The First Check: The Remote (Yes, the Batteries)
Before we touch gauges or tools, we pick up the remote.
The display looks… tired. Dim. Barely holding on.
Two fresh batteries later and the heat pump responds instantly.
This is, by a large margin, one of the most common causes of “heat pump not working” call-outs.
Wireless remotes don’t throw error codes when the batteries die. They just stop communicating and let the heat pump take the blame.
If your heat pump won’t respond, check the batteries first.
If you don’t, that’s okay. We carry spares.
“It Doesn’t Feel Right” (Comfort vs Temperature)
Next comes the feeling.
Too hot.
Too cold.
Not how it was yesterday.
Here’s the thing: thermostats control temperature, not comfort.
Sunlight through windows.
People in the room.
Cooking, showers, computers, TVs.
Doors opening and closing.
All of these affect how a space feels, even when the temperature is exactly where it’s set.
Your heat pump isn’t ignoring you.
It’s obeying physics.
The Wall Controller That Lives in the Wrong Place
This one’s a classic HVAC service call.
The wall controller is mounted:
Near a printer
Above a fridge
In direct sunlight
Or in a hallway that isn’t even the room being heated or cooled
Wall controllers measure temperature exactly where they are. Put one next to a heat-producing appliance and it thinks the room is warm. Put it in a draft and it thinks winter has arrived early.
The heat pump isn’t confused.
It’s just been given bad information.
“It Used to Work Better”
We hear this a lot, and it’s usually true.
Heat pumps don’t suddenly fail. They gradually lose performance:
Filters clog
Outdoor units get dusty
Drains partially block
Airflow slowly reduces
Nothing dramatic. Nothing broken. Just a system that hasn’t been serviced.
This is why regular heat pump servicing matters, not because things explode, but because they quietly stop working as well as they should.
So What’s Actually Wrong Most of the Time?
After thousands of HVAC service calls, here’s the honest breakdown:
Flat remote batteries
Dirty filters
Poor airflow
Wall controllers in the wrong location
Changing room conditions
Expectations that don’t match how heat pumps work
Actual system faults do happen, but far less often than people think.
High Tech HVAC – Auckland Heat Pump Servicing & Repairs
Trusted by techs. Chosen by you.
If you have been to enough HVAC service calls, you learn to decode certain phrases.
One of the most common is:
“There’s definitely something wrong with the heat pump.”
“Definitely” is doing a lot of heavy lifting here.
So we load up the van, head out across Auckland, and prepare to diagnose a serious heat pump fault, refrigerant loss, failed sensors, control board issues… something suitably dramatic.
We arrive.
We turn the system on.
It works perfectly.
The Takeaway
Most heat pump issues aren’t breakdowns.
They’re small, simple things adding up until someone says,
“Something doesn’t feel right.”
And that’s exactly when to call us.
At High Tech HVAC, we don’t just repair heat pumps, we explain them, service them, and keep them running properly year-round.
We’ll bring the tools, the experience…
and yes, spare batteries.