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comment by veen
veen  ·  850 days ago  ·  link  ·    ·  parent  ·  post: Pubski: July 27, 2022

In just over a week we'll be the proud owner of our first home! Super excited. It's really fun, even though it's stressful. Boxes are a rising invasive species in our apartment at the moment. I have the luxury of taking 5 weeks PTO to move and take a quick break in southern France mountains. (My comp is such that I get 6 weeks per year and can buy up to 4 weeks extra for less than my day rate. I also learned today that I get two extra days PTO just for moving! It's generous, even for Europeans, as my SO is less lucky.)

Now that I'm one of those lucky millennials with a home ("in this economy?!") I get to bother myself with problems like the imminent gas crisis. I'm still on the fence whether I want to prep and buy heaters. The new variable price energy contract I have to take has rates that are 422% of what they were a year or two ago (3.38 instead of 0.80 euro / m3). I'm expecting them to rise to 5 or 6 euro. Ideally I'd renovate my house to be full electric and maximize solar. Getting any contractor now however is nearly impossible and they're all going for "fuck you we're busy" rates. Heat pumps have waitlists of over a year in some cases too. So this winter there's probably only room for low hanging fruit improvements.





goobster  ·  850 days ago  ·  link  ·  

I changed my home from oil heat to a heat pump system, and it is FANTASTIC. The heat pump system costs less to run than the FAN on the old oil-based system!! The savings are incredible.

And, added bonus, the heat pump is both a heating and cooling system. And since Seattle now regularly has weather over 90 degrees in the summer (this NEVER used to happen), the cool air is a real blessing.

If you can go for a heat pump, do it. No regrets here.

WanderingEng  ·  847 days ago  ·  link  ·  

What make and model did you get? I find it really hard to find details on heat pumps, especially whether they'll be effective in a climate that can get really cold. It seems like they're being marketed in the southern US but not northern where I am.

My furnace and A/C are both up for replacement. Now would be the time.

goobster  ·  845 days ago  ·  link  ·  

Instead of selecting the system I wanted, I selected the company I wanted to use. They came in, checked our needs, assessed the airflow and square footage of our house, and then they made the recommendations for the system to buy.

We wound up with the Daikin heat pump in the attic with ducting into the upstairs bedrooms and bathrooms, and then two split-mini units in the common areas (living room upstairs and rec room downstairs) to allow us specific zone controls across the bedrooms and living areas.

Heat pumps are not often used in extreme climates, simply because they use the ambient air temperature, and add to or subtract from it. There are various (unsourced) claims that heat pumps are only good for a 40-degree change from the ambient temp. So if it is -20 outside, the heat pump is only going to get you up to 20 degrees inside. Or if it 120 outside, it's only going to get you down to 80 indoors.

This is why I'd find a reputable local HVAC contractor and have them suggest the right solution for your location, home, and needs. There are a lot of variables that you can spend a long time learning... or just work with a pro who already knows this shit, and knows what works and what doesn't in your area. (And who has a good reputation for long-term service.)

kleinbl00  ·  845 days ago  ·  link  ·  

...and they might have old stock from a mis-order sitting in the warehouse that they can make fit.

We have been told by a number of HVAC companies that the furnace we have is twice the size we need, and that we paid basically salvage prices for it. On the plus side? It fuckin' moves some air. On the minus side? I know I need to change the filter when it stops oilcanning the plenum.

whump

WHUMP

uhsguy  ·  846 days ago  ·  link  ·  

Read some of the articles at https://www.energyvanguard.com/blog/ . A lot of the math details are missing but the concepts are well explained

uhsguy  ·  847 days ago  ·  link  ·  

We have a Lennox. It’s ok but not perfect. The pump has a tendency to freeze a lot of ice up on 40 degrees high humidity days and stops being effective around 20 degrees.

You need good wide large ducts on your pump or it won’t work well. That’s key the heat pump needs to circulate a lot of air as delta t is small so you need to push high volume to compensate.