5 COMMON POINTS OF FAILURE IN CONVENTIONAL FURNACES

by forceda on September 24, 2020

The conventional furnace is usually designed in a way that it can remain functional for many years. At times, different parts of the furnace can fail and cause the furnace to not work properly. Sometimes the entire furnace can fail to function. This is very inconvenient especially during the winter season in Winnipeg when the temperatures are low. Consequently, it is helpful to know 5 common reasons that a furnace fails.

A very dirty blower fan assembly.Non Functional Blower Motor

The blower motor on the furnace is what is usually responsible for the circulation of the air. Because of its importance it needs to remain functional at all times so that the hot air can be circulated effectively. All the other components of the furnace might be working properly but the home will remain cold if the blower motor is not working. The most effective ways of dealing with this particular issue is checking the belts, bearings and fan motors on a regular basis. These kinds of inspections should be performed by a trained furnace repair technician. It is important to replace any component that might show signs of wearing out.

Ignition Failure

Having a failed ignition system is one of the most common furnace problems. When the ignition is damaged the furnace will not be able to produce any hot air. This is attributed to the fact that the entire furnace will fail to start since the burners will be off. It is relatively hard to repair the ignition system and this is why it is strongly advised to hire a professional for this type of maintenance. To avoid this particular problem it is advisable to check the ignition system at least once every year.

Failed Heat Exchanger

The heat exchanger is one of the most important components of a conventional furnace. This is attributed to the fact that it is the component that converts heat from the burner into heat that is circulated in the home. When the heat exchanger is not working, there will not be hot air available for circulation. The heat exchanger is quite expensive and some people prefer to buy an entirely new furnace. However, it is still possible to replace the one that is worn out provided one gets a good replacement.

Failed Gas Burners

The gas burners do not have any moving parts but they wear out naturally from use. The burners can also fail because of gas valves stopping working. Replacing these valves is a job for a qualified service technician.

A furnace filter full of dust. Clogged or Dirty Filters

The air filters are meant to ensure that the unwanted substances, such as dust, do not get into the other components of the furnace and as a result do not get circulated in the home. When the filters are clogged or dirty they also reduce the efficiency of the furnace. This makes it paramount to keep on checking the filters to make sure they are clean. One should check the filter at least once every two to three months. In cases where they are clogged or dirty one can just replace them with new ones quickly and easily by following their furnace’s instruction manual.

Identifying 5 common furnace problems enables homeowners to be able to avoid these problems and as a result keep their furnaces functional and running efficiently at all times.

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Importance of Indoor Air Quality

by forceda on May 14, 2020

Respiratory ailments, often attributed to poor indoor air quality, represent the third largest cause of death in the U.S., ranking only behind heart disease and cancer, according to the American Medical Association. The Environmental Protection Agency has said that indoor air is often 7-10 times poorer than outdoor air quality.

Airborne Particles

Airborne particles are divided into two classifications – coarse, or those particles larger than 2.5 micron in diameter, and fine – those particles 2.5 micron or less in diameter. For reference purposes, a micron is 1/25,000th of an inch in diameter! It is the fine particles, 2.5 micron or smaller, that our natural defense systems cannot eliminate. Individuals with health problems, such as allergies or asthma, need to be protected from poor indoor air quality, as do certain other groups such as the elderly or the very young, who may have compromised or underdeveloped respiratory systems. Problems with indoor air quality go beyond health related issues – productivity, absenteeism, product integrity and even one’s sense of well-being may be adversely affected by poor air quality.

There are three basic approaches to improving indoor air quality

You can (1) control or eliminate the source of pollutant, (2) dilute the contaminant, usually through ventilation, or (3) remove the contaminant from the air by filtration. You can’t always reduce or eliminate the air contaminant source. Ventilation can be a good approach, but the source of contaminant may be in the outside air itself. This is especially true if your home is located near busy roadways. Also, ventilation can raise the cost of conditioning the air, since you may be required to heat or cool more air than before. When control and vventilation are not practical, filtration becomes an important option.

Filtration of sub-micron particles is not always easy. Most air filters are not designed to remove the fine particles from the air stream. The filters that come standard with a house furnace, or even commercial heating and air conditioning equipment, are not efficient at the removal of the fine particles. In fact, they are designed to protect the equipment from the larger particles, and do nothing at all to protect occupants.

When you need to remove harmful fine particles from the air, make sure you select a filter or filtration device that is specifically tested for its ability to remove very small particles. Some air filtration products state high efficiencies, but are really stating the capacity for holding dirt according to a percentage of total weight. This does not guarantee you will be able to filter out a corresponding high percentage of the fine particles. In a given sample of indoor air, about 98.5% of the number of particles present will be 1 micron or smaller in diameter. If you need to remove sub-micron particles, make sure the product you are evaluating has been tested specifically for its ability to remove particles in the 2.5 micron range and smaller.

Poor IAQ is expensive

Poor indoor air quality can negatively impact your heating and cooling system performance and add to the cost of running your system.According to the US EPA, a buildup of .042 (1/20) inches of dirt on the indoor cooling coil can result in a decrease in efficiency of of up to 21%.

There are three basic types of filtration methods in use today:

altPassive filters use a fibrous filtering material. They can range from very inefficient to highly efficient HEPA filters. Generally, the cheaper they are and the less air resistance they have, the less effective they are. The higher the air resistance, the more energy is required to overcome the airflow resistance, contributing to higher energy costs to operate. If a passive filter is too restrictive, it can cause damage to mechanical equipment.

Electronic, corona discharge filters electrically charge particles passing through them, then attract the particles to a series of grounded collector plates where the dirt accumulates. The collector is then removed for cleaning. Unlike passive filters that become more efficient as they load, corona discharge devices tend to become less efficient as they load, especially if the cleaning regimen is not maintained properly. When they become dirty, arcing may occur which can cause the production of ozone, which the EPA has identified as being harmful to health.

altActive electronic, polarized media filters, such as Dynamic, represent the third major group of air filtration devices. This newer technology uses an electrical charge (safe, 24 volt current in the case of Dynamic) to establish a polarized field. Airborne particles pass through the field and adhere to the media. Like a passive filter, polarized media filters increase in efficiency as they load. Designed for use primarily in recirculating systems, polarized media filters can provide very high efficiency with a static pressure drop much lower than passive filters claiming a similar efficiency. This may lead to a decrease in energy consumption. Unlike corona discharge devices, the Dynamic cannot produce ozone, and maintenance is easy with periodic replacement of a disposable media.

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