mmaurizi's comments

mmaurizi | 11 months ago | on: The Frontend Treadmill

Design shouldn't be part of front end engineering - there is a reason there is a separate role for that, designer.

mmaurizi | 2 years ago | on: Hertz to sell 20k EVs in shift back to gas-powered cars

They work with standard power outlets, just very slowly. Our Hyundai gets 50 miles of range every 24 hours its plugged in at home.

Mostly I charge at work not at home, which uses 240v power (think an electric dryer), and that can charge the car fully in 8-10 hours.

mmaurizi | 2 years ago | on: Heat pumps, more than you wanted to know (2023)

The piece you're missing, beyond just "gas is cheap", is that increasing the heating capacity of a heat pump costs lots of money when installing it, whereas increasing the capacity of a gas boiler isn't much more expensive during installation, but costs loads more when running it.

So technically it would be possible to install a heat pump with the same capacity as the existing gas boiler, but it would costs a ton more and it would all be upfront.

mmaurizi | 2 years ago | on: Heat pumps can't take the cold? Nordics debunk the myth

If you need a lot more heat than cooling, you can't just get a larger system, you have to also go from single-stage to 2/multi stage or inverter-based, so that you can scale down in the summer so you don't cool too quickly and not dehumidify enough.

mmaurizi | 2 years ago | on: Heat pumps show how hard decarbonisation will be

I did this recently when replacing our failed central AC, it was an extra $500 over the AC. It’s tied into the existing natural gas furnace.

The main issue is your basic 14 SEER heat pump needs larger capacity to be able to be the sole heating source than it does for just AC, so in my case in the northeast US the heat pump can’t economically be run in Winter, just spring/fall & probably can’t keep up with the coldest winter days at all. But it does provide flexibility if gas prices spike in the future, and saves a very small amount of money per year (< $100)

If you’re the type to buy a high efficiency system going with a heat pump over central AC seems like it’s maybe more worth it from a return on investment standpoint

mmaurizi | 2 years ago | on: I’m ready to trade in my electric car

Financially for swapping to make sense, I think you need to be renting the batteries from the swapping company, not own them as part of the car purchase.

I think Renault used to do something like that?

mmaurizi | 2 years ago | on: EU countries approve 2035 phaseout of CO2-emitting cars

I would think an electric car would pair really well with off-grid solar - you can charge the car with excess energy during the day, and pull from the cars battery for power at night.

Sure it's a big power draw, but you can significantly downsize your battery system, which is presumably also a big power draw.

Or do you not have a big battery system now, and only run the high energy appliances like the oven during the day when you have lots of power?

mmaurizi | 3 years ago | on: Amazon will require employees return to the office 3 days a week

I'm fine with choice but I'd like to see it on a team-by-team basis. As someone who likes working in person with other folks at least some of the time, that doesn't really happen in practice if everyone can decide to work from home whenever they want on any given day.
page 1