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Types of Humidifiers- Broadly classified into 2 types - warm or cool humidifiers. The most popular type of humidifier consists of a reservoir, a fan and wick and works on the principle of evaporation. The other types are vaporizer or steam humidifiers (warm mist humidifiers), impeller humidifiers (the cool mist humidifiers), ultrasonic humidifiers and hydro-pneumatic capillary system humidifiers.

Disadvantages and Risks The use of a humidifier can allow the reproduction of dust mites or the growth of harmful mold, which may cause allergies or respiration problems to children and the elderly. The temperature levels should be relatively at 30% and 50%. Humidifiers can cause severe health problems if the users fail to follow the instructions or the manufacturer’s directions.

Comparison The main choice is between warm and cool humidifiers. The difference is dependent on individual choice of whether you like warm or cool moist air, be it a single room or the entire house. Warm humidifiers, in general, make less noise but can be used only in single rooms. Cool humidifiers on the other hand can cover a larger space, but tend to make noise as they have moving parts. Every humidifier has its own advantage or disadvantage and making a choice on one can be difficult. If the consumer understands how they work, it becomes easier to choose which one you need. Warm humidifiers use a lot of electricity as they require a heating element to heat the water and if overused, air can get muggy. Cool humidifiers on the other hand, require less electricity as they do not need to heat the water, are safe around children with no burn risks. But they end up making noise and some require regular replacement.

Maintenance Most consumers are worried about the care and maintenance required to keep their humidifiers in good condition. Good news is that by following a few simple steps you will be able to keep the humidifiers in top condition. Neglecting the cleaning and maintenance of an electrical appliance can only hinder its performance. Understanding the instructions by the manufacturer, taking care of filters and using the right disinfectants can help you maintain your portable or fixed humidifier. In case of fixed humidifiers, it is recommended that you get help by professionals to get them examined after long periods of usage.

This varies greatly, according to the type and complexity of water purifier you choose. The determining factor for your choice of system should be the range of pollutants you need to remove from your water. You should collect this information beforehand, either through the annual water quality report provided to you by your utility, or through a private test that you can get from a water testing laboratory.

In general, the higher the number of pollutants you want to remove, the higher the number of filtration stages you want to pass the input water through. This makes the price go higher.

Just to give you an indication of the tag prices you could expect, there are simple granular carbon filters starting from just $25 and there are water purifiers combining UV, redox and carbon filters starting from $400 up to $800.

Installation cost

More often than not, the purchase price quoted does not include installation cost. This is because within a given type of water purification system different models may or may not require installation; many of them just sit on a counter top or snap onto a faucet and are ready to use.

If a water purifier does require installation, it can often be done by anyone who is handy with basic tools. If a professional installs it, expect a cost of $100 to $200 beyond the purchase price, depending on the complexity of the installation.

At any rate, always clarify with the company whether purchase price includes installation as well.