🔥 Vian Power C5 Plus Full DC Inverter Heat Pump (5kW) – Ultimate Hot Tub Heating Solution

Transform your hot tub experience with the Vian Power C5 Plus Heat Pump – the smartest, most efficient way to heat your spa all year round. This premium full DC inverter heat pump delivers exceptional performance from -10°C to +43°C, cutting your heating costs by up to 75% compared to traditional electric heaters while maintaining perfect water temperatures in any weather.

Unlike standard ON/OFF heat pumps, the C5 Plus features intelligent inverter technology that automatically adjusts power consumption based on ambient temperature and heating demand. This means you enjoy consistent warmth without wasting energy, with Coefficient of Performance (COP) ratings reaching an impressive 8.73 – producing 8.73 units of heat for every 1 unit of electricity consumed.

⚡ Key Benefits at a Glance:

• Save 60-75% on running costs vs. traditional hot tub heaters
• All-season operation works down to -10°C ambient temperature
• Whisper-quiet operation at just 32-45 dB – quieter than a refrigerator
• Compact design fits easily into any outdoor space (470×290×430mm)
• WiFi enabled control your hot tub temperature from anywhere via smartphone app
• Both heating AND cooling modes for year-round comfort
• No second power line required – connects directly to your Balboa or Gecko system

🌡️ Why Choose the Vian Power C5 Plus?

Smart Inverter Technology That Pays for Itself

Traditional hot tub heaters are like light switches – they’re either fully ON or fully OFF, wasting enormous amounts of electricity. The Vian C5 Plus is different. Its Full DC Inverter technology works like a smart thermostat, constantly adjusting power output between 2.1kW and 5.1kW to match exactly what your hot tub needs at that moment.

Real-World Example: On a mild 20°C spring evening, your hot tub only needs 2.5kW to maintain temperature. A traditional 3kW heater would cycle on and off wastefully, while the C5 Plus smoothly delivers exactly 2.5kW – saving you money every single hour it runs.

Built for British Weather (and Beyond)

With an operational range from -10°C to +43°C, this heat pump handles everything from harsh winter freezes to scorching summer days. The titanium heat exchanger resists corrosion, while the eco-friendly R32 refrigerant ensures reliable performance in all conditions.

Cooling Mode for Summer Comfort

Unique among hot tub heat pumps, the C5 Plus includes a built-in cooling function. When summer temperatures soar, switch to cooling mode for a refreshing dip rather than an uncomfortably hot soak. Perfect for those who want their spa to be comfortable year-round, not just in winter.

📄 Downloads & Documentation

Get the complete technical information and installation guides for your Vian Power C5 Plus:

📄 User Manual Vian Power HP-VP501 PDF (opens in new tab)
Complete 39-page installation and operation manual including safety instructions, wiring diagrams, controller operation, WiFi setup guide, troubleshooting codes, and maintenance schedules. Essential reading before installation.

💡 Need help with installation? Our technical team can provide guidance and connect you with qualified installers in your area.

🎯 Is the C5 Plus Right for Your Hot Tub?

Recommended Hot Tub Sizes

The Vian Power C5 Plus is ideally suited for:

✅ Small to Medium Hot Tubs: 1,000 – 1,500 litres (Standard 4-6 person spas)
✅ Medium to Large Hot Tubs: 1,500 – 2,000 litres (6-8 person spas)
✅ Maximum Water Volume: Up to 20,000 litres (20m³)

Not sure about your hot tub size? Most residential hot tubs hold between 1,200-1,800 litres. Check your owner’s manual or measure: Length (cm) × Width (cm) × Average Depth (cm) ÷ 1000 = Litres.

Heat-Up Time Estimates

Understanding how quickly your hot tub will heat helps you plan your soaks. Here are estimated heat-up times for the C5 Plus under typical UK conditions:

Heat-Up Time Calculator (Ambient Temperature: 15°C)

Heat-Up Time Calculator (Ambient Temperature: 5°C)

⚠️ Important Disclaimers:

• Estimates based on the C5 Plus operating at approximately 3.5-4kW average output in UK spring/autumn conditions
• Actual heat-up times vary significantly based on: ambient air temperature, wind conditions, hot tub cover quality, pipe insulation, starting water temperature, and whether circulation pumps are running
• Times assume a well-insulated hot tub with a quality cover in place during heating
• Colder ambient temperatures reduce heat pump efficiency and increase heat-up times
• For fastest heat-up, use in combination with your existing heater initially, then switch to heat pump-only for maintenance heating

💡 Pro Tip: The C5 Plus excels at maintaining temperature rather than rapid initial heating. Once your hot tub is at temperature, the heat pump keeps it there efficiently 24/7 at a fraction of the cost of electric heaters.

🔧 Complete Technical Specifications

Heating Performance Data

Understanding COP: A COP of 8.0 means the heat pump produces 8kW of heat while consuming only 1kW of electricity – that’s 700% efficiency compared to a traditional electric heater’s 100% efficiency!

Cooling Performance (Summer Mode)

General Specifications

Operating Parameters

Components & Build Quality

Physical Specifications

✨ Key Features & Benefits Explained

🎚️ Full DC Inverter Technology

What it means: Unlike basic ON/OFF heat pumps, the C5 Plus continuously adjusts its compressor speed between 50-100% power output to match your hot tub’s exact heating needs.

Why it matters: This delivers 30-40% better energy efficiency than standard heat pumps, quieter operation, more stable water temperatures, and longer equipment lifespan due to reduced thermal stress.

🏆 Titanium Heat Exchanger

What it means: The component that transfers heat between the refrigerant and your hot tub water is made from marine-grade titanium rather than cheaper copper or stainless steel.

Why it matters: Titanium is virtually indestructible against chlorine, bromine, salt water, and chemical corrosion. This heat exchanger will likely outlast your hot tub itself – no degradation, no leaks, no replacement needed.

🌍 R32 Eco-Friendly Refrigerant

What it means: R32 has a Global Warming Potential (GWP) of just 675 compared to older R410A refrigerant’s 2,088 GWP.

Why it matters: You’re using 68% less harmful refrigerant for the environment, meeting the latest environmental regulations, and benefiting from R32’s superior heat transfer properties (better efficiency).

📱 WiFi Smart Control

What it means: Download the free “Smart Life” app and control your heat pump from anywhere with an internet connection.

Why it matters:

• Check water temperature while you’re at work
• Start heating before you drive home
• Adjust settings without going outside in bad weather
• Monitor energy consumption and performance
• Receive alerts if issues occur

🔇 Ultra-Quiet Operation (32-45 dB)

What it means: At 32-45 decibels, the C5 Plus is quieter than:

• A refrigerator (40 dB)
• A quiet library (40 dB)
• Normal conversation (60 dB)
• A dishwasher (50-60 dB)

Why it matters: Enjoy your hot tub experience without annoying mechanical noise. Your neighbors won’t even know it’s running. Perfect for residential gardens and noise-sensitive areas.

❄️ Built-In Cooling Function

What it means: Reverse the heating cycle to actively cool your hot tub water during summer months.

Why it matters: When outdoor temperatures exceed 30°C, traditional hot tubs become uncomfortably hot (often reaching 35-38°C without heating even on). The C5 Plus can cool your water down to a refreshing 20-25°C for comfortable summer soaking.

🔌 Direct System Integration (No Second Power Line)

What it means: The heat pump can draw power directly from your existing hot tub control system via three connection methods:

1. Direct power from heater terminals (Balboa only)
2. AUX heater spade terminals (Balboa only)
3. Any 230V constant output (Balboa, Gecko, or separate supply)

Why it matters: Saves £200-500 on electrical installation costs compared to running a new dedicated power circuit. Your electrician can connect it to your existing hot tub wiring in under an hour.

🛡️ Comprehensive Protection Systems

Built-in safety features include:

• High/low pressure protection
• Flow switch fault detection
• Over/under voltage protection
• High exhaust temperature protection
• IPM module temperature monitoring
• Compressor overcurrent protection
• Automatic defrost system

Why it matters: These intelligent protections prevent damage to your heat pump and hot tub, ensuring years of trouble-free operation while protecting your investment.

💰 Running Cost Comparison: Heat Pump vs. Electric Heater

Understanding your savings:

Traditional hot tub heaters work like kettle elements – they convert electricity to heat at a 1:1 ratio (COP of 1.0). The Vian C5 Plus uses heat pump technology to extract free heat from the air, achieving COPs between 3.0 and 15.94 depending on weather.

Example: Maintaining a 1,500 Litre Hot Tub at 38°C

Scenario 1: Mild UK Evening (15°C ambient)

Scenario 2: Cold Winter Night (5°C ambient)

Scenario 3: Warm Summer Day (20°C ambient)

*Based on £0.27/kWh electricity rate (UK average as of 2024)
**Assumes heating runs approximately 8-12 hours per day to maintain temperature

Annual Savings Estimate

Average UK climate throughout the year:

💡 Real-World Insight: Even conservative estimates show £3,000-4,000 annual savings for typical hot tub users. The C5 Plus typically pays for itself within 6-18 months depending on your usage pattern and local electricity rates.

🏗️ Installation Requirements

What You’ll Need

Included with Heat Pump:

• 5m weatherproof power cable with RCD protection
• Drainage hose
• Installation manual
• Wire controller
• Mounting rubber feet
• Hose clamps (2)
• Connection adapters (2)

Not Included (Required Separately):

• Bypass valve kit for hot tub plumbing
• 32mm or 38mm PVC pipe and fittings
• Pipe insulation (essential for efficiency)
• PVC solvent cement
• Optional: Flexible PVC connectors to reduce vibration transmission

💡 Pro Tip: We recommend the Air Source Connection Kit which includes everything needed for a professional installation: bypass valve, correct pipe lengths, elbows, couplers, and all fittings.

Space Requirements

Minimum Clearances Required:

⚠️ Critical: Never install in enclosed spaces or under decking where air circulation is restricted. The heat pump needs constant fresh air supply to operate efficiently.

Ideal Installation Locations

✅ Best Locations:

• Adjacent to hot tub on level concrete pad or paving slabs
• Against an exterior wall with clear space in front
• In corner of garden with good drainage
• Protected from prevailing winds but not enclosed

❌ Avoid These Locations:

• Under gazebos, pergolas, or covered structures
• In conservatories or enclosed spaces
• Against bedroom windows (noise consideration)
• Areas prone to puddles or standing water
• Near air inlet vents of other equipment
• Within 1m of flammable materials

Electrical Requirements

Power Supply:

• 220-240V / 50Hz single phase
• Maximum draw: 1.5kW (6.9A)
• Must be protected by 30mA RCD (included with unit)
• Recommended: 16A Type D circuit breaker

Installation Options:

1. Direct connection to hot tub heater terminals (Balboa systems only)
2. Connect to AUX heater spade terminals (Balboa systems only)
3. Any dedicated 230V supply (works with all systems)

⚠️ Important: All electrical work must be completed by a qualified electrician in accordance with current UK wiring regulations (BS 7671). Incorrect installation may void warranty and create safety hazards.

Plumbing Requirements

Water Flow:

• Required flow rate: 2.5 m³/hour (41.6 litres per minute)
• Connection size: 32mm or 38mm (adapters included)
• Bypass valve mandatory – allows heat pump to be isolated for service
• All pipes must be insulated to prevent heat loss

Installation Notes:

• Heat pump should be plumbed AFTER your filter and BEFORE water returns to tub
• Install below hot tub water level when possible (reduces priming issues)
• Ensure all connections are leak-free before powering on
• Leave drain valve accessible for winterization

First-Time Startup Checklist

Before powering on your Vian C5 Plus:

✅ Unit is level and securely positioned
✅ All clearances meet minimum requirements
✅ Power supply correctly installed with RCD protection
✅ Water pipes connected and pressure tested
✅ Bypass valve installed and functioning
✅ All pipe insulation fitted
✅ Hot tub filled and filter system running
✅ No air locks in heat pump water circuit
✅ Drainage valve accessible and functioning
✅ User manual read and understood

❓ Frequently Asked Questions

How much does the C5 Plus cost to run?

Answer: At typical UK electricity rates (£0.27/kWh), the C5 Plus costs approximately £0.10-0.20 per hour to operate depending on ambient temperature, compared to £0.80 per hour for a 3kW electric heater. Most hot tub owners see their heating costs drop by 60-75%, saving £3,000-5,000 annually.

The running cost varies with weather: warmer days mean better efficiency and lower costs. In summer (20°C+), you might spend just £2-3 per day maintaining temperature, while cold winter conditions (0-5°C) might cost £4-6 per day – still far cheaper than electric heating.

How long does it take to heat my hot tub from cold?

Answer: Initial heat-up times range from 7-16 hours depending on your hot tub size, starting water temperature, and ambient conditions. A typical 1,500-litre hot tub takes approximately 11 hours to heat from 10°C to 38°C in average UK spring weather (15°C ambient).

However, here’s what most people don’t realize: Heat pumps excel at maintaining temperature, not rapid heating. Once your hot tub reaches target temperature, the C5 Plus keeps it there efficiently 24/7 at minimal cost. Many owners use their existing electric heater for initial heat-up, then switch to heat pump-only mode for maintenance – this gives you the best of both worlds.

Pro Strategy: Fill and heat your hot tub on a mild day (15°C+) using both heaters if available, then let the heat pump take over. You’ll never wait for heat-up again because your tub stays ready around the clock at a fraction of traditional costs.

Will the C5 Plus work in winter / cold weather?

Answer: Yes! The Vian C5 Plus operates reliably down to -10°C ambient temperature, making it suitable for year-round use throughout the UK. However, efficiency does decrease as temperatures drop.

Performance by season:

• Summer (20°C+): Excellent efficiency (COP 7-9), lowest running costs
• Spring/Autumn (10-15°C): Very good efficiency (COP 5-7), moderate costs
• Mild Winter (5-10°C): Good efficiency (COP 4-6), still economical
• Cold Winter (0-5°C): Functional efficiency (COP 4-5), savings still significant
• Severe Cold (-5 to -10°C): Reduced efficiency (COP 3-4), but still works

Even at -10°C when efficiency is lowest, the heat pump still produces 3-4 times more heat than electricity consumed – far better than traditional heaters’ 1:1 ratio. The automatic defrost system prevents ice buildup and maintains performance.

Is it noisy? Will it disturb my neighbors?

Answer: The C5 Plus is remarkably quiet at 32-45 dB – quieter than most refrigerators and barely noticeable from 5 meters away. At typical installation distances from neighboring properties, it’s essentially silent.

Noise level comparison:

• Vian C5 Plus: 32-45 dB (whisper to quiet conversation)
• Refrigerator: 40 dB
• Quiet library: 40 dB
• Dishwasher: 50-60 dB
• Normal conversation: 60 dB
• Hot tub jets running: 60-70 dB

Your hot tub jets make significantly more noise than this heat pump. The variable speed inverter also means the unit rarely runs at maximum speed, keeping noise even lower most of the time.

Installation tip: Position the fan outlet (front) away from bedrooms and outdoor seating areas if possible, though this is rarely necessary given the low noise output.

Do I need a plumber or electrician to install this?

Answer: Yes, professional installation is strongly recommended for several important reasons:

Electrical work requires:

• Qualified electrician (Part P registered in England/Wales)
• Proper RCD protection and circuit breaker sizing
• Compliance with BS 7671 wiring regulations
• Safe integration with existing hot tub electrical system

Plumbing work requires:

• Understanding of hot tub hydraulics and flow rates
• Proper bypass valve installation
• Leak-free pressure testing
• Correct pipe sizing and insulation

While experienced DIYers might tackle the plumbing with the right guidance and our installation packs, electrical work must be completed by a qualified electrician to maintain warranty compliance and ensure safety. Incorrect installation can damage equipment, void warranty, or create hazardous conditions.

Budget for installation: Expect £200-600 for professional installation depending on complexity and local rates. Many hot tub retailers and specialized technicians offer heat pump installation services.

Can I connect this to any hot tub brand or system?

Answer: Yes, the Vian C5 Plus is universally compatible with virtually all hot tub brands and control systems. It’s been successfully installed on:

• Balboa systems (direct integration options available)
• Gecko systems (using 230V constant output)
• Chinese pack systems
• American, European, and UK hot tub brands
• Older and newer hot tub models
• Both 13amp and 32amp hot tubs

Three connection methods available:

1. Direct heater terminal connection (Balboa only) – heat pump replaces traditional heater
2. AUX heater terminals (Balboa only) – runs as auxiliary heat source
3. Separate 230V supply (all systems) – independent power source

The heat pump operates independently of your hot tub’s control system, though it respects your spa’s flow switch for safety. This means it works whether you have the latest smart spa system or a 10-year-old controller.

What maintenance does the heat pump require?

Answer: The Vian C5 Plus is remarkably low-maintenance with just a few simple annual tasks:

Regular maintenance (15 minutes, 2-3 times per year):

• Clean exterior casing with damp cloth
• Vacuum or gently brush rear evaporator fins to remove dust/debris
• Check pipe connections for leaks
• Ensure drainage valve is clear

Annual professional service (recommended):

• Electrical safety checks
• Refrigerant pressure verification
• Component inspection
• Performance testing

Winterization (if closing hot tub for extended periods):

• Drain water from heat pump completely via drain valve
• Disconnect power supply
• Cover unit to protect from elements

The titanium heat exchanger requires no descaling or acid cleaning unlike cheaper copper exchangers. The sealed refrigerant system is maintenance-free for years. Most owners report zero issues with regular use over multiple seasons.

Warranty note: Keep records of any professional maintenance to support warranty claims if needed.

How long will the C5 Plus last?

Answer: With proper installation and minimal maintenance, expect 10-15 years of reliable service from the Vian C5 Plus. The premium components are engineered for longevity:

Component lifespans:

• Titanium heat exchanger: 20+ years (often outlasts the hot tub itself)
• GMCC rotary compressor: 10-15 years typical, 20+ years possible
• Electronic expansion valve: 10-15 years
• Fan motor: 10-12 years
• PCB controller: 8-12 years

Factors that extend lifespan:

• Regular cleaning of air intakes
• Proper electrical protection (RCD, surge protection)
• Avoiding rapid on/off cycling (the inverter helps with this)
• Professional installation with correct clearances
• Complete winterization if leaving unused in freezing conditions

Comparison: Traditional hot tub heaters typically last 3-7 years before element failure. The C5 Plus’s heat pump technology has far fewer wear components and the inverter reduces thermal stress, contributing to exceptional longevity.

Many commercial installations of similar heat pump technology have exceeded 15 years of continuous operation. This is a long-term investment that pays dividends for over a decade.

What warranty is included?

Answer: The Vian Power C5 Plus includes manufacturer warranty coverage (specific terms vary by retailer – please confirm with your supplier). Warranty typically covers:

• Manufacturing defects in materials and workmanship
• Compressor failure
• Electronic control board malfunctions
• Titanium heat exchanger leaks (extremely rare)

Important warranty conditions:

• ✅ Must be installed by qualified professionals
• ✅ Electrical work must meet local regulations
• ✅ Proper winterization if left unused in freezing conditions
• ✅ Normal maintenance performed as specified
• ❌ Not covered: Damage from incorrect installation, freezing damage, electrical surges, physical damage, or unauthorized modifications

Extended warranty options may be available through your retailer. Always register your heat pump with the manufacturer upon installation and retain proof of purchase and installation records.

Can I use this for a swimming pool instead of a hot tub?

Answer: The Vian C5 Plus is optimized for hot tubs and small pools up to 20,000 litres (20m³). It can technically heat small above-ground pools, but there are important considerations:

Suitable for:

• Small plunge pools (8-15m³)
• Exercise pools or swim spas (15-20m³)
• Small above-ground pools
• Hot tubs and spas (primary design purpose)

Not suitable for:

• Large in-ground swimming pools (30m³+)
• Commercial pools
• Pools requiring rapid temperature changes

Pool vs. Hot Tub differences:

• Pools require much longer heat-up times due to larger water volumes
• Pools have greater surface area and higher heat loss
• Pool temperatures are typically lower (25-28°C vs. 38-40°C for hot tubs)
• Pool covers are essential to retain heat economically

For small pools: The C5 Plus can maintain pleasant swimming temperatures during warmer months (April-September in UK), but may struggle in winter unless you have excellent pool insulation and cover. Consider the larger Vian S7 Plus (7kW) or S9 Plus (9kW) models for pools over 15m³.

What is COP and why does it matter?

Answer: COP stands for Coefficient of Performance – it’s the measure of how much heat energy a heat pump produces compared to the electrical energy it consumes.

Simple explanation:

• COP of 1.0 (traditional heater): Produces 1kW of heat for every 1kW of electricity used (100% efficiency)
• COP of 6.0 (heat pump): Produces 6kW of heat for every 1kW of electricity used (600% efficiency)

The Vian C5 Plus achieves COPs between 3.0 and 15.94 depending on ambient temperature, with typical real-world performance around COP 5-8 in UK conditions.

Why this matters to your wallet:

You’re paying 1/6th the cost to produce the same amount of heat. This is why heat pumps deliver such dramatic savings – they’re extracting free heat energy from the air rather than converting expensive electricity directly to heat.

Real-world example: Heating your hot tub for an evening costs £0.15 with the heat pump vs. £1.00 with a traditional heater – a difference of 85p every time you use it. Over a year, this compounds into thousands of pounds in savings.

Does it work with my Balboa / Gecko control system?

Answer: Yes, absolutely! The Vian C5 Plus is specifically designed to integrate with both Balboa and Gecko systems – the two most common hot tub control platforms worldwide.

Balboa Systems (BP, GS, VS, GL series):

• Option 1: Direct connection to heater terminals (heat pump becomes primary heater)
• Option 2: Connection to AUX heater spade terminals (works alongside existing heater)
• Both options allow the heat pump to respond to your spa’s thermostat and operate automatically

Gecko Systems (in.xe, in.ye, in.touch, in.mix, SSPA-MP, etc.):

• Connection method: 230V constant output from control box
• Heat pump runs independently but respects flow switch for safety
• Simple integration with all Gecko control generations

Other Systems (Chinese packs, older American systems, etc.):

• Works with any hot tub system via separate 230V supply
• Universal compatibility regardless of control board brand or age

How it works: The heat pump monitors your hot tub’s water temperature using its own sensors and cycles on/off to maintain your set temperature. It works in harmony with your spa’s circulation pump and respects safety interlocks like the flow switch.

Installation tip: Most installers prefer using the AUX terminals on Balboa systems or a separate 230V supply, as this preserves your existing heater as a backup option for rapid heat-up or extreme cold conditions.

🚚 What’s Included & Delivery

In the Box

When your Vian Power C5 Plus arrives, you’ll receive:

✅ Main Heat Pump Unit – Factory tested and sealed
✅ 5m Weatherproof Power Cable – With RCD protection plug
✅ LED Wire Controller – For temperature control and settings
✅ Drainage Hose – For winterization and maintenance
✅ Hose Clamps (2) – For secure pipe connections
✅ Pipe Adapters (2) – For 32mm and 38mm connections
✅ Rubber Mounting Feet – Pre-installed for vibration dampening
✅ Installation & Operation Manual – Comprehensive 39-page guide
✅ WiFi Setup Instructions – For smartphone app connectivity

What You’ll Need Separately

🔧 For Installation:

• Bypass valve kit (essential for isolation and service)
• PVC pipe (32mm or 38mm) and fittings
• Pipe insulation (critical for efficiency)
• PVC solvent cement
• Concrete pad or paving slabs for mounting (optional but recommended)

⚡ Electrical (if not using direct hot tub connection):

• Qualified electrician services
• Appropriate circuit breaker (if adding separate supply)

💡 Recommended: Our Air Source Connection Kit includes everything needed for professional-quality installation: bypass valve, correct pipe lengths, elbows, couplers, and all fittings in one convenient package.

Delivery Information

Standard Delivery: 3-5 working days to most UK mainland addresses
Shipping: Carefully packaged in original manufacturer packaging with protective corner blocks
Dimensions: Package size approximately 550mm × 350mm × 500mm
Weight: 25kg total including packaging

Please note: Courier will deliver to your door but not install. You’ll need to position the unit at your installation location. At just 23.5kg, most people can easily move the heat pump into place with one helper.

🎖️ Why Buy From Us?

✅ Authorized UK Supplier – Genuine Vian Power products with full manufacturer support
✅ Technical Expertise – Our team understands hot tub heating and can guide your installation
✅ Fast Dispatch – Order before 2pm for same-day dispatch (stock permitting)
✅ Installation Support – Connection guidance and installer recommendations available
✅ Quality Guarantee – Every unit tested before dispatch
✅ Spare Parts Available – Controllers, sensors, and components in stock if ever needed

🎯 Ready to Start Saving?

The Vian Power C5 Plus Heat Pump represents a game-changing upgrade for any hot tub owner serious about reducing running costs without compromising comfort. With typical savings of £3,000-5,000 annually, most customers see complete payback within 12-18 months – then enjoy years of affordable, eco-friendly hot tub heating.

Perfect for:

• Hot tub owners frustrated with high electricity bills
• Anyone looking to reduce their carbon footprint
• Those wanting year-round hot tub use without guilt
• Homes where heating costs have become prohibitive
• New hot tub buyers planning for long-term efficiency

Your investment includes:

• Premium inverter heat pump with 5kW output
• Titanium heat exchanger (20+ year lifespan)
• WiFi smart control via smartphone
• Whisper-quiet operation (32-45 dB)
• Heating AND cooling capability
• All connection accessories
• Comprehensive manual and support

⚡ Take control of your hot tub running costs today. Add the Vian Power C5 Plus to your basket and start enjoying affordable, year-round hot tub luxury.

📞 Need Help Deciding?

Questions about compatibility, installation, or sizing?
Our technical team is here to help you make the right choice for your specific hot tub setup.

Common pre-purchase questions we help with:

• Confirming compatibility with your specific hot tub model and control system
• Calculating realistic running costs based on your usage and location
• Recommending qualified installers in your area
• Explaining the difference between C5 Plus, S7 Plus, and S9 Plus models
• Advising on installation requirements and costs
• Discussing optimal placement for your garden layout

We want you to buy with confidence, so never hesitate to ask questions before purchasing.

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	2 inch Flapper Check Valve 1.25-2lbs. Spring 2-inch Flapper Check Valve: The Heart of Your Hot Tub’s Circulation As a dedicated hot tub enthusiast and spare parts supplier, I’m excited to introduce you to a crucial component that keeps your spa running smoothly: the 2-inch Flapper Check Valve with a 1.25-2lbs Spring. This small but mighty piece of equipment plays a vital [...]	£12.66 Max: 56 Min: 1 Step: 1 Add to cart
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	Air Source Connection Kit – Extra Large (1.5″) The Air Source Connection Kit from Buildahottub.com is everything you need to connect your new air source heat pump to your existing hot tub. The difference in the three sizes is the amount of Pipe that is supplied and also the number of elbows and couplers. This kit includes 1 x 1.5″ Air Source Bypass [...]	£385.00 Max: Min: 1 Step: 1 Add to cart
	Air Source Connection Kit – Extra Large (2″) The Air Source Connection Kit from Buildahottub.com is everything you need to connect your new air source heat pump to your existing hot tub. The difference in the three sizes is the amount of Pipe that is supplied and also the number of elbows and couplers. This kit includes 1 x 1.5″ Air Source Bypass [...]	£470.00 Max: Min: 1 Step: 1 Add to cart