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Save Cash By Understanding Your HVAC system, CFLs, And Your Climate

By: Art Gib

In today's "go green" world, it's easy to focus on making every little piece of your home energy efficient without considering the interactions between each piece and the energy efficiency of the entire home. A recent trend that exemplifies this point is the replacement of incandescent bulbs with compact fluorescent lamps (CFLs) in certain climates.

To understand why "high-efficiency" CFLs can actually be more detrimental than their "low-efficiency" incandescent brethren, we must first understand how your HVAC system (heating, ventilation, and air conditioning) interacts with both your climate and your lights.

The Big Picture
For cold climates:
* The additional heat given off by incandescent lights assists your heating system.
* Because the majority of the energy bill of a home in a cold climate comes from heating costs, the therm savings provided by incandescent bulbs offsets the additional KWH usage, resulting in a net savings on your energy bill.

For hot climates:
* The additional heat given off by incandescent lights makes your cooling system work harder.
* Replacing incandescent bulbs with CFLs greatly reduces the heat given off by your lights, resulting in savings on energy used by both lights and cooling.

HVAC and Climate
HVAC systems primarily accomplish two tasks: heating and cooling. As you would expect, homes in cold climates often have larger heating bills, while homes in hot climates have larger cooling bills. Many other factors will affect spending on heating and cooling, but the effect of climate on HVAC spending is fairly consistent.

HVAC and Lighting
Standard incandescent bulbs work by using electricity to heat a metal filament wire to a high temperature until it glows. Some of the heat used to make the coil glow radiates from the bulb, heating the area around it. This means that when your HVAC system is heating, it doesn't have to work as much to heat your home because your lights are providing some of the heat. The opposite applies to cooling: your HVAC system has to work harder to make up for the heat your lights are producing.

One reason CFLs are so efficient is they produce nearly no heat. This means your HVAC system receives no assistance or resistance from lighting when heating or cooling, respectively.

Therms vs. KWH
A therm is a unit of energy used to measure the heating provided by natural gas. A KWH (Kilowatt Hour) is a unit of energy representing electricity use over time. Your heating system likely uses natural gas (therms), while your lights are powered by electricity (KWH).

Though CFLs use less KWH than incandescent bulbs to produce the same amount of light, the additional heat provided by incandescent bulbs converts to a savings of therms that offsets the additional KWH usage.

Article Source: http://articles.tiptopweb.info

Find someone who specializes in the installation, services and maintenance of Heating, Air Conditioning and Refrigeration systems. We are state licensed (www.premier-mechanical-system.com) MD HVAC service contractor.

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Save Cash By Understanding Your HVAC system, CFLs, And Your Climate