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How the Daywatcher can save you thousands of dollars each year.
By using the Daywatcher Degree Day System to measure your degree day information, you will be able to save thousands of $$$ per year.
How is this possible? To answer that, you first have to look at how the High-Low method works (and how our method is more accurate).
The High-Low method explained
The High-Low method works by using a 24-hour period's high and low temperatures to calculate degree days. For example, let's say a day's high temperature is 80.1° and its low temperature is 52°.
To calculate the degree days, you take the average of the high and low temperatures, and subtract it from 65:
(80.1° + 52°) / 2 = 66.05°
65° - 66.05° = -1.05
- Heating Degree Days - 0.00
But is this really an accurate way to measure degree days?
Johnson Degree Day's method
Instead of using this traditional approach, the Daywatcher collects 2,880 datapoints per day. This method tells you exactly what has happened in each 24-hour period.
Using the same information as the example above, we have expanded the data to show the temperature hour-by-hour (as indicated by the blue line). The grey line indicates the baseline of 65° (as was also used in the High-Low method).
The shaded area is used to calculate the actual degree days. As you can see, it's quite different than what the High-Low method calculated:
- Heating Degree Days - 3.89
How the High-Low method costs you money
Even though the difference between the High-Low and Johnson Degree Day methods is only a few degree days in a 24-hour period, think about how that small error can build up over time.
A small difference can build to a very large one in a matter of a week, a month, a season and especially a year.
Without an accurate picture of what's really happening, you could be throwing away thousands of dollars in a year. The potential savings from using the Daywatcher could pay for its cost in a matter of weeks.