My forced hot air furnace turns on and off every 10 minutes, (on for 10, off for 10) in order to maintain the temperature, but driving up by gas bills. Yet if I manually turn the thermostat on for 10, and off for 25, I can still maintain the same temp. I am not actually losing heat as fast as I add it. So I'm thinking I have a faulty thermostat??? Also it may be the location of it - it is at the base of the staircase leading upstairs and while that is an inside wall, it is the same wall as the staircase leading up from the basement which is not heated. Could this be wreaking havoc with "perceived" temperature swings sensed by the thermostat? Help!
There are a few things that can cause this problem. The most common is the hole behind the thermostat for the wiring was not covered up when the thermostat was installed. The thermostat will sense the air in the wall space or the basement if it is open to the back of the wall supporting the thermostat. Turn off the power to the air conditioner if attached and the furnace, remove the thermostat from the wall and seal up the wiring hole with duct tape. Insure the thermostat is mounted level when reinstalled. The thermostat should be mounted to sense the return air to the furnace, if the stair well leads upstairs, warm air rises, so keep the upstairs close to the same temperature as down stairs or move the thermostat and install a door to block air movement to the upstairs. There is a heat anticipator on the thermostat, the setting for it is in the installation manuel. For most gas furnaces it is .8. It is very easy to short out the thermostat when making this adjustment, so always have the power off.
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Dec 15, 2013 - Uploaded by shannon122005
My furnace shuts off before reaching the set temperature on the... and then i turn switch back on , the furnace running about 4-5 hours and then ...
Dec 1, 2009 - 30 posts - 18 authors
[HVAC] My gas furnace cycles off every 6 minutes. ... This cycle will repeat a fewtimes, then usually after the second or third time everything ... How long is it after the big blower cuts on that the gas shuts off? ... Turn the furnace on, once the inducer blower is running you should read 0 volts (switch is closed).
As your gas furnace or other type of furnace heats the air in your house it will be forcing the moisture out of the air. To maintain the proper comfort and to keep things from cracking from lack of moisture you need to install a furnace humidifier.
Furnace humidifiers offer many health benefits. They help to relieve the irritation of breathing dry air. More humidity in the air has shown in studies to lead to healthier lungs and fewer illnesses.To many people, another very important benefit of installing a good furnace humidifier is that the addition of more humidity to the space during cold-weather months allows for you to lower your temperature setting on the thermostat while still maintaining comfort.
If you are already looking for a furnace humidifier, you are probably familiar with many of the great benefits of installing one in your home or office. A good furnace humidifier will also help alleviate some symptoms associated with asthma or allergies as well. A good furnace humidifier can also help you to prevent cracks in your precious wood. Another great benefit of installing a furnace humidifier is that it will help eliminate static electricity.
The three most common types of humidifier are bypass furnace humidifiers, the power spray furnace humidifiers, and also steam furnace humidifiers.The bypass humidifier seems to be the most common furnace humidifier is the bypass humidifier.
All of the different types of humidifiers need to have a lot of maintenance. On the pad type humidifiers you need to clean or change to pads often. On spray type humidifiers the nozzle and pad will need to be changed or cleaned yearly. On the best types of humidifier is the steam furnace humidifier. They produce the most humidity but are very expensive and do require more regular maintenance and upkeep then the other types of humidifier.
A humidifier can be a fantastic addition to your hot air heating system. The type of humidifier that you need to have will often be dependent on the size of the space you are planning to serve. Also, do you need precise control or not? Overall a humidifier is often a must have item if you are heating with hot air heat. Dry air is not any fun and causes many problems. Put up with the time you will need to invest in cleaning and servicing your humidifier. Having the proper amount of moisture in your house will pay you back many times over.
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Maintaining the lowest acceptable setting and leaving it at that temperature is the most economical way to run the unit. If the space is going to be unoccupied for an extended time (several hours), lower temperatures are okay. This minimizes the need to burst the heat to warm the space quicker. As I understand your unit, it minimizes electrical & gas consumption by basing the need on the temperature difference of actual space temperature and setpoint. The larger the gap, the more power and gas is consumed.
In summary, when the space is occupied, maintain a consistent temperature setting. When the space is unoccupied, maintain a lower setpoint.
you might want to check the filter, if the filter is restricting the airflow the furnace will over heat and it will shut down. if you turn it off and on it will reset it and it will try again. Pull the filter out half way and try that, if it runs fine then clean the filter or get a less restrictive one.
Sounds like the flame sensor. But it could be the thermostat. Is the furnace standing pilot or electronic spark or hot surface ignition. I would start by checking thermostat. Turn power off to furnace take thermostat off wall and take wires marked r & w and connect them together. Turn power back on if furnace works then change out thermostat.Most eclectronic ignition Furnaces have a flam sensor, You could take flame sensor out and clean it up with steel wool or wire brush. If you need anymore help just reply back .
Is this furnace standing pilot or electronic ignition. If standing pilot i would check furnace filter then the thermastat. To test themostat first turn power off to furnace. Take thermostat off wall and take wires labled R & W and connect them together. If you have electronic ignition I would start with cleaning the flame sensor with steel wool or wire brush.If you have and more questions i will be glad to help.
It sounds like you may have issues with the furnace. A qualified professional can go over the system and the house to let you know if the system and unit are properly sized. The poor performance of a furnace can be a sign of carbon buildup in the furnace.
Good luck, hope this helps.