🔥 Inverter+ 35.8kW 3 Phase Commercial Pool Heat Pump – IPHR100T

Transform your commercial pool heating with the industry-leading Inverter+ 35.8kW heat pump. This powerhouse combines exceptional heating capacity with advanced Full-Inverter technology to deliver up to 50% energy savings compared to conventional systems. Designed specifically for large commercial pools, aquatic centers, hotels, and leisure facilities, the IPHR100T offers professional-grade performance with impressively quiet operation and comprehensive smart connectivity.

Key Benefits at a Glance:

🌡️ Powerful Performance – 35.8kW heating capacity handles large commercial water volumes with ease

💰 Exceptional Efficiency – COP ratings up to 16.5 mean outstanding energy savings on running costs

🔇 Remarkably Quiet – Advanced twin-rotary DC compressors deliver approximately 10× quieter operation than standard units

📱 Smart WiFi Control – Monitor, schedule, and manage your pool heating from anywhere via intuitive smartphone app

🛡️ Commercial-Grade Build – Titanium heat exchanger, weatherproof housing, and robust components ensure long-term reliability

🌍 Eco-Friendly – Uses environmentally friendly R32 refrigerant with reduced carbon footprint

Why Choose the Inverter+ 35.8kW Commercial Heat Pump?

Revolutionary Full-Inverter Technology

Unlike conventional on/off heat pumps, the Inverter+ 35.8kW features sophisticated Full-Inverter technology with twin-rotary DC compressors that revolutionizes commercial pool heating economics. The system intelligently delivers 100% power initially for rapid heating of large water volumes, then automatically modulates to approximately 50% power for efficient maintenance heating. This adaptive approach substantially reduces operating costs while minimizing operational vibrations for surprisingly quiet performance.

The soft-start functionality prevents electrical load spikes, making it kinder to your electrical infrastructure. The system continuously optimizes output based on real-time thermal requirements, ensuring you never waste energy while maintaining perfect water temperatures.

Impressive Energy Efficiency That Saves Money

Energy costs can make or break commercial pool operations. The IPHR100T achieves remarkable efficiency ratings with a COP (Coefficient of Performance) of up to 16.5 under optimal conditions. Even under more challenging conditions (air 15°C, water 26°C), the system maintains excellent COP ratings between 4.7 and 8.0.

What does this mean for your facility? For every 1kW of electricity consumed, the heat pump generates up to 16.5kW of heating power under ideal conditions. The sophisticated variable-speed operation ensures optimal energy utilization under all weather conditions, delivering significant operating cost savings throughout the swimming season.

Quieter Than You’d Ever Expect

Despite its powerful 35.8kW capacity, the IPHR100T delivers surprisingly quiet operation. The advanced twin-rotary DC compressors reduce vibrations to minimal levels, achieving sound pressure levels of just 42.6-54.7 dB(A) at 1 meter distance. At 10 meters, noise drops to an impressively low 22.6-34.7 dB(A).

Put this in perspective: During maintenance heating phases when operating at reduced speeds, the unit is approximately 10 times quieter than conventional heat pumps of comparable output. Your guests and neighbors will barely notice it’s running.

Complete Technical Specifications

Performance Data (Air 28°C, Water 26°C, Humidity 80%)

Specification	Value
Model	Inverter+ 35.8kW 3 Phase – IPHR100T
Heating Capacity	37.9 kW
COP Range	16.5 to 6.1
COP at 50% Capacity	11.6

Performance Data (Air 15°C, Water 26°C, Humidity 70%)

Specification	Value
Heating Capacity	24.5 kW
COP Range	8.0 to 4.7
COP at 50% Capacity	7.0
Rated Input Power	0.61 to 5.2 kW
Rated Input Current	0.88 to 7.4 A

Electrical & Physical Specifications

Specification	Value
Power Supply	400V / 3 Phase / 50Hz
Operating Air Temperature Range	-10°C to +43°C
Temperature Setting Range (Heating)	18°C to 40°C
Recommended Water Flow Rate	12 to 18 m³/hour
Compressor Type	Twin-Rotary Mitsubishi DC Inverter
Heat Exchanger	Spiral Titanium Tube in PVC Housing
Refrigerant	R32 (500g)
Refrigerant GWP	675
CO₂ Equivalent	1.823 tonnes

Noise Levels

Measurement Point	Sound Pressure
At 1 Meter Distance	42.6 to 54.7 dB(A)
At 10 Meters Distance	22.6 to 34.7 dB(A)

Physical Dimensions & Weight

Specification	Value
Dimensions (L × W × H)	1154mm × 539mm × 948mm
Net Weight	120 kg
Casing Material	Aluminum Alloy (Weatherproof)
Water Pipe Connection Size	50mm

Suitability

Application	Pool Volume
Recommended Pool Volume	90 to 160 m³
Ideal Applications	Commercial pools, aquatic centers, hotels, leisure facilities, large residential pools

🏊 Pool Sizing & Heat-Up Time Calculator

Selecting the right capacity heat pump is crucial for efficiency and satisfaction. The IPHR100T is specifically designed for larger commercial pools with volumes between 90 and 160 cubic meters.

Recommended Pool Volumes by Application

Pool Type	Volume Range	Application
Large Commercial Pool	90-120 m³	Health clubs, hotels, small leisure centers
Medium Commercial Pool	120-140 m³	Municipal pools, medium aquatic facilities
Large Commercial/Competition Pool	140-160 m³	Large leisure centers, training facilities

Estimated Heat-Up Times for Various Pool Sizes

The table below shows estimated times to heat different pool volumes with the IPHR100T. These are calculations based on the heat pump’s 24.5 kW rating at moderate conditions (air 15°C) and the standard heating formula.

⚠️ Important Disclaimers:

• Heat-up times are estimates only and will vary based on ambient temperature, humidity, wind, pool insulation, and cover usage
• Calculations assume moderate weather conditions (air temp 15°C)
• Using a pool cover when not in use can reduce heat-up time by 30-50%
• Running the filtration system 15+ hours daily optimizes heating efficiency
• Warmer air temperatures will reduce heat-up times; colder temperatures will increase them

Pool Volume	Temperature Rise	Estimated Heat-Up Time
90 m³	5°C (e.g., 20°C → 25°C)	21.4 hours
90 m³	10°C (e.g., 15°C → 25°C)	42.8 hours
100 m³	5°C (e.g., 20°C → 25°C)	23.7 hours
100 m³	10°C (e.g., 15°C → 25°C)	47.3 hours
120 m³	5°C (e.g., 20°C → 25°C)	28.4 hours
120 m³	10°C (e.g., 15°C → 25°C)	56.8 hours
140 m³	5°C (e.g., 20°C → 25°C)	33.1 hours
140 m³	8°C (e.g., 18°C → 26°C)	53.1 hours
160 m³	5°C (e.g., 20°C → 25°C)	37.9 hours
160 m³	8°C (e.g., 18°C → 26°C)	60.6 hours

Calculation Formula Used:
Time (hours) = (Pool Volume in m³ × Temperature Rise in °C × 1.16) ÷ Heat Pump kW Rating

💡 Pro Tips for Faster Heating:

• Always use a quality pool cover when the pool is not in use
• Run the heat pump during warmer daytime hours for maximum efficiency
• Ensure proper water circulation with adequate pump flow rate (12-18 m³/hour)
• Use the Smart mode for initial heat-up, then switch to Silence mode overnight
• Schedule heating during off-peak electricity hours to maximize cost savings

⭐ 7 Standout Features That Make This Heat Pump Exceptional

1. 📱 Comprehensive Smart WiFi Connectivity

The integrated WiFi module transforms pool management. Through the intuitive smartphone app (available for iOS and Android), you gain complete remote control capabilities:

✅ Monitor and adjust pool temperature from anywhere in the world
✅ Create customized heating schedules optimized for facility usage patterns
✅ Track detailed energy consumption and performance metrics in real-time
✅ Receive proactive maintenance alerts and system notifications
✅ Share device control with staff members and facility managers
✅ Access historical data to optimize heating efficiency

2. 🎯 Dual Operating Modes: Smart & Silence

Smart Mode (Default) – Delivers 20% to 100% heating capacity with intelligent optimization for the fastest heating. Ideal for initial heat-up or during peak usage times.

Silence Mode – Operates at 20% to 80% capacity with sound levels 3dB(A) lower than Smart mode. Perfect for overnight operation or noise-sensitive environments. The system automatically adjusts to maintain temperature while minimizing disturbance.

3. 🛡️ Commercial-Grade Titanium Heat Exchanger

The spiral titanium tube heat exchanger provides superior resistance to corrosion from pool chemicals, salt water, and harsh environments. Titanium offers exceptional longevity compared to standard materials, ensuring years of reliable operation even in demanding commercial applications. The PVC housing provides additional protection and thermal efficiency.

4. 🔄 Intelligent Adaptive System

The sophisticated control system continuously analyzes multiple parameters including water temperature, ambient conditions, thermal dynamics, and system performance. This intelligent adaptation ensures precise temperature maintenance while minimizing energy consumption across all operating conditions. The system learns your pool’s characteristics and optimizes heating cycles accordingly.

5. ❄️ Advanced Defrost Technology

Operating efficiently down to -10°C air temperature, the IPHR100T features both automatic and manual defrost capabilities. The intelligent auto-defrost function activates when needed to maintain efficiency in cold weather. Manual defrost mode is also available for specific situations (accessible after 30-minute intervals when compressor has run for 10+ minutes).

6. ⚡ Soft-Start Technology & Power Protection

The integrated soft-start functionality prevents electrical load spikes during startup, protecting your facility’s electrical infrastructure. Combined with the 3-minute compressor delay and 30-second fan start sequence, the system ensures smooth, reliable operation without tripping breakers or causing voltage fluctuations.

7. 🌍 Environmentally Responsible R32 Refrigerant

R32 refrigerant offers significantly lower Global Warming Potential (GWP of 675) compared to older refrigerants, reducing your facility’s environmental impact. It also provides better energy efficiency and heat transfer properties, contributing to the system’s exceptional performance ratings.

💰 Operating Cost Comparison vs. Alternative Heating Methods

Understanding the long-term economics of pool heating is essential for commercial facilities. The Inverter+ 35.8kW delivers exceptional value through superior efficiency.

Annual Running Cost Estimates (Based on 140 m³ Pool)

Assumptions: Pool maintained at 28°C for 6 months (April-September), 8 hours daily operation, covered when not in use

Heating Method	Estimated Annual Cost	vs. IPHR100T
Inverter+ IPHR100T Heat Pump	£1,800 – £2,400	Baseline
Standard On/Off Heat Pump	£3,200 – £4,000	+78% more expensive
Natural Gas Boiler	£4,500 – £5,500	+150% more expensive
LPG Boiler	£6,500 – £8,000	+280% more expensive
Electric Resistance Heater	£12,000 – £15,000	+600% more expensive

⚠️ Important Notes:

• Costs are estimates based on average UK energy prices as of 2025
• Actual costs vary with energy prices, ambient temperature, pool usage, and cover use
• The Inverter+ technology can reduce costs by up to 50% vs. standard heat pumps
• Regular maintenance optimizes efficiency and minimizes running costs

🎯 Payback Period: Most facilities recover the investment premium over standard heating within 2-3 years through energy savings alone.

🔧 Installation Requirements & Placement Guidelines

Electrical Requirements

⚡ Critical: This unit requires a 400V 3-phase electrical supply. Three-phase power is standard in commercial facilities but generally not available in residential properties.

Requirement	Specification
Power Supply	400V / 3 Phase / 50Hz
Breaker Rating	12A (3-phase)
Residual Current Device (RCD)	30mA leakage protection
Fuse Rating	12A
Power Cable	5 × 2.5mm² (for runs ≤10m)
Signal Cable	3 × 0.5mm² (extendable to 50m)

Professional Installation Required: Due to the commercial capacity and three-phase power requirements, this system must be installed by qualified electrical and HVAC technicians. Improper installation voids warranty and creates safety hazards.

Physical Installation Requirements

Minimum Clearance Distances:

Location	Minimum Distance
Front (Air Intake)	500mm clear space
Back (Air Outlet)	800mm clear space
Sides	300mm each side
Top	1500mm clear space above
Distance from Pool	≤10m recommended for optimal efficiency

Foundation & Mounting

✅ Must be mounted on solid concrete foundation or heavy-duty anti-rust treated brackets
✅ Foundation must support 120kg weight plus vibration damping
✅ Use M10 bolts to secure frame
✅ Install in well-ventilated outdoor location
✅ Ensure level installation for proper condensate drainage
✅ Connect drainage tube (included) for condensation water removal

Hydraulic Requirements

Requirement	Specification
Water Pump	Required (not included)
Recommended Flow Rate	12-18 m³/hour
Pump Head Pressure	Minimum 10m
Pipe Connection Size	50mm
Pipe Type	Hard pipes only (PVC, metal) – soft pipes not suitable
Maximum Pipe Length	≤10m for optimal efficiency

⚠️ Critical: The inlet and outlet water unions cannot bear the weight of piping. Use proper pipe supports to prevent stress on the heat exchanger.

🌡️ Seasonal Performance & Year-Round Operation

Performance Across Different Seasons

The IPHR100T operates efficiently across a wide temperature range (-10°C to +43°C), making year-round commercial pool operation economically viable.

Spring/Autumn Performance (Air 10-20°C):
✅ Excellent efficiency with COP typically 6-9
✅ Comfortable heating for extended season use
✅ Economical operation makes shoulder-season pool use affordable

Summer Performance (Air 20-30°C):
✅ Peak efficiency with COP reaching 12-16
✅ Rapid temperature recovery after cool nights
✅ Minimal running costs during peak season

Winter Performance (Air 0-10°C):
✅ Maintains effective heating with COP 4-6
✅ Automatic defrost ensures consistent operation
✅ Makes year-round heated pool facilities economically feasible

Extending Your Pool Season:
Commercial facilities using the Inverter+ 35.8kW can often extend their operational season by 2-4 months compared to unheated pools, significantly improving revenue potential while keeping energy costs manageable.

📄 Downloads & Documentation

Installation & User Manual 📥
Download Fairland Inverter+ Installation & User Manual (PDF) (opens in new tab)

Complete 29-page manual includes detailed technical specifications, installation instructions with wiring diagrams, operation guidelines, WiFi setup procedures, maintenance schedules, troubleshooting codes, and winterizing procedures. Essential reading for installers and facility managers.

🛠️ Maintenance & Winterizing Guidelines

Regular Maintenance (Performed by Qualified Technicians)

Annual Professional Service Required:

✅ Complete system inspection of all components
✅ Clean evaporator coils with approved detergents (never use gasoline, thinners, or similar fuels)
✅ Check all electrical connections, cables, and terminals
✅ Inspect and tighten mounting bolts
✅ Test refrigerant levels and check for leaks
✅ Verify proper operation of all safety devices
✅ Update WiFi firmware if available

Facility Staff Monthly Checks:

✅ Visually inspect for debris blocking air intake or outlet
✅ Remove any vegetation, leaves, or obstructions
✅ Check for unusual noises or vibrations
✅ Monitor performance data through the app
✅ Ensure proper condensate drainage

Winterizing Procedures (For Seasonal Facilities)

If your facility closes for winter or when ambient temperatures drop below 2°C without continuous water flow:

⚠️ Critical – Freeze Damage Prevention:

1. Power off the heat pump at the main breaker
2. Turn off the circulation pump
3. Unscrew both inlet and outlet water unions
4. Allow all water to drain completely from the heat exchanger
5. Leave unions slightly open to prevent pressure buildup
6. Cover the unit with a breathable weatherproof cover

💡 Important: Frozen water inside the titanium heat exchanger will cause catastrophic damage not covered by warranty. Complete drainage is essential.

For Year-Round Operations:
If maintaining operation below 2°C, ensure continuous water circulation 24/7 to prevent freezing. The anti-freeze protection function activates automatically, but water flow must be maintained.

📋 Comprehensive FAQ – Everything You Need to Know

General Questions

Q: What size pool is this heat pump suitable for?
A: The IPHR100T is designed for commercial pools with volumes between 90 and 160 cubic meters (approximately 24,000 to 42,000 gallons). It’s ideal for hotel pools, health club facilities, small leisure centers, and large residential pools. For optimal efficiency, we recommend sizing toward the middle-upper range of this capacity.

Q: Can I install this heat pump myself?
A: No. This is a commercial-grade unit requiring 400V 3-phase electrical supply. Professional installation by qualified electrical and HVAC technicians is mandatory for safety, warranty coverage, and optimal performance. Improper installation can create serious safety hazards and will void your warranty.

Q: What does “3 Phase” mean and do I need it?
A: Three-phase power provides three alternating currents, offering more stable and efficient power delivery for high-capacity equipment. It’s standard in commercial and industrial facilities but generally not available in residential properties. This requirement makes the IPHR100T suitable primarily for commercial applications.

Performance & Efficiency Questions

Q: How much will it cost to run this heat pump?
A: Running costs depend on many factors including pool size, desired temperature, ambient weather, usage patterns, and electricity rates. For a typical 140 m³ commercial pool maintained at 28°C for 6 months with good cover usage, expect annual costs of £1,800-£2,400. This represents up to 50% savings compared to standard heat pumps and 75-85% savings versus gas or electric resistance heating.

Q: What is COP and why does it matter?
A: COP (Coefficient of Performance) measures efficiency. A COP of 12 means for every 1kW of electricity consumed, the heat pump generates 12kW of heating. Higher COP = lower running costs. The IPHR100T achieves COP ratings up to 16.5 under ideal conditions and maintains excellent efficiency even in cooler weather, making it exceptionally economical.

Q: How long does it take to heat my pool initially?
A: Initial heat-up time depends on pool volume, starting temperature, and desired temperature. For a 120 m³ pool, heating from 20°C to 25°C (5°C rise) takes approximately 28 hours under moderate conditions. Using a pool cover and running during warmer daytime hours significantly reduces this time. See our heat-up time calculator table above for detailed estimates.

Q: Will the heat pump work in winter?
A: Yes! The IPHR100T operates efficiently in air temperatures from -10°C to +43°C. While efficiency reduces in colder weather (it’s physics!), the unit continues heating effectively. At 0°C ambient temperature, it still delivers substantial heating capacity, making year-round commercial pool operation economically feasible.

Operation & Control Questions

Q: What’s the difference between Smart mode and Silence mode?
A: Smart mode (default) delivers 20-100% capacity for fastest heating with intelligent optimization. Silence mode operates at 20-80% capacity with 3dB lower noise levels—perfect for overnight operation or noise-sensitive locations. Most facilities use Smart mode during the day and switch to Silence mode at night.

Q: How do I control the heat pump remotely?
A: The integrated WiFi module connects to the Fairland app (iOS and Android). After initial setup, you can monitor temperature, adjust settings, create heating schedules, track energy consumption, and receive maintenance alerts from anywhere with internet access. Multiple users can share access, ideal for facility managers and maintenance staff.

Q: Does the heat pump require a separate water pump?
A: Yes, a circulation pump (not included) is required with minimum specifications: 12-18 m³/hour flow rate and 10m head pressure. Most commercial pool installations already have suitable circulation pumps. The heat pump integrates into your existing hydraulic system.

Installation & Technical Questions

Q: How quiet is this heat pump?
A: Despite its 35.8kW capacity, it’s remarkably quiet. At 1 meter distance: 42.6-54.7 dB(A); at 10 meters: 22.6-34.7 dB(A). That’s approximately 10 times quieter than conventional heat pumps of similar capacity. In Silence mode during maintenance heating, it’s even quieter—similar to a quiet conversation or light rainfall.

Q: What clearances are needed around the unit?
A: Minimum clearances: 500mm front (air intake), 800mm back (air outlet), 300mm each side, 1500mm above. Proper airflow is critical for efficiency and longevity. Never install in enclosed spaces or allow vegetation/debris to block airflow.

Q: Can I extend the pipe runs beyond 10 meters?
A: While possible, keeping pipes ≤10m between pool and heat pump ensures optimal efficiency and performance. Longer runs increase heat loss, reduce water flow velocity, and require larger pump capacity. If longer runs are unavoidable, consult with your installer about increased pipe diameter and insulation.

Maintenance & Warranty Questions

Q: What maintenance does the heat pump require?
A: Annual professional service by qualified technicians is required, including system inspection, evaporator cleaning, electrical connection checks, refrigerant level verification, and safety device testing. Facility staff should perform monthly visual inspections, clearing any debris from air intake/outlet areas.

Q: What happens if I don’t winterize properly?
A: Frozen water inside the heat exchanger causes catastrophic damage (cracked titanium tubes) that is NOT covered by warranty. If closing seasonally or when temperatures drop below 2°C without continuous water flow, complete drainage of the heat exchanger is absolutely essential. Follow the winterizing procedures in the manual carefully.

Q: What warranty is included?
A: Warranty terms vary by region and supplier. Contact Parts4Tubs directly for specific warranty information applicable to your installation. Maintaining proper annual service records and following installation/operation guidelines is typically required to maintain warranty coverage.

Q: What if I get an error code on the display?
A: The manual includes comprehensive error code definitions (E1-F9 codes plus operational notifications). Common notifications like “no water flow” or “insufficient water flow” often indicate pump issues or air in the lines. For persistent error codes, contact qualified service technicians—do not attempt repairs yourself as this voids warranty and creates safety hazards.

🎯 Who Should Choose the Inverter+ 35.8kW IPHR100T?

This commercial-grade heat pump is the ideal choice for:

✅ Commercial Pool Facilities – Health clubs, gyms, hotels, spas with pools 90-160 m³
✅ Aquatic Centers – Municipal pools, training facilities, leisure centers
✅ Hotels & Resorts – Properties seeking premium guest experience with manageable operating costs
✅ Swim Schools – Facilities requiring consistent year-round water temperatures
✅ Large Residential Installations – Luxury homes with substantial pool volumes and 3-phase power
✅ Facilities Prioritizing Sustainability – Organizations committed to reducing carbon footprint and operating costs

Not Suitable For: ❌ Standard residential properties without 3-phase electrical supply
❌ Pools smaller than 80 m³ (consider smaller models for better efficiency)
❌ Installations unable to meet minimum clearance requirements
❌ Facilities without qualified technical support for professional installation

🌟 Why Buy from Parts4Tubs?

As a specialist retailer of hot tub spare parts and pool equipment, Parts4Tubs brings expertise and reliable service to every installation. When you choose Parts4Tubs, you benefit from:

✅ Expert Product Knowledge – Detailed technical support to ensure proper equipment selection
✅ Quality Commercial-Grade Equipment – Only premium products from established manufacturers
✅ Professional Guidance – Installation planning and technical consultation
✅ Comprehensive Support – Assistance throughout the purchasing and installation process
✅ Competitive Pricing – Fair prices on professional-grade pool heating solutions

🚀 Ready to Transform Your Commercial Pool Heating?

The Inverter+ 35.8kW 3 Phase heat pump represents the pinnacle of commercial pool heating technology. With exceptional efficiency, impressively quiet operation, comprehensive smart controls, and robust commercial-grade construction, it delivers outstanding value for demanding applications.

Key Investment Benefits:

• Up to 50% reduction in operating costs vs. conventional heating
• 2-3 year typical payback period through energy savings
• Extended season operation becomes economically viable
• Quiet operation enhances facility atmosphere
• Smart controls reduce staff workload
• Environmentally responsible technology

For personalized advice on compatibility with your specific commercial pool configuration, unique applications, or technical questions, please contact Parts4Tubs directly. Our knowledgeable team is ready to help ensure you select the perfect heating solution for your facility.