There is nothing quite like the relief of stepping out of the Denver heat and into a perfectly cooled home. But what happens when you hear the familiar hum of your air conditioner, yet the temperature inside keeps climbing? It’s a frustrating and unfortunately common experience for many homeowners in the Mile High City.
If your AC is running but not cooling, don’t panic just yet. At The Weather Changers Heating & Air Conditionin, we’ve been helping our neighbors across the Denver Metro area stay comfortable since 2009. We know that sometimes the fix is simple, while other times you need a professional touch. Here’s a look at the most common culprits and what you can do about them.
1. The Air Filter is Clogged
Believe it or not, one of the most frequent reasons an AC stops cooling is a dirty air filter. When the filter is packed with dust, pet hair, and Denver allergens, it restricts airflow. If the air can’t move through the system, the cooling process stalls, and your unit has to work twice as hard for half the results.
What to do: Check your filter. If it looks grey or fuzzy, swap it out for a fresh one. We recommend doing this every 1-3 months, especially during our dusty summers.
2. Your Thermostat Settings Are Off
It sounds simple, but it happens to the best of us! Sometimes the thermostat accidentally gets switched from “Cool” to “Heat,” or the fan is set to “On” instead of “Auto.” When the fan is “On,” it blows air continuously, even when the AC compressor isn’t actually cooling it.
What to do: Ensure your thermostat is set to “Cool” and the fan is on “Auto.” If you have a smart thermostat, double-check that a schedule hasn’t been overridden.
3. The Outdoor Unit is Blocked or Dirty
Your outdoor condenser unit needs to “breathe” to release the heat it pulls from inside your home. If it’s crowded by overgrown weeds, mulch, or debris, it can’t do its job. Likewise, if the metal fins are coated in dirt or cottonwood fluff (a classic Denver problem!), the system will struggle to cool.
What to do: Clear at least two feet of space around your outdoor unit. You can gently rinse the exterior with a garden hose, but be careful not to use high pressure, as you don’t want to bend the delicate fins.
4. Frozen Evaporator Coils
If you notice ice on the copper lines leading to your unit, your coils have likely frozen over. This usually happens because of restricted airflow or low refrigerant. Even though it’s hot outside, that ice prevents the system from absorbing heat.
What to do: Turn the AC off immediately to let the ice melt, and schedule a Service. Running a frozen system can cause serious damage to your compressor.
5. Refrigerant Leaks
Your AC doesn’t “use up” refrigerant like a car uses gas; it circulates it in a closed loop. If your refrigerant levels are low, it means there is a leak. Symptoms include a hissing sound or a house that just won’t get below a certain temperature.
What to do: This is a job for the pros. Handling refrigerant requires specialized tools and licensing. Our technicians can find the leak, fix it, and recharge your system properly.
When to Call The Weather Changers
As a family-owned and locally-operated business, we pride ourselves on offering honest and reliable solutions. We aren’t here to sell you something you don’t need; we’re here to ensure your family stays cool.
If you’ve checked your filter and thermostat and you’re still feeling the heat, it’s time for an expert look. Whether you need a quick repair or a more involved Air Conditioning Service, we have you covered.
Pro Tip: Want to avoid these mid-summer headaches? Ask us about our membership plan! Regular maintenance is the best way to catch these issues before they turn into “no-cool” emergencies.
Don’t sweat it out alone! Contact us at The Weather Changers today and let us get your home back to the refreshing oasis it should be.
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