Heat Pumps in Canada
I found this story from Atlantic Canada (Halifax, Nova Scotia) interesting.
https://www.nationalobserver.com/2023/09/08/news/heat-pumps-challenge-chill
The efficiency achieved at low (eg -20C) temperatures was something I can only envy.
The Grant technician who did my annual service yesterday agreed with me that it would be cheaper to run the DHW off the immersion heater, than off the ASHP, when the outside temperature was below Zero (here it touched as low as -8C in last winter's cold snap and the kWh consumption of my ASHP went off the scale). I'm going to try this the coming cold season. He also said that the cold damp weather we had, when the ASHP was almost permanently frosted up, was a problem.
Also from that Canada article note that the grid electricity is only 16 cents /kWh - that's about 9p/kWh. In my dreams.
Mike
Grant Aerona HPID10 10kWh ASHP
Interesting article Mike, Im surprised the technician said that about your DHW, as to be true your heat pump would have to have a COP of less than 1 at-8C. If thats true its not a good advert for Grant?
House-2 bed partial stone bungalow, 5kW Samsung Gen 6 ASHP (Self install)
6.9 kWp of PV
5kWh DC coupled battery
Blog: https://thegreeningofrosecottage.weebly.com/
Heatpump Stats: http://heatpumpmonitor.org/system/view?id=60
Here's a link to another recent study of the efficiency of heat pumps at mildly low temeratures, from a number of countries.
All very encouraging. I wish it reflected my own experience at mildly low temperatures.
Depending on the design and fitting of an individual installation I think there can be a significant difference between the efficiency of the pump itself and that of the overall installation.
Mike
Grant Aerona HPID10 10kWh ASHP
@mike-patrick That is certainly true Mike, have a look at this video from heatgeek
House-2 bed partial stone bungalow, 5kW Samsung Gen 6 ASHP (Self install)
6.9 kWp of PV
5kWh DC coupled battery
Blog: https://thegreeningofrosecottage.weebly.com/
Heatpump Stats: http://heatpumpmonitor.org/system/view?id=60
- 22 Forums
- 2,073 Topics
- 45.5 K Posts
- 39 Online
- 3,354 Members
Join Us!
Trusted Installers
Struggling to find a reliable heat pump installer? A poor installation can lead to inefficiencies and high running costs. We now connect homeowners with top-rated installers who deliver quality work and excellent service.
✅ Verified, trusted & experienced installers
✅ Nationwide coverage expanding
✅ Special offers available
Latest Posts
-
RE: Solar Power Output – Let’s Compare Generation Figures
510kWh of solar PV from my 4kW Hyundai panels and SMA S...
By JulianC , 2 hours ago
-
RE: Is my Samsung heat pump working too well?
Thats in itself is interesting. I have a Vaillant heat...
By JamesPa , 4 hours ago
-
RE: Jokes and fun posts about heat pumps and renewables
@transparent Not a swell season then ☹️
By Toodles , 6 hours ago
-
RE: 5 Star Service from Havenwise
Oh good! I was wondering when/if you might pick them ...
By Transparent , 1 day ago
-
RE: Air Changes per Hour - ACH and the MCS requirement
update - my old installer insisted on a heat loss of 11...
By MatWin , 1 day ago
-
I agree it's not very helpful. Generally, the max heat ...
By Old_Scientist , 1 day ago
-
RE: Commencing on an ASHP Installation Process
I think therein lies the problem. Ratio of quotes to i...
By JamesPa , 2 days ago
-
RE: Why Your MCS-Certified Installer Might Not Be As Competent As You Think
Hive and most other smart thermostats don't play well w...
By JamesPa , 2 days ago
-
RE: Enabling WiFi: Samsung ASHP on Smart Things App
Thanks for the input. I've been running various experim...
By Grahamh-uk , 2 days ago
-
RE: Radiators downstairs are cooler at the bottom after ASHP install
@melonbuffet Hi, this sounds great is you are getting 5...
By ASHP-BOBBA , 2 days ago
-
RE: Ripped Off: How UK Homeowners Are Paying Gas Prices for Wind Energy
I believe there's another reason that network upgrades ...
By Transparent , 3 days ago
-
RE: What’s the modern take on advised types of insulation?
@jeff I am sorry @jeff if I have misunderstood what you...
By Toodles , 3 days ago
-
RE: Getting the best out of a heat pump - is Homely a possible answer?
@editor Cobbler’s Mantra that!
By Toodles , 3 days ago
-
RE: Renewables & Heat Pumps in the News
Australia Blue, the first wind farm in Western Victoria...
By Morgan , 4 days ago
-
RE: Flow rate discrepancy between ASHP and manifold
That's useful thanks, I hadn't seen that table before. ...
By AshRolls , 5 days ago
-
In principle I agree, @johnmo, but with provisos. The...
By Majordennisbloodnok , 5 days ago
-
RE: Heat pump installation and BUS Grant timings
@jamespa Thats how I understood it too. 🙂
By ASHP-BOBBA , 5 days ago
-
RE: Antifreeze top up for my heat pump - is this a rip off?
@sallyl That sounds about right if they are re-filling ...
By Brendon Uys , 5 days ago
-
I wouldn't be so sure about that. Heat pump designers ...
By JamesPa , 6 days ago