Showing 0 products
Frequently Asked Questions
What makes an air-source machine easy to install?
Nothing has to be built to create the source.
No groundworks, borehole or water loop.
An outdoor unit and indoor units connect by pipework.
Outdoor air is available everywhere.
That is why it is the most common type.
Why does output fall in cold weather?
There is less heat in cold air to collect.
The machine also faces a larger temperature lift.
Both effects work in the same direction.
Capacity and efficiency decline together.
Demand rises at exactly the same time.
What is the sizing dilemma?
No single size suits every condition.
Sized for the design heating load, it oversizes cooling.
It is also oversized for most of the year.
Sized for typical weather, it needs help at the extreme.
Both choices are defensible.
How do inverter machines help?
They modulate across a wide capacity range.
Cycling on and off is largely avoided.
Comfort improves along with efficiency.
Oversizing is much less punishing.
Most current machines work this way.
What is a cold-climate model?
A range built to hold capacity at low ambient.
Compressor and circuit design differ.
Far more rated output survives the cold.
Standard ranges fall away much faster.
The distinction is real, not marketing.
Which performance figure should be compared?
The one quoted at the local design temperature.
Headline ratings use mild test conditions.
They say little about a cold morning.
Ask for the full capacity curve.
That is the only honest comparison.
Why does the outdoor unit steam in winter?
It is running a defrost cycle.
Moisture freezes onto the outdoor coil.
The machine reverses briefly to clear it.
A little heat and some running time are used.
This is normal operation, not a fault.