Goodman Furnace No Heat

Now that the cold season has come, you want to make sure that it’s nice and cozy in your home all the time. And if you haven’t already checked your heating furnace, you shouldn’t postpone it until it’s too late. But what happens if you wake up at 2am because it’s cold inside?

Several reasons could make your Goodman furnace not to heat, and not all of them are severe. Even if you may still have to call the professionals in the end, you should try to identify the cause until they get there. Some of the reasons occur more often than others, so the following situations could apply to you:

1.      Improper thermostat setting

You shouldn’t just jump to the conclusions that your furnace is broken when it doesn’t heat; why not start with an easy question like “who was the last person touching the thermostat?”

Begin with the simple things and see if which mode is the thermostat set on. Is it turned to auto or on? As long as the thermostat is set to on, your furnace won’t stop operating, even if it’s not giving any hot air.

Selecting the proper thermostat setting is an effortless solution for the furnace, not heating. Take a look at the thermostat to figure out if it’s set to AUTO or not. This way, the air will blow only when the thermostat goes below the selected temperature. When the thermostat is set to 74 degrees, your furnace should heat only when the temperature goes below 74 degrees.

A thermostat set to ON will make the fan run, no matter if it’s heating air or not. You may have set the thermostat to 74 degrees, but the heater will blow room temperature air as the fan was set to remain on.

Tip

Switch the thermostat mode to auto for fixing the issue.

Improper mode setting is a frequent cause for the thermostat to let the furnace not give hot air, but some other problems may occur too:

• The thermostat isn’t set to heat but is set on cold.
• The thermostat has somehow become detached from the wall. You should always take a look to ensure that the thermostat isn’t detached from the wall. Maybe a wire is disconnected, so the thermostat is no longer transmitting a call for heat to the furnace.
• The batteries of the thermostat are drained out. Batteries on thermostat need replacement even when they’re low as they may send the wrong data to the furnace.

2.      Dirty flame sensor

It’s common for the furnaces without a pilot light to feature a flame sensor for maintaining the burning the moment it begins. However, dirt and grime cover the sensors in time, blocking them from controlling the furnace flame. Therefore, the furnace burner will turn off, and your house gets no heat. Cleaning a dirty sensor and even replacing it if it’s broken will fix the problem.

You may carefully clean the sensor with some abrasive steel wool and light. If you don’t do well with technical projects, you should call the professionals.

3.      Clogged air filter

A clogged air filter can also make the furnace not the heat. Air filters should stop the dust and various particles not to get blown inside the house. However, they will get clogged in time, which makes the furnace work more intense and overheat. You shouldn’t expect an overheated furnace to generate hot air.

Make sure to change the air filter a couple of times (even four times) a year. When you don’t remember when you’ve replaced it the last time, and the furnace doesn’t heat, you should change the filter.

If you’re also thinking about adding another filter to the furnace, there are several options to check. Standard filters maintain the ducts and system clean, but they’re not reliable for improving air quality. Here are some thoughts on filters for your Goodman furnace:

• Standard filters will maintain the ducts clean but won’t clean the indoor air.
• Media milters help with particle and dust removal, even seven times better than regular filters.
• Pleated media filters are the best as they eliminate insecticide dust and even airborne viruses.

No matter your final choice, you should change the filters 3-4 months so that your furnace still heats on Christmas.

4.      Circuit board glitch

Even computerization is for the better most of the time, and it can also add more headaches to the customers at times. Modern furnaces come with a computerized control panel for working on the thermostat signals. However, they may develop a glitch, stopping the furnace from correctly act on demands.

It’s not a bad idea to check the control panel, turning the furnace power switch off. Give it a couple of minutes to observe if the control panel will be reset or not once you switch it back on. When the furnace still doesn’t heat, you should check with the professionals.

Loud noises coming from your furnace don’t make good news either, significantly if the furnace doesn’t heat, so don’t postpone servicing and professional repair. Sometimes, even the most skilled and experienced DIYers cannot fix the problems.

5.      Dusty oil or gas burner

Dirty oil or gas burner could also block your furnace from heating. A layer of dust will cover the burners after some time, blocking the oxygen supply that you need for lighting.

Call a professional to perform regular furnace maintenance so that the burners don’t become dusty. Should the burners be dusty and the furnace, not heat, it’s better that you call the professionals.