If you've nailed that down, awesome!
Launch HN: Electric Air (YC W23) – Heat pump sold directly to homeowners
131–140 of 809 posts
Re: Launch HN: Electric Air (YC W23) – Heat pump sold directly to homeowners
#132Is this designed for new home builds or remodel/retrofits? There would be a major cost difference between demo/prepping a retrofit over a new build.
Re: Launch HN: Electric Air (YC W23) – Heat pump sold directly to homeowners
#133Earlier quoted context omitted.
In the context of heat pumps, a "backup heating strip" is a resistive heating element - electricity goes in, heat comes out just like an old electric heater. They're generally used during defrost cycles for the external air handler in cold weather, or to provide a temporary thermal boost when the heat pump is having performance trouble e.g. when the exterior temperature is near the bottom of the heat pump's operating…
Whole-house heating with resistive electric heating is going to get expensive, quickly. If they're serious about installing these in cold weather climates, they should have more information about the cut over temperature and the efficiency of the heat pumps at those temperatures. Just for context, my heat pumps cut over around 40-45 degrees to gas-based heat.
Re: Launch HN: Electric Air (YC W23) – Heat pump sold directly to homeowners
#134Earlier quoted context omitted.
Would your company be willing to provide an open-source local-first websocket-based integration with https://www.home-assistant.io/ or use the new Matter + Thread standard to provide it for everyone? If that's available, this would be my top choice as I'm actively shopping for all-electric heat pumps
It's something we'd definitely consider. Is the desire to have thermostat control via any third party? edit - The current plan has been Matter/thread Homekit + Google Home integration. We can expose at least temperature control via this to everyone.
Re: Launch HN: Electric Air (YC W23) – Heat pump sold directly to homeowners
#135Earlier quoted context omitted.
Fair point, I should do a better job of communicating the unit sizes. Heat pump capacity varies as a function of outdoor temps. A standard unit is rated at 47F but the sizes I'm showing are at 5F (cold climate conditions). Also for this price you get the air quality module which does HEPA, fresh air intake and humidification and a smart thermostat that's designed to fully optimize this heat pump system.
so what about places like Duluth, MN where it can be -20F ambient, then -40F to -50F with a windchill for several weeks of the year?
If every home that could use your heat pumps year-round installed one and used it exclusively, what's the upper bound on energy saved? If every home across the country installed one and used it primarily (whenever it was warm enough outside), what would be the energy savings? Not to disparage, I'm certain it's still significant, but I'm curious to quantify it.
Re: Launch HN: Electric Air (YC W23) – Heat pump sold directly to homeowners
#136Earlier quoted context omitted.
My thoughts too. Local heating/cooling should not be tied to the cloud period. If it doesn't use the normal wiring people already have it's a hard pass from me.
Maybe Europe market is ready for this. Considering how unstable the residential electrical and internet grid is in the US (instead of being dug in, into the ground all the cables are hanging between the trees and there are constant failures), relying on that AND on the cloud for an essential service is a no-go.
Re: Launch HN: Electric Air (YC W23) – Heat pump sold directly to homeowners
#137Typical medium unit at market place is only around 3K compared to your offering at 12k. Why is it so expensive https://www.homedepot.com/p/Pioneer-36-000-BTU-3-Ton-18-SEER...
Fair point, I should do a better job of communicating the unit sizes. Heat pump capacity varies as a function of outdoor temps. A standard unit is rated at 47F but the sizes I'm showing are at 5F (cold climate conditions). Also for this price you get the air quality module which does HEPA, fresh air intake and humidification and a smart thermostat that's designed to fully optimize this heat pump system.
You say 5f but I dont see any reference to that on your site.
Re: Launch HN: Electric Air (YC W23) – Heat pump sold directly to homeowners
#138Earlier quoted context omitted.
Would your company be willing to provide an open-source local-first websocket-based integration with https://www.home-assistant.io/ or use the new Matter + Thread standard to provide it for everyone? If that's available, this would be my top choice as I'm actively shopping for all-electric heat pumps
It's something we'd definitely consider. Is the desire to have thermostat control via any third party? edit - The current plan has been Matter/thread Homekit + Google Home integration. We can expose at least temperature control via this to everyone.
The important bit is to have an open API that can be connected to from the local network (or via Matter + Thread, etc), and via a cloud. Then anyone can develop a client. This also has benefits in UX: the latency to update is much lower than cloud based polling, since that's almost always rate limited.
The closer anything is to the bottom of the chart here, the better. When buying something as expensive as a heat pump, I wouldn't even consider something that isn't at least local polling:
https://www.home-assistant.io/blog/2016/02/12/classifying-th...
That being said, I'm not opposed to value add things via cloud services. Want to get the weather via a cloud service, even if that changes the schedule? Totally fine! But ultimate control must be local.
Re: Launch HN: Electric Air (YC W23) – Heat pump sold directly to homeowners
#139"Preorder". "Shipping Winter 2024". "While we don't have any physical prototypes at the moment, we have the industrial design and also largely understand how this will be built." No. You have to build it before you can sell it.