How Cold is your Conditioner?

When we compare and contrast, evaporative systems cost half of what it takes to run air conditioning systems and use 75% less energy. This can keep you and your wallet cool during summer months. Here is a great summary of the differences taken from a publication by Xcel Energy:

Central Air Conditioners
System components include a single outdoor unit and uses ducts to distribute cooled air throughout the house.

How It Works

• Air is drawn in through return-air ducts
• Uses high velocity air forced through ducts
• Filtered air is routed to air supply ductwork that carries it back
to rooms
• Cycle repeats continually when air conditioner is running

Performance
• Produces cold, dry air (works best in an airtight home)
• Temperature control and eliminates drafts
• Eliminates humidity from the home
• Reduction in airborne particles such as dust and lint
• Condenser unit is located outside the home limiting indoor noise

Costs
• Higher initial purchase and installation expense
• Higher electricity costs

Maintenance
• Low maintenance
• Replace air filter and clean coils regularly

Evaporative Coolers
System components include a single outdoor unit typically located on the roof, ground, window
or in the attic, and a water line to the system.

How It Works
• Cools air by filtering it through water saturated pads
• Fan inside unit pulls outside air through the sides and into the house
• Water is stored in a pan (media pads) at the bottom of the cooler
• Cooled air is distributed from central location or through existing ducts
• Need to open window or vents to outside when operating

Performance
• Increases humidity in the home
• Increased fresh air flow in the house
• Limited reduction in airborne particles such as dust and lint
• Reduced control over exact temperature in house

Costs
• Uses up to 75% less electricity than central air
• Lower initial purchase and installation expense
• Lower operating costs, typically half of central AC

Maintenance
• Need to maintain air flow balance
• Weatherization maintenance needed in the spring and fall