OK, so here’s the rub: I have seen that as far back as April of 2013 people have been asking for a selection of Gallons per Hour. How hard can that be? It is completely obvious that Rachio designed there system to water lawns with sprinklers and not to water a drip irrigation system. Their answer to the problem of inputting Gallons per hour is to convert it to Inches per Hour with the following formula:

PR = (96.25(A*B))/©

96.25 = constant that converts gallons per minute (GPM) to inches per hour. It is derived from 60 minutes per hour divided by 7.48 gallons per cubic foot. times 12 inches per foot.

A = #heads -or- #emitters

B = flow rate (GPM) per head -or- emitter

C = zone square footage

Now, I actually am an engineer and I can kind of understand this stuff. BUT what is this “C = zone square footage” stuff all about? In an drip emitter landscape, what doe is mater what the zone square footage is? I may have a 1000 square foot yard but only have one plant in the center of it being watered. Or more realistically, I may have a 1000 square foot yard with 20 plants but they certainly do not cover the whole yard. So why is the C term even there? And why should I have to convert in the first place. I thought that was what computers are really good at and that simple arithmetics should be something that could be implemented in, say, a minute or two?

Without being able to enter the number of emitters and the gallons per minute the rest of your software is completely useless. Even if I bother to run your calculations (which I have) you system spits out completely inadequate and inaccurate watering schedules because it still thinks it is watering a lawn.

So, come on Rachio, your customers have been asking you for three years now for Gallons per Hour and so far you have been ignoring them. When will you actually listen to them and give them what they have been asking for? You tell them that you care about what they think, but for the past three years, at least, you haven’t.