Viewing profile — cmui

I’m curious what’s the rank sort of items a typical apartment dweller would want to keep on backup - for me it would be WiFi router, phone charger, microwave, kettle and a couple k…

Very cool. You mention powering connected devices - is it feasible to push power back through the outlet to power parts of the home? Euro solar panels are doing this I believe.

You're right, heat pumps have been around for a while, but they're only at 15% market share across the whole US. The Southeast, for a few different reasons, has the highest market …

The Electric Air system can provide a lot of dehumidification. For your specific situation dedicated dehumidifiers are probably the right solution, unless you need a fair amount of…

My main worry for you would be clearance in front of the condenser. These are side discharging units and require 4ft clearance in front for the air exhaust stream. Rough foot print…

Very cool prototype. Fresh air is a bigger deal than people realize. Shoot me a note at the email in my bio, I'd love to connect.

You're right - hardware is tough, and the scope is large. But this is an important area to build better products, there are a lot of people passionate about this/want to work on th…

More than 2M per year - this article implies 8M combined natural gas and heat pump installs in US: https://www.canarymedia.com/articles/heat-pumps/chart-americ...

What's your preferred thermostat?

Yeah, its a good question. I think 'direct to homeowners' has generated some confusion that this is a DIY product. After a purchase we have one of our contractor partners perform t…

In the future we'll likely show the condenser more in context, a backyard or something similar. I don't know that much about thermoacoustic heat pumps. I do suspect they're less ef…

Heat pump water heaters are great, also a much simpler install than an HVAC system.

Only 17% of homes have heat pumps at the moment. 80M (though I believe its closer to 88M) homes in the US are single family detached homes. What region are you in? Local contractor…

It can be very regional, most of my specific discussions have been in the Northeast and the SF Bay Area. What area did you do this in?

Thanks!

Its an interesting idea. Install would be more expensive because you have to fit it nicely into the ceiling drywall and also snake refrigerant lines through the ceiling. Wall units…

Not a dumb question, you've hit on one of the best features of these systems. They act as a heater in the winter and as AC in the summer. Same system.

Thanks for your perspective. What do you think is needed to move the needle on heat pump adoption/ make them a more compelling product?

The size ratings are confusing. This is really a ~19kbtu unit at 5F. Most homeowners do not want a DIY solution, they want it professionally installed. And this system lacks air qu…

> By going direct to the homeowner you are targeting the venn diagram union of "people who are willing & able to do the work themselves" This is meant to be installed by a professi…

Indoor or outdoor coil, copper tube-and-fin or aluminum microchannel?

Thermostat operates as a standalone device, no internet connectivity required. If you connect it to wifi it receives demand response, weather and TOU signals to reduce your utility…

We could be more clear on that claim. Temp variation within a room - ducted variable speed equipment solves this well. Temp variation between rooms - either need zoned dampers, pro…

Thank you for pointing that out - just fixed it!

Yeah, definitely aware of this tech, and its often found in commercial applications. Probably overkill for residential stuff though, HEPA is already very good.