I have some recent experience with Dettson heat pumps this month actually.
Dettson manufactures furnaces but sells (second party) Gree heat pumps from China. To find the AHRI number you can search for Gree as the manufacturer on NRCan's listing site. You will see Dettson is not listed there.
This topic also raises a larger issue for Net Zero builders and EAs.
Note that some AHRI ratings include three components - 1. outdoor heat pump, 2. indoor heat pump ("coil") and 3. a furnace / air handler. Other AHRI ratings include only the 1. outdoor heat pump, 2. indoor heat pump ("coil") because the heat pump can be installed into any forced air heating system.
The issue I encountered is that Dettson sells low velocity duct systems compatible with its modulating variable speed gas furnaces. The problem is low velocity air is definitely not compatible with heat pumps. Heat pumps requires the highest air flow rate of any type of heating system at around 400 cfm per ton of heating output.
The AHRI number for a Gree heat pump (only the 1. outdoor heat pump, 2. indoor heat pump ("coil") ) does not factor in the air flow of a Dettson furnace with which it is installed. We have to either assume or confirm that a contractor or builder has chosen a furnace or air handler that generates enough air flow for the heat pump. In my case the contractor had not (neither had Dettson).
Below is the discussion I had with the builder to clarify that low velocity air and heat pumps don't work properly together or "as intended".
The Gree heat pump AHRI 8967198 is a compliant model in Canada. I checked on NRCan listings.
However there are some other requirements in Net Zero. It needs to meet the "design intent" for heating and cooling. The air handler will need to produce air flow compatible with the heat pump (the standard is normally 400 cfm/ton). This is called good engineering design/practice, and is also required under Net Zero.
The heat loss heat gain calculation will help you decide on a size of heat pump.
Below is the wording from the Net Zero Standard.
4.2.3 Air Source Heat Pumps
1. Air-source heat pumps shall be
(a) tested according to CAN/CSA C656-14 “Performance standard for split-system and single-package air conditioners and heat pumps”, and
(b) in the case of split-systems, the indoor and outdoor units have been tested and are compatible to work together.
NOTE:
1. For modelling purposes, energy efficiency ratings for air source heat pumps are listed at http://oee.nrcan.gc.ca/pml-lmp/index.cfm?action=app.welcome-bienvenue&language_langue=en.
2. Contractors are strongly encouraged to verify that the conditioning system is able to provide the requirements as per the designs intent
3. For clarification of eligible equipment see Canada’s Energy Efficiency Regulations as described in Article 2.1.2
Cheers, Matthew