KelTech Mechanical Contractors
 

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Welcome to the KelTech Contractors web site! This has been created to help the customer better understand air conditioning systems before a commitment is made. I have tried to include all of the questions that clients usually have. Also included are diffrent alternatives to traditional central air-conditioning for those difficult to cool houses.




I will begin this informative web page with a brief history of KelTech Contractors. The company began as Kell's Refrigeration and Appliances. It was started in 1970 by Joseph Kilkelly. Back then the primary focus was on domestic appliances and refrigeration systems.
But because of demand for other services, the company expanded to include commercial refrigeration systems and central air conditioning systems.

In the 1990's, Joseph retired and left Kell's to his eldest son Robert. Robert, having just recently moved back from California and working in the HVAC field,noticed that central air-conditioning was really becoming mainstream in homes in the Northeast. In California, central air-conditioning was in almost every home and apartment building. If you have ever experienced California weather,you know that central air-conditioning is better suited here in Boston rather then in California. This may seem like an odd statement to make, but central air conditioning is designed to control humidity. Every Bostonian knows about humidity during the sweltering summer months. So the decision was made that central air conditioning installation and service would be the companies specialty. To make it official the name was changed to KelTech Contractors. Since the change business has expanded because of out attention to detail and customer satisfaction. Please feel free to ask for a printed list of references.



Most central air conditioners are called "split systems" because there is an outdoor unit (called a condenser) and an indoor unit (an evaporator coil). The job of the air conditioner is to transport heat from one of these units to the other. In the summer, for example, the system extracts heat from indoor air and transfers it outside, leaving cooled indoor air to be recirculated through your ducts by a fan.
A substance called a refrigerant carries the heat from one area to another. Basically, here's how it works:

The compressor in your outdoor unit will change the gaseous refrigerant into a high temperature, high-pressure gas. As that gas flows through the outdoor coil, it loses heat. That makes the refrigerant condense into a high temperature, high pressure liquid that flows through copper tubing into the evaporator coil located in your fan coil unit or attached to your furnace. At that point, the liquid refrigerant is allowed to expand, turning the liquid refrigerant into a low temperature, low pressure gas. The gas then absorbs heat from the air circulating in your home's ductwork, leaving it full of cooler air to be distributed throughout the house. Meanwhile, the low temperature, low pressure refrigerant gas returns to the compressor to begin the cycle all over again.

While your air conditioner cools the air, it also dehumidifies it. That's because warm air passing over the indoor evaporator coil cannot hold as much moisture as it carried at a higher temperature, before it was cooled. The extra moisture condenses on the outside of the coils and is carried away through a drain. The process is similar to what happens on a hot, humid day, when condensed moisture beads up on the outside of a glass of cold lemonade.




Central Air Conditioning certainly is not a new technology, but it something that every house in the United States will have someday. So why wait?

Installing central air conditioning in your home and business may not be as expensive or complicated as you may have expected. There are new advances that can provide every home or business with central air conditioning no matter what the type of building is or the lack of room. The new central air conditioning are not the systems of old. They are smaller, quieter and more efficient then ever.

* Increase the value of your home.
* Make the summers more enjoyable with central air.
* Removes more humidity then window units.
* Healthier breathing conditions.
* Cheaper then previous systems.
* Beautify your house by removing bulky noisy window air conditioning units.
The efficiency of central air conditioning systems is rated by a Seasonal Energy Efficiency Rating (SEER). SEER ratings typically range from 10 to 17, with the highest numbers indicating the most efficient units that offer the most energy savings year after year. Fortunately, great strides have been made in the last 10 years to increase the efficiency of new air conditioners and heat pumps.

The typical SEER rating of air conditioners manufactured before 1992 is about 6.0. In 1992, the government established the minimum cooling efficiency standard for units installed in new homes at 10. To be considered as high-efficiency units, air conditioners must have a SEER rating of at least 12. The SEER rating is usually shown on a yellow and black EnergyGuide sticker attached to the outside unit of the air conditioner.

Higher efficiency units usually cost more to purchase initially, but save money in the long run on operating costs.