A heat pump water heater takes heat out of the air around it and puts it into the water. If there is high humidity in the basement, the heat pump water heater also acts like a dehumidifier, as it extracts heat from the basement air. The air coming from the heat pump tends to be between 45 and 50 degrees, so it is as dry as a fall day.
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Higher humidity levels during the winter can absolutely create issues for your heat pump and your nice warm home. Higher humidity means more moisture passing through the unit. When the air is cold and wet, it makes it harder for your heat pump to heat the air.
Generally speaking, the ideal comfort level is between 30-50%. Winter levels will be between 30-40% and in the summer it should be around 40-50%, depending on the outside temperature. You want to feel cool in the summer and warm in the winter and humidity plays a crucial part in the level of comfort in your home.
What should humidity be set at in winter?
In the winter months, the humidity level should be a little less to avoid condensation—around 30-40%. Since cold air doesn’t hold as much moisture as warm air, it’s important to find ways to improve the comfort level inside.
Do heat pumps suffer from humidity?
Many people are unaware of how high humidity impacts the entire heating and cooling system as well as HVAC performance. The removal of moisture from the air is a part of what an air conditioner or heat pump does, thus the more humidity there is, the harder the system needs to work to provide the intended outcomes.
How are heat pumps impacted by humidity?
Your home’s air feels unusually damp and “sticky,” clinging to your skin.
Within minutes of the HVAC turning on, windows begin to fog.
When you first enter your home, you detect a wet or musty stench.