> Suspicions aroused, I clicked on the “Document History” button in the top right and saw a clean history of empty document – and then wham – fully-formed plan, as if it had just spilled out of someone’s brain, straight onto the screen, ready to share.

This isn't always a great indicator.

I can't stand Google Docs as an interface to write with, so use VIM and the copy/paste the completed document into it.

I just wrote a big thread yesterday responding to someone with similar concerns to yours (https://bsky.app/profile/shreyassudhakar.com/post/3m3w3nra2h...). Copying it here if it's helpful to other folks. FWIW, the challenges you are facing seem to be grounded in bad design and application, which happens more than it should and really sucks. We need to move the bar much higher for the contractors installing heat pumps. Here's what I wrote on that thread:

This is why contractor & homeowner education are so so so important to get this energy transition right! I always hate to see reviews like this from folks that have installed a heat pump.

It’s almost always a combo of poorly communicated expectations & installer issues.

A few thoughts…

1) “Air doesn’t come out hot” is a common complaint. It’s by design! You don’t need scalding hot air to have a comfortable space. If you’re targeting a 70 degree setpoint, even 80 degree air will get you there eventually. Heat pumps work best when you let them run - they soak the space with heat.

Your furniture, walls, floors all equalize in temp and radiate heat. A totally different form of comfort than standing in front of a vent that blows hot air at you for 5 minutes and then shuts off!

2) AC doesn’t reduce humidity as well. Unfortunately, this is a classic problem with oversized heat pumps. The key to dehumidification is runtime. A well sized system will run for longer, which will pull the humidity out of the space. If the system is too big, it’ll cycle on and off & not dehumidify.

Your contractor should be do load sizing calculations to determine the size of your heat pump, not using rules of thumb or matching the size of the existing equipment! The very best contractors use performance based load calcs, where they look at your past energy bills to size your new system.

3) Supplemental heat runs a lot - this SUCKS. Electric resistance heat is really expensive to run. It really should be something that comes on for emergencies, if ever. Definitely not regularly.

Many contractors set the temperature where the supplemental heat kicks on way too high. You could be running the heat pump (which is way more efficient) to a much lower temperature, but it’ll switch to expensive aux heat instead. Fortunately, the fix to this is simple - just a thermostat setting.

In other cases, they’ll install a cheaper mild climate heat pump in a truly cold climate. This might save money up front, but it’ll kill you in operating costs when you’re paying 4x as much as you could be in the middle of winter to heat your home. The lowest bid could cost you in the long run!

PS - this homeowner later chimed in that swapping the thermostat helped reduce their electricity bill roughly $30/month! A lot of heat pump issues actually boil down to a poorly configured system. Choosing the right contractor is probably the single most important decision you'll make when you get a heat pump installed.

There's a spectrum between "useless" and "good enough", for most people it acts more of an awareness tool and for that it does the job well.

Good advice on the CO2 monitor. Cheap and surprisingly effective. I haven't considered the VOC--any recommendations?

As an aside, I open up my window, but sometimes smokers decide to take a break outside and...well. Other times, I have neighbors barbecuing.

If I don't shut the windows quickly I've just replaced stale and somewhat harmful air with oxygenated and definitely harmful air.

I feel like advances in manufacturing and materials science have really made some massive strides in the past 10 years or so—my sub-2lb 2p tent feels just as durable as my 7lb backpacking tent from the late 90s did.

Particularly when traveling, I don't enjoy the taste of tap water. Filtered or (factory filtered then) bottled... and I'm not alone in that viewpoint.