Ruud Furnaces

Everything you need on Ruud Furnaces, including model details, industry rankings and customer reviews, all in one place.

Ruud Furnace Overview

Ruud has competed in the home heating, cooling and water heating industry for more than a century. Nowadays, the company offers a range of furnaces to meet different needs. Nevertheless, sorting through your options can be confusing. To help you decide, here is an in-depth look at Ruud furnaces.

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Consumer Reviews of Ruud


  • Very Satisfied
  • Somewhat Satisfied
  • Neutral
  • Somewhat Unsatisfied
  • Very Unsatisfied
  • #13 of 86 Furnaces
  • 41.57% of customers recommended

Reviews by Furnace Series

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Furnace overview

There are two basic types of Ruud furnaces: gas furnaces and oil furnaces. Each has its own unique features, advantages and drawbacks for different homes.

Both gas and oil furnaces share a cabinet in your home with the indoor parts of your air conditioner. The two systems also share a thermostat and a series of ducts. Homes without air conditioners can still have traditional furnaces installed.

Although gas furnaces and oil furnaces are similar in many ways, it is important to understand their differences. Natural gas is less expensive than oil, and natural gas furnaces are more eco-friendly and more efficient than oil furnaces. However, these units are more expensive up front and can only be installed if natural gas is available in your area.

Oil furnaces are less expensive than natural gas furnaces, but fuel prices vary based on the volatile oil market. Oil is less environmentally friendly than gas, and oil furnace owners must schedule regular cleanings and oil deliveries. However, those living in very cold regions should note that oil provides more heat per BTU (British thermal unit) than gas.

All furnaces are rated for energy efficiency. The rating is a percentage known as the AFUE (annual fuel utilization efficiency), which explains how much of the energy consumed by the furnace becomes heat rather than being lost. A higher percentage indicates a more efficient unit.

Ruud furnace series and models



  • Gas furnace


  • Econet enabled — smart monitoring system that delivers remote service assistance, maintenance alerts and precise climate control
  • PlusOne Water Management System — shuts off the furnace if a drain becomes blocked
  • Variable speed blower motor and modulating gas valve

Tech specs

  • Available in three and five-ton models
  • 34 in. high x 17.5 in. wide x 29.625 in. deep (three-ton) to 34 in. x 24.5 in. x 29.625 in. (five-ton)
  • 60,000 to 115,000 BTUs depending on size

Energy efficiency


  • Starting at $1,650, depending on size, plus installation
  • Pricing may vary based on geographic region, installation difficulty and home size
  • Contact a local HVAC professional for the most updated pricing



  • Gas furnace


  • Two-stage operation
  • Direct spark ignition
  • PlusOne Water Management System

Tech specs

  • Available in three and five-ton models
  • 34 in. high x 17.5 in. wide x 29.625 in. deep (three-ton) to 34 in. x 24.5 in. x 29.625 in. (five-ton)
  • 40,000 to 115,000 BTUs depending on size

Energy efficiency


  • Starting at $1,500, depending on size, plus installation
  • Exact costs vary according to region, home size and the difficulty of installation
  • Contact a local HVAC professional for a detailed estimate based on your needs



  • Gas furnace


  • Entry-level, budget-friendly
  • Constant torque motor
  • Removable heat exchanger

Tech specs

  • Available in three and five-ton models
  • 34 in. high x 21 in. wide x 28.063 in. deep (three-ton) to 34 in. x 24.5 in. x 28.063 in. (five-ton)
  • 70,000 to 125,000 BTUs

Energy efficiency

  • AFUE 80%


  • Starting at $800, depending on size, plus installation
  • Costs vary by geographic location, installation difficulty and home size
  • Contact a local HVAC professional for the most accurate price estimate



  • Oil furnace


  • ECM motor
  • Three-pass heat exchanger
  • Variety of options for different installation needs

Tech specs

  • Available in two and five-ton models
  • 40 in. high x 44.5 in. wide x 22.063 in. deep (two-ton) to 40 in. x 50.625 in. x 22.063 in. (Highboy)
  • 70,000 to 105,000 BTUs

Energy efficiency

  • 86.5% AFUE


  • $1,785 to $2,135, plus installation
  • Pricing may vary by your home’s size, your geographic area and how difficult the installation is
  • For the most accurate cost estimate, contact a local HVAC professional



  • Oil furnace


  • Four-speed direct drive motor
  • External cleanout ports
  • Standard Honeywell controls

Tech specs

  • Four and five-ton models available
  • 40 in. high x 20.25 in. wide x 47.5 in. deep (four-ton), 56.5 in. x 25.5 in. x 38 in. (five-ton)
  • 84,000 to 175,000 BTUs

Energy efficiency

  • AFUE 85.9%


  • $1,600 to $2,265, depending on size, plus installation
  • Pricing tends to vary based on geographic location, home size and difficulty of the installation
  • Contact a local HVAC professional for a detailed estimate

Care and maintenance

Regular cleaning and maintenance are essential to the safety, efficiency and lifespan of both gas and oil furnaces. If you have a gas furnace and no pets, change the filter every 90 days. Those with pets should change it every 60 days. If you have multiple furry friends, or if anyone in your home has severe allergies or asthma, you may need to change your filter more often – perhaps every 20 days. 

Check the flames in the burner every so often to make sure they are burning a clean blue. Listen for any strange noises or vibrations. Have your furnace serviced annually in the fall before the heating season begins.

Soot and debris are natural byproducts of an oil furnace. Change the filter and carefully clean the furnace right before cold weather sets in and again halfway through the heating season. Inspect the outside of the furnace for soot periodically and listen for vibrations or odd noises. Check the smoke coming out of the chimney to make sure it isn’t black. Have your furnace professionally serviced each fall.

Ruud furnace warranties

Ruud warranties vary depending on the exact model you choose. Lower end oil furnaces carry a five-year parts warranty and a limited lifetime warranty on the heat exchanger, while the highest end Ultra series gas furnaces offer a 10-year parts warranty, a limited lifetime heat exchanger warranty and a limited lifetime conditional unit replacement warranty. 

In addition, extended warranties may be available through your dealer. Ask your HVAC professional for specific warranty information for your chosen unit.

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Ruud Furnace Reviews

Showing 1-5 of 84 reviews


1.0 rating
Very Unsatisfied

I am on my second Rudd Furnace in 2 years. The heat exchanger keeps getting plugged up. It is still under warranty but now they are blaming it on bad propane. Nobody can figure out why it keeps doing this.

K. Lewis


1.0 rating
Very Unsatisfied

Had this new Ruud furnace put in 15 years ago and has had to have maintenance every year. Left my family in the cold every single winter at least once minimum. Have had service techs in that say they got it fixed and before they even get back to start making there big bill out I'm freezing my ass off. Southern Alberta dealer from picture butte swore it would be a good furnace but he's probably making a big commission to sell them cause there had never been any warranty or nothing. Wish I woulda bought a Lennox.



"Blows cold on start up"

1.0 rating
Very Unsatisfied

Had a new Ruud furnace installed in Dec. 2018, it replaced a furnace that was 18 years old (another brand).The installer said Ruud was a good furnace, wish I didn't listen to him. When the furnace calls for heat the burners kick on for 20-22 seconds and then the blower kicks on and blows cold air for about 30 seconds before heat comes out of the registers. I was told by Ruud's technical personnel that this is normal and nothing can be adjusted to stop it. Why would a furnace be set up to blow cold air before it heats up? There should be more time for the burners to heat up the heat exchanger before the blower kicks on. Ruud said that there is nothing they can do!! Do not buy a Ruud furnace

henry koch

Boardman, OH

"Piece of Crap"

1.0 rating
Very Unsatisfied

God. Awful unit. Bought in 2015. Coil rusted from. Inside out. Leaked freon. Got coil replaced. Now heater has broke down. 3 x this winter and. Last winter also. Save your money. Should have kept my old unit.

Frank j

Chalfont, PA

"10 years and running great!"

5.0 rating
Very Satisfied

We have had our dual system (meaning 2 furnaces with separate zones for upstairs and down) for over ten years and have not had a single issue. We do have them tuned up every fall but not a single repair has been needed. And we live in Wisconsin so you know it runs quite often in the months of October – April. I would definitely buy a RUUD again.

Carol C

Delafield, WI

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