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27 votes
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Danish engineering firm Danfoss and retailer Brugsforeningen For Als og Sundeved have created a supermarket designed to optimise energy flow to save operational costs and be climate-friendly
4 votes -
Cheaper ways to heat a log cabin workshop (UK)
Hello good and clever people of Tildes, I need some advice. With electricity the price it is, and my wife having a sizable workshop in the garden, I'm looking for ways to bring down the heating...
Hello good and clever people of Tildes, I need some advice.
With electricity the price it is, and my wife having a sizable workshop in the garden, I'm looking for ways to bring down the heating cost.
Her workshop is 5m x 4m x 2.2m, and the wood is 44cm thick. It's a chunky beast. She makes gifts and personalised items, so when she has the heatpresses and mug/tumbler press on the go, it gets toasty. If the sun comes out, also toasty. However, over night, it gets super chilled, almost to whatever temp is outside. To combat this I decided to use a Govee Electric Space Heater, 1500W with Thermostat, WiFi & Bluetooth. However, this barely does anything and the electric usage flies up.
What are good options here? The office is about 10 metres from my house. It's too far to extend the home central heating via plumbing, plus too much lagging. I don't want to spend a fortune, so any sensible options I'm willing to entertain. If we're talking a couple of thousand, it's off the menu.
Thanks for any help.
Dropping an edit with a link to the actual cabin: https://www.tigersheds.com/product/the-gamma-44mm-log-cabin/
It's not like a USA style log cabin, that's for sure!
Edit 2: Okay - wall insulation looks like the next thing to tackle before even thinking about heating it. Thanks folks.
13 votes -
Finland is building the world's largest heat pump – will provide enough heat for 30,000 homes, saving roughly 26,000 tonnes of CO2 emissions each year
21 votes -
Sweden has cut 80% of its net emissions since 1990 – while growing its economy twofold. How have they done it?
31 votes -
FrostyGoop malware attack cut off heat in Ukraine during winter
17 votes -
Should I go heat pump only?
Hi all, I am in the middle of taking bids with my local HVAC companies and am looking for someone to nudge me in one direction or the other. For background, I bought my house in western Michigan,...
Hi all,
I am in the middle of taking bids with my local HVAC companies and am looking for someone to nudge me in one direction or the other. For background, I bought my house in western Michigan, right off the lake Michigan coast near Grand Rapids, last Fall. My home inspection made it clear the AC would need work and I haven't started to feel the need for it until recently. I called an HVAC company out and when they said the unit was 25+ years old, I just told them to forget about even fixing it because it would be at least 10% of the cost of a new unit and still way less efficient.
So.
My natural gas furnace is also ~20 years old and the first HVAC guy said that if it broke down, it likely wouldn't pass a safety inspection. They said something about how the coils being dirty or positioned someway or something, I can't really recall 100% what the issue would be but the gist that I got was that when it breaks down, whether it be 1 year, 2 years, or 5 years, it won't be worth fixing or it will be unfixable. A new AC would be ~$6500 and a new furnace would be ~$7000.
So I started up the conversation towards installing a heat pump unit in instead of a standard AC unit. My initial thinking is that when the furnace goes, I have the back up ready to go instead. Now a heat pump unit is going to cost me around $2000 more. I don't think my plan will be to ever install a replacement furnace. Depending on what the solar assessment says, evaluating both ground mounted and roof mounted solar, will tell me how worth it is to go that route and have discounted or free heating and cooling.
Where the calculus gets tricky for me is there is the Inflation Reduction Act which will give me a $2000 tax credit for a heat pump. But that will come with buying a more expensive, and efficient unit, and I believe I will also have to completely get rid of the furnace I currently have since the total home system has to meet the efficiency standard. In addition, last month I replaced my fuse box with a 200 amp panel and if I meet the requirements to get the $2000 tax credit, I would also get $600 tax credit for the panel since I can tie them together.
All in all, I am looking at getting a more efficient unit for roughly the same price as the less efficient unit but without the natural gas furnace as either main heating, or back up heating. My hesitation is that natural gas is so cheap that it doesn't make sense financially to go heat pump only unless I have renewable energy to pair with it. But maybe I am just overthinking it? And maybe I have gotten something wrong in my calculations?
Any advice or clarifications would be greatly appreciated. I have one more quote coming this Thursday and I hope to make a decision by Friday to get the work started
31 votes -
Google will send the waste heat from its data center in Hamina, Finland, to that community's district heating system
21 votes -
Question for those in colder climates: Pellet HVAC/boilers?
Hi, everyone. I'm on the hunt for opinions. I live in a colder climate in North America with no access to natural gas. Most heat their homes with propane or oil. Mine uses a very old 30+ year old...
Hi, everyone. I'm on the hunt for opinions. I live in a colder climate in North America with no access to natural gas. Most heat their homes with propane or oil. Mine uses a very old 30+ year old oil boiler. I've started to see more pellet boilers, but I'm a bit uncertain about them at the moment. I don't like burning fossil fuels to heat my home, but electric isn't really an option out here and it's hard to argue with the "tried and true" cast iron boiler with the BTU per gallon oil offers. On the other hand, my local government is practically throwing money and/or attractive financing at people to switch.
I'm curious if anyone out there has made the switch to some kind of pellet-fed heating system from a fossil fuel system. If so, I'd love to hear what you think of them, be it good or bad.
15 votes -
B-17 Flying Fortress | Units of History
6 votes -
Industrial-scale thermal storage unit in Pornainen, southern Finland, will be the world's biggest sand battery when it comes online within a couple of years
23 votes -
State of emergency has been declared in Iceland after lava from a volcanic eruption damaged key hot water pipes
22 votes -
Efficiency asymmetry: Scientists report fundamental asymmetry between heating and cooling
17 votes -
The neglected clean heat we flush down the drains
37 votes -
Russia’s fabled war ally ‘General Frost’ turns on Moscow
16 votes -
Sweden's Aira, which offers subscription service at no upfront cost, has sights set on UK's growing heat pump market
14 votes -
Norway brought heat pumps in from the cold – device installed in two-thirds of households suggests switching to greener heating can be done
28 votes -
Norway is among the countries with the most heat pumps per capita, along with neighbouring Finland and Sweden
25 votes -
The case for brick thermal storage
13 votes -
Why homes often feel warmer than the thermostat suggests, and what to do about it
53 votes -
Germany's MAN Energy Solutions installs world's largest seawater CO2 heat pump for district heating at the port of Esbjerg, Denmark
7 votes -
Harnessing Iceland's geothermal energy for agriculture | Focus on Europe
2 votes -
How Iceland became a geothermal powerhouse
5 votes -
Malmö start-up Enjay believes its patented product is the first in the world to offer profitable energy recovery from polluted kitchen exhaust air
6 votes -
Mälarenergi has embarked on a project to fill caverns underneath Västerås, Sweden with hot water – warmth will be sent via heat exchangers to a district heating network
3 votes -
Micro datacenters begin trials as commercial heating units
19 votes -
Insulation only provides short-term reduction in household gas consumption
7 votes -
Helsinki is tapping an unexpected source of energy to heat its homes – cold water extracted from deep in the Baltic Sea
6 votes -
A new way of storing renewable energy is providing clean heat – the Vatajankoski power plant is home to the world's first commercial-scale sand battery
5 votes -
Energy crisis fuels rush for firewood sending prices skyrocketing
10 votes -
Climate change: 'Sand battery' could solve green energy's big problem
11 votes -
BlocPower wants to evict fossil fuels one building at a time... And replace them with greener alternatives
5 votes -
Electrify everything is slow
4 votes -
At Iceland's Blue Lagoon you can swim in power plant wastewater – here's a story about geothermal energy, cheap heat, and how to keep some ducks warm
9 votes -
Rethinking space heating
23 votes -
How Helsinki is using a big cash prize to find a sustainable solution to heating the city
4 votes -
Stronger than aluminum, a heavily altered wood cools passively
8 votes -
Heat your house with a water brake windmill
20 votes -
For the few who heat homes with coal, it's still king
6 votes