Is your AC unit not cooling, leaking water, making strange noises, or giving off unpleasant odors? If you’re dealing with air conditioning problems, our checklist below will help you troubleshoot and repair common issues. Before spending hundreds of dollars on a replacement, take a few minutes to inspect your current AC system — you may be able to fix the problem quickly and save money.

If your HVAC system is struggling with poor airflow, rising energy bills, or musty odors, dirty or leaky air ducts may be the cause. Start by inspecting vents for dust buildup and checking for loose or disconnected duct sections. Cleaning out dust and sealing leaks can improve air quality, boost efficiency, and extend the life of your system — all without the cost of major repairs.

If your commercial HVAC system is failing to heat or cool properly, starts making unusual noises, or is causing uneven temperatures, the issue may be minor. Begin by checking thermostat settings, ensuring filters are clean, and inspecting for visible blockages around vents. Regular maintenance and timely repairs can prevent costly breakdowns, improve efficiency, and keep your business environment comfortable year-round.

If your rooftop HVAC unit is struggling with poor cooling, unusual vibrations, water pooling, or frequent shutdowns, it may not require a full replacement yet. Start by inspecting filters, checking for blocked airflow around the unit, and ensuring proper drainage. Addressing small issues early can improve performance, reduce energy costs, and extend the life of your rooftop system – keeping your building comfortable year-round.

If your smart thermostat isn’t connecting to Wi-Fi, isn’t syncing with your HVAC system, or shows inaccurate temperature readings, the fix may be simpler than you think. Start by checking Wi-Fi connectivity, verifying compatibility with your heating and cooling system, and making sure the thermostat is correctly wired. With proper setup and troubleshooting, smart thermostats can optimize comfort, reduce energy costs, and give you full control over your NYC home climate.

Learn about common issues with Split Systems & VRF Units in NYC and what you can fix yourself versus when to call the pros at SIBAIR.