Update:
I've had a chance to chat with John, the initial technician that performed the actual installation of the humidifier and he remembers the call quite well - he also remembers you personally requesting the humidifier be hooked up to the hot side - you had been very clear about how you wanted your humidifier hooked up and we complied with your wishes. Of course, we're always happy to send technicians back at no charge to verify that the work was done as it should be, even if it's to alter something no more than personal preference.
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Hi there Levi, I'm sorry to hear that you were unsatisfied, especially after giving you a courtesy refund last year when you had your initial concern. The next time we heard from you was this past Friday when you had called with the concern about the connection of the humidifier. Of course we immediately booked a follow up appointment for Monday with a senior HVAC technician and were happy to send out a technician to get that switched over, although having it hooked up to the hot water is not actually incorrect or controversial - its more of a preference and there are differing opinions, like many things - the humidifier actually works more efficiently with the warm water connection and does in fact provide humidity for your very dry house. Either way, due to your displeasure we provided a complimentary humidifier pad for your troubles.
At the end of the day I do feel that we've done everything we could to satisfy your concerns, even so much as giving you a courtesy refund on a non emergency that was quoted up front and with ample time to make a decision (and to do necessary research before having us do the work) but feel free to call us again if you'd like to discuss things further, we're always happy to chat!