The Milwaukee eight 117 is a high-efficiency furnace designed for cold-climate homes and light commercial spaces. It combines advanced ECM motors with a two-stage gas valve to deliver quieter operation and tighter temperature control.
Homeowners upgrading from older units often choose the Milwaukee eight 117 for its reliability, filtration, and compatibility with modern zoning controls. This overview explains core performance, installation needs, and long-term value.
Technical Overview at a Glance
| Category | Specification | Value | Notes |
|---|---|---|---|
| Model | Product Line | Milwaukee Eight Series | Regional naming for mid-efficiency equipment |
| Model | Unit Size | 117,000 BTU/h | Approximate gross input at standard settings |
| AFUE | Annual Fuel Utilization Efficiency | Up to 97% | Condensing operation with efficient heat extraction |
| Compatibility | Controls & Zoning | Communicating thermostats and zone panels | Supports multi-stage sequences and feedback control |
| Sound | Typical dB Range | Low fan speed under 60 dB | ECM motors reduce audible cycling noise |
Efficiency Ratings and Energy Savings
AFUE and Operating Costs
The Milwaukee eight 117 achieves up to 97% AFUE in condensing mode, significantly improving on older mid-efficiency units. Higher efficiency directly lowers fuel consumption during the heating season.
Real-World Performance Factors
Actual savings depend on climate, insulation levels, and thermostat settings. In colder regions with longer run times, the condensate heat recovery and ECM drives deliver the most value.
Installation Requirements and Best Practices
Combustion and Ventilation
Proper flue sizing and draft control are critical for the Milwaukee eight 117. Follow manufacturer tables to match vent connector and chimney capacity to the unit output.
Electrical and Zoning Integration
Because the unit includes ECM motors and communicating controls, verify line voltage compatibility and ensure the zoning panel supports variable-speed feedback. Correct wiring prevents lockouts and diagnostic faults.
Performance and Reliability Highlights
Engineered for cold-climate operation, the Milwaukee eight 117 maintains stable heat output across a wide outdoor temperature range. The two-stage gas valve modulates firing rate to reduce temperature swings and prevent short-cycling.
Built-in diagnostics and diagnostic connectors simplify field troubleshooting, reducing service time and common failure risks. Long-life bearings and coated heat exchangers further support low lifecycle costs.
Long-Term Value and Ownership Considerations
Choosing the Milwaukee eight 117 can align with energy-budget goals and long-term property value. Careful commissioning and professional installation are key to realizing reliability and efficiency promises over the full lifespan of the unit.
FAQ
Reader questions
What size home is suitable for the Milwaukee eight 117?
Installers typically match the 117,000 BTU/h capacity to homes between 1,800 and 2,800 square feet, depending on insulation, windows, and climate. Manual J calculations should always override rules of thumb.
Does the unit support zoned heating systems?
Yes, the Milwaukee eight 117 communicates with zoning panels and communicating thermostats, allowing staged valve and blower responses that improve comfort and efficiency in multi-area layouts.
How does the ECM motor affect noise and power use?
Electronically commutated motors operate at variable speeds, lowering sound levels and electrical consumption. Users often notice quieter starts and more consistent airflow compared to single-speed PSC motors.
What maintenance schedule is recommended for optimal performance?
Annual servicing that includes heat exchanger inspection, burner adjustment, flue pressure checks, and ECM housing cleaning helps maintain the stated AFUE and prevents nuisance lockouts over the equipment life.