Key takeaways
- Some people notice that their home feels drier when the heat pump is running during winter. Dry skin, irritated eyes or a dry throat are often blamed on the heat pump itself, but the explanation is a little...
- Warm Air Holds More Moisture
- Heating Doesn't Usually Remove Moisture
Some people notice that their home feels drier when the heat pump is running during winter. Dry skin, irritated eyes or a dry throat are often blamed on the heat pump itself, but the explanation is a little more complicated.
In most cases, it's the change in temperature and relative humidity rather than the heat pump creating dry air.
Warm Air Holds More Moisture
When a heat pump warms a room, the air is able to hold more moisture.
Unless extra moisture is added, the relative humidity drops, making the air feel drier even though the actual amount of water in the air may not have changed very much.
Heating Doesn't Usually Remove Moisture
In heating mode, a standard residential heat pump is primarily adding heat, not drying the indoor air.
Cooling mode is different, as moisture naturally condenses from the air while the system cools the room.
Winter Comfort Tips
If the air feels uncomfortably dry:
- Avoid overheating the home.
- Keep the temperature around a comfortable level.
- Stay hydrated.
- Maintain your heat pump so airflow remains efficient.
- Address any ventilation or moisture issues separately.
Could Something Else Be Causing It?
Low humidity can also result from cold outdoor air entering the home, draughts or seasonal weather patterns.
If your home also feels damp or suffers from condensation, improving ventilation may be more beneficial than changing your heating habits.
When Should You Contact Holmes Services?
If your home feels uncomfortable despite using your heat pump correctly, Holmes Services can assess your heating and ventilation to help improve year-round comfort.
Frequently asked questions
Does a heat pump remove moisture while heating?
Generally no. It mainly warms the air rather than dehumidifying it.
Why does my skin feel dry in winter?
Lower relative humidity during colder weather is a common reason.
Can ventilation help?
Ventilation helps maintain healthy indoor air quality, although heating
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Holmes Services helps Auckland homeowners and businesses with heat pumps, ventilation, refrigeration and indoor comfort issues.