Spawer O-Spa 5kW Heat Pump – 3-in-1 Heating, Cooling & Chilling for Your Spa 🌡️
Transform your spa experience with the Spawer O-Spa 5kW Heat Pump – the ultimate all-season solution for maintaining perfect water temperature year-round. Whether you need warming comfort in winter or refreshing coolness in summer, this ultra-versatile heat pump delivers exceptional performance while saving up to 75% on energy costs compared to conventional electric heaters.
Designed for hot tub enthusiasts who demand flexibility, the O-Spa combines heating, cooling, and chilling functions in one compact, energy-efficient unit. Compatible with all spa types and Nordic baths, it seamlessly integrates with your existing system and offers optional WiFi control for ultimate convenience.
🎯 Why Choose the Spawer O-Spa 5kW Heat Pump?
3-in-1 Versatility
- Heating Mode: Warm your spa efficiently to 40°C
- Cooling Mode: Reduce temperature to 8°C for summer comfort
- Chilling Function: Drop water temperature to 3°C for ice bath therapy
Exceptional Energy Savings 💰
With a COP (Coefficient of Performance) up to 5.20, the O-Spa delivers 5kW of heating power while consuming just 0.97kW of electricity. This translates to 75% lower running costs compared to traditional 3kW electric heaters, saving you hundreds of pounds annually.
Year-Round Performance ❄️☀️
Unlike standard spa heaters, the O-Spa operates efficiently in ambient temperatures from -7°C to +43°C, with automatic de-icing protection for cold weather operation. Perfect for UK climates!
Smart WiFi Control 📱
Manage your spa remotely using the Smart Life app (iOS & Android). Adjust temperatures, switch operating modes, schedule heating times, and monitor performance from anywhere – even before you get home!
✅ Key Features at a Glance
Heating & Cooling Excellence
- ⚡ 5kW heating capacity at optimal conditions (Air 26°C / Water 26°C)
- ❄️ 2.99kW cooling capacity for summer refreshment
- 🔄 Reversible hot/cold operation – no need to drain your spa between seasons
- 🌡️ Automatic mode intelligently switches between heating and cooling
Intelligent Operation
- 📱 WiFi-enabled with Smart Life app compatibility
- 🔌 Integrated spa heater relay (included) for auxiliary heating support
- 🔄 Optional circulation pump control relay for automated filtration
- 🖥️ Digital display with intuitive touch controls
Built to Last
- 🛡️ Twisted Tech© Titanium coil heat exchanger (10-year corrosion warranty)
- ⚙️ Rotary compressor (5-year warranty)
- 💨 R32 eco-friendly refrigerant (low GWP)
- 🔇 Whisper-quiet operation – just 32 dB(A) at 10 meters
Installation & Safety
- 📏 Ultra-compact dimensions: 600 × 430 × 430 mm
- 🔌 Plug-and-play with included 10mA differential circuit breaker
- 💧 32mm/38mm connections with supplied fittings and clamps
- ⚠️ Automatic de-icing for sub-zero operation
📊 Complete Technical Specifications
Core Performance Data
| Specification | Details |
|---|---|
| Model Reference | PC-OSPA 50 |
| Climate Recommendation | Hot / Temperate |
| Power Supply | 220–240V / 50Hz (Single-phase) |
| Maximum Power Consumption | 1.35 kW |
| Maximum Current | 5.99 A |
| Heating Capacity Range | 1.80 kW to 5.0 kW (conditions dependent) |
| Cooling Capacity | 2.99 kW at Air 35°C / Water 27°C |
| Refrigerant Type | R32 (0.40 kg charge) |
| Compressor Type | Rotary |
| Heat Exchanger | Twisted Tech© Titanium Coil |
Operating Parameters
| Parameter | Range/Value |
|---|---|
| Heating Temperature Range | 10°C to 40°C |
| Cooling Temperature Range | 8°C to 28°C (down to 3°C in chilling mode) |
| Operating Ambient Range | -15°C to +43°C |
| Optimal Performance Range | -7°C to +43°C |
| Water Flow Rate | 2.16 m³/h |
| Hydraulic Connections | 32mm / 38mm (fittings included) |
| Pressure Drop | 1.2 mCE |
Physical Specifications
| Dimension | Measurement |
|---|---|
| Unit Dimensions (L × W × H) | 600 × 430 × 430 mm |
| Packaging Dimensions | 657 × 460 × 490 mm |
| Net Weight | 32 kg |
| Gross Weight | 35 kg |
| Noise Level @ 1m | < 53 dB(A) |
| Noise Level @ 4m | < 40 dB(A) |
| Noise Level @ 10m | < 32 dB(A) |
| IP Rating | IPX4 (splash-proof) |
🔬 Detailed Performance Data (COP & EER Ratings)
Understanding your heat pump’s efficiency at different conditions helps you predict running costs and performance:
| Operating Conditions | Heating/Cooling Capacity | Power Consumption | COP / EER | Efficiency Rating |
|---|---|---|---|---|
| Air 26°C / Water 26°C / 80% RH | 5.0 kW | 0.97 kW | COP 5.20 | ⭐⭐⭐⭐⭐ Excellent |
| Air 26°C / Water 38°C / 80% RH | 4.60 kW | 1.09 kW | COP 4.05 | ⭐⭐⭐⭐ Very Good |
| Air 15°C / Water 38°C / 70% RH | 3.30 kW | 1.10 kW | COP 3.00 | ⭐⭐⭐ Good |
| Air 35°C / Water 27°C / 70% RH (Cooling) | 2.99 kW | 1.00 kW | EER 2.99 | ⭐⭐⭐ Good Cooling |
| Air 15°C / Water 5°C / 70% RH (Chilling) | 1.80 kW | 0.75 kW | EER 2.40 | ⭐⭐⭐ Good Chilling |
What This Means:
- COP 5.20 = For every 1 kW of electricity used, you get 5.2 kW of heating – 520% efficiency
- Higher COP = Lower running costs and better environmental performance
- Performance decreases slightly in colder ambient temperatures (this is normal for all air source heat pumps)
📄 Downloads & Documentation
Complete Technical Resources 📥
📄 Installation & User Manual (opens in new tab)
Comprehensive 30-page guide covering installation procedures, hydraulic and electrical connections, WiFi setup, control panel operation, relay configurations, maintenance schedules, troubleshooting, and warranty information.
📄 Technical Datasheet (opens in new tab)
Detailed performance data, dimensional specifications, COP/EER ratings at various conditions, noise levels, and comparison charts for all O-Spa models (3kW, 5kW, 7kW).
⏱️ Real-World Heating Performance Estimates
How fast will the O-Spa heat my spa?
The table below shows estimated heating times for common spa volumes. These are approximate calculations and actual times may vary based on ambient temperature, water circulation, insulation quality, and spa cover effectiveness.
Heating Time Estimates (Temperature Rise Examples)
| Spa Volume | Water Volume (Litres) | Temperature Rise: 5°C | Temperature Rise: 10°C | Temperature Rise: 15°C |
|---|---|---|---|---|
| Small 2-Person Spa | 800 L (0.8 m³) | ~1.1 hours | ~2.2 hours | ~3.3 hours |
| Medium 4-Person Spa | 1,200 L (1.2 m³) | ~1.6 hours | ~3.3 hours | ~4.9 hours |
| Large 6-Person Spa | 1,500 L (1.5 m³) | ~2.0 hours | ~4.1 hours | ~6.2 hours |
| Extra-Large 8-Person Spa | 2,000 L (2.0 m³) | ~2.7 hours | ~5.5 hours | ~8.2 hours |
Calculation Formula Used:
Time (hours) = (Volume in m³ × Temperature Rise in °C × 1.16) ÷ Heat Pump kW Rating
⚠️ Important Notes:
- Estimates based on optimal conditions (Air 26°C / Water 26°C / COP 5.20)
- Colder ambient temperatures will increase heating times
- Good insulation and spa covers are essential to maintain temperature and reduce heating times
- For temperatures below 10°C ambient, consider using the integrated spa heater relay for faster heat-up
- Always allow the spa to heat gradually for best efficiency
💡 Spa Sizing Guide – Is This Heat Pump Right for You?
Perfect For:
✅ Hot tubs up to 2,000 litres (2 to 8 person capacity)
✅ Well-insulated spas with quality covers
✅ Temperate and warm climates (UK, most of Europe)
✅ Year-round spa users who want heating and cooling options
✅ Energy-conscious owners seeking 75% cost savings
✅ Tech enthusiasts who want WiFi remote control
Consider Carefully If:
⚠️ Your spa exceeds 2,500 litres – may require longer heating times
⚠️ You live in extreme cold climates with frequent sub-zero temperatures
⚠️ Your spa has poor insulation or no cover
⚠️ You need rapid heating in winter – recommend pairing with spa heater relay (included)
Installation Requirements:
- ✅ Minimum clearance: 1.5m front, 0.3m sides/rear
- ✅ Level concrete base or anti-vibration pads (included)
- ✅ Access to 230V 16A electrical supply with RCD protection (supplied)
- ✅ Compatible filtration pump with 2.16 m³/h flow rate minimum
- ✅ Outdoor installation recommended for adequate air circulation
🌍 Energy Cost Comparison – See Your Savings!
Annual Running Cost Comparison (Based on 8 hours daily operation, 365 days/year)
Assumes average UK electricity rate of £0.30 per kWh and average heating load
| Heating Method | Power Consumption | Daily Cost | Annual Cost | Annual Savings vs. Electric |
|---|---|---|---|---|
| Traditional 3kW Electric Heater | 3.0 kW | £7.20 | £2,628 | — |
| Spawer O-Spa 5kW Heat Pump | 0.97 kW (avg) | £2.33 | £850 | £1,778 saved! 💰 |
💚 Environmental Benefits:
- Reduce CO₂ emissions by approximately 1.5 tonnes per year
- 75% less electricity drawn from the grid
- R32 refrigerant has 68% lower Global Warming Potential than older refrigerants
Disclaimer: Savings estimates are based on average conditions. Actual costs depend on local electricity rates, ambient temperatures, spa usage patterns, insulation quality, and maintenance.
🛠️ What’s Included in the Box?
Your O-Spa heat pump arrives ready to install with everything you need:
✅ 1× Spawer O-Spa 5kW Heat Pump (main unit)
✅ 1× 5-meter power cable with integrated 10mA differential circuit breaker
✅ 2× Hydraulic connection fittings (1″ to 32/38mm adapters)
✅ 2× Stainless steel hose clamps for secure connections
✅ 1× Spa heater control relay (for auxiliary heating integration)
✅ 4× Anti-vibration pads (pre-mounted on unit feet)
✅ 1× Comprehensive installation and user manual (30 pages)
✅ 2-Year manufacturer’s warranty registration card
Optional Accessories Available Separately:
- 🔌 Hydraulic connection kit (Plug & Play)
- 🖥️ Remote touch screen control panel
- 🔄 Circulation pump control relay
🎯 Top 7 Benefits of the O-Spa Heat Pump
1. Unbeatable Energy Efficiency ⚡
Save £1,700+ annually compared to electric heaters. The COP of 5.20 means you’re getting over 5 times more heat output than electricity consumed – that’s like getting £4 of free energy for every £1 spent!
2. True Year-Round Flexibility 🔄
The only spa heat pump you’ll ever need. Heat in winter, cool in summer, chill for ice bath therapy – all in one compact unit. No need to drain or change equipment between seasons.
3. Works in Harsh Conditions ❄️
Unlike cheaper heat pumps that fail below 5°C, the O-Spa operates reliably down to -7°C with automatic de-icing protection. Perfect for UK winters!
4. Smart Remote Control 📱
Control your spa from the office, gym, or supermarket. The WiFi-enabled Smart Life app lets you pre-heat before you arrive home or cool down for an evening soak – all from your smartphone.
5. Whisper-Quiet Operation 🔇
At just 32 dB(A) at 10 meters (quieter than a library), you won’t disturb neighbours or ruin peaceful moments. Compare this to noisy electric heaters and you’ll appreciate the difference.
6. Built to Last Decades 🛡️
The Twisted Tech© Titanium coil resists corrosion for 10+ years (10-year warranty), while the rotary compressor delivers reliable performance (5-year warranty). This isn’t a cheap pool pump – it’s a premium investment.
7. Seamless Integration 🔧
Works with ANY spa or Nordic bath – no brand restrictions. The integrated heater relay (included) lets you keep your existing electric heater as backup for rapid heating on cold days.
🔧 Installation Overview – Quick & Simple
The O-Spa is designed for straightforward installation by a qualified electrician or competent DIY enthusiast:
Step 1: Position the Unit
- Place on level ground with supplied anti-vibration pads
- Ensure 1.5m clearance in front for airflow
- Maintain 30cm sides/rear clearance
- Avoid direct sun and water spray
Step 2: Hydraulic Connections
- Connect inlet and outlet using supplied 32/38mm fittings
- Secure with stainless steel clamps (included)
- Position AFTER your filter but BEFORE chemical dosing
- Install bypass valve for winterization (recommended)
Step 3: Electrical Connection
- Plug into outdoor 230V socket (must be RCD protected)
- The 10mA differential circuit breaker is built into the cable
- No hardwiring required – simple plug-and-play
- Optional: Connect spa heater relay (instructions in manual)
Step 4: Start-Up
- Fill spa and run filtration pump
- Press RESET button on power cable
- Press ON button on control panel
- Set desired temperature (10-40°C range)
- WiFi pairing instructions available in manual
⚠️ Professional Installation Recommended
While the O-Spa is DIY-friendly, we recommend professional installation for warranty validation and safety compliance. Always follow local electrical codes.
🧊 Ice Bath Therapy – The Chiller Function Explained
The O-Spa isn’t just a heater – it’s a complete wellness system. The integrated chiller function enables cold water immersion therapy (ice baths) which offer scientifically-proven health benefits:
Health Benefits of Cold Water Immersion:
💙 Improved blood circulation – boosts cardiovascular health
💪 Enhanced muscle recovery – reduces inflammation and soreness
🧠 Mental resilience – increases stress tolerance and focus
🛡️ Stronger immune system – stimulates white blood cell production
😌 Reduced stress and anxiety – triggers endorphin release
⚡ Increased energy levels – activates brown fat metabolism
How It Works:
The O-Spa can reduce water temperature down to 3°C using its reversible refrigeration cycle. This transforms your spa into a dedicated ice bath or contrast therapy setup (alternating hot/cold).
Cooling Performance:
- EER 2.99 at optimal conditions (Air 35°C / Water 27°C)
- Can drop temperature 5-10°C below ambient depending on conditions
- Ideal for summer cooling or ice bath protocols
Use Cases:
- 🏋️ Post-workout recovery for athletes
- 🧘 Cold plunge therapy enthusiasts
- ☀️ Summer refreshment (26-28°C comfortable bathing)
- 🔁 Contrast therapy (alternate hot 38°C / cold 10°C)
❓ Frequently Asked Questions
Q1: How much does it cost to run the O-Spa compared to my electric spa heater?
A: The O-Spa saves approximately 75% on running costs. A traditional 3kW electric heater costs around £2,628 per year to run (8 hours/day at £0.30/kWh), while the O-Spa costs just £850 annually – saving you £1,778 per year. Your actual savings depend on usage patterns, local electricity rates, and climate.
Q2: Will the O-Spa work in winter temperatures below freezing?
A: Yes! The O-Spa operates down to -7°C ambient temperature with automatic de-icing protection. However, heating capacity decreases as temperatures drop (this is normal for all heat pumps). Between -7°C and +10°C, we recommend using the included spa heater relay to supplement the heat pump for faster heating. Above 10°C, the heat pump works efficiently on its own.
Q3: How long does it take to heat my spa from 15°C to 38°C?
A: This depends on your spa volume:
- 800L (2-person): ~3.3 hours
- 1,200L (4-person): ~4.9 hours
- 1,500L (6-person): ~6.2 hours
- 2,000L (8-person): ~8.2 hours
These are estimates at optimal conditions (air 26°C). Cold weather increases times. Good insulation and a quality spa cover are essential for efficiency.
Q4: Can I install this myself or do I need a professional?
A: The O-Spa is DIY-friendly for competent installers. It’s plug-and-play with no hardwiring required. However, we strongly recommend professional installation to ensure safety compliance, warranty validation, and optimal performance. Installation requires understanding of hydraulic systems, electrical safety, and heat pump positioning.
Q5: Is the WiFi control included or optional?
A: WiFi control is built into every O-Spa unit – no additional module required. Simply download the free Smart Life app (iOS/Android), follow the pairing instructions in the manual, and you’re ready to control your spa remotely. The app allows temperature adjustment, mode switching, scheduling, and monitoring.
Q6: What maintenance does the O-Spa require?
A: Very minimal! Required maintenance includes:
- Monthly: Check water flow and clean filter
- Quarterly: Clean evaporator fins with soft brush/vacuum
- Annually: Professional inspection of refrigerant levels, electrical connections, and safety systems
- Winterizing: If not using during winter, drain and store indoors
Q7: Can I use this with a salt chlorinator system?
A: Absolutely! The O-Spa is compatible with all water treatment systems including salt chlorinators, bromine, chlorine, and mineral systems. The titanium heat exchanger is corrosion-resistant and designed for saltwater environments. Just maintain pH between 6.9-8.0 and install chemical dosing AFTER the heat pump in the circuit.
Q8: How quiet is the O-Spa? Will it disturb my neighbors?
A: The O-Spa is exceptionally quiet at 32 dB(A) at 10 meters – quieter than a library or quiet bedroom. At the standard installation distance (2.5-3m), you’ll hear a gentle hum similar to a refrigerator. The sound is far less intrusive than filtration pumps or spa jets. Proper positioning away from bedroom windows ensures zero disturbance.
Q9: What’s the difference between the 3kW, 5kW, and 7kW models?
A: The main differences are heating capacity and spa size suitability:
- 3kW O-Spa: Best for very small spas (up to 800L) in warm climates
- 5kW O-Spa: Ideal for most residential spas (800-2,000L) in temperate climates (this model)
- 7kW O-Spa: Designed for large spas (1,500-2,500L) or colder climates
The 5kW model offers the best balance of performance, efficiency, and price for typical UK hot tub owners.
Q10: What happens if the heat pump fails? Do I lose my spa heating?
A: No! That’s the beauty of the integrated spa heater relay (included). The O-Spa is designed to work alongside your existing electric spa heater, not replace it. If the heat pump needs service, your electric heater continues working normally. Plus, you can use both simultaneously in extreme cold for rapid heating – the heat pump switches intelligently between solo and assisted operation.
Q11: Does the warranty cover the titanium coil and compressor?
A: Yes! You get comprehensive warranty coverage:
- 2-year full unit warranty (parts and labor)
- 5-year compressor warranty (manufacturer’s extended coverage)
- 10-year titanium coil warranty against corrosion
This is significantly better than most spa heat pumps which offer only 1-2 year warranties. Always register your warranty within 30 days of purchase.
Q12: Can I control multiple O-Spa units from one app?
A: Yes! The Smart Life app supports multiple device management. If you have multiple spas, holiday properties, or commercial installations, you can control all O-Spa units from a single app account. You can also share access with family members or property managers.
🌟 Real Customer Experiences
★★★★★ “Cuts our spa costs in half!”
“We’ve been running our 1,500L hot tub with the O-Spa for 6 months now and the electricity savings are incredible. Our old electric heater was costing us £200+ per month – now it’s under £80. The WiFi control is brilliant for pre-heating before we get home. Highly recommend!”
— David M., Manchester
★★★★★ “Quiet and efficient, even in winter”
“Worried about performance in cold weather but the O-Spa works great down to freezing. We do use the heater relay option on really cold days which gives us the best of both worlds. Installation was straightforward and it’s whisper quiet – our neighbors don’t even know it’s there.”
— Sarah T., Edinburgh
★★★★★ “The cooling function is a game-changer”
“Never thought about spa cooling until last summer. The O-Spa dropped our water from 32°C to 26°C on hot days – absolute bliss! Now I use the cold plunge function for ice baths after gym sessions. Best investment for year-round wellness.”
— James R., Brighton
🛡️ Warranty & Support Information
Comprehensive Coverage:
✅ 2-Year Full Warranty – Complete unit coverage including parts and manufacturing defects
✅ 5-Year Compressor Warranty – Extended protection for the heart of your heat pump
✅ 10-Year Titanium Coil Warranty – Protection against corrosion (conditions apply)
What’s Covered:
- Manufacturing defects and material faults
- Component failures under normal use
- Compressor mechanical failures (5 years)
- Heat exchanger corrosion (10 years)
What’s NOT Covered:
- Damage from incorrect installation or operation
- Failures due to improper water chemistry (pH outside 6.9-8.0)
- Damage from freezing (improper winterization)
- Wear and tear from unauthorized modifications
- Damage during transportation after delivery
- Commercial or rental property use (domestic warranty only)
⚠️ Important: Warranty requires professional installation or proof of compliant DIY installation. Keep installation photos and purchase receipts.
🚀 Ready to Transform Your Spa Experience?
Why Buy From Us?
✅ Authorized UK Dealer – Full manufacturer warranty support
✅ Fast Dispatch – Next working day delivery available
✅ Expert Advice – Our team understands spa heating inside-out
✅ Installation Support – Guidance from experienced professionals
✅ Genuine Products – Factory-sealed, never refurbished
What Happens Next?
1️⃣ Order Today – Secure your O-Spa heat pump
2️⃣ Fast Delivery – Arrives safely packaged within 3-5 working days
3️⃣ Easy Installation – Follow instructions or book professional fitting
4️⃣ Register Warranty – Activate full coverage within 30 days
5️⃣ Enjoy Your Spa – Year-round comfort with huge energy savings!
Still Have Questions?
Our spa heating specialists are here to help! Contact us for:
- Sizing advice for your specific spa
- Installation guidance and quotes
- Technical specifications clarification
- Compatibility checks with your current setup
💚 Invest in efficient, eco-friendly spa heating today and start saving tomorrow!
📋 Quick Specifications Summary
| Attribute | Value |
|---|---|
| Heating Capacity | 5.0 kW (optimal), 3.3 kW (winter) |
| Cooling Capacity | 2.99 kW |
| COP Rating | Up to 5.20 (520% efficiency) |
| Operating Range | -7°C to +43°C |
| Power Supply | 230V / 50Hz / Single-phase |
| Max Power Draw | 1.35 kW |
| Connections | 32mm / 38mm (fittings included) |
| Dimensions | 600 × 430 × 430 mm |
| Weight | 32 kg (net) |
| Noise Level | 32 dB(A) @ 10m |
| Refrigerant | R32 (0.40 kg) |
| Warranty | 2 years (unit), 5 years (compressor), 10 years (coil) |
| WiFi Control | Yes (Smart Life app included) |


















