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this post was submitted on 23 Jun 2024
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Because we live in Canada and our design day heating energy requirement is typically far greater than our design day cooling energy requirement. Add in the fact that best pump efficiency falls way off at design day heating (to half or less of design day cooling) and you end up with equipment that may be able to do heating and cooling but is way oversized for cooling, so lots of people opt to save capital (and potentially maintenance) money by relying on gas heat for the coldest days.
Because water heating with heat pumps is currently garbage on the residential scale... the heat pump capacity on residential water heaters is quit low, which is fine for keeping the tank warm but not for dealing with a half decent draw, so they all include full electric capacity which means you need the service size and associated operating costs to go along with it. Commercial heat pump water heating isn't much better, it may get better once CO2 or propane take off as a refrigerant here.
Because more and more buildings are putting in emergency generators, which require either natural gas, propane or fuel oil. One of those is significantly easisr to install and maintain than the other two.
Although this might be accurate, what would be the true cost of gas if you removed all the subsidies and added the cost of fossil fueled warming from the continued GHG release? What will be the cost of gas if climate change really starts to pop and we undergo radically accelerated decarbonization? What is the projected cost of renewables + batteries + electric heating in 5, 10 or 20 years?
These are more relevant details regarding the building of infa that should be built to last, and is costed to last, for several decades.
I just had to buy a new gas furnace and air conditioner, so, with my mind on global warming, I asked the furnace guy what it would cost to put in a heat pump. He said he has put in quite a few, but the costs have gone way up. He also said that in our climate I would need an electric back-up furnace for winter because a heat pump loses efficiency quickly at temps below -15C. The cost was going to be around $30,000, compared to $15,000 for the new gas furnace and AC. Also, electricity in Ontario is an incredibly expensive way to heat, so that would be a big extra monthly cost in the winter. An in-ground geothermal system would be about $65,000, he said.
It isn't hard to see why gas is still popular, and that it will continue to be far into the future unless we undertake some kind of national project to replace our fossil fuel infrastructure with nuclear for the needed electricity and then convert our cars and homes over to full electric.
Did you asking about getting a heat pump to run the AC coil above the gas furnace instead of just a regular outdoor AC unit? The cost difference in hardware is only a few hundred dollars at most (for same sized unit, maybe $500-$700 if you are going up a size to hear for longer into the winter), installation cost should be the same and while it doesn't eliminate gas burining you can reduce it by probably 50% - 70%.
This is basically what I'm in the process if doing, except rather than a furnace replacement I'm only doing it to add AC because I currently don't have AC on my furnace.
No, I didn't know that was an option. Cool idea, though. No pun intended, but I'll take it.
Finally, someone that knows what the fuck they're talking about. Heat pumps are fine in a lot of the world, but when you have to put a furnace in anyway because a heat pump can't deal with actual cold winters, you might as well just have the furnace.
Yep, in Sask right now natural gas is about 1/7 the cost of electricity, which means at best a heat pump only costs about 2x as much to run as a modern gas furnace. Maybe as our grid transitions to renewables and carbon prices rise those costs will become even or shift towards benefiting heat pumps, but I suspect at this point you’re not going to hit break even over the typical life of a heat pump. Much more affordable to stick with gas for now, and maybe start moving to heat pumps 10 years from now. Same argument for water heaters, gas is going to be cheaper than a heat pump for most cases. Maybe new builds lean towards a heat pump because it doesn’t need venting which minimizes HVAC needs, and/or if a person has a solar system that minimizes their electricity costs.
Our power in Sask is dirty enough that burning gas in the home is better for the environment than using electricity for water tanks. 500% heat pumps would be better in theory, but they're not good enough for our winters yet, and the financial costs still aren't in their favour.
https://saskpower.com/our-power-future/our-electricity/electrical-system/where-your-power-comes-from
29% of the power being generated is coal as I type this comment.
Because water heating with heat pumps is currently garbage on the residential scale.
Also because we're already stressing electric infrastructure with what we use now, and few plans to add capacity in any reasonable amount to deal with the massive increase in population, plus electric cars, AC during heat waves etc let alone home heating.
Gas is efficient for heating, and there's plenty of other stuff we can and need to look at before we replace that.
This is propaganda.
On the hottest day last week Ontario hyrdo demand was ~24000MW, last night it went as low as 12000MW. There is room to almost double the baseload in Ontario, with actually smart appliances and controls (not Smart^TM^ shit) a ton of fossil fuel heating loads could be replaced with electric without needing any grid level upgrades.