iSPA 40T
40 kW R290 DC Inverter Pool Heat Pump — 3-Phase
The Karnot iSPA 40T heats and cools swimming pools of 80–140 m³ on R290 natural refrigerant — 40 kW of heating for 6 kW of electricity at full load, and far less when cruising. Panasonic DC inverter compressor, dual-coil titanium heat exchanger in a PVC shell, full-colour touchscreen and Wi-Fi app control. Nameplate reference CGY-080V4-A. Three-phase supply for commercial sites.
Key Features at a Glance
R290 Natural Refrigerant
GWP 3 propane — outside the HFC phase-down that is removing R410A and R32. Optional factory leak sensor.
Dual-Coil Titanium Exchanger
Titanium tube in a PVC shell — safe with saltwater and chlorine, with more heat-transfer area than a single coil.
Panasonic DC Inverter Compressor
Variable speed matches output to the pool — COP 6.6 at full load, up to 23.7 at low speed.
Touchscreen + Wi-Fi App
Full-colour touchscreen on the unit, app control on your phone, over-the-air software updates.
Heats to 40 °C, Cools to 5 °C
Works in air from −20 °C to +43 °C. Heat the pool in the cool months, cool it when tropical sun overheats it.
Quiet — 46.5–55.5 dB(A) at 1 m
Soundproofed compressor compartment and low-speed cruising; 27.5–35.5 dB(A) at 10 m.
Ideal Applications
The iSPA 40T suits pools of 80–140 m³ — hotel, resort and commercial pools on a three-phase supply.
Residential Pools
Keep the pool swimmable all year — heat when it's cool, cool when the afternoon sun pushes it past 32 °C.
Hotels & Resorts
Guest-comfort temperature every day, at a fraction of the electric-heater bill. Quiet enough for poolside rooms.
Pool & Spa Combinations
One unit for the pool plus an adjacent spa or plunge pool.
Swim Schools & Therapy Pools
Steady water temperature for training and rehabilitation pools.
Recommended Pool Size
Advised Pool Volume
Outdoor pool, Philippine climate, pool cover recommended. Larger or windy pools — use the calculator on the iSPA page or ask us to size it.
Heating Performance
| Heating Capacity (Condition 1) 1 | 40 kW |
| COP at Full Load (Condition 1) 1 | 6.6 |
| COP Range, Full Load to Low Speed 1 | 6.6 – 23.7 |
| COP at 50% Capacity 1 | 15.9 |
| Heating Capacity (Condition 2) 2 | 30 kW |
| COP Range (Condition 2) 2 | 4.9 – 12.3 |
Cooling Performance
| Cooling Capacity (Condition 3) 3 | 22.8 kW |
| EER Range (Condition 3) 3 | 4.3 – 6.1 |
| Water Temperature Range | 5 °C (cooling) to 40 °C (heating) |
Technical Specifications
| Nameplate Reference | CGY-080V4-A |
| Power Supply | 380–420 V / 3 Ph / 50–60 Hz |
| Refrigerant | R290 (propane), GWP 3 |
| Compressor | Panasonic rotary, DC inverter |
| Rated / Max Power Input | 6 / 9.4 kW |
| Rated / Max Current | 11.5 / 16.8 A |
| Heat Exchanger | Dual-coil titanium tube in PVC shell |
| Advised Water Flow | 17.2 m³/h |
| Water Pressure Drop | 24 kPa |
| Water Connections | ø50 mm |
| Sound Pressure at 1 m / 10 m | 46.5–55.5 / 27.5–35.5 dB(A) |
| Operating Air Temperature | −20 °C to +43 °C |
| Controls | Colour touchscreen, Wi-Fi app, RS485, OTA updates |
Dimensions & Weight
| Dimensions (L×D×H) | 1260 × 475 × 1070 mm |
| Net Weight | 157 kg |
| Recommended Pool Volume | 80–140 m³ |
Pricing
| Price | Contact for Quotation |
1 Air 27 °C / Water 26 °C / Humidity 80%
2 Air 15 °C / Water 26 °C / Humidity 70%
3 Cooling: Air 35 °C / Water 28 °C / Humidity 64%
COP and EER ranges cover the full span of inverter modulation. Reference data — refer to the unit nameplate for model specifications.
Interested in the iSPA 40T?
Tell us the pool size and where it is — we will confirm the model and give you a monthly running-cost figure.
Frequently Asked Questions
What pool size is the iSPA 40T recommended for?
The iSPA 40T is recommended for swimming pools of 80–140 cubic metres. It delivers 40 kW nominal heating capacity at air 27°C / water 26°C, with a COP of 6.6 at full load and up to 23.7 when running at low speed.
Can the iSPA 40T both heat and cool a pool?
Yes. The iSPA 40T heats the pool to a maximum of 40°C and cools it down to 5°C water temperature — 40 kW heating and 22.8 kW cooling. A reversing valve switches the cycle automatically.
What refrigerant does the iSPA 40T use?
The iSPA 40T runs on R290 (propane), a natural refrigerant with a global warming potential of 3. It is not subject to the HFC phase-down that is removing R410A and R32 from the market, and it carries a factory-fitted leak sensor option.
What does the iSPA 40T cost to run?
At full load the iSPA 40T delivers 6.6 kWh of heat for every 1 kWh of electricity; cruising at part load it delivers two to three times that. A direct electric pool heater delivers 1 kWh for 1 kWh, so running cost is typically 80–90% lower. Use the pool calculator on the iSPA page for a monthly peso estimate.