
FF70173LM98U Comparison
| photo | price | summary | rating |
|---|---|---|---|
![]() | $1895.00 | Condition is New, Fujitsu 70,000 BTU 98% Upflow Modulating Natural Gas Furnace - FF70173LM98U, shipping cost = $ | 100.0% |

The Fujitsu FF70173LM98U is a high-efficiency, upflow modulating natural gas furnace designed for residential heating applications. This model is part of Fujitsu's Advanced Series, which is known for its energy savings, quiet operation, and reliable performance.
The furnace features a modulating gas valve and an ECM (Electronically Commutated Motor) variable speed blower motor. The modulating gas valve allows the furnace to maintain a consistent temperature by adjusting the gas input in small increments, while the variable speed blower motor ensures even airflow distribution and reduces energy waste by only using the necessary amount of power. The combination of these features results in an AFUE (Annual Fuel Utilization Efficiency) rating of up to 98%, making it an excellent choice for homeowners looking to minimize their heating costs.
The Fujitsu FF70173LM98U is designed with a cabinet made of heavy-gauge, galvanized steel for durability and resistance to corrosion. The furnace also includes a multi-position, heavy-duty insulated combustion chamber that helps retain heat and reduce condensation. The cabinet is also insulated with high-density, closed-cell polyurethane foam to minimize heat loss.
The furnace comes with a number of convenient features, including an easy-to-use, electronic ignition system, a multi-speed fan with a quiet operation mode, and a factory-installed filter drier to protect the heating system from moisture damage. The furnace also includes a diagnostic control board that can detect and display fault codes, making it easier for homeowners to troubleshoot any issues.
The Fujitsu FF70173LM98U is designed to work with standard 2-1/2 inch ductwork and requires a minimum clearance of 3 inches around the sides, 6 inches at the rear, and 12 inches above the furnace for proper installation. The furnace is also compatible with most thermostats and can be easily integrated into existing heating systems.
Overall, the Fujitsu FF70173LM98U is a high-performance, energy-efficient natural gas furnace that is designed to provide reliable, consistent heating for residential applications. With its advanced features, quiet operation, and durable construction, it is an excellent choice for homeowners looking to upgrade their heating system and reduce their energy costs.
Fujitsu FF70173LM98U 70-98 Upflow Modulating Natural Gas Furnace: A Detailed Analysis
The Fujitsu FF70173LM98U is a 70,000 to 98,000 BTU upflow modulating natural gas furnace. In this analysis, we will discuss some of its key features, advantages, and disadvantages to help you make an informed decision.
Features:1. Upflow design: This furnace is designed to be installed in an upright position and can be ducted to deliver conditioned air in an upward direction.
2. Modulating operation: It offers precise temperature control with its modulating gas valve and fan motor.
3. ENERGY STAR certified: This furnace meets the Energy Star guidelines for efficiency and helps reduce energy consumption.
Advantages:1. Energy efficiency: With an AFUE rating of up to 98.5%, this furnace offers excellent energy efficiency and can help lower your heating costs.
2. Quiet operation: The variable-speed ECM motor provides quiet and efficient operation, reducing noise levels and maintaining a comfortable indoor environment.
3. Consistent temperature: The modulating operation allows for precise temperature control, ensuring that your home stays warm and comfortable throughout the heating season.
Disadvantages:1. Cost: The Fujitsu FF70173LM98U is a high-efficiency furnace, and its cost reflects its advanced features and capabilities.
2. Installation: Due to its upflow design and modulating operation, this furnace may require professional installation to ensure proper performance and safety.
3. Size: This furnace is larger than some standard furnaces, which may make it more challenging to install in tight spaces.
Conclusion:The Fujitsu FF70173LM98U 70-98 Upflow Modulating Natural Gas Furnace is a high-performance, energy-efficient heating solution for homes seeking consistent temperature control, quiet operation, and excellent energy savings. While its cost and installation requirements may be drawbacks for some, its advanced features and capabilities make it a worthwhile investment for those prioritizing comfort and energy efficiency.
Recommendation:If you are looking for a high-efficiency, quiet, and consistent heating solution for your home, the Fujitsu FF70173LM98U 70-98 Upflow Modulating Natural Gas Furnace is an excellent choice. However, ensure that you consider the cost and installation requirements before making your final decision. It is always recommended to consult with a professional HVAC technician to assess your home's heating needs and determine if this furnace is the best fit for you.
Details:
Integrated control boards feature dip switches for easy system set up. Ignition system Dis for reliability and longevity. Gas furnace family. Across all model sizes heat exchange is removable for improved serviceability.
Dimensions:34 x w 17-1/229-5/8. Just the make offer button at top of page and let us know what your willing to pay for it. No APO/FPO delivery. Pre marked hoses insures proper system drainage.
98% residential gas furnace CSS certified. Quarter turn door fasteners for tool less access. For optimal performance a communicating control is recommended; must be paired with communicating enabled heat pump or air conditioner, for fully hvac system. Self priming condensate trap.
Fujitsu 70,000 btu 98% upflow. Solid bottom included. Variable speed blower motor technology provides ultimate humidity control, quieter sound levels, and year round energy savings. Replaceable collector box.
Modulating operation to save energy and maintain optimal comfort level. FF70173LM98U. Hemmed edges on cabinet and doors. Solemnized steel primary and stainless secondary construction provide maximum corrosion resistance thermal fatigue reliability.
Blower shelf design serviceable in all furnace orientations. Water management system with patented blocked drain sensor. If it is a fair price, you might just strike deal. Standard features model no.
Eco net enabled hvac product.
specifications centrafurn:
- brand: Fujitsu
- mpn: Ff70173lm98u
- system configuration: Upflow
- power source: Natural Gas
- color: Gray
- item depth: 29-5/8
- modified item: No
- power phase: 1 Phase
- california prop 65 warning: Warning
- heating technology: Forced Air/fan
- type: Furnace
- btu heating rating: 70, 000
- heating btu: 70, 000 Btu
- manufacturer warranty: 5 Years
- item height: 34
- voltage: 115 V
- annual fuel utilization efficiency: Afue
- finish: Painted
- item width: 17-1/2
- power: 120v
shipping centrafurn:
general centrafurn:
- category: Home & Garden > Heating, Air > Cooling Systems > Central Furnaces
seller centrafurn:
- city: paw paw, michigan
- # reviews: 4033
- rating: 100.0%
offer centrafurn:
- in stock #: 1
- options: ship-to-home
- started: august 13, 2025
- availability: in stock
- best offers: true
- price: $1895.00
- item condition: New
- sold #: 20
returns centrafurn:
- policy: returns accepted
- method: money back
- paid by: buyer
- time: 14 days
payments centrafurn:
- cash
- other
- credit card: discover
- wallet: paypal
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