🌡️ Gecko in.temp Mini Heat Pump (3kW) – Compact, Energy-Efficient Hot Tub Heating

Whisper-Quiet | Year-Round Comfort | Up to 75% Energy Savings

Product Overview

The Gecko in.temp Mini Heat Pump (3kW) delivers powerful, efficient heating for hot tubs and spas in an incredibly compact design. Using environmentally friendly R32 refrigerant, this heat pump extracts free renewable energy from the air to heat your spa water at a fraction of the cost of traditional electric heaters. Despite its small footprint, the in.temp Mini operates whisper-quiet at just 51dBA while providing reliable performance in temperatures from 0°C to 43°C.

Perfect for hot tub owners who want:

✅ Dramatic energy savings – 4-5x more efficient than electric heaters

✅ Year-round comfort – reliable heating in spring, summer, and autumn

✅ Seamless integration – plug-and-play with Gecko Y-series control systems

✅ Peace and quiet – remarkably low noise at 51dBA

✅ Eco-friendly operation – R32 refrigerant with reduced carbon emissions

🔑 Key Features & Benefits

Unbeatable Energy Efficiency

Save up to 75% on heating costs compared to traditional electric heaters. The in.temp Mini uses advanced heat pump technology to extract heat from ambient air, making it 4-5 times more efficient than standard resistance heating. Over a season, these savings add up to hundreds of pounds in reduced electricity bills.

Compact & Space-Saving Design

At just 412mm x 385mm x 350mm, the in.temp Mini fits easily into tight spaces around your hot tub or spa. The sleek, modern design blends into any outdoor setting, and the compact footprint means it won’t dominate your garden or patio area.

Whisper-Quiet Operation

With a noise level of only 51dBA (quieter than a normal conversation), you’ll barely notice it’s there. Enjoy peaceful relaxation in your spa without the distraction of noisy heating equipment.

Smart Integration with Gecko Systems

Seamlessly connects to Gecko IN.YE, IN.YT, and IN.YJ control systems via RS-485 communication. Control everything from your existing Gecko keypads (in.k330, in.k500, in.k800, in.k1000/1001) or through the in.touch 2 mobile app for ultimate convenience.

Three Intelligent Heating Modes

🌿 Eco Heat Mode – Uses only the heat pump for maximum energy savings 🧠 Smart Heat Mode – Combines heat pump with electric backup for faster heating when needed ⚡ Electric Mode – Uses electric heater only (traditional heating)

The system automatically optimizes performance based on ambient temperature, ensuring you always get the most efficient heating solution.

Eco-Friendly R32 Refrigerant

The in.temp Mini uses R32 refrigerant (180g charge), which has a significantly lower environmental impact than older refrigerants. R32 is ozone-friendly and helps dramatically reduce carbon emissions.

Corrosion-Resistant Titanium Heat Exchanger

The advanced titanium heat exchanger guarantees long-lasting performance and is fully compatible with all water treatment systems including chlorine, bromine, iodine, and salt water. Say goodbye to corrosion worries.

Built-In Safety & Protection

Multiple safety features provide peace of mind:

• Low water flow protection
• High/low pressure protection
• Compressor overload protection
• Thermal cutoff protection
• Automatic restart after power interruption
• Self-diagnostic error reporting

📊 Complete Technical Specifications

Specification	Details
Model	Gecko in.temp Mini (3kW)
Part Number	INTEMP-H30-CE / 0615-807006
Heating Capacity (A24/W26)	3.032 kW (Optimal conditions: 24°C air, 26°C water)
Heating Capacity (A15/W26)	1.945 kW (Cooler conditions: 15°C air, 26°C water)
Coefficient of Performance (COP)	4.41 (at optimal conditions) / 3.10 (at 15°C)
Power Input (Maximum)	0.93 kW
Average Power Input	0.68 kW
Current Draw	4.21 A
Input Voltage	220-240V~, 50Hz
Refrigerant Type	R32 (180g charge)
Compressor Type	Rotary (GREE)
Heat Exchanger	Titanium (corrosion-resistant)
Operating Temperature Range	0°C to 43°C (23°F to 109°F)
Noise Level	51.2 dB(A) at 1 metre
Water Flow Rate (Rated)	1.2 m³/h (5.28 GPM)
Best Efficiency Flow Rate	2.27 m³/h (10 GPM)
Water Connections	1.5-inch female sockets (38mm)
Dimensions (L x H x W)	412mm x 385mm x 350mm
Dimensions (Inches)	16.2″ x 15.2″ x 13.8″
Weight (Net)	21.5 kg (47.4 lbs)
Weight (Gross/Shipped)	23 kg (50.7 lbs)
Water Resistance Rating	IPX4
Communication Interface	RS-485 (10-12 Vdc, 80mA)
Flow Detection	Flow switch
Operation Mode	On/Off
Warranty Coverage	Standard manufacturer warranty

💰 Real-World Performance & Cost Savings

Estimated Running Costs Comparison

Based on typical UK electricity rates of £0.24/kWh (November 2025):

Heating Method	Power Draw	Cost per Hour	Daily Cost (8 hrs)	Monthly Cost (30 days)
Traditional 3kW Electric Heater	3.0 kW	£0.72/hr	£5.76	£172.80
Gecko in.temp Mini (Avg)	0.68 kW	£0.16/hr	£1.28	£38.40
Monthly Savings	–	–	–	£134.40
Annual Savings (9-month season)	–	–	–	£1,209.60

💡 That’s approximately 75% energy savings compared to traditional electric heating!

⚠️ Please note: Actual costs will vary based on your specific electricity tariff, ambient temperature conditions, water temperature set point, spa insulation quality, and usage patterns. These figures are estimates for comparison purposes.

🌡️ Hot Tub Sizing & Heat-Up Time Estimates

Suitable Hot Tub Sizes

The Gecko in.temp Mini (3kW) is ideal for:

• Small to medium hot tubs: 1,000 – 1,800 litres (220 – 400 gallons)
• 2-4 person spas
• Standard residential hot tubs

Estimated Heat-Up Times

These estimates show how long the in.temp Mini takes to raise water temperature under different conditions:

Optimal Conditions (24°C Ambient Temperature)

Heat output: 3.032 kW

Spa Volume	Temperature Rise	Estimated Time
1,000 litres (220 gal)	5°C (9°F)	1.9 hours
1,000 litres (220 gal)	10°C (18°F)	3.8 hours
1,500 litres (330 gal)	5°C (9°F)	2.9 hours
1,500 litres (330 gal)	10°C (18°F)	5.7 hours
1,800 litres (400 gal)	5°C (9°F)	3.4 hours
1,800 litres (400 gal)	10°C (18°F)	6.9 hours

Cooler Conditions (15°C Ambient Temperature)

Heat output: 1.945 kW

Spa Volume	Temperature Rise	Estimated Time
1,000 litres (220 gal)	5°C (9°F)	3.0 hours
1,000 litres (220 gal)	10°C (18°F)	6.0 hours
1,500 litres (330 gal)	5°C (9°F)	4.5 hours
1,500 litres (330 gal)	10°C (18°F)	8.9 hours
1,800 litres (400 gal)	5°C (9°F)	5.4 hours
1,800 litres (400 gal)	10°C (18°F)	10.7 hours

📋 Formula used: Time (hours) = (Volume in litres × Temperature Rise °C × 0.00116) ÷ Heat Pump kW Rating

⚠️ Important disclaimers:

• These are theoretical estimates based on ideal conditions
• Actual heat-up times will be affected by: spa insulation quality, cover effectiveness, wind exposure, ambient humidity, starting water temperature, and heat loss during heating
• In Smart Heat mode, the electric heater may assist to reduce heat-up times
• For faster initial heating, consider using Smart Heat mode, then switching to Eco Heat for maintenance

🔧 Installation Requirements

Space & Clearance Requirements

For optimal performance and ease of maintenance, ensure the following clearances:

Clearance Direction	Minimum Required
Air Inlet (Front)	0.7 metres (28″)
Air Outlet (Rear)	0.7 metres (28″)
Sides	0.3 metres (12″)
Top	0.5 metres (20″) – recommended for servicing

Installation Location Guidelines

✅ DO:

• Install on a solid, flat surface with slight rearward slope (for condensate drainage)
• Provide excellent ventilation with free airflow on all sides
• Install outdoors or in a well-ventilated area
• Position away from windows, bedrooms, and noise-sensitive areas
• Elevate at least 46cm (18″) above ground level in snowy climates
• Insulate external water pipes with foam insulation
• Install bypass valves inside the hot tub cabinet for easy winterization

❌ DON’T:

• Install in confined spaces (basements, enclosed garages)
• Block airflow with plants, fences, or structures
• Install where fan discharge faces dominant wind direction
• Position near sources of dust, debris, or polluted air
• Mount directly on walls (can cause vibration noise)

Plumbing Configuration

A three-valve bypass system must be installed to:

• Adjust water flow rate to the heat pump
• Isolate the unit for maintenance
• Enable complete winterization

⚡ Electrical connection:

• Connects to Gecko control system via included 5m RS-485 communication cable
• Powered through included 5m Euro power cord (18/3 AWG)
• No separate electrical circuit required – plug-and-play installation
• Can optionally be powered by external breaker if required

🛡️ Safety requirements:

• Must be properly grounded
• Requires RCD (residual current device) ≤30mA
• All-pole disconnect device with ≥3mm clearance required

📦 What’s Included

Your Gecko in.temp Mini package contains everything needed for installation:

✅ Gecko in.temp Mini heat pump unit ✅ Accessory kit including:

• 4 rubber mounting feet (vibration dampening)
• 1.5-inch (38mm) pipe fittings/adaptors
• Drain hose and adaptor ✅ 5-metre RS-485 communication cable (pre-installed) ✅ 5-metre Euro power cord, 18/3 AWG (pre-installed) ✅ Installation & operation manual

Optional Accessories (Sold Separately)

• 600AB0258 – 10-metre RS-485 communication cable extension
• 600DA0306 – 10-metre Euro power cord extension (18/3 AWG)
• 9920-201308 – Daughterboard for in.ye-V3 control systems (if RS-485 upgrade needed)

🎛️ Compatible Control Systems

Gecko Control Systems

The in.temp Mini integrates seamlessly with the following Gecko controllers:

✅ IN.YE series (V2 and V3 with RS-485) ✅ IN.YT series (V2 and V3 with RS-485) ✅ IN.YJ series

Compatible Keypads

Control your heat pump through these Gecko keypads:

• in.k330 – Colour LCD, 5 keys
• in.k500 – Colour LCD, 7 keys
• in.k800 – Colour LCD, 10 keys
• in.k1000/1001 – Colour capacitive touchscreen displays

Mobile App Control

📱 in.touch 2 compatible – Control your heat pump remotely via smartphone app for ultimate convenience. Monitor temperature, change heating modes, and track energy savings from anywhere.

🌍 Environmental & Sustainability Benefits

Eco-Friendly Heating Technology

The Gecko in.temp Mini represents a significant step toward sustainable spa ownership:

🌿 Renewable Energy: Extracts free heat from ambient air rather than generating it through electricity ♻️ R32 Refrigerant: Low global warming potential (GWP) compared to older refrigerants 📉 Reduced Carbon Footprint: Up to 75% lower energy consumption = dramatically reduced CO₂ emissions ⚡ Efficient COP: Coefficient of Performance of 4.41 means you get 4.4kW of heat for every 1kW of electricity used

Environmental impact comparison: If you heat your spa for 8 hours daily over a 9-month season using the in.temp Mini instead of a traditional electric heater, you could reduce CO₂ emissions by approximately 1,800kg annually (based on UK grid carbon intensity averages).

❄️ Winter Operation & Freeze Protection

Cold Weather Performance

The in.temp Mini operates reliably in temperatures from 0°C to 43°C (23°F to 109°F). Key cold-weather features include:

Automatic freeze protection – System monitors water temperature and activates electric heater backup if water approaches freezing point Defrost cycle – Automatically defrosts evaporator coils when needed Smart mode switching – If ambient temperature impacts efficiency, system automatically uses electric backup to maintain performance

Winterization for Extended Shutdown

If closing your hot tub for winter, proper winterization prevents freeze damage:

Essential steps:

1. Disconnect power at main breaker
2. Close inlet and outlet bypass valves
3. Disconnect water plumbing
4. Remove drain plug and fully drain heat exchanger
5. Blow out remaining water with compressed air
6. Loosely reconnect fittings to prevent debris entry
7. Cover unit with protective tarp

⚠️ Critical: Warranty does not cover freeze damage from inadequate winterization. If keeping your hot tub operational in winter, ensure continuous circulation and frost protection remains active.

🔧 Maintenance & Cleaning

Regular Maintenance Schedule

The in.temp Mini requires minimal maintenance to maintain peak performance:

Before each heating season:

• Clear leaves, twigs, and debris from air intake and exhaust grilles
• Inspect finned heat exchanger for blockages
• Clean with compressed air or water (avoid high pressure)
• Check rubber mounting feet for wear

Monthly during operating season:

• Visually inspect for debris accumulation
• Check water bypass valves operate smoothly
• Monitor for any unusual noises or vibrations

Annually:

• Professional inspection of refrigerant levels (if needed)
• Check titanium heat exchanger for contamination
• Verify electrical connections are secure

Self-Diagnostic System

The in.temp Mini features intelligent self-diagnosis:

• Automatically detects faults and displays error codes on your Gecko keypad
• Provides clear troubleshooting guidance
• Built-in protection prevents operation when conditions are unsafe

Common error codes monitored:

• HP99 – Communication error
• HP41 – Water flow protection
• HP05 – Coil temperature sensor
• HP22 – Ambient temperature sensor
• HP65 – Ambient temperature too low
• And more (see technical manual for complete list)

💡 Frequently Asked Questions

General Questions

Q: How much can I really save on heating costs? A: The in.temp Mini is typically 4-5 times more efficient than electric heaters, translating to approximately 75% savings on heating costs. For a typical hot tub owner, this could mean saving £100-150 per month during the heating season. Actual savings depend on your electricity rates, usage patterns, and ambient temperatures.

Q: Will this heat pump work in winter? A: Yes, the in.temp Mini operates in temperatures from 0°C to 43°C (23°F to 109°F). Performance gradually decreases in colder weather – at 15°C ambient temperature, it produces 1.945kW instead of 3.032kW at 24°C. The Smart Heat mode automatically engages electric backup heating when needed to maintain efficiency.

Q: How loud is this heat pump? A: At just 51dBA (measured at 1 metre), the in.temp Mini is quieter than a normal conversation (60dBA) and much quieter than a refrigerator (50-55dBA). Most users report barely noticing it during operation.

Q: Is this suitable for my hot tub size? A: The 3kW in.temp Mini is ideal for small to medium hot tubs (1,000-1,800 litres / 220-400 gallons), typically 2-4 person spas. For larger commercial spas or swim spas, consider larger Gecko heat pump models.

Installation & Compatibility

Q: Can I install this myself? A: While the in.temp Mini features plug-and-play connectivity to Gecko control systems, professional installation is highly recommended. Installation involves plumbing work, electrical connections, and ensuring proper bypass valve configuration. Incorrect installation can void warranty and create safety hazards.

Q: Do I need a separate electrical circuit? A: No! The in.temp Mini is designed to power through your existing Gecko control system using the included 5-metre power cable. No additional electrical work is typically required (though it can optionally be powered by an external breaker if preferred).

Q: Will this work with my Gecko controller? A: The in.temp Mini is compatible with Gecko IN.YE, IN.YT, and IN.YJ series control systems that have RS-485 communication. If you have an older IN.YE-V3 controller, you may need the optional RS-485 daughterboard (Part #9920-201308). Check your controller model or consult with your dealer.

Q: Can I control this from my phone? A: Yes! When connected to a compatible Gecko controller with in.touch 2 module, you can control the heat pump, monitor temperature, change heating modes, and track energy savings directly from the in.touch 2 smartphone app.

Operation & Performance

Q: How long does it take to heat my spa? A: This varies based on spa volume, ambient temperature, and desired temperature rise. For a typical 1,500-litre spa on a mild day (24°C ambient), expect approximately 3 hours for a 5°C rise or 6 hours for a 10°C rise. In cooler conditions (15°C ambient), these times increase to about 4.5 and 9 hours respectively. Smart Heat mode can reduce heat-up times by engaging electric backup.

Q: What are the three heating modes? A:

• Eco Heat – Heat pump only, maximum efficiency and savings (no electric heater)
• Smart Heat – Primarily uses heat pump, but engages electric heater when temperature difference is large for faster heat-up
• Electric – Heat pump off, electric heater only (traditional heating)

Most users run in Eco Heat for daily operation and switch to Smart Heat when they want faster heating.

Q: What is the 3-minute restart delay? A: To protect the compressor, there’s an automatic 3-minute delay before the heat pump can restart after shutting down. This prevents damage from rapid cycling and is standard in all quality heat pump systems.

Maintenance & Troubleshooting

Q: How do I winterize the heat pump? A: For extended winter shutdown, you must fully drain the heat exchanger to prevent freeze damage. This involves closing bypass valves, disconnecting plumbing, removing the drain plug, and blowing out remaining water with compressed air. Detailed winterization steps are provided in the technical manual. Important: Many owners choose to leave their spa operational year-round instead of winterizing.

Q: What maintenance is required? A: The in.temp Mini is low-maintenance. Before each heating season, clear debris from air grilles and inspect the unit. During operation, occasionally check for blockages and ensure good airflow. The titanium heat exchanger is corrosion-resistant and works with all standard spa chemicals without special treatment.

Q: What if I see an error code? A: Error codes appear on your Gecko keypad when the self-diagnostic system detects an issue. Common codes include HP41 (water flow problem), HP99 (communication error), or HP65 (ambient temperature too low). Most issues are easily resolved – check the technical manual troubleshooting guide or contact your dealer for assistance.

Q: Is the heat exchanger compatible with salt water systems? A: Yes! The titanium heat exchanger is fully compatible with all water treatment methods including chlorine, bromine, iodine, and salt water systems. Titanium offers excellent corrosion resistance for long-lasting performance.

Cost & Value

Q: What’s the payback period for this heat pump? A: Based on typical energy savings of £100-150 per month during the heating season (March-November), most owners see payback within 2-3 years. After that, the savings continue for the life of the heat pump, making it an excellent long-term investment.

Q: Does this come with a warranty? A: Yes, the Gecko in.temp Mini includes a standard manufacturer’s warranty. Coverage details vary by region and retailer – contact Parts4Tubs for specific warranty information for your purchase.

Q: Are there any running costs besides electricity? A: The primary running cost is electricity, which is dramatically reduced compared to traditional heating. The R32 refrigerant should last the lifetime of the unit under normal conditions. Annual professional inspection is recommended but not mandatory. Replacement parts are readily available if needed.

📄 Downloads & Technical Documentation

Product Manuals & Resources

📄 IN.TEMP Mini Technical Manual (English) (opens in new tab) Complete 32-page installation, operation, and maintenance guide. Includes detailed specifications, wiring diagrams, installation instructions, troubleshooting guide, error codes, winterization procedures, and replacement parts list. Essential reading before installation.

🛒 Why Buy from Parts4Tubs?

✅ Authorized Gecko Dealer – Genuine products with full manufacturer support

✅ Expert Technical Support – Knowledgeable staff to assist with compatibility and installation

✅ Fast UK Shipping – Quick delivery throughout the United Kingdom

✅ Competitive Pricing – Best value for premium heating solutions

✅ Comprehensive Product Range – Complete selection of hot tub parts and accessories

📝 Final Summary

The Gecko in.temp Mini Heat Pump (3kW) represents the most affordable, fully-integrated heat pump solution for residential hot tub owners. With its compact design, whisper-quiet operation, and dramatic energy savings of up to 75%, it transforms spa ownership into an eco-friendly, cost-effective luxury.

Key advantages:

• Unmatched efficiency – COP of 4.41 means exceptional performance
• Seamless integration – Works perfectly with Gecko Y-series controllers
• Year-round reliability – Operates from 0°C to 43°C ambient temperature
• Ultra-compact – Fits into tight spaces with minimal visual impact
• Remarkably quiet – Just 51dBA won’t disturb your relaxation
• Eco-conscious – R32 refrigerant and renewable energy technology
• Simple installation – Plug-and-play through existing Gecko control
• Smart app control – Monitor and adjust via in.touch 2 mobile app

Whether you’re looking to reduce your energy bills, minimize your environmental impact, or simply enjoy comfortable spa temperatures throughout the spring, summer, and autumn seasons, the Gecko in.temp Mini delivers exceptional value and performance.

Perfect for: 2-4 person hot tubs, residential spas, homeowners seeking energy efficiency, eco-conscious spa owners, and anyone wanting quiet, reliable heating without the complexity of traditional heat pump installations.

Ready to transform your hot tub experience? Contact Parts4Tubs today for expert advice, pricing, and installation support for the Gecko in.temp Mini Heat Pump.