Hello everyone!
We have now been living in our new house for 14 months and are very satisfied. There is always a lot to do, both inside and outside. However, we have been concerned about the humidity levels in the house for some time.
We had a prefabricated timber frame house built, KFW 55 standard. We also use an air-to-water heat pump from Tecalor with a ventilation system that includes heat recovery. The humidity has dropped to below 20% during winter. As far as we know, the indoor humidity should be between 40% and 60%, partly for the sake of the mucous membranes and overall comfort. According to the technician, we cannot adjust anything further on the heat pump regarding this.
Is using a room humidifier our only option now, or does anyone have other suggestions?
Best regards,
SaRo
We have now been living in our new house for 14 months and are very satisfied. There is always a lot to do, both inside and outside. However, we have been concerned about the humidity levels in the house for some time.
We had a prefabricated timber frame house built, KFW 55 standard. We also use an air-to-water heat pump from Tecalor with a ventilation system that includes heat recovery. The humidity has dropped to below 20% during winter. As far as we know, the indoor humidity should be between 40% and 60%, partly for the sake of the mucous membranes and overall comfort. According to the technician, we cannot adjust anything further on the heat pump regarding this.
Is using a room humidifier our only option now, or does anyone have other suggestions?
Best regards,
SaRo
Before I upgraded to an enthalpy heat exchanger, our humidity sometimes dropped below 20% (the cheap hygrometers then just showed --%).
What you can do:
- Reduce the airflow rate
- Retrofit enthalpy heat exchangers (these are also available for Tecalor units, which are identical to some models from Stiebel)
- Generate as much humidity as possible (hang wet towels, avoid opening windows right after showering, have many plants, use ultrasonic humidifiers, etc.)
We now maintain around 40%, which is much more comfortable.
What you can do:
- Reduce the airflow rate
- Retrofit enthalpy heat exchangers (these are also available for Tecalor units, which are identical to some models from Stiebel)
- Generate as much humidity as possible (hang wet towels, avoid opening windows right after showering, have many plants, use ultrasonic humidifiers, etc.)
We now maintain around 40%, which is much more comfortable.
H
hampshire8 Feb 2021 10:44The dryness in winter is typical for your heating system.
With a standard heat exchanger, you exchange the air along with its humidity. This continuously leads to a loss of moisture, and very little moisture comes in with the fresh air. You end up feeling "dried out."
With an enthalpy exchanger, as mentioned by [USER=28384]@KlaRa, the humidity does not leave the house to the same extent, making it worthwhile to occasionally use humidifiers.
Without an enthalpy exchanger, the moisture from a humidifier is lost again within a short time, since the air is fundamentally replaced. Reducing the airflow can lessen the severity of the problem but does not eliminate it.
With a standard heat exchanger, you exchange the air along with its humidity. This continuously leads to a loss of moisture, and very little moisture comes in with the fresh air. You end up feeling "dried out."
With an enthalpy exchanger, as mentioned by [USER=28384]@KlaRa, the humidity does not leave the house to the same extent, making it worthwhile to occasionally use humidifiers.
Without an enthalpy exchanger, the moisture from a humidifier is lost again within a short time, since the air is fundamentally replaced. Reducing the airflow can lessen the severity of the problem but does not eliminate it.
Set the ventilation system to the lowest setting, place large plants, cook a lot, wash and hang a lot of laundry, shower frequently, etc. Additionally, we have a Philips humidifier in the living area. It alone adds about 3-4 liters (0.8-1.1 gallons) of moisture within 24 hours. However, with an enthalpy exchanger, keep in mind that the humidity has to come from somewhere. It doesn’t magically add moisture to the air.
We usually maintain humidity levels between 40-45% at 22-23.5°C (72-74°F).
We usually maintain humidity levels between 40-45% at 22-23.5°C (72-74°F).
H
hampshire8 Feb 2021 11:01halmi schrieb:
With the enthalpy exchanger, just remember that the moisture in the air has to come from somewhere. It doesn’t magically add humidity to the air either. That’s correct; it only keeps the humidity approximately constant. Once properly set, it means less frequent additional humidifying.
We don’t have any measures for increasing or decreasing humidity and this year recorded a minimum of 48% and a maximum of 55% humidity.
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