this post was submitted on 12 Sep 2023
313 points (100.0% liked)

Technology

37800 readers
291 users here now

A nice place to discuss rumors, happenings, innovations, and challenges in the technology sphere. We also welcome discussions on the intersections of technology and society. If it’s technological news or discussion of technology, it probably belongs here.

Remember the overriding ethos on Beehaw: Be(e) Nice. Each user you encounter here is a person, and should be treated with kindness (even if they’re wrong, or use a Linux distro you don’t like). Personal attacks will not be tolerated.

Subcommunities on Beehaw:


This community's icon was made by Aaron Schneider, under the CC-BY-NC-SA 4.0 license.

founded 2 years ago
MODERATORS
you are viewing a single comment's thread
view the rest of the comments
[–] NotAnArdvark@lemmy.ca 16 points 1 year ago (5 children)

A sticking point I encountered - the drop in efficiency as the weather gets colder means you need a unit sized to heat your home on the coldest days you expect to encounter. So you need to buy a heat pump that's larger than you need for 98% of the year just so you don't freeze that other 2%. In addition to higher cost an oversized unit is less efficient because it's cycling more.

So this is where "heating strips" or "backup heating" come in, and then I get we've come full-circle.

[–] MstrDialUp@lemm.ee 14 points 1 year ago

I don't see how this is "full circle". In places where it does get that cold, most homes already have a form of heating for the house. Adding on a heat pump or, at least in my case in the Midwest, replacing the central AC unit with a heat pump just means that you're only kicking that original heating system on a few days out of the year. That's a massive reduction in use compared to being the only source of heat for half the year.

It's a problem that new construction homes would need to fix if they don't want an NG connection at all, but it's not unsolvable.

[–] schnokobaer@feddit.de 12 points 1 year ago (1 children)

You'd usually run two or more units in a cascade/multiplex when requiring large amounts of power rather than having one giant unit. Means you can turn off one or more units entirely for low heating demand.

[–] mxcory@lemmy.blahaj.zone 4 points 1 year ago

Also choosing a unit (or units) that use a speed controlled compressor will limit cycling as they can ramp for the actual load.

[–] paholg@lemm.ee 10 points 1 year ago

I think modern inverter units are not less efficient when oversized. They are able to run at varying levels rather than cycling.

Those "heating strips" are only used a few weeks every year in my case.

[–] GiM@feddit.de 1 points 1 year ago

The optimal solution is to add a small heatpump in addition to a gas heating