You may hear it kick on and off as the temperature in the house fluctuates. Troubleshooting a Furnace That's Blowing Cool Air. The air is not chilled by air conditioning, but it creates a breeze that works by the windchill principle to cool you off. Many homeowners are led to believe that a bigger furnace is always the better option. When the furnace fan setting is ON, it means the fan is always circulating air throughout the home—even if there’s no heat coming from the furnace. 'burner' and blower still On). Switching fan from Auto to On, waiting, and then setting back to Auto DID turn the furnace and blower Off. We don’t just work here in the area, we also live here and are a part of the community. The fuel system, the burners, the fan and the ductwork. However, this setting uses more electricity to run, which can be a problem if you have an older furnace with an AC motor. This can be a good setting for those that want to periodically circulate air throughout the home but don’t want to run the fan 24-hours a day. Or will I end up killing myself and my family? With all these starts and stops, there’s also less even distribution of heat. If the air temperature at the thermostat is warmer than the set point showing in the LCD display, the air conditioner will start. Running the furnace fan all the time means there’s less stale air in the home and can also help regulate cool and warm spots. Getting your furnace going during cold weather is a high priority that should be tackled immediately, but it needn’t necessarily mean calling a maintenance specialist. Switches are located in 4 sections vertically, each having 4 switches. After the burners shut off the fan will continue to run for a while and then shut off. There is a switch in the furnace itself which claims it turns off the gas to the furnace. Pilot Light Is Out Believe it or not, but even in today’s modern time, most people still fail to set their thermostat correctly—and it’s one reason why a furnace releases cold air. In the summer time, you can set the fan to the on position to circulate cool air in the home. However, you don’t have to invest in a new furnace to get benefits of both settings. Take a look at your furnace flame to ensure it is blue in color. for furnace tips and advice. Pilot … If your fan is set to ON, it will run continuously, regardless of whether your furnace is heating or not. If the fan stays on after this period, then it starts pushing cold air into the house, which could account for the uneven temperature control. This works best if the cold air return of your furnace is located in a cool basement or other cool … Change filters. If your furnace keeps blowing cold air, you may notice that your air filter is too dirty. The fan is turned off about a minute after the desired temperature is reached. Fortunately, many issues can be pinpointed and, in some cases, even repaired yourself. Do this: Ensure your thermostat’s fan setting is set to AUTO, not ON. There are four main components of a furnace. “Auto” option––With this option, since there are more starts and stops, there will be more wear and tear on the furnace. Living in Canada, increased utility bills are inevitable during the long, harsh winters,... HAMCO Heating & Cooling Ltd. Running the furnace fan all the time means there’s less stale air in the home and can also help regulate cool and warm spots. when you set the thermostat to HEAT mode. The best way to know which furnace fan setting is right for your home and heating system is to ask the installation technician when they review your new furnace system. Once the furnace stops, the air is no longer being moved around, resulting in cold spots. If the furnace blower is having problems, though, changing its speed could make a difference in the furnace’s performance. Powered by idig Marketing When it’s cold outside, the furnace is often the most used appliance in the home. Furnace Mode: When cycled to Furnace, furnace operation is enabled. Setting Time Setpoint Temperature (Heat) Setpoint Temperature (Cool) Wake 6:00 a.m. < 70˚ F > 78˚ F Day 8:00 a.m. Setback at least 8˚ F Setup at least 7˚ F Evening 6:00 p.m. < 70˚ F > 78˚ F Sleep 10:00 p.m. 905-527-1049 Our business is as much about our personal reputation and the relationships we build with our customers and neighbours as it is about selling and servicing home comfort systems. 2. If this setting is selected, you should only feel warm air coming from vents and will notice that the fan cycles on and off throughout the day based on the temperature drop. I have a coleman GM9V furnace and I want to use the fan in it to cool my house. The main benefit of setting the thermostat to ‘Auto’ is that it will result in more energy efficient usage. If the air temperature at the Setback at least 8˚ F Setup at least 4˚ F Programmable Thermostat Settings If this does not correct the problem, call for furnace repair. A fan then blows the heated air through another set of ductwork, and finally through heat registers, to every room in the house. The furnace unit draws air into the unit and circulates it through the duct work to all areas of the home. If there is no air coming out of your vents, make sure that your furnace is getting energy. Here’s another possible DIY fix for your heater blowing cold air. Any other color could be a sign that there is something wrong with your heat source, in which case you need to bring in a professional to troubleshoot your problems. Some homeowners have a VENT option, which will turn the fan on for a certain amount of time every hour to circulate air. Pilot Light is Out. VENT Setting As a rule of thumb, your thermostat must be set to “heat”. There is no one right answer. If you have a smart thermostat with a schedule on it, the auto setting may mean you never have to touch your thermostat again. If I turn that off, and then tell my thermostat to heat the house to 90 will it kick on the fan, and have no heat? Tip: Avoid setting your fan to ON, it wastes money because it forces the fan motor to run constantly. On most high efficiency furnaces there are vent pipes that … However, this setting uses more electricity to run, which can be a problem if you have an older furnace with an AC motor. The auto setting on your furnace fan relies on your thermostat to determine when the fan needs to be running. A common misconception associated with thermostats is that a furnace works harder than normal to warm the space back to a comfortable temperature after the thermostat has been set back, resulting in little or no savings. People often have questions about the proper furnace fan setting for winter. ©2020 Copyright HAMCO, All Rights Reserved. Tomahawk, WI 54487, © 2021 BxB Media | Premier Heating & Cooling. A clogged furnace filter can cause a furnace to shut off. Other thermostat issues. Many people let it blow the warm air out without thinking of the internal mechanics. You can do this by turning your fan to the ON setting and seeing if the … Change the air filter. Dirty filters … … The Pilot Light is Out. Incorrect Thermostat Setting. Is your furnace not keeping up and not reaching the temperature you set it to? Lennox furnaces are quality units; however, similar to other furnaces, after some time, they can encounter their share of issues due to normal wear and tear or a lack of regular care and maintenance.When this occurs, you may notice that your furnace just doesn’t perform how it used to. A furnace that is too big will run quickly and heat up the air right next to the thermostat. A dirty air filter restricts airflow into your furnace. It is supposed to stay on for two to three minutes after the furnace shuts off in order to push the last of the warm air out into the house. Cool Mode: Use the On/Off Mode switch to cycle the thermostat to Cool Mode. Should the furnace fan always be ON—constantly circulating air? Dirty Filters. If your furnace fan is set to AUTO and is still running, then move on to the next section. What is the right temperature of process water? Unfortunately, this is simply not the truth, and it could be the reason that your furnace won’t reach the set temperature. It will not cool your home any faster and could result in excessive cooling and, therefore, unnecessary expense. When a furnace blows cold air, there may be an issue with the unit’s electronic control panel. The furnace blowing cold air, or there is no heat in the house. Make sure your fan is set to AUTO and not ON. The correct furnace fan setting will depend on the type of heating system you have and your indoor comfort preference. When we get calls asking about the furnace blowing cold air, it’s usually because of the ON setting; the air is room-temperature but can feel colder to people. Generally, the auto setting will start the furnace fan about half a minute after the burner is lit. we’re happy to answer any questions. Furnace filters. VC Two Stage Furnace Control DIP SWITCHES MUST ONLY BE ADJUSTED WHEN UTILIZING THE LEGACY TERMINAL BLOCK WITH A 24VAC NON COMFORTNET CONTROL. Relight the pilot light if you notice it is out. Turn off power to the furnace at its ON/OFF switch. Rooms have a cold air intake vent, which allows cool air to be sucked down into the furnace. Fan switch on Thermostat was correctly set on Auto. 200 Queen Street W. Hamilton, ON American Home Water and Air. 23439 North 35th Dr. #7, Glendale, AZ 85310 (602) 993-0083 Should it be set to AUTO so that the fan only turns on when there’s a call for heat? 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