There are several reasons why occupancy sensor switches are a great upgrade to traditional light switches.  They are convenient, energy efficient, and can save you money, to name a few.  However, some homeowners find it difficult to justify the initial cost of an occupancy sensor by the continual savings on electricity in a reasonable amount of time.  This is a valid concern for certain applications, and if the convenience isn’t worth paying for only one thing can help justify buying an occupancy sensor: a smaller price tag!

The  Decora PR180-1LW by Leviton is an affordable residential occupancy sensor that packs the same technology as comparable higher end motion sensor switches.  Just because it is less in cost does not mean it lacks in quality.  
This particular Leviton Decora occupancy sensor can be found for less than $16.  When mounted in a standard wall switch junction box it detects motion using passive infrared technology.  It’s field of view is a full 180 degrees along the wall it is mounted on and can see everything in front of it. 

A unique but practical way to cut back on energy consumption is to create an energy budget.  While this may seem inconvenient it is effective and parallels many other methods of cutting back.  We budget the way we spend money, we count calories, and manage our time the same way; so why not budget our energy consumption?

 Just as any of these other methods, a homeowner must first start with a plan, and then must acknowledge and commit to the plan everyday along with anyone else who lives in the home.  This may seem restricting and inconvenient, but often people don't realize how much energy they waste every day without even knowing it.

 For the sake of simplicity, let’s focus this sample energy budget on electricity.  Begin by assessing the amount of electricity consumed by larger electric appliances in your home.  Examples would be refrigerators, microwaves, electric ovens, and heating and cooling units.  This information is available on energy star labels that are provided with your
appliances.  If you do not have the information with your owner’s manual, try looking it up online at energysavers.gov.  The information we are looking for is energy consumption in watts per year.

There are many ways one can lower energy bills.  The key is identifying where a home is most energy inefficient.  This contributing factor could be one of many different deficiencies that are often relatable to a particular region's climate or how certain homes were built at a certain time.  For example, older homes were built with very little or no insulation, making the contributing factor for high energy bills the building envelope.  In older climates where heating systems are in demand for most of the year, well insulated windows walls and doors are often cost effective energy upgrades.  
 
While heating and cooling loads drive up energy costs there are other common energy deficiencies that are often overlooked. A DIY home energy audit can help you determine what these are.  While aspects of an energy audit relating to the building envelope are pretty straight forward, finding sources of inefficient lighting technology is a little less intuitive.  

In a recent post, we discussed how occupancy sensor switches can be combined with low voltage lighting in a harmonious union of energy efficiency.  Even without the occupancy sensor, low voltage lighting systems are very energy efficient.  It is important to recognize the benefits of using low voltage lighting where practical, and how building codes are starting to adopt energy efficiency initiatives that require low voltage lighting.

Often, low voltage circuits come with dimming switches to decrease energy consumption when full illumination is not required.  They also often include built-in timers with auto on and off functions; this is especially useful for outdoor landscaping lighting and low voltage security lighting.  These applications often demand electricity for longer periods of time compared to indoor artificial light.  For this reason, energy efficiency is important.  The built-in automatic timer will also add to the convenience of the lighting system.