this post was submitted on 27 Nov 2024
6 points (100.0% liked)
Canada
7230 readers
800 users here now
What's going on Canada?
Communities
🍁 Meta
🗺️ Provinces / Territories
- Alberta
- British Columbia
- Manitoba
- New Brunswick
- Newfoundland and Labrador
- Northwest Territories
- Nova Scotia
- Nunavut
- Ontario
- Prince Edward Island
- Quebec
- Saskatchewan
- Yukon
🏙️ Cities / Local Communities
- Calgary (AB)
- Edmonton (AB)
- Greater Sudbury (ON)
- Halifax (NS)
- Hamilton (ON)
- Kootenays (BC)
- London (ON)
- Mississauga (ON)
- Montreal (QC)
- Nanaimo (BC)
- Oceanside (BC)
- Ottawa (ON)
- Port Alberni (BC)
- Regina (SK)
- Saskatoon (SK)
- Thunder Bay (ON)
- Toronto (ON)
- Vancouver (BC)
- Vancouver Island (BC)
- Victoria (BC)
- Waterloo (ON)
- Winnipeg (MB)
🏒 Sports
Hockey
- List of All Teams: Post on /c/hockey
- General Community: /c/Hockey
- Calgary Flames
- Edmonton Oilers
- Montréal Canadiens
- Ottawa Senators
- Toronto Maple Leafs
- Vancouver Canucks
- Winnipeg Jets
Football (NFL)
- List of All Teams:
unknown
Football (CFL)
- List of All Teams:
unknown
Baseball
- List of All Teams:
unknown - Toronto Blue Jays
Basketball
- List of All Teams:
unknown - Toronto Raptors
Soccer
- List of All Teams:
unknown - General Community: /c/CanadaSoccer
- Toronto FC
💻 Universities
💵 Finance / Shopping
- Personal Finance Canada
- BAPCSalesCanada
- Canadian Investor
- Buy Canadian
- Quebec Finance
- Churning Canada
🗣️ Politics
- Canada Politics
- General:
- By Province:
🍁 Social and Culture
Rules
Reminder that the rules for lemmy.ca also apply here. See the sidebar on the homepage:
founded 4 years ago
MODERATORS
you are viewing a single comment's thread
view the rest of the comments
view the rest of the comments
The expense for ground source heat pumps, especially in the city, would be ridiculous.
Heat pumps are great, but under -15C, they're really, really inefficient. And Winnipeg is very often much colder than that.
I think you're working off old data, or you're misunderstanding the article where they say air-source heat pumps start to lose efficiency at ~15°C. My unit, installed just over a year ago is rated for a COP of at least 1.72 at 0°F (-17.78°C) when the inside temperature is 80°F (26.67°C). And as I said, newer units are getting better and better.
I have a newer 23 SEER pump now, and it's pretty terrible at that temperature. The draw is approaching resistive at -20 and beyond that, well, don't even bother. If I compare costs to running my backup furnace past -15 vs the electricity costs to force it to work at that temperature, I turn off the heat pump.
Yes, for about 90% of the work these pumps do, they are efficient and cost effective, as well as cooling in the summer. But this blue-sky thinking that they can replace NG heating in places like the Canadian Prairies is a pipe dream at this time.