The Aprilaire 700 Humidifier is a consumer-grade humidifier machine that helps you to make your home more comfortable by offering whole-home humidity control. This particular model makes use of a built-in fan which draws air that has been heated up from the built-in furnace. It is a large machine, and it must be installed by a processional HVAC engineer.
Why Choose the Aprilaire 700 Humidifier?
This particular model of humidifier offers flexible degrees of humidity control with an automatic feature that will monitor the humidity level in the room and automatically adjust it depending on your settings. This ensures that you will never have to feel uncomfortable – you will always enjoy a room that is at the perfect level of humidity.
If you prefer more control, then there are plenty of readouts to show you the temperature and relative humidity of each room, so that you can make manual adjustments as you require.
The unit is quiet and runs well. It will require annual maintenance to keep it ticking over, but with that maintenance it will serve you well for many years.
The Dangers of Dry Air
Humid air can be oppressive-feeling and leave you very tired. It can make the room feel hotter than it is, and make it difficult for you to concentrate. Dry air is not that much better, and often leaves people with headaches, nasal issues, and feeling drained. It can be hard on your skin too. Using a humidifier will keep the room at exactly the right temperature and level of humidity.
However, there is some maintenance that you will need to do. With older models of humidifiers there can be problems with mold and bacterial growth. This happens if the temperature is within a certain range (there are different molds that like different temperatures), there is a lot of water build-up, and there is something for the mold to use for food.
The Aprilaire range of humidifiers are evaporative humidifiers, and they are designed to work in a way that prevents mold from taking hold.
There are no materials in the humidifier that will work as a food source for mold, and anything that could potentially support mold growth (such as the Aprilaire 400’s paper Water Panel) is treated with an anti-microbial coating.
The humidifiers do not have any standing water left when they are turned off, either – the water will be drained, so that the surfaces are completely dry in between uses.
The humidifiers have a 5-year parts warranty if they are installed by a qualified person. This means you can be confident that they will serve you well for many years.
The humidifier is designed to keep your room at the optimal level of humidity at all times. If the humidity in your house is at or above 45%, then the humidifier will not operate. It will keep checking the humidity level in the house, though, and will kick in when the level drops below 45%.
The humidifier will operate any time your furnace is producing heat, and the humidity in the house is lower than the humidistat’s setting. If you suspect this is not the case, test the humidity in the room with a separate device, and call an engineer if necessary.
When the humidity reaches the right level, the water that was not used up during the humidification process is used to flush away any minerals that were left behind after other water evaporated. This stops the humidifier from scaling up, and also prevents the growth of microbes.
Choosing the Right Humidity Level
The best relative humidity level for your home depends partly on your personal preferences, but Aprilaire recommends that people aim for a humidity level of 35% (relative) when the temperature is 70F indoors. Some people prefer higher levels of humidity – up to 45%. When you start getting above that you run the risk of the room feeling sticky and uncomfortable.
The Aprilaire 700 humidifier has an automatic digital control which will not just keep humidity at the level you have set (although that is an option), but also, if you allow it, choose different humidity levels depending on the conditions outside at the time.
This means you could have 20% humidity on a cold day, and 45% humidity when it is nice and warm outside.
Mold will not grow when the humidity in the property is below 60%, and this means that as long as your humidifier is properly installed and is configured correctly using it will not cause mold.
You may, however, discover an issue with condensation. You will find that condensation happens if the cold air outside of your window makes the air close to your window cool more quickly than the rest of the air in the room.
You can combat this, to an extent, by programming your humidifier so that it will make the air less humid late at night and early in the morning when the air outside is at its coldest. Another option is to purchase an upgraded humidistat that will adjust the relative humidity pre-emptively whenever it starts getting colder outside.
There are a lot of different humidifiers on the market, but the evaporative style that is used by Aprilaire is effective and is safe for your heating system. You should not notice any problems as a result of using this type of humidifier, and you will find that as long as you take good care of it (making sure that it is serviced every time it needs to be), it will work well and will operate very quietly.
Note that you will need to have the unit professionally installed. You cannot buy one in a store and install it yourself. A qualified engineer will need to come out and look at your home and tell you which unit is best for your home (a smaller home may need an Aprilaire 400 instead of 700, for example), and then fit it for you to ensure that the warranty remains valid.