GRAT 75,000 BTU Full Inverter or GRAT 75,000 BTU Inverter Pool? Which GRAT Model to Buy
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When comparing the grat 75000 btu full inverter vs 75000 btu inverter pool models, you see two units with identical core heating power. Both deliver 75,000 BTU for pools up to 21,000 gallons and feature full inverter compressors with smart app control. The main difference lies in their physical design. Model A uses a standard side-discharge layout with specific cooling ranges. Model B opts for a compact top-discharge design to save space. You must choose based on your installation constraints.
Key differences
| Aspect | GRAT 75,000 BTU Full Inverter Pool Heat Pump | GRAT 75,000 BTU Inverter Pool Heat Pump |
|---|---|---|
| Model | GTHP2109CSA32 | Sphp-120 |
| Height | 22 inches | 36 inches |
| Length | 34 inches | 36 inches |
| Discharge Design | Side airflow | Top-discharge |
| Color | Gray | Gray |
| Cooling Range | 45°F–82°F | not listed |
Which one should you choose?
Choose GRAT 75,000 BTU Full Inverter Pool Heat Pump if
- You need a shorter unit that fits in tighter vertical spaces.
- You want to know the specific cooling temperature range.
- You prefer a standard side-discharge airflow configuration.
Choose GRAT 75,000 BTU Inverter Pool Heat Pump if
- You need more clearance for side airflow but have limited height.
- You want a top-discharge design for flexible installation spots.
- You prefer a slightly wider footprint for stability.
Verdict: Choose the GRAT GTHP2109CSA32 if vertical space is your primary constraint. Pick the Sphp-120 if you need top-discharge airflow to fit specific yard layouts. Both models offer identical heating performance for your pool size.
Size, Shape, and Control Specs
Physical Dimensions
The GRAT 75,000 BTU Full Inverter Pool Heat Pump measures 34 inches in length, 22 inches in height, and 18 inches in width. This creates a more compact footprint for installation. The GRAT 75,000 BTU Inverter Pool Heat Pump is larger, measuring 36 inches in length, 36 inches in height, and 18 inches in width. The taller design of the second model accommodates its top-discharge airflow system, which requires different clearance considerations than the side-discharge design of the first unit. You need to check your available space carefully before deciding.
Control Type
Both units offer smart app control via Wi-Fi and Bluetooth connectivity. The GRAT 75,000 BTU Full Inverter Pool Heat Pump specifies that Bluetooth is required for initial device pairing, while a 2.4GHz Wi-Fi connection enables remote control and monitoring. It also includes an onboard digital control panel for local adjustments. The GRAT 75,000 BTU Inverter Pool Heat Pump lists smart Wi-Fi and Bluetooth control but does not explicitly mention an onboard digital panel in its provided specifications. Both allow you to adjust settings from your smartphone, ensuring convenient management of your pool temperature from anywhere.
Operational Modes
Both heat pumps feature heating and cooling operational modes. The GRAT 75,000 BTU Full Inverter Pool Heat Pump provides specific temperature ranges: a heating range of 46°F to 104°F and a cooling range of 45°F to 82°F. This gives you precise control over the water temperature for various seasons. The GRAT 75,000 BTU Inverter Pool Heat Pump lists heating and cooling modes but does not provide specific temperature ranges in the available data. If you need to know the exact cooling limits, the first model offers more detailed specifications.
Construction Material
Both models prioritize durability with corrosion-resistant materials suitable for various water types. The GRAT 75,000 BTU Full Inverter Pool Heat Pump features a titanium heat exchanger compatible with both freshwater and saltwater pools. Its housing is made of UV-resistant ABS to protect against fading, cracking, and harsh weather. The GRAT 75,000 BTU Inverter Pool Heat Pump also uses a titanium heat exchanger and highlights advanced hydrophilic fin technology to resist corrosion and improve heat transfer. Its cabinet is described as modern white, while the first model is gray. Both are built for long-term outdoor performance.
Noise Level
Quiet operation is a key feature for both units. The GRAT 75,000 BTU Full Inverter Pool Heat Pump operates at approximately 50 dB, which is considered low noise for pool equipment. This allows for comfortable use without disturbing neighbors. The GRAT 75,000 BTU Inverter Pool Heat Pump claims advanced inverter technology helps reduce operating noise, but it does not provide a specific decibel rating in the provided data. Both models aim for peaceful swimming environments, but the first model gives you a concrete number to compare against other equipment.
Choose the Right GRAT Model
Limited space installers
This model measures 34 by 22 by 18 inches. Its compact footprint fits tighter spaces better than the taller alternative. The shorter height of 22 inches allows placement under lower structures or in narrower side yards where vertical clearance is restricted.
Flexible placement seekers
This unit features a top-discharge design that requires less side clearance. It stands 36 inches tall with a 36 by 18 inch base. This shape suits open areas where height is not an issue but horizontal space is limited for side airflow.
Saltwater pool owners
The data highlights advanced hydrophilic fin technology for this model. This feature helps resist corrosion and reduce frost buildup in saltwater environments. Both units have titanium heat exchangers, but this specific design adds extra protection for harsh chemical conditions.
The products compared
GRAT 75,000 BTU Full Inverter Pool Heat Pump
Best for: medium pools needing smart heating and cooling
- Heating Capacity
- 75,000 BTU
- Pool Capacity
- 21,000 Gallons
- Compressor Technology
- Full Inverter
- Operational Modes
- Heating & Cooling
- Connectivity
- WiFi, Bluetooth
- Control Type
- App Control
View on Amazon: GRAT 75,000 BTU Full Inverter Pool Heat Pump Affiliate link
This GRAT heat pump offers 75,000 BTU of heating and cooling for pools up to 21,000 gallons. It uses full inverter technology to maintain stable temperatures efficiently. You can control it via a mobile app using WiFi or Bluetooth. The unit features a titanium heat exchanger for saltwater compatibility and operates quietly at 50 dB. Its UV-resistant housing protects against outdoor weather.
Pros
- 75,000 BTU heating capacity for pools up to 21,000 gallons
- Full inverter compressor for energy-efficient temperature stability
- WiFi and Bluetooth app control with remote monitoring
- Titanium heat exchanger resists corrosion in saltwater pools
- Dual heating and cooling modes with automatic defrost
Cons
- Requires 2.4GHz WiFi for remote app functionality
- Bluetooth pairing needed for initial device setup
- Dimensions of 34 x 18 x 22 inches require dedicated space
Good fit if
- You own a pool up to 21,000 gallons
- You want precise remote temperature control via an app
- You need a unit that handles both heating and cooling
Skip if
- You have a pool larger than 21,000 gallons
- You prefer gas heating over electric heat pump technology
- You cannot access 2.4GHz WiFi for smart features
Verdict: GRAT 75,000 BTU Full Inverter Pool Heat Pump delivers stable, app-controlled comfort for medium-sized pools. It suits owners who value energy efficiency and remote management over raw heating speed.
GRAT 75,000 BTU Inverter Pool Heat Pump
Best for: smaller pools needing app control and cooling
- Heating Capacity
- 75,000 BTU
- Pool Capacity
- 21,000 Gallons
- Compressor Technology
- Full Inverter
- Operational Modes
- Heating and Cooling
- Connectivity
- WiFi and Bluetooth
- Use
- Poolside, Inground Pools
View on Amazon: GRAT 75,000 BTU Inverter Pool Heat Pump Affiliate link
This GRAT heat pump delivers 75,000 BTU of heating and cooling for pools up to 21,000 gallons. It uses full inverter compressor technology to adjust output for stable temperatures and efficiency. You get WiFi and Bluetooth control via a smartphone app. The top-discharge design saves space, and a titanium heat exchanger resists corrosion. It is a practical option for residential pools needing precise temperature management.
Pros
- 75,000 BTU heating and cooling capacity
- Full inverter compressor for energy efficiency
- WiFi and Bluetooth smartphone control
- Top-discharge design saves side clearance
- Titanium heat exchanger resists corrosion
Cons
- Limited to pools up to 21,000 gallons
- Gray cabinet color may not blend with all decor
- Requires 1.5-inch PVC adapters for installation
Good fit if
- You have a pool under 21,000 gallons
- You want precise temperature control via an app
- You need a cooling function for summer
Skip if
- You have a pool larger than 21,000 gallons
- You need side-discharge airflow for tight spaces
- You prefer a white cabinet for outdoor aesthetics
Verdict: GRAT 75k BTU Full Inverter Heat Pump suits owners of smaller pools who want app-based control and cooling. It fits well where space is tight and efficiency matters.
Specifications side by side
| Spec | GRAT 75,000 BTU Full Inverter Pool Heat Pump | GRAT 75,000 BTU Inverter Pool Heat Pump |
|---|---|---|
| Heating Capacity | 75,000 BTU | 75,000 BTU |
| Pool Capacity | 21,000 Gallons | 21,000 Gallons |
| Compressor Technology | Full Inverter | Full Inverter |
| Operational Modes | Heating & Cooling | Heating and Cooling |
| Connectivity | WiFi, Bluetooth | WiFi and Bluetooth |
| Control Type | App Control | not stated |
| Use | Poolside, Inground Pools | Poolside, Inground Pools |
| Capacity | 21,000 Gallons | 21,000 Gallons |
| Dimensions | 34 × 18 × 22 inches | 36 × 18 × 36 inches |
| Weight | not stated | 98.1 pounds |
| Color | Gray | Gray |
| Model | GTHP2109CSA32 | Sphp-120 |
| Size | not stated | 21,000 Gallons |
Frequently asked questions
Does the GRAT 75,000 BTU Full Inverter Pool Heat Pump cool as well as it heats?
Yes, this model supports cooling functions. It is best for medium pools needing smart heating and cooling. The app control lets you manage both modes remotely. This dual capability makes it suitable for year-round temperature management in your pool water.
Which GRAT heat pump is better for tight spaces?
The GRAT 75,000 BTU Full Inverter Pool Heat Pump has a more compact footprint. It measures 34 inches in length, 22 inches in height, and 18 inches in width. The shorter height allows placement under lower structures or in narrower side yards compared to the taller alternative.
Can I control the GRAT heat pump with my phone?
Both models feature app control for remote management. You can adjust settings and monitor status from your device. This smart control is a key feature for both the Full Inverter and the standard Inverter Pool Heat Pump models.
What is the weight of the GRAT 75,000 BTU Inverter Pool Heat Pump?
The GRAT 75,000 BTU Inverter Pool Heat Pump weighs 98.1 pounds. This weight is specific to this model, which measures 36 inches in length and 36 inches in height. The Full Inverter model does not list a weight in its specifications.
Are both GRAT models suitable for 21,000-gallon pools?
Yes, both models are rated for pools up to 21,000 gallons. The GRAT 75,000 BTU Inverter Pool Heat Pump explicitly lists this capacity. The Full Inverter model also supports this volume, making both options viable for medium to large residential pools.
Do the GRAT heat pumps come in gray?
Yes, both models are available in gray. The color is listed as a standard spec for both the Full Inverter and the Inverter Pool Heat Pump. This neutral finish helps them blend into most outdoor poolside environments.