What does an atmospheric water generator cost to run?

The short answer

An atmospheric water generator’s running cost comes mainly from electricity and replacement filters. The exact total depends on the unit’s wattage, operating time, local electricity rate, and how much water it produces under your indoor conditions.

The LifeWell S20 uses 230 W producing and has a 245 W rated total. At an illustrative electricity price of $0.20 per kilowatt-hour (kWh), running at the 245 W rating for 12 hours would cost about $0.59. Doing that every day for 30 days would cost about $17.64.

That is a planning calculation, not a promise of actual consumption or water production. Atmospheric water generator output depends on air humidity and temperature and falls in dry or cold air. Your actual cost per liter therefore depends on both measured electricity use and measured water production.

How to calculate electricity cost

Use this formula:

Electricity cost = watts ÷ 1,000 × operating hours × electricity rate per kWh

For the LifeWell S20:

• 230 W producing equals 0.23 kWh for each hour at that power level.
• 245 W rated total equals 0.245 kWh for each hour at that rating.

The table below uses the 245 W rated total and an example rate of $0.20 per kWh. It assumes the same number of operating hours every day for a 30-day month.

These examples do not establish how many hours the machine must run. They simply show how wattage, time, and electricity price affect cost. Rated power also should not be treated as a meter reading; measuring consumption at the outlet gives you a better household-specific number.

To adapt the table, replace $0.20 with the full per-kWh rate shown on your electric bill. At higher electricity rates, the running cost rises proportionally. At lower rates, it falls.

What does the electricity cost per liter?

The LifeWell S20 has a rated output of up to 10 L/day at 30°C / 80% relative humidity. Atmospheric water generator output depends on air humidity and temperature and falls in dry or cold air, so “up to” is important.

A simple rating-based example shows how cost per liter can be estimated. Running at the 245 W rated total for 24 hours would equal 5.88 kWh. If the unit also produced the stated maximum of 10 L during that period, the calculation would be:

5.88 kWh ÷ 10 L = 0.588 kWh per liter

At the illustrative electricity rate of $0.20 per kWh, that would equal about $0.12 per liter for electricity. This is not a guaranteed real-world cost. If water production falls because the air is colder or drier, the electricity cost per liter will be higher unless energy use falls by a similar proportion.

The most useful household formula is:

Measured electricity cost ÷ measured liters collected = actual electricity cost per liter

When recording those results, remember that atmospheric water generator output depends on air humidity and temperature and falls in dry or cold air. A short test during humid weather may not represent year-round ownership.

For more detail on the process, see How the LifeWell S20 makes water from air or What is an atmospheric water generator and how does it work?.

Add replacement filters to the budget

Electricity is not the only recurring expense. A LifeWell S20 replacement filter set costs $139.95 as a one-time purchase or $125.95 every 6 months on subscription.

If you purchase two sets in a year, the arithmetic is:

• Two one-time purchases: $279.90 per year
• Two subscription deliveries: $251.90 per year

These totals show the cost of two sets; they do not establish a replacement schedule beyond the stated six-month subscription frequency. Review the current options on the Replacement filter sets page.

The S20 uses a medium-efficiency air filter, followed by PAC, ultrafiltration, and carbon block water stages, plus UVC sterilization in the tank. The water is filtered and UVC-treated, and the unit is built to QB/T 5629-2021 and GB 5749-2022 drinking water standards.

Purchase price is separate from running cost

The LifeWell S20 costs $1,199.95 on Amazon with free shipping and returns. Up to 36-month financing is available through Amazon at $54.96 per month.

Purchase payments and financing are ownership costs, but they are not operating costs. For a clear comparison, keep the initial price separate from electricity and filter expenses. You can review the current LifeWell S20 specs and price before building your budget.

How an AWG compares with other water options

An atmospheric water generator is not automatically the least expensive source of drinking water. Reverse osmosis is far cheaper per liter wherever tap water is available. It uses an existing water supply rather than extracting moisture from air, although most household systems typically require a water connection and produce a reject-water stream.

The LifeWell S20 is a countertop unit with no plumbing, which may matter where installation is inconvenient or a suitable water connection is unavailable. Its tradeoff is dependence on electricity and indoor atmospheric conditions. Read Atmospheric water generator vs reverse osmosis: which fits your home? for a fuller comparison.

Bottled water is another alternative, but its price varies by brand, container size, retailer, and delivery method. Compare your actual bottled-water spending rather than relying on a broad national estimate.

Off-grid shoppers must also account for available electrical capacity. Atmospheric water generator output depends on air humidity and temperature and falls in dry or cold air, so an AWG should not be treated as a guaranteed daily supply in every setting. See Off-grid drinking water: what AWG owners should know.

Get a realistic estimate for your home

Start with your utility’s electricity rate and the 245 W rated total for a conservative planning calculation. After installation, measure actual energy use and record the water collected over several different weather conditions. Atmospheric water generator output depends on air humidity and temperature and falls in dry or cold air, making longer observations more useful than a single-day test.

Consider the LifeWell S20

The LifeWell S20 offers countertop, no-plumbing water production with filtered and UVC-treated water. Review the LifeWell S20 specs and price to decide whether its purchase price, electricity needs, filter costs, and climate-dependent production fit your household.