What to do if your Ruud Furnace is Not Working

If your Ruud furnace is not working, this can be a very worrying time. It can feel like a lot to deal with, especially if you are unaccustomed to these issues. Fortunately, there are steps you can take to get your Ruud furnace back up and running again as quickly and painlessly as possible. The first step is identifying the problem. Multiple things could go wrong with a furnace, from the thermostat being broken to the burner not lighting properly or something more serious such as carbon monoxide leaking from within it. Once you have identified which part of the Ruud furnace is broken and needs fixing, there are some steps you can follow to get it fixed promptly and efficiently.

Check the thermostat

A broken thermostat can be the cause of many issues with a furnace, and will often pose a problem when trying to turn it on. If the thermostat is broken, it may not give any indication as to the furnace’s current state. This can be an even bigger problem with a Ruud furnace, as it will not have an auxiliary start as other furnaces do. If the Ruud furnace does not have a current running through the thermostat, it will not be able to turn on, leading to a broken furnace. If this is the issue with your Ruud furnace, one option is to replace the thermostat completely. If that is not an option, a technician may be able to shift the thermostat a small amount so that it can turn on.

Check the Burner

If the Ruud furnace is not lighting as it should, there could be a problem with the burner. A Ruud furnace has a pilot light, which is essentially a miniature burner that lights and then ignites the larger burner that runs the furnace. If the pilot light is not igniting or lasting long enough, the burner will not be able to produce the heat necessary to run the furnace. If the burner is not the issue, there may have been an obstruction in the gas line that is preventing the burner from lighting properly. If this is the case, your best course of action is to call a Ruud furnace repair professional as soon as possible to have the obstruction removed.

Check for Carbon Monoxide Leaks

This one is pretty straightforward. If you’re not sure if there are carbon monoxide leaks from your Ruud furnace, there are easy ways to check for them. You can use CO Detectors, or you can use a simple piece of paper. Place the paper near any areas of your home that the furnace vents through and check it after a few minutes. If the paper turns black or has a sooty appearance, there is likely a CO leak in the area. If this is the case, the best thing to do is to shut off the furnace, open a window, and get out of the house until the issue is resolved.

Check the Filters and Vents

If your Ruud furnace is not heating as it should be, the filters and vents may need to be cleaned. The filters help to keep the air in your home free from dust and debris, which can both be harmful to your health. The vents are used to push the heated air out of your home and into the surrounding area. These two parts of the furnace are easily cleaned and should be checked regularly so that the air in your home stays clean and fresh. If these parts are clogged or full of debris, it can cause the furnace to work much harder than it needs to and can lead to other issues further down the line.

Call a Repairman

If none of the above issues seem to be the problem with your Ruud furnace, the best idea is to call a professional repairman. They will be able to inspect your furnace and let you know what the problem is, as well as give you an estimate of how much it will cost to repair it. You should always call a Ruud furnace repairman as soon as you notice a problem as waiting can lead to bigger and more expensive issues further down the line.


A furnace is a major item in any home and can pose a significant problem if it is not working properly. Fortunately, there are ways to identify the problem and fix the issue quickly and easily. The best thing to do if you notice a problem with your Ruud furnace is to identify what that problem is and then take steps to fix it as quickly as possible.