❄️ Balboa Clim8zone II Mini 4kW Heat Pump – Compact Heating & Cooling for Spas & Ice Baths

Ultra-compact heat pump with powerful 4kW output – perfect for hot tubs, cold plunge pools, and ice bath therapy down to 5°C.

📋 Product Overview

The Balboa Clim8zone™ II Mini represents the next generation of compact spa heat pump technology, delivering efficient heating and cooling in a remarkably small footprint. With 4kW heating capacity and the ability to cool water down to 5°C (V2 model), this versatile unit is ideal for both traditional hot tub heating and the growing cold plunge therapy market.

Despite its compact dimensions of just 498 × 495 × 486 mm, the Clim8zone II Mini offers the same intelligent inverter technology as its larger sibling, with a COP of 5 to 10 times that of traditional electric heaters. The variable speed compressor with smart algorithm automatically adjusts output based on ambient and water temperatures, delivering whisper-quiet operation at less than 45 dBA.

Available in two versions: the V1 model cools down to 8°C, while the enhanced V2 model reaches 5°C for optimal ice bath therapy. Both integrate seamlessly with Balboa BP series control systems, allowing full control through your existing spa topside panel.

⭐ Key Features

✅ 4kW Heating Capacity – Efficient output for hot tubs and spas up to 15m³ volume

✅ Cooling Down to 5°C (V2) – Perfect for cold plunge therapy and ice bath applications

✅ Ultra-Compact Design – Just 498 × 495 × 486 mm fits in tight spaces

✅ COP 5-10 (up to 15) – Delivers 5 to 10 times more heat energy than electricity consumed

✅ Whisper-Quiet Operation – Less than 45 dBA, quieter than the larger Clim8zone I

✅ Variable Speed Inverter – Smart algorithm automatically optimises compressor frequency

✅ Cold Climate Operation – Functions effectively down to -5°C ambient temperature

✅ Balboa BP Integration – Direct connection to BP series control systems with visual indicators

✅ SpaTouchMini Upgrade Option – Bezel covers existing TP600 holes for easy retrofit

✅ R32 Refrigerant – Environmentally responsible refrigerant with lower GWP

✅ Lightweight Design – Only 40 kg for easier installation

✅ 1.5″ Plumbing Connections – Standard unions included for easy installation

✅ Dual Mode Operation – Use alone, with electric heater, or both simultaneously

🔧 Technical Specifications

Specification	Value
Part Number	73005
Model	Clim8zone II Mini
Product Type	Air Source Heat Pump (Reversible)
Heating Capacity @27°C ambient	4.0 kW
Heating Capacity @15°C ambient	2.5 kW
Cooling Capability (V1)	Down to 8°C
Cooling Capability (V2)	Down to 5°C
COP Range	5 to 10 (up to 15 under optimal conditions)
Input Voltage	220-240 V
Frequency	50 Hz
Maximum Current	5.5 A
Operating Temp Range (Ambient)	-5°C to 43°C
Water Temp Range (Heating)	Up to 40°C
Water Temp Range (Cooling)	Down to 5°C (V2) / 8°C (V1)
Recommended Pool Volume	5-15 m³
Optimal Water Flow	1.7 m³/h (28 LPM)
Refrigerant	R32
Compressor Type	Rotary Inverter (GMCC)
Noise Level	< 45 dBA
IP Rating	IPX4
Plumbing Connections	1.5″ (unions included)
Dimensions (L × W × H)	498 × 495 × 486 mm (19.6″ × 19.5″ × 19.1″)
Weight	40 kg
Installation	Outdoors only
Season	All year round

🔗 Compatibility Guide

Compatible Control Systems

The Clim8zone II Mini requires BP series control systems with “-C8Z” suffix.

System Code	System Name
BP6013G1-C8Z	BP601 3G1
BP6013G2-C8Z	BP601 3G2
BP6013G3-C8Z	BP601 3G3
BP2100G0-C8Z	BP2100 G0
BP2100G1-C8Z	BP2100 G1
BP214PBC-C8Z	BP21P4 BC

Compatible Topside Panels

Panel Type	Compatibility	Notes
spaTouch 3	✅ Compatible	Shows Clim8zone icons
spaTouch 2	✅ Compatible	Full integration
spaTouch Mini	✅ Compatible	Can cover TP600 hole with bezel
TP700	✅ Compatible	Shows heating/cooling indicators
TP740 (Trap/Square/T)	✅ Compatible	Full indicator support

Display Indicators

Indicator	Colour	Meaning
🔴 Red	Heating	Clim8zone is heating to reach set temperature
🔵 Blue	Cooling	Clim8zone is cooling to reach set temperature
Continuous	Both	eHeater + Clim8zone running together

⚠️ Important: The popular TP600 series is NOT directly compatible with the Clim8zone II Mini. However, the SpaTouchMini with its bezel can cover a TP600 hole as an upgrade option.

Ice Bath / Chiller Setup

For standalone ice bath or cold plunge use without a Balboa system:

Component	Product
Control System	Joyonway P68B123
Topside Panel	Joyonway PB562

💡 Note: The Clim8zone II Mini can function manually as a chiller using its built-in keypad, but the Joyonway system provides a complete, user-friendly ice bath control solution.

Suitable Applications

Application	Suitability	Notes
♨️ Hot Tubs (up to 15m³)	✅ Ideal	Primary design application
❄️ Ice Baths	✅ Ideal (V2)	V2 cools to 5°C
❄️ Cold Plunge Pools	✅ Recommended	Excellent for cold therapy
🛁 Chill Therapy Spas	✅ Compatible	Including Canadian Spa models

💚 Energy Efficiency & Savings

Coefficient of Performance (COP)

Condition	Heating Output	Approximate COP
@27°C ambient	4.0 kW	5-10
@15°C ambient	2.5 kW	4-6
Optimal conditions	Up to 4.0 kW	Up to 15

Estimated Savings

• Up to 75% reduction in heating costs compared to traditional electric heater
• Variable speed compressor minimises energy consumption at partial load
• Smart algorithm continuously adjusts for maximum efficiency

Real-World Performance

At 27°C ambient temperature, you’ll get approximately 4kW of heating output. At 15°C (more typical UK conditions), expect around 2.5kW of heating capacity.

🎛️ Operating Modes

Temperature Modes

Mode	Function	Best For
🔥 Heat Only	Heats water to set temperature	Winter hot tub use
❄️ Cool Only	Cools water to set temperature (5°C V2 / 8°C V1)	Ice bath therapy, cold plunge
🔄 Heat and Cool (Auto)	Maintains set temperature automatically	Year-round temperature control
⏸️ Disabled	Heat pump switched off	Seasonal shutdown

Speed Mode

Mode	Description
Auto Smart	AI algorithm automatically adjusts compressor frequency based on conditions for optimal efficiency

Heater Integration Options (PDF-Confirmed)

Setting	Description	Display
Clim8zone Only	Heat pump provides all heating/cooling	Standard icons
Electric Heater Only	Traditional spa eHeater operates alone	eHeater icon
Both Simultaneously	eHeater + Clim8zone running together	CONTINUOUS indicator

💡 Tip: Running both the Clim8zone and traditional electric heater together provides the fastest heating times.

🛠️ Installation Requirements

⚠️ IMPORTANT: Installation must be carried out by a qualified professional.

Location Requirements

• ☑️ Outdoor installation only – Never install indoors
• ☑️ Level, stable surface – Concrete slab or platform
• ☑️ Compact footprint – Only 498 × 495 mm required

Electrical Requirements

Requirement	Specification
Supply Voltage	220-240 V AC
Frequency	50 Hz
Maximum Current	5.5 A
RCD Protection	Required (30mA recommended)
Earth/Bonding	Mandatory

Plumbing Requirements

Requirement	Specification
Connection Size	1.5″
Unions	Included
Recommended Flow Rate	1.7 m³/h (28 LPM)

Included Accessories

• ✅ 1.5″ pump unions with gaskets
• ✅ Condensation drain fittings
• ✅ Data cable for BP system connection
• ✅ Power cable with connector

⚠️ Safety Warnings

Electrical Safety

• ⚠️ ALWAYS disconnect power before any work
• ⚠️ Installation by qualified professional only
• ⚠️ Ensure correct voltage supply (220-240V in UK)
• ⚠️ Verify RCD protection is installed and working
• ⚠️ Earth bonding connection is mandatory

Operational Safety

• ⚠️ Never operate indoors – outdoor use only
• ⚠️ Keep all air vents unobstructed at all times
• ⚠️ Unit must be stored, transported and installed vertically

Winter/Freeze Protection

• ⚠️ If powering off during freezing conditions, drain all water from the heat pump
• ⚠️ Operating range is -5°C to 43°C ambient – do not operate below -5°C

Warranty Note

• ⚠️ Must be installed by a qualified individual or tradesperson
• ⚠️ Heat pumps opened or installed are exempt from standard returns policy
• ⚠️ Suspected faults must be returned within warranty period for manufacturer inspection

🆚 V1 vs V2 Comparison

Feature	Clim8zone II Mini V1	Clim8zone II Mini V2
Heating Capacity	4.0 kW	4.0 kW
Minimum Cooling Temp	8°C	5°C
Ice Bath Suitable	⚠️ Limited	✅ Ideal
Cold Plunge Therapy	✅ Good	✅ Excellent
Hot Tub Use	✅ Ideal	✅ Ideal

💡 Recommendation: For ice bath applications, choose the V2 model which cools down to 5°C.

🎯 Ideal Applications

Application	Suitability	Notes
♨️ Standard Hot Tubs	✅ Ideal	Spas up to 15m³ volume
❄️ Ice Baths	✅ Excellent (V2)	Cools to 5°C for cold therapy
❄️ Cold Plunge Pools	✅ Recommended	Popular for recovery and wellness
🏠 Small Footprint Installations	✅ Perfect	Compact design fits tight spaces
🔄 Retrofit Upgrades	⚠️ Check Compatibility	Requires C8Z-compatible system

This Heat Pump is Designed For:

• Compact hot tub installations where space is limited
• Cold water therapy and ice bath applications
• Energy-efficient spa heating with up to 75% cost savings
• Quiet operation in residential environments
• Year-round temperature control (heating and cooling)

❓ Frequently Asked Questions

Q: What’s the difference between V1 and V2?

A: The V1 cools water down to 8°C, while the V2 reaches 5°C. For ice bath use, the V2 is recommended.

Q: Will it work with my existing Balboa system?

A: Only if your control system ends in “-C8Z”. The popular TP600 topside is NOT directly compatible, but SpaTouchMini with its bezel can cover a TP600 hole as an upgrade option. Check your system part number before ordering.

Q: How much can I save on running costs?

A: With a COP of 5-10, expect up to 75% savings compared to a traditional electric heater.

Q: Is it quiet enough for residential use?

A: Yes, at less than 45 dBA it’s quieter than a typical refrigerator and won’t disturb neighbours.

Q: Can I use it for an ice bath without a Balboa system?

A: Yes, it has a built-in keypad for standalone operation. For a complete ice bath control solution, pair with the Joyonway P68B123 control system and PB562 topside.

Q: What size spa is it suitable for?

A: Recommended for spas with water volumes of 5-15 m³.

Q: Will it work in UK winters?

A: Yes, it operates down to -5°C ambient temperature. For colder conditions, consider the larger Clim8zone I which operates to -20°C.

Q: Do I need a qualified installer?

A: Yes. Professional installation is required for warranty coverage and safety compliance.

📥 Downloads & Resources

📄 Info Sheet – Product specifications and features

🏆 Why Choose Clim8zone II Mini

• ✅ Ultra-compact design – Fits where larger heat pumps won’t
• ✅ Dual functionality – Both heating AND cooling in one unit
• ✅ Ice bath ready (V2) – Cools to 5°C for cold therapy
• ✅ Whisper-quiet operation – Less than 45 dBA
• ✅ Energy efficient – COP of 5-10, up to 75% savings
• ✅ Smart inverter technology – AI-powered efficiency optimisation
• ✅ Lightweight – Only 40 kg for easier handling
• ✅ Balboa integration – Seamless control through existing topside

🤝 Why Buy From Parts4Tubs

• ✅ UK-based company with local support
• ✅ Fast UK delivery
• ✅ Expert technical advice from spa specialists
• ✅ Competitive pricing
• ✅ Full warranty support
• ✅ Easy returns within 30 days
• ✅ Help with compatibility checking
• ✅ Installation guidance available
• ✅ Both V1 and V2 models available

✨ Summary

The Balboa Clim8zone II Mini 4kW Heat Pump delivers exceptional versatility in a compact package. With 4kW heating capacity, cooling down to 5°C (V2), and whisper-quiet operation under 45 dBA, it’s the ideal choice for hot tubs, ice baths, and cold plunge therapy. The intelligent inverter technology provides COP of 5-10, reducing energy costs by up to 75%. Perfect for installations where space is limited or where dual heating and cooling functionality is required.