Furthermore each of these facilities may encounter several types of guests. Believe it or not, the type of guest your property caters to will affect the achievable savings:

Overnight/Business:	30% - 40%
Vacationer:	40% - 50%
Wedding/Honeymoon:	35% - 45%
Short Stay/Weekender:	25% - 35%
Extended Stay/Corporate Residence:	35% - 45%	Data Currently Not Available

These figures were taken from real world testing that has been conducted in collaboration with hotel engineering departments across the United States and Overseas. In order to demonstrate effective savings potentials Energy Eye™ has installed metering in hotel rooms that actually compare the room against itself. We install dual metering so that we can count the difference in HVAC runtime both including Energy Eye™ System control and not including the effects of the control. By doing this we have eliminated discrepancies in typical "side-by-side" comparisons that can't account for user behavior and occupancies.

It is important to remember that these savings figures represent the run-time of the actual HVAC in the room. Hotel engineers are often mislead by the marketing of energy management systems when they are told that their property can save up to 50% of their total electric utility usage. In the case of a Limited Service type property with little else than rooms occupying square footage this may come close, but for most properties we expect that by cutting in room HVAC usage this will reduce the TOTAL electric consumption between 15% for full sized Resort properties up to 45% for Limited Service.

Actual Dollar Energy Savings

It is often difficult to quantify the actual effects of using guestroom energy management equipment in hotels because of the numerous outside variables that are simply beyond our control. These can include quantifiable variables such as load ratings, to much more elusive variables such as weather patterns, user behavior, HVAC system performance degredation due to age or maintenance etc... We have however done post-installation analysis using regression of hotel Utility consumption over the total property billing and isolating occupancy and weather degree day variables.

A good example would be that of this 81 Room Limited Service property with an above national average occupancy (65%+), in a mild (San Diego, CA USA) environment. The property utilises PTAC through-wall type heat pumps with 9,000 BTU rating. Their total utility bill ranges around the $4,000/month range and the majority of this usage comes from operating the PTAC units.

Percent KWh Saved (left) 1 Total Dollars Saved (right) 1

1 - August, September and October data not available do to hotel upgrade causing lapse in operation. Data collected San Diego, CA 2002-2003.

As we can see from the data the hotel saved an average of roughly 22% of their total electricity consumption or over $800 per month in expenses. This is, in fact, probably the most conservative case we could exemplify given the local climate of this property (where HVAC is almost never needed). Imagine how this could affect your properties value and performance!

Maximizing Energy Savings

While Guestroom Energy Management Systems like Energy Eye™ probably aren't the "end all" to your over-consumption of energy, we believe that this is the is the most effective means to control the largest "wasted" energy usage for what is practically the least investment. All that means is, your ROI will be very impressive for this type of equipment. Of course we also encourage the discovery of additional energy saving measures such as: