• High Efficiency minimum 93.5% AFUE on Upflow Models and up to 92.4% on Downflow/ Horizontal Models

• Heating Capacities from 45,000 to 120,000 BTU/HR

• Stainless Steel primary and secondary heat exchangers backed with limited lifetime warranties

1. Adjustment-Free In-Shot Burners. The natural (or optional LP) gas is ignited by the direct spark ignition at the in-shot burners.The in-shot burner’s shutter-free design requires no adjustments to regulate the air/gas mixture.

2. Efficient Primary & Secondary Heat Exchanger. The Ruud Achiever® 90 Plus® heat exchanger is renowned for its dependability and efficiency. It’s constructed of aluminized and stainless steel for maximum resistance to rust and corrosion. And it’s backed by a limited lifetime warranty.

3. Slide-Out Blower. Thanks to adjustable controls for the blower, your technician can precisely match airflow to the specific comfort requirements of your home.

4. Easy To Access and Clean Filter. The Ruud Achiever® 90 Plus® is equipped with a permanent, washable filter that’s easy to access and clean. You won’t ever have to deal with the hassle and expense of replacement filters.

5. Efficient Direct Spark Ignitor. Direct spark ignition is an extremely dependable and efficient way to light the burner. And it eliminates the need for a standing pilot. For added safety, the remote flame sensor constantly monitors the burner flame to ensure it is operating as it should.

6. Slow-open Gas Valve. The redundant gas valve is a 24-volt slow-opening valve that delivers gas in a regulated flow to the patented “in-shot” burners.

7. Quiet Draft Inducer. This draft inducer, which was specifically designed for the 90 Plus® upflow gas furnace, quietly provides air for combustion while simultaneously venting outdoors the products of combustion from the furnace heat exchanger.

8. Integrated Furnace Control with On-board Diagnostics. The “Brain” of the Ruud Achiever® 90 Plus® is the Integrated Furnace Control (IFC) which directs all activities of major furnace components. The control features low-speed continuous fan operation and accessory terminals.

A Furnace That "Grows" To Meet Your Comfort Needs
The Ruud Ultra Series® Super Quiet 80® Gas Furnace has two stages of heating to save energy and keep your home at its comfortable best. Most furnaces
are either “off” or “on at 100%” capacity, no matter what your heating comfort needs may be. The Ruud Ultra Series Super Quiet 80, however, operates at 70% and 100% capacity. Most of the time, this furnace operates in its energy-saving “low-heat” stage to deliver a gentle and steady flow of heating comfort. On the coldest days, when you need more heat, the furnace automatically switches to the “high-heat” stage to deliver the maximum heating comfort. The temperature of your home stays at the comfort level you select – wherever you set the thermostat.

Is It On?
Thanks to two-stage operation and the advanced ECM motor, the Ruud Ultra Series® Super Quiet 80® is quieter than conventional single-stage furnaces.
In comparison tests, the ECM motor was two to ten decibels of sound level more quiet than a conventional furnace motor – even at high speed.
Plus the ECM motor has a special “soft start” and “soft stop” feature so that every move from stage to stage or from cycle to cycle is virtually unnoticeable! Also, To help improve the sound quality of the Ruud Super Quiet 80 line of furnaces,we re-engineered the door and top-plate to provide a sound barrier between the furnace’s operation and your home.

Advanced Motor Technology
By now you’ve probably read about the GE® ECM® motor and wondered, “how is this an advantage for me?” To begin with, the ECM motor eliminates temperature swings in your home by using a continuous blower setting. Typical gas furnaces use only one heating speed – which is like having only one speed for your car! The ECM motor is also 20% to 30% more efficient than standard blower motors. Using only 50 to 75 watts during constant fan mode, the system circulates air throughout your home, providing total home comfort for pennies a day. And because the ECM motor slowly ramps its speed up, the noisy start-up produced by other blower systems is eliminated.

• Direct Spark Ignition and Remote Sensor
  The direct spark ignition is an efficient method of gas ignition while the remote sensor monitors the flame.

• Furnace Control
  This solid state integrated furnace control is the “brain” of this dependable furnace-controlling the blower and inducer  
  motors for heating capacity and efficiency.

• Patented Heat Exchanger
  Extremely compact the heat exchanger provides a faster, more efficient transfer of heat. The aluminized and stainless  
  steel construction is so reliable its backed with a 20-year limited warranty.

• Induced Draft Blower
  It works specifically with the heat exchanger. The blower pulls hot combustion gases through the exchanger and vents
  them outdoors.

• In-Shot Burners
  Regulates the air/gas mixture.

• Blower Motor
  An easy slide out blower motor for easy access. The blower quietly circulates air around the heat exchanger, where its
  heated to comfortably warm your home.

• Downflow models easily field convertible to either horizontal right or horizontal left configuration.
• Heating capacities from 56,000 to 151,200 BTU/HR.
• A.F.U.E. efficiency ratings above 80%.
• Compact design, from 46"– 49" in height, cabinet widths ranging from 21"– 28".

• Dependable operation that is so quiet, you hardly know it’s running.
• A special design that distributes heating comfort evenly throughout your home.
• A durable, stainless steel primary heat exchanger that carries a limited lifetime warranty.