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Comment by masterj | Hacker News Reader

The software is certainly a concern, but I would also heavily emphasize the ability to get spare parts and service quickly. If your heat goes out in the middle of winter you don't want to wait weeks for spare parts, or be unable to get them at all if the company goes out of business.

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Yes, making spare parts and service work is super important. We'll likely set up regional distribution points for spare parts so anything critical can be easily sent next day.

What about labor? I'm pretty handy but there are definitely parts of my HVAC system where I'd be unable/unwilling to DIY it. I currently have a local HVAC contractor on-retainer for same-day emergency appointments - and honestly I don't think I'd be willing to consider anything less since my current heat pump is my exclusive source of heating in this house.

I'm in a temperate climate so there's little actual danger, but the idea of freezing/roasting my butt off for multiple days to wait for parts/labor is deeply unattractive.

Yeah, good question. The system is not meant to be DIY. The same contractor that does install also offers service. Logistics for replacement parts is important we will have quick, easy access for contractors.

Have you worked on creating a network of qualified contractors? In my region, there are lots of contractors who are little more than unreliable DIYers, especially in the mechanical space.

My hesitancy is in the ongoing service. I’ve looked into geo-coupled heat pumps but the lack of qualified contractors locally deterred me.

How would you ensure that spares are available in the event a model is discontinued or the company shuts down? It’s likely there will be few parts or trained techs in that case.

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