How much does it cost, and how long does the work take?
We don't publish a fixed price: it depends on the rooms, the pool, the panels and the piping. After the engineering survey you get a detailed quote and a work plan that fits the property's schedule. Running costs for each heating method are in our guide: how much does it cost to heat a pool.
What about warranty and maintenance?
The system comes with a 5-year warranty. The panels have no moving parts, so maintenance is light: an annual check and dusting of the tubes. The app shows temperatures and system status, so anything unusual is easy to spot.