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- Swamp cooler or AC?
Swamp cooler or air conditioning?
Pueblo is one of the places in Colorado where evaporative cooling genuinely works. So is refrigerated air. Here is how they pull against each other, factor by factor.
Eight factors, two ends of the rope.
The knot shows which way each factor pulls. The words say it too.
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Electricity use
Strongly evaporative.
An evaporative cooler runs a fan and a small water pump. Refrigerated air runs a compressor as well, which is where most of the power goes.
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Dry-heat afternoons
Leans evaporative.
On a hot, dry Pueblo afternoon a well-kept cooler does its best work, and brings in a steady flow of fresh air while it does.
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Humid monsoon days
Strongly AC.
Evaporation slows when the air is already damp, so a cooler cools less on muggy July and August days. Refrigerated air doesn't depend on the humidity outside and dries the air as it cools.
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Lowest indoor temperature
Strongly AC.
If you want the house held at a set temperature on the hottest afternoon of the year, refrigerated air is the dependable choice.
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Smoke, dust & pollen
Leans AC.
A cooler needs windows open and pulls outdoor air in. AC keeps the house closed and filters recirculated air — better on smoke and high-pollen days.
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Water
Leans AC.
Coolers use water every hour they run, and hard water leaves mineral build-up on pads. Refrigerated air uses none.
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Seasonal upkeep
Leans AC.
A cooler needs a spring start-up, pad changes and a fall winterizing before the first freeze. AC needs a yearly check.
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Big open buildings
Leans evaporative.
Warehouses, shops and bays with big doors are hard to air-condition economically. Large evaporative units cool the people working in them.
A general comparison, not a quote. We don't publish running costs or savings — they depend on your rates, your building and how you use it.
What we usually recommend.
- Evaporative
- You don't mind open windows, you care about the power bill, and you can live with a few muggy afternoons.
- Refrigerated AC
- Someone in the house has allergies or asthma, you want a set temperature every day, or smoke days bother you.
- Both
- Plenty of Pueblo houses keep a cooler for dry weeks and AC for monsoon weeks. It's a legitimate answer, not an upsell.
- Heat pump
- If the furnace is due for replacement too, a heat pump gives you refrigerated cooling and efficient heating in one.
Why July can surprise you.
Most of Pueblo's summer is dry. Then the monsoon arrives.
Through much of the summer, the air over Pueblo is dry enough for evaporative coolers to do their best work. From around July into August, monsoon moisture brings afternoon storms and muggier days, and that is when a cooler struggles most.
If your cooler "stops working" on those days, it may be doing everything right — the air simply can't take up more water. If it struggles on dry days too, it needs attention: pads, pump, water distribution, or more open window area for the air to leave by.
For shops and warehouses.
Large evaporative units are the practical way to cool big open spaces with bay doors. We start them up, keep water distribution and bleed-off right to limit mineral build-up, and winterize them before the freeze.
For offices, clinics and restaurants, where doors stay closed and humidity matters, we usually recommend rooftop AC — and we'll say why for your building.
We'll look and recommend.
Tell us about the house or building. We'll look at what you have and give you a straight answer.