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FREE SHIPPING
Pump High Efficiency 3" - 80-120F
$3,695.44
$2,956.35
20% off at checkout
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- High-flow performanceDesigned for high-flow hydronic systems across a 50°F to 180°F operating range.
- ECM variable-speed motorHigh-efficiency operation with adjustable speed and 40–650W power draw.
- 208–230V compatibilityDirect connection to boilers and heat pumps on standard commercial voltage.
- Grundfos MAGNA3 replacementDirect replacement for Grundfos MAGNA3 50-120F (98126844).
- Complete installation packageIncludes 2" NPT flanges, stainless hardware, and body insulation.
Product details
Pump High Efficiency 3" - 80-120F
High-capacity flange circulator pump for 208-230V systems, built for efficient flow in larger hydronic applications (80°F to 120°F range).
Key Benefits
- Includes 3" NPT flanges and stainless hardware
- Direct replacement for Grundfos MAGNA3 80-120F (98126860)
- Direct boiler/heat pump connection (208-230V)
- Includes pre-mold body insulation to reduce heat loss
- Variable-speed ECM operation for energy savings
Specifications
- Thread Size: 3"
- Motor: 2 HP
- Voltage: 208-230V
- Capacity: 150 to 250kW
- Power Consumption: 40 to 650W
- Sizing Guide: 1x pump for 4x APOLLO 5-6T / UNI 150-300 / Pellet 150-300 / EKO 150-300 / HARD-BIO 150-300; 2x in series (up to 500kW) for 8x APOLLO 5-6T / UNI 300-500 / Pellet 300 / EKO 300 / HARD-BIO 300
Customer Success Stories
The Apollo heat pump system is very efficient, quiet, and easy to install. It stands out for its clear design, well-organized components, and advanced features like a touchscreen and remote monitoring through an app. It also allows precise temperature control and includes an electric backup for very cold conditions. Overall, it's a reliable and practical system.
Heats my home nicely and economically. The cold weather does not seem to affect the pump. Overall I'm very happy with the system. The techs have been very helpful whenever I have had questions regarding installation, etc.
Since installing the Apollo heat pump, our energy bills have plummeted. It pulls heat right out of the air outside, even when it's freezing, and uses a fraction of the electricity our old system did. It's incredibly efficient
I was skeptical about a heat pump in our cold climate, but the Apollo proved me wrong. It consistently delivers strong, comfortable heat to our entire home, even during the deepest winter freezes. It's a truly robust system
Upgrading to the Apollo air-to-water heat pump was the best decision for our home. It integrated perfectly with our existing radiant floor heating. It runs quietly outside and provides perfectly even, comfortable heat inside
You can tell just by looking at the Apollo unit that it's built to last. It handles the elements outside without a problem and operates surprisingly quietly. It gives us total peace of mind knowing we have such a dependable system
Maximizing Efficiency with Apollo Heat Pump
Economical performance that isn't affected by low temperatures.
Reliable Heating in Cold Weather
Economical performance that isn't affected by low temperatures.
Incredible Energy Savings
Slashing utility bills with high-efficiency air-to-water technology
Reliable Heat, No Matter the Weather
Powerful performance that stands up to freezing temperatures
The Ultimate Home Heating Upgrade
Seamlessly integrating with existing radiant or hydronic systems
Built to Weather Any Storm
Heavy-duty construction for years of reliable, quiet operation
Maximizing Efficiency with Apollo Heat Pump
Reliable Heating in Cold Weather
Incredible Energy Savings
Reliable Heat, No Matter the Weather
The Ultimate Home Heating Upgrade
Built to Weather Any Storm
High Efficiency Pump 2"
Main features
-
High Flow Performance
Designed for high-flow operation in large hydronic systems across a wide operating temperature range.
-
ECM Variable-Speed Motor
High-efficiency variable-speed ECM motor reduces energy consumption based on system demand.
-
Direct System Integration
Compatible with 208–230V systems for direct connection to boilers and heat pumps.
-
Complete Installation Package
Includes NPT flanges, stainless hardware, and pre-mold body insulation to reduce heat loss.
-
Direct Grundfos MAGNA3 Replacement
Drop-in replacement for the corresponding Grundfos MAGNA3 model for straightforward system upgrades.
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Flexible Sizing Options
Available in multiple flange sizes with single or series configurations to match varying system capacity requirements.
Variable-Speed Operation
ECM motor continuously adjusts speed to match system demand, minimizing energy use without sacrificing flow.
System Compatibility
Designed for 208–230V systems for direct connection to boilers and heat pumps.
Installation Components Included
Supplied with NPT flanges, stainless hardware, and pre-mold body insulation for straightforward installation.
Application Sizing
Available in single or series configurations to match system capacity requirements — see product description for model-specific guidance.
Technical specifications
Common specifications for the High Efficiency Pump series. Size, capacity, and temperature range vary by model — see the product description for model-specific details.
| Available Sizes | 2", 2-1/2", 3", 4" |
|---|---|
| Voltage | 208–230V |
| Motor Type | ECM variable-speed |
| Power Consumption | 31 to 1263W (varies by model) |
| Operating Temperature | 50°F to 180°F (varies by model) |
| Included | NPT flanges, stainless hardware, pre-mold body insulation |
| Compatible Replacement | Grundfos MAGNA3 (model-specific) |
| Sizing | Single or series configurations — see product description for model-specific guidance |
Use a family-specific bottom-tabs section later if this product needs comparison tables, grouped specs, or product-handle logic.
Product documents
Product documents will be added here when available.
