It’s a warm afternoon in Southwest Longmont. The sun is shining, your air conditioner is humming away, and yet… your house still feels uncomfortable. If your AC is running but your home isn’t cooling down, you’re not alone. This is one of the most common summer service calls we receive.
Before you panic, here are a few simple things to check:
- Check Your Thermostat Settings
Make sure your thermostat is set to “cool” and not just “fan.” It sounds simple, but it happens more often than you’d think. Also check the temperature setting—if it’s set only a degree or two below the indoor temperature, your system may not run long enough to make a noticeable difference. - Inspect Your Air Filter
A clogged air filter restricts airflow, which can prevent cool air from circulating properly. During peak summer months, filters may need to be replaced every 1–2 months. If it looks dirty, it probably is. - Look at the Outdoor Unit
Your outdoor condenser needs proper airflow to do its job. If it’s surrounded by weeds, debris, or cottonwood buildup, it can’t release heat effectively. Turn off power to the unit and gently clear away visible debris. - Check for Ice on the System
If you notice ice buildup on refrigerant lines or the indoor coil, turn the system off and let it thaw. Ice often signals airflow problems or low refrigerant levels—both issues that require professional attention.
If you’ve checked these basics and your home still isn’t cooling, it may be time to call a trusted local HVAC professional. Issues like refrigerant leaks, failing capacitors, dirty coils, or aging equipment aren’t DIY fixes and can worsen if ignored.
We know how important it is to keep your home comfortable—especially during those hot Front Range afternoons. Regular maintenance can prevent many of these problems before they start, saving you time, stress, and unexpected repair costs.
If your AC is running but your comfort is nowhere to be found, don’t wait. Loos & Sons HVAC can provide an inspection to restore cool air—and peace of mind—for the rest of the summer. Schedule today by calling (303) 536-8922 or book online at loosandsonshvac.org.
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