I would rather be disuaded from making a return because I misunderstood how to use a product and got put on the track to complete satisfaction , than to return it and have to start all over again with a different product that might be less suited than the original. What I don't have patience for anymore is to have to deal with someone who knows less than I do but is the person assigned to help me. If that's arrogant, so be it ;- )
So in the ideal world, the distributor (SH in this case) acknowledges that it doesn't have in-house expertise on a complicated, important, non-toy product, and refers the buyer to Someone Who Does Know (eg HAI). And the SWDK says "Lemme talk to your HVAC guy" -- the *other* SWDK -- who is put on track, the product properly configured, and everyone sings Kum Ba Yah - with an RMA, costly for everybody, averted.
For this to work, the manufacturer has to be able to provide a solution. And from all of what I've heard over the years about HAI, they do. (I'm a relative late-comer to all-in-one-panels having bought an Elk a couple of years ago and have no first-hand experience with HAI.) We've all had experiences where "call the manufacturer" is the beginninng of a run-around, but that doesn't appear to be the case here.
First I am glad that the question raised on this old thread was answered.
To clarify my point on the side topic, I don't think anyone disputes that having HAI involved is a bad thing. It is a good thing they note that it will be directed to HAI for support. They let you know up front without wasting your time talking to people who do not have the background on this. No problem there at all (in fact kudos for them to make that point clear).
What if (which was the example in the post that I responded to) you buy one model and needed another? Or found that you spoke to HAI and it would not work in your setup? HAI will refund your money and take the equipment? I think not (but if I am wrong...). The way it reads is essentially 'all sales final, RMA through HAI only for defective units', which is why I noted the solution is simple: buy elsewhere if you may need to do that. Frankly, I would assume there are not many cases where a thermostat needs to be returned, but buyer beware. If it is a concern, buy elsewhere. I do find that part very unusual (and my reference to several other retailers was to see if any other retailers had a similar caution/note).