Zodiac Heat Pump Z400IQ And Z550IQ Outdoor Pools
Condition: New product
A Practical Solution for Efficient Pool Heating and Space Constraints
Heating a pool often means dealing with high energy use, noise, and limited installation space. Many systems struggle to balance performance with efficiency.
Zodiac Z400iQ and Z550iQ solve this by combining compact vertical airflow, quiet operation, and smart control. You get stable water temperature with controlled energy use and minimal footprint.
Identity
Zodiac Z400iQ and Z550iQ heat pumps, air to water pool heating systems for residential pools, designed for efficient temperature control and extended swimming seasons.
Select an option above for the dispatch date.
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Data sheet
| Product Type | : Pool heaters |
| Shipping_label | : oversized |
More info -
Designed for these situations
- You replace an older heat pump with high noise and poor efficiency
- You install equipment in tight technical spaces near the pool
- You manage a salt pool and need corrosion resistant components
- You want remote control of temperature and modes from your phone
- You need stable heating across spring and autumn conditions
- You compare On Off systems versus inverter technology
Experience the difference in real use
You start the season with cold water. In Z400iQ, heating begins with steady output. In Z550iQ, Boost mode increases compressor speed for faster temperature rise.
Once target temperature is reached, Z550iQ reduces power automatically. Noise drops and consumption stabilizes. The system adapts instead of switching fully on or off.
With vertical airflow, the unit fits closer to walls and structures. This reduces installation constraints by up to 70 percent compared to front discharge units
Make the right choice
| Model | Power | Recommended Pool Volume | Best Use Case | Technology |
| Z400iQ MD4 | 10 kW | 35 to 50 m³ | Small pools, summer use | On Off |
| Z400iQ MD5 | 12 kW | 45 to 60 m³ | Medium pools, moderate use | On Off |
| Z400iQ MD7 TD7 | 18 kW | 70 to 90 m³ | Larger pools, extended season | On Off |
| Z400iQ MD8 MD9 TD8 TD9 | 22 kW | 80 to 110 m³ | Large pools, high demand | On Off |
| Z550iQ MD4 | 12 kW | 45 to 60 m³ | Medium pools, stable daily use | Full Inverter |
| Z550iQ MD5 TD5 | 15 kW | 55 to 75 m³ | Medium to large pools, frequent use | Full Inverter |
| Z550iQ MD8 TD8 | 20 kW | 80 to 110 m³ | Large pools, long season, low noise priority | Full Inverter |
Use this rule when choosing:
- Lower range if you use a pool cover and heat only in summer
- Middle range for regular use from spring to autumn
- Upper range if you want faster heating or have heat loss
- Prefer inverter models for daily use and noise control
- Oversize On Off models to avoid long heating cycles
Choose Z550iQ if you want reduced energy use and adaptive control. Choose Z400iQ if you want a simpler system with stable operation.
Why this product stands out
- Vertical air discharge reduces installation space requirements
- Integrated Wifi with iAquaLink control for remote management
- Titanium heat exchanger resists corrosion in salt and treated water
- Reversible operation allows heating and cooling
- Multiple operating modes in Z550iQ optimize performance and noise
Materials and construction
Body in galvanized steel or polypropylene. Titanium condenser for chemical resistance. Optional stainless steel front panel improves durability in coastal environments
Performance specs
- Heating capacity range: 10 to 22 kW Z400iQ
- Heating capacity range: 12 to 20 kW Z550iQ
- COP up to 5.9 Z400iQ, up to 12 variable Z550iQ
- Sound pressure: 25 to 37 dB at 10 m
- Operating air temperature: 0 to 50 °C
- Refrigerant: R32 low GWP
Compliance and safety
CE compliant for EU directives including electrical and environmental requirements. Tested under EN60704 acoustic standards for noise measurement
Compatibility and exclusions
Compatible with in ground, above ground, and semi in ground pools up to 145 m³. Works with chlorine, bromine, and salt systems up to 6 g per litre.
Not suitable for indoor installation without ventilation planning. Not designed for industrial or commercial pools beyond specified volume range.
Extractable specifications
- Product type: Air to water pool heat pump
- Technology: On Off or Full inverter
- Heat exchanger: Titanium
- Refrigerant: R32
- Airflow: Vertical discharge
- Control: Wifi via iAquaLink
- Water connection: 50 mm PVC
- Max pressure: 3.5 bar
- Noise level: 25 to 37 dB at 10 m
Equivalence mapping
- Replaces: Zodiac Z300 series
- Alternative to: Hayward EnergyLine Pro FI, Fairland inverter heat pumps
- Not the same as: fixed speed entry level heat pumps without Wifi or inverter control
How to get best results
- Install on stable base with clear airflow space
- Connect to filtration system for heating priority control
- Use pool cover to reduce heat loss
- Select Eco Silence for maintenance temperature
- Use Boost mode only during initial heating
Common questions
- Is inverter worth it Yes if you run the system daily and want lower consumption and noise
- Does it work with salt water Yes titanium exchanger resists corrosion
- Can I install it near a wall Yes vertical airflow reduces clearance needs
- Do I need professional installation Yes for warranty and correct hydraulic connection
Available options
- 12 kW | Z550iQ MD4 | WH000519
- 15 kW | Z550iQ MD5 | WH000520
- 15 kW | Z550iQ TD5 3 Phase | WH000521
- 20 kW | Z550iQ MD8 | WH000522
- 20 kW | Z550iQ TD8 3 Phase | WH000523
- 10 kW | Z400iQ MD4 | WH000382
- 12 kW | Z400iQ MD5 | WH000383
- 18 kW | Z400iQ MD7 | WH000384
- 18 kW | Z400iQ TD7 3 Phase | WH000385
- 22 kW | Z400iQ MD8 | WH000386
- 22 kW | Z400iQ TD8 3 Phase | WH000387
- 22 kW | Z400iQ MD9 | WH000388
- 22 kW | Z400iQ TD9 3 Phase | WH000389
Merchant
LordsWorld supplies this product across the EU. Technical verification is performed before dispatch when required to ensure correct sizing and compatibility.