pianotuna wrote:
Hi mtofell1,
What temperature do air based heat pumps stop working--or switch to resistance heating? The old tech was about 40F but I believe that has changed.
Thanks in advance.
mtofell1 wrote:
I work with HVAC systems of all types daily so trust me, there's no misconception here.
But, yes, you are correct (which I'm sure is what you LOVE to hear) a heat pump does deliver more heat for a buck than an electric heater.
It's traditionally been around 40 but there is some variation depending on other factors like humidity.
Newer refrigerants can effectively heat down to lower temperatures but I'm honestly not sure exactly where the cutoffs are.
With all the energy efficiency focus on building construction this stuff is a moving target on a year by year basis. I operate and test systems as part of my work but don't design and install them. I'm by no means the end all of knowledge on the subject but know a lot more than your average bear.
Unless I am completely misunderstanding the OP's question, this is all completely off topic. Heat pumps are expensive and likely well overboard for what is needed. The time to recoup the savings of a heat pump versus a couple electric space heaters in the OP's application would likely be several lifetimes unless the weather in Texas is all of the sudden similar to Alaska.