Residential · R32COP 4.23~4.92Caldo Up
Heating, cooling and hot water. EVI technology for reliable performance down to −30°C.
- 8 · 13 · 16 · 18 · 23 · 28 · 35 kW
- R32 · EVI DC inverter
- Operating range −30 ~ 43°C
- Panasonic compressor · Wi-Fi
Heat Pump Technologies
Energy from the air.
Comfort
all year round.
High-efficiency, eco-friendly heat pump solutions for heating, cooling and hot water — from homes and villas to commercial buildings and swimming pools.
Heating · Cooling · Hot water
CALDO UPR32 / EVI DC INVERTER
2012heat pump expertise since
96+countries exported to
−30°Creliable operation down to
6product series
Our collection
Product series designed for every need
Separately optimised series for homes, villas, commercial buildings and pool projects.
Residential · R32COP 4.23~4.92
Villa · R290COP 3.81~5.29Caldo Boost
Home comfort with natural R290 refrigerant, Wi-Fi control and hot water up to 75°C.
- 8 · 11 · 15 · 22 kW
- Natural refrigerant R290
- Operating range −25 ~ 43°C
- SCOP up to 4.69 (35°C)
Hot water · R290COP 2.93~3.75Caldo All
Hot water for every day. 200 or 300 litre tanks with R290 refrigerant and an A+ energy rating.
- 200 L and 300 L tanks
- Energy class A+
- Up to 75°C with backup heater
- Operating range −7 ~ 45°C
Pool · R32COP 4.8~7.4Caldo Silent Pool
Pool comfort, from 20 to 130 m³. Smart Life control and a corrosion-resistant ABS enclosure.
- 10 · 11 · 14 · 17 · 20 · 24 · 28 · 33 kW
- Pools from 20 to 130 m³
- COP 6.50 at 50% capacity
- Spiral titanium heat exchanger
Commercial · R290COP 3.80~5.02Caldo Commercial Duo
50 or 92 kW solutions for commercial projects, with R290 and hot water up to 78°C.
- 50 kW · 92 kW
- Hot water up to 78°C
- Operating range −25 ~ 43°C
- 380–415V/3Ph · Highly compressor
Commercial pool · R410ACOP 6.0~6.2Caldo Commercial Pool
Heating for hotel pools, sports facilities and other commercial spaces, from 40 to 500 m³.
- 26 · 52 · 75 · 100 · 121 · 145 kW
- Pools from 40 to 500 m³
- Max. outlet water 43°C
- Titanium heat exchanger in PVC housing
Caldo Commercial Duo · 92 kW
Performance and design, without compromise.
For commercial buildings and industrial sites that need plenty of heat and hot water: up to 92 kW of heating, domestic hot water up to 78 °C and up to 2,580 litres per hour, with natural R290 refrigerant and operation down to −25 °C.
- 92 kWmaximum heating capacity
- 78 °Cdomestic hot water
- 2580 L/hhot water output
- R290natural refrigerant
At a glance
Series comparison
Quickly find the right series for your project.
Swipe to explore all specifications.
| Series | Application | Capacity | Refrigerant | Max. water temp. | Min. ambient temp. | COP range |
|---|---|---|---|---|---|---|
| Caldo Up | Residential · light commercial | 8 – 35 kW | R32 | 60°C (DHW) | −30°C | 4.23 – 4.92 |
| Caldo Boost | Villas · large homes | 8 – 22 kW | R290 | 75°C | −25°C | 3.81 – 5.29 |
| Caldo All | Domestic hot water | 200 / 300 L | R290 | Up to 75°C with backup heater | −7°C | 2.93 – 3.75 |
| Caldo Silent Pool | Residential pools | 10 – 33 kW | R32 | 40°C | −7°C | 4.8 – 7.4 |
| Caldo Commercial Duo | Commercial · industrial | 50 / 92 kW | R290 | 78°C | −25°C | 3.80 – 5.02 |
| Caldo Commercial Pool | Commercial pools | 26 – 145 kW | R410A | 43°C | −7°C | 6.0 – 6.2 |
Made for your project
Technical data
Technical data are nominal values under standard test conditions. Actual performance may vary. Specifications may change without notice.
Caldo Up
Caldo Up Series EVI DC inverter heat pumps provide efficient heating, cooling and hot water. Using R32 refrigerant and EVI technology, they operate reliably down to −30°C. Wi-Fi control, 0.1°C temperature precision, high COP values and a durable design ensure energy savings and long-term performance.
COP 4.23~4.92RefrigerantR32
Operating range−30~43°C
CompressorPanasonic
DHW outlet33–60°C
Heating outlet20–58°C
Cooling outlet7–25°C
Swipe to explore all specifications.
| Model | 8 kW | 13 kW | 16 kW | 18 kW | 23 kW | 28 kW | 35 kW |
|---|---|---|---|---|---|---|---|
| Power supply | 230V/1Ph 50–60Hz | 230V/1Ph 50–60Hz | 230V/1Ph 50–60Hz | 230V/1Ph 50–60Hz | 380V/3Ph 50–60Hz | 380V/3Ph 50–60Hz | 380V/3Ph 50–60Hz |
| Circulation pump | Shimge DC | Shimge DC | Shimge DC | Shimge DC | Shimge DC | AWMT | AWMT |
| Heating capacity (kW) | 1.57~8.40 | 4.40~13.00 | 5.8~15.5 | 5.9~18.2 | 7.5~23.0 | 10.2~28.0 | 12.8~35.0 |
| Heating power input (kW) | 0.32~1.87 | 0.90~3.02 | 1.22~3.66 | 1.20~4.11 | 1.61~5.38 | 2.17~6.56 | 2.71~8.19 |
| COP | 4.49~4.91 | 4.30~4.90 | 4.23~4.75 | 4.43~4.92 | 4.28~4.66 | 4.27~4.70 | 4.27~4.72 |
| Cooling capacity (kW) | 0.99~6.22 | 2.80~8.20 | 5.5~11.0 | 3.81~11.53 | 4.73~14.6 | 6.54~19.8 | 8.13~24.6 |
| EER | 2.85~3.41 | 2.48~3.29 | 2.76~3.29 | 2.85~3.43 | 2.76~3.22 | 2.76~3.24 | 2.75~3.23 |
| DHW heating capacity (kW) | 1.28~6.81 | 3.52~10.50 | 8.2~13.6 | 4.80~14.72 | 6.1~18.5 | 12.3~20.4 | 13.6~22.6 |
| DHW COP | 3.2~4.1 | 3.1~4.0 | 3.7~4.3 | 3.2~4.1 | 3.0~3.7 | 3.6~4.2 | 3.6~4.2 |
| Water flow (m³/h) | 1.4 | 2.2 | 2.7 | 3.1 | 3.9 | 4.8 | 6.0 |
| Noise dB(A) @1 m | ≤53 | ≤55 | ≤57 | ≤57 | ≤57 | ≤59 | ≤59 |
| Net/gross weight (kg) | 110/120 | 115/125 | 130/140 | 170/180 | 165/175 | 220/230 | 240/250 |
| Pipe diameter | DN25 | DN25 | DN25 | DN25 | DN25 | DN32 | DN32 |
| Unit dimensions (mm) | 970×475×835 | 1100×475×985 | 1080×480×1060 | 1050×480×1330 | 1050×480×1380 | 1160×500×1580 | 1160×500×1580 |
| IP rating | IPX4 | IPX4 | IPX4 | IPX4 | IPX4 | IPX4 | IPX4 |
| Power cable size | 3x4mm² | 3x6mm² | 3x10mm² | 3x10mm² | 5x4mm² | 5x6mm² | 5x6mm² |
| Circuit breaker (A) | 25 | 32 | 40 | 40 | 25 | 32 | 32 |
Caldo Boost
Using eco-friendly R290 refrigerant, the Caldo Boost Series provides efficient heating, cooling and hot water, operating reliably down to −25°C. Wi-Fi and IoT control, high COP efficiency and hot water up to 75°C ensure energy savings and comfort.
COP 3.81~5.29Operating range−25~43°C
Hot water20~60°C
Heating water20~70°C
Cooling water7~35°C
CompressorHighly
Water pumpShimge
Swipe to explore all specifications.
| Model | 8 kW | 11 kW | 15 kW | 22 kW |
|---|---|---|---|---|
| Heating capacity (kW) · 30/35°C | 3.3~8.3 | 4.5~11.4 | 5.9~14.8 | 8.8~22.0 |
| Heating power input (kW) | 0.64~2.18 | 0.85~2.95 | 1.13~3.83 | 1.68~5.77 |
| COP | 3.81~5.17 | 3.86~5.29 | 3.86~5.22 | 3.81~5.24 |
| DHW capacity (kW) · 15/55°C | 3.7~7.4 | 5.2~10.2 | 6.6~13.2 | 7.8~17.6 |
| DHW COP | 3.52~4.69 | 3.55~4.71 | 3.54~4.67 | 3.51~4.66 |
| Heated water output (L/h) | 159 | 219 | 283 | 377 |
| Cooling capacity (kW) | 2.4~5.8 | 3.3~8.2 | 4.3~10.8 | 6.2~15.3 |
| EER | 2.65~3.04 | 2.67~3.06 | 2.71~3.10 | 2.73~3.12 |
| ηs / SCOP · 35°C outlet | 182.7% / 4.64 | 181.0% / 4.6 | 182.9% / 4.65 | 184.6% / 4.69 |
| ηs / SCOP · 55°C outlet | 136.0% / 3.48 | 137.0% / 3.5 | 131.9% / 3.37 | 138.9% / 3.55 |
| Noise dB(A) @1 m | 44 | 43 | 45 | 45 |
| Power supply | 230V/1Ph/50–60Hz | 230V/1Ph/50–60Hz | 230V/1Ph/50–60Hz | 380V/3Ph/50–60Hz |
| Max. power input (kW) | 3.1 | 4.1 | 5.2 | 7.6 |
| Max. current (A) | 14.2 | 18.8 | 23.8 | 14.3 |
| Water flow (m³/h) | 1.43 | 1.96 | 2.55 | 3.78 |
| Net weight (kg) | 112 | 120 | 138 | 170 |
| Unit dimensions (mm) | 1080×460×820 | 1080×460×960 | 1080×480×1060 | 1080×480×1372 |
| Refrigerant | R290/1.0kg | R290/0.95kg | R290/1.45kg | R290/1.4kg |
Caldo All
Caldo All Series heat pumps efficiently produce domestic hot water using eco-friendly R290 refrigerant and renewable energy from ambient air. With hot water up to 75°C, high performance and an energy-saving design, they provide uninterrupted hot water comfort for residential applications.
COP 2.93~3.75Swipe to explore all specifications.
| Model | 200 L | 300 L |
|---|---|---|
| Installation type | Floor standing | Floor standing |
| Power supply | 220-240/1/50 | 220-240/1/50 |
| Tapping cycle | L | XL |
| Nominal heating capacity (kW) | 1.6 | 1.6 |
| Energy class | A+ | A+ |
| Heating capacity 7/6°C (kW) | 1.23 | 1.3 |
| COP 7/6°C | 2.93 | 3.15 |
| COP 14/13°C | 3.42 | 3.53 |
| COP 20/15°C | 3.65 | 3.75 |
| Refrigerant | R290/150g | R290/150g |
| Electric heater (kW) | 2 | 2 |
| Sound power level dB(A) | 55 | 55 |
| Max. water outlet temp. (°C) | 65 | 65 |
| Max. with backup heater (°C) | 75 | 75 |
| Temp. setting range (°C) | 15~75 | 15~75 |
| Rated water yield (L/h) | 39 | 34.4 |
| Inner tank | S235JR (enamel coated) or stainless steel | S235JR (enamel coated) or stainless steel |
| Insulation | Polyurethane 40 mm | Polyurethane 40 mm |
| Max. tank pressure (bar) | 6 | 6 |
| Net dimensions (mm) | Ø677 × 1520 | Ø677 × 1920 |
| Net weight (kg) | 93 | 117 |
Caldo Silent Pool
Operating between −7°C and 43°C, the Caldo Silent Pool heat pump heats pool water up to 40°C and cools it down to 9°C. Its corrosion-resistant ABS casing ensures long service life and suits pools from 20 to 130 m³. With Smart Life remote control and a high COP, it delivers efficient and reliable pool heating.
COP 4.8~7.4RefrigerantR32
Power supply230V/1Ph/50Hz
CompressorPanasonic
Heating water9~40°C
Cooling water9~35°C
ConnectionΦ50
Swipe to explore all specifications.
| Model | 10 kW | 11 kW | 14 kW | 17 kW | 20 kW | 24 kW | 28 kW | 33 kW |
|---|---|---|---|---|---|---|---|---|
| Advised pool volume (m³) | 20~40 | 25~50 | 30~60 | 40~75 | 55~100 | 70~130 | 60~120 | 70~130 |
| Heating capacity (kW) | 9.50~21.00 | 11.00~25.00 | 14.00~31.50 | 17.00~37.50 | 20.00~40.00 | 24.00~48.00 | 28.00~56.00 | 32.50~65.00 |
| Power consumption (kW) | 1.43~3.21 | 1.77~3.23 | 2.12~3.44 | 2.58~3.36 | 3.25~4.40 | 3.89~4.49 | 4.54~4.62 | 5.29~7.02 |
| COP | 5.0~7.2 | 4.8~7.2 | 5.0~7.1 | 5.0~7.4 | 4.8~7.0 | 4.8~7.0 | 4.8~7.0 | 4.8~7.0 |
| COP at 50% capacity | 6.50 | 6.50 | 6.50 | 6.50 | 6.50 | 6.50 | 6.50 | 6.50 |
| Cooling capacity (kW) | 5.2 | 6.0 | 7.2 | 8.6 | 10.1 | 11.8 | 13.8 | 15.6 |
| Sound pressure @1 m dB(A) | 38~48 | 40~50 | 42~51 | 43~52 | 43~53 | 44~54 | 45~56 | 45~57 |
| Sound pressure @10 m dB(A) | 18~25 | 19~26 | 22~27 | 23~30 | 24~31 | 25~32 | 26~34 | 26~35 |
| Advised water flow (m³/h) | 2~4 | 3~5 | 4~6 | 6~9 | 8~10 | 9~12 | 10~14 | 12~16 |
| Net/gross weight (kg) | 62/70 | 64/72 | 77/87 | 81/91 | 81/91 | 95/105 | 110/122 | 115/127 |
| Unit dimensions (mm) | 1000×396×640 | 1000×396×640 | 1125×416×765 | 1125×416×765 | 1125×416×765 | 1156×430×905 | 1156×430×905 | 1156×430×905 |
Caldo Commercial Duo
The Caldo Commercial Duo Series offers efficient heating, cooling and hot water with eco-friendly R290 refrigerant. It operates down to −25°C, delivers hot water up to 78°C and is suitable for commercial and industrial applications. High COP/EER values, low noise and a durable design ensure reliable performance.
COP 3.80~5.02Power supply380~415V/3Ph/50-60Hz
Operating range−25~43°C
Hot water20~78°C
Heating water20~78°C
Cooling water7~30°C
IP ratingIPX4
Swipe to explore all specifications.
| Model | 50 kW | 92 kW |
|---|---|---|
| Heating capacity (kW) · 30/35°C | 18.4~49.25 | 35.2~92 |
| Heating power consumption (kW) | 4.23~12.98 | 7.0~23.8 |
| Heating COP | 3.8~4.3 | 3.86~5.02 |
| DHW capacity (kW) · 15/55°C | 23.8~68 | 40.0~120 |
| DHW COP | 4.46~5.62 | 4.06~5.5 |
| Heated water output (L/h) | 1462 | 2580 |
| Cooling capacity (kW) | 13.8~34.5 | 25~66 |
| EER | 2.1~2.65 | 2.15~2.8 |
| Max. power consumption (kW) | 20 | 40 |
| Max. current (A) | 32 | 64 |
| Circuit breaker (A) | 40 | 80 |
| Power cable size | 10mm² | 22mm² |
| Pipe diameter | G1.5" | G2" |
| Sound pressure dB(A) | ≤62 | ≤65 |
| Max. water flow (m³/h) | 8.6 | 17.2 |
| Net weight (kg) | 370 | 745 |
| Unit dimensions (mm) | 1195×980×1900 | 2510×979×1882 |
| Refrigerant | R290/4.0kg | R290/8.0kg |
Caldo Commercial Pool
A commercial pool heat pump lowers heating costs with its high COP. Designed for 40–500 m³ pools, it is ideal for hotels, water parks and sports facilities. Operating between −7°C and 43°C, it provides pool water up to 43°C for reliable, year-round performance.
COP 6.0~6.2RefrigerantR410A
Power supply380~400V 3PH~50Hz
Max. outlet43°C
Operating range−7~43°C
IP ratingIPX4
Heat exchangerTitanium in PVC housing
Swipe to explore all specifications.
| Model | 26 kW | 52 kW | 75 kW | 100 kW | 121 kW | 145 kW |
|---|---|---|---|---|---|---|
| Nominal power input (kW) | 4.2 | 8.4 | 12.1 | 16.8 | 20.2 | 23.8 |
| COP | 6.2 | 6.1 | 6.2 | 6.0 | 6.0 | 6.1 |
| Noise level dB(A) | 56 | 58 | 60 | 62 | 64 | 66 |
| Water pressure drop (kPa) | 50 | 50 | 50 | 45 | 45 | 50 |
| Nominal water flow (m³/h) | 11.2 | 22.1 | 32.3 | 43 | 52 | 62.4 |
| Pipe connection | G1½″ (female) | G2″ (female) | G2″ (female) | DN110 (PVC flange) | DN110 (PVC flange) | DN110 (PVC flange) |
| Net weight (kg) | 135 | 200 | 248 | 352 | 465 | 465 |
| Dimensions L×W×H (mm) | 740×805×1165 | 1500×750×1075 | 1530×790×1100 | 1705×1005×1230 | 2005×1050×1400 | 2005×1050×1400 |
System components
Storage tanks
Heat pump compatible tanks for storing thermal energy, producing domestic hot water and integrating solar energy.
Solibuffer
Stores thermal energy in heat pump and heating systems. It provides hydraulic separation and reduces frequent compressor cycling for steadier, more efficient heating.
- 50 to 1000 litres
- Up to 6 bar · 95 °C
- PU or sponge insulation, 30 to 80 mm
Solitank
Combines domestic hot water production and buffer storage in one compact system. Its AISI 316L stainless steel heat exchanger ensures hygienic hot water and efficient heat transfer.
- 200 to 1000 litres
- AISI 316L heat exchanger
- Up to 6 bar · 95 °C
Solikombi
Brings domestic hot water, solar storage and buffer functions together in one tank, with AISI 316L stainless steel heat exchangers. Fully compatible with heat pumps.
- 300 to 1000 litres
- Solar input connection
- AISI 316L heat exchangers
Enamel TSE-VS HP
Enamelled tank for domestic hot water storage in heat pump systems, with a high-performance heat exchanger and polyurethane insulation for a long service life.
- 160 to 500 litres
- Enamelled · single coil
- 50 mm PU insulation
Nominal volumes. Contact us for the full technical data of each tank.
2026 Catalogue
The full Caldorelli range in one document.
15 pages covering the six heat pump series, the storage tanks and the full technical tables for every model.
- Six heat pump series, from 8 to 145 kW
- Solibuffer, Solitank, Solikombi and Enamel TSE-VS HP tanks
- Test conditions and technical data for every model
Why Caldorelli?
Backed by strong engineering and in-house manufacturing in renewable heating.
High Efficiency
Delivers more energy than it uses by moving heat instead of generating it.
Eco Solution
Uses renewable ambient air and low-GWP refrigerants to reduce environmental impact.
Lower Energy Costs
Reduces energy bills while maintaining superior comfort and performance.
Quiet Comfort
Engineered for low-noise operation and a peaceful comfort experience.
The brand
The ideal climate, in every season.
Caldorelli is a brand of air-to-water heat pumps for heating, cooling and domestic hot water. The range covers six series, from 8 kW residential units to 145 kW solutions for commercial pools, with R32, R290 and R410A refrigerants and operation down to −30 °C.
The brand identity draws on the Italian tradition of home comfort: warmth in winter, freshness in summer and care in every detail.
How does a heat pump work?
An air-to-water heat pump moves heat from the outdoor air into your building. It provides heating in winter, cooling in summer and domestic hot water all year round, using less energy because it moves heat instead of generating it.
Absorbs energy from ambient air
The outdoor unit draws in air and captures natural heat energy, even in cold conditions.
Upgrades heat via the refrigerant cycle
The refrigerant absorbs, compresses and releases heat at a higher temperature for efficient use.
Provides heating, cooling and hot water
The upgraded heat is distributed inside to provide year-round comfort and hot water.
Buying guide
How to choose the right heat pump
The right series depends on the application, the water temperature you need, the climate and the available power supply. Use this guide as a starting point. Final sizing should be done by a qualified installer.
House or apartment with underfloor heating or fan coilsCaldo Up8 to 35 kW. EVI DC inverter technology with R32, operation down to −30 °C and domestic hot water up to 60 °C.
Villa with radiators or a need for hotter waterCaldo Boost8 to 22 kW. With R290 it heats system water up to 70 °C and reaches an SCOP of up to 4.69 at 35 °C flow, according to EN 14825.
Domestic hot water onlyCaldo All200 L tank (load profile L) or 300 L tank (load profile XL), energy class A+ and water up to 75 °C with the backup heater.
Residential swimming poolCaldo Silent PoolFor pools of 20 to 130 m³. Choose the model by volume: the 10 kW model covers 20 to 40 m³ and the 33 kW model 70 to 130 m³.
Commercial and industrial buildingsCaldo Commercial Duo50 or 92 kW, hot water up to 78 °C and an output of 1,462 or 2,580 litres per hour. Three-phase 380–415 V supply.
Pools in hotels, water parks and sports facilitiesCaldo Commercial Pool26 to 145 kW for pools of 40 to 500 m³, with a titanium heat exchanger in PVC housing and a COP of 6.0 to 6.2.
What to consider before choosing
- Heat demandThe capacity (kW) depends on floor area, insulation and climate, and should be calculated by a professional.
- Water temperatureUnderfloor heating runs at around 35 °C, radiators at higher temperatures such as 55 °C. The lower the temperature, the higher the efficiency. On the Caldo Boost, SCOP rises from 3.37–3.55 at 55 °C to 4.60–4.69 at 35 °C.
- ClimateCheck each series' minimum outdoor operating temperature: −30 °C for Caldo Up, −25 °C for Caldo Boost and Commercial Duo, −7 °C for Caldo All and the pool series.
- Domestic hot waterDefine daily consumption and storage volume. Solitank and Enamel TSE-VS HP tanks complete the system.
- Power supplyLarger models need a three-phase connection. In the Caldo Up range, the 8 to 18 kW models are single-phase (230 V) and the 23 to 35 kW models three-phase (380 V).
- Location and noiseChoose a well-ventilated spot for the outdoor unit and compare the sound levels listed in the technical data.
Frequently asked questions
Everything you need to know about heat pumps
Straight answers on how heat pumps work, efficiency, installation and choosing a Caldorelli series.
Talk to a specialistWhat is an air-to-water heat pump?
It is a system that captures thermal energy from the outdoor air and, through a refrigerant cycle, transfers it to the water in your heating circuit and to your domestic hot water. Because it moves heat instead of generating it, it delivers more heat than the electricity it uses. The same unit can heat in winter, cool in summer and produce hot water all year round.
Does a heat pump work below freezing?
Yes. The Caldo Up, with EVI technology, operates at outdoor temperatures down to −30 °C. The Caldo Boost and Caldo Commercial Duo operate down to −25 °C. The Caldo All and the pool heat pumps operate from −7 °C. Capacity and COP vary with the outdoor temperature.
What does COP mean, and how is it different from SCOP?
COP (coefficient of performance) is the ratio of heat delivered to electricity used at a test point. A COP of 4 means 4 kWh of heat for every kWh of electricity. SCOP is the seasonal value, calculated over a typical heating season according to EN 14825, so it better reflects year-round performance.
How much can I save with a heat pump?
Savings depend on the system you replace, energy prices, the building's insulation and the water temperature. As a reference, Caldorelli series have COPs between 2.93 and 7.4 under test conditions, so each kWh of electricity becomes several kWh of heat. For an estimate for your project, ask our team for a study.
What is the difference between R32, R290 and R410A refrigerants?
R290 (propane) is a natural refrigerant with a very low global warming potential (GWP). It is used in the Caldo Boost, Caldo All and Caldo Commercial Duo, which produces hot water up to 78 °C. R32 has a GWP of about one third of R410A and is used in the Caldo Up and Caldo Silent Pool. R410A is used in the Caldo Commercial Pool.
Can a heat pump also cool my home in summer?
Yes. The Caldo Up, Caldo Boost and Caldo Commercial Duo series are reversible and produce chilled water for cooling, with flow temperatures from 7 °C up to 25–35 °C depending on the series. Cooling is delivered through fan coils or underfloor systems designed for cooling.
Can I connect a heat pump to my existing radiators?
In many cases, yes. The Caldo Boost heats system water up to 70 °C and the Caldo Commercial Duo up to 78 °C, temperatures suitable for radiators. Efficiency is higher at lower water temperatures, so an installer should check whether your existing radiators heat the rooms well at moderate temperatures.
What capacity do I need for my home?
It depends on floor area, insulation, climate and the water temperature you need, and it should be calculated by a professional. The residential range goes from 8 to 35 kW with the Caldo Up and from 8 to 22 kW with the Caldo Boost. Send us your project details through the form and we will help you choose the model.
Does a heat pump produce domestic hot water?
Yes. The Caldo Up produces domestic hot water up to 60 °C and the Caldo Commercial Duo up to 78 °C, connected to a storage tank. The Caldo Boost delivers 159 to 377 litres of hot water per hour, depending on the model. The Caldo All is a dedicated hot water heat pump with a built-in 200 or 300 litre tank.
Which heat pump should I choose for my pool?
For residential pools of 20 to 130 m³, the Caldo Silent Pool series offers 10 to 33 kW models, chosen by water volume. For pools of 40 to 500 m³ in hotels, water parks and sports facilities, the Caldo Commercial Pool series offers 26 to 145 kW models. Both use a titanium heat exchanger and must be installed with PVC piping.
How warm can a heat pump make my pool?
The Caldo Silent Pool heats water up to 40 °C and can also cool it down to 9 °C. The Caldo Commercial Pool supplies water up to 43 °C. Both operate at air temperatures from −7 °C to 43 °C.
Are Caldorelli heat pumps noisy?
Sound levels for each model are listed in the technical data. For example, the Caldo Boost runs at 43 to 45 dB(A) at 1 metre and the Caldo Silent Pool at 18 to 35 dB(A) at 10 metres. Where you place the outdoor unit also affects the noise you hear.
Can I control the heat pump from my phone?
Yes. The Caldo Up has Wi-Fi control with 0.1 °C precision, the Caldo Boost has Wi-Fi and IoT control, and the Caldo Silent Pool can be controlled remotely with the Smart Life app.
Do I need a buffer tank?
A buffer tank hydraulically separates the heat pump from the heating circuit and reduces frequent compressor cycling, which steadies operation and improves system efficiency. The Solibuffer series is available from 50 to 1000 litres. Whether you need one depends on the water volume of your system and should be confirmed by your installer.
What power supply is required?
The 8 to 18 kW Caldo Up, the 8 to 15 kW Caldo Boost, the Caldo Silent Pool and the Caldo All run on a 230 V single-phase supply. The 23 to 35 kW Caldo Up, the 22 kW Caldo Boost, the Caldo Commercial Duo and the Caldo Commercial Pool need a three-phase supply.
Does R290 refrigerant need special care during installation?
Yes. R290 is a flammable natural refrigerant (class A3). Installation and servicing must therefore be carried out by qualified technicians, following the required safety distances and applicable regulations.
What maintenance does a heat pump need?
We recommend a periodic check by a qualified technician: cleaning the outdoor unit's coil and the water filter, checking circuit pressure and flow, and making sure condensate drains properly. Regular maintenance helps keep efficiency high over the years.
Are the technical values guaranteed?
Technical data are nominal values obtained under the standard test conditions shown in each table. Real performance varies with climate, installation and use, and specifications may change without notice.
How do I request a quote?
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Glossary
Technical terms, explained
The terms you will find on heat pump data sheets.
- COP
- Coefficient of performance: heat delivered divided by electricity used, measured at a test point.
- SCOP
- Seasonal COP: average efficiency over a heating season, calculated according to EN 14825.
- EER
- Energy efficiency ratio in cooling: cooling delivered divided by electricity used.
- ηs
- Seasonal space heating energy efficiency, expressed as a percentage and used on the EU energy label.
- EVI
- Enhanced vapour injection: a compressor technology that maintains capacity and efficiency at very low outdoor temperatures.
- DC inverter
- A variable-speed compressor that matches output to actual demand and avoids frequent on-off cycling.
- R32
- Refrigerant with a GWP of about one third of R410A. Used in the Caldo Up and Caldo Silent Pool.
- R290
- Propane: a natural refrigerant with very low GWP, flammable (class A3), used in the Caldo Boost, Caldo All and Caldo Commercial Duo.
- R410A
- HFC refrigerant used in the Caldo Commercial Pool.
- GWP
- Global warming potential: how strongly a gas contributes to the greenhouse effect compared with CO₂.
- DHW
- Domestic hot water: the hot water used for showers, kitchens and basins.
- Buffer tank
- A tank that stores heating circuit water, separates the system hydraulically and reduces compressor starts.
- Load profile (L, XL)
- Hot water consumption class used on the energy label of water heaters. Profile XL means higher consumption than profile L.
- IPX4
- Protection against water splashing from any direction, suitable for outdoor units.
- Titanium heat exchanger
- A corrosion-resistant heat exchanger suited to pool water treated with chlorine or salt.
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