HVAC
August 28, 2025

6 Common Commercial HVAC Problems in Monroe County

For business owners in Monroe County, running a business comes with enough challenges, but your HVAC system shouldn't be one of them.

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What to Do When Your Commercial HVAC Isn't Working

For business owners in Monroe County, running a business comes with enough challenges, but your HVAC system shouldn't be one of them. When your commercial HVAC unit in Monroe County is not functioning properly, it can quickly disrupt your business and increase energy costs. 

Here at United Heating & Air, we understand the HVAC challenges that business owners face, especially during Monroe County’s hot summer weather. We’ll explore the most common commercial HVAC problems in Monroe County, particularly in office buildings that rely on rooftop units, and discuss how to solve them effectively, so you and your employees can work in a comfortable environment.

Monroe County AC Problem 1: HVAC System Frequently Turns Off or Won’t Start

When your commercial HVAC unit in Monroe County is not functioning properly and frequently shuts off or fails to start, it can lead to significant discomfort and downtime. This issue disrupts indoor climate control, forcing your equipment to work harder while potentially damaging internal components.

Why It Happens

This problem often stems from restricted airflow caused by clogged filters, which can cause the system to overheat and shut down. Thermostats or temperature sensors that malfunction may send incorrect readings to the system, leading to erratic behavior. Additionally, electrical problems, such as blown fuses or faulty wiring, may prevent the system from powering on at all.

What to Do

Begin by replacing or cleaning your air filters to restore airflow. A professional technician should inspect and calibrate the thermostat to ensure it's functioning correctly. If the issue persists, contact a Monroe County commercial HVAC technician to perform a thorough electrical inspection and resolve any wiring faults.

Monroe County AC Problem 2: Inconsistent Heating or Cooling

When your commercial HVAC unit’s not working, uneven cooling or heating could be the issue. Uneven temperatures throughout your commercial space are another sign of commercial HVAC problems in Monroe County. These fluctuations cause discomfort for employees and customers and reduce overall efficiency.

Why It Happens

This issue usually originates from leaks or blockages in your ductwork, which prevent conditioned air from reaching all zones evenly. Problems with zoning systems or dampers may also lead to poor regulation of specific areas. In some cases, aging or underperforming equipment can no longer deliver consistent heating or cooling, especially rooftop units that are exposed to year-round weather extremes.

What to Do

Schedule a ductwork inspection to identify and repair leaks or obstructions. Have your zoning system recalibrated to distribute air evenly across different areas. If your HVAC system is over 15 years old, consider upgrading to a more efficient rooftop unit designed for commercial office use. Based on Better Buildings, U.S Department of Energy, when upgrading your old HVAC system, you can reduce your energy consumption by up to 50%.

Monroe County AC Problem 3: Unusual Noises from the Commercial HVAC Unit

Unusual sounds are one of the most recognizable commercial HVAC problems in Monroe County. Hearing strange noises such as banging, squealing, or hissing from your HVAC system is a clear indication that something’s wrong.

Why It Happens

Unusual noises are often caused by loose or broken components, such as fan belts or motors. Hissing or bubbling sounds may point to refrigerant leaks, which require urgent attention. Accumulated dirt and debris within the blower or fan can also lead to grinding or whirring noises as the system struggles to function.

What to Do

If your HVAC system begins making odd noises, turn it off to prevent further damage. Contact a certified HVAC professional in Monroe County to perform a detailed inspection and repair or replace the affected parts.

Monroe County AC Problem 4: Poor Indoor Air Quality in Your Building

When your HVAC system is circulating dust or allergens, or if there’s a lingering musty smell, you’re likely dealing with commercial HVAC problems in Monroe County that affect indoor air quality.

Why It Happens

Poor air quality is typically caused by dirty filters or coils that allow dust, mold, and other pollutants to circulate. Inadequate ventilation traps airborne contaminants indoors, and improper humidity levels create conditions for mold growth and bacterial spread.

What to Do

Change your HVAC filters at least once a month to reduce airborne particles. Schedule coil cleanings and duct inspections with us to eliminate hidden sources of contamination. You may also want to install air purifiers or humidity control systems to maintain a healthier indoor environment.

Monroe County AC Problem 5: Faulty Thermostat Readings and Controls

When your building doesn't feel as warm or cool as the thermostat indicates, it’s likely you're dealing with commercial HVAC problems in Monroe County related to faulty temperature readings or controls. This can lead to discomfort, overuse of your system, and even full-on breakdowns.

Why It Happens

Thermostats that are old, improperly calibrated, or installed in the wrong location can send inaccurate temperature data to the HVAC system. As a result, the system may run too long or shut off prematurely. This not only affects comfort levels but can lead to increased energy consumption and wear on your equipment. 

What to Do

Start by checking if the thermostat is installed away from direct sunlight, windows, or equipment that generates heat. Replace outdated units with programmable or smart thermostats for greater control. We have HVAC professionals in Monroe County ready to inspect and recalibrate the thermostat to ensure accurate temperature regulation and efficiency for your system's performance. 

Monroe County AC Problem 6: System Short Cycling or Freezing Up

If your HVAC system frequently turns on and off or develops ice, you may be experiencing another form of commercial HVAC problems in Monroe County, which is better known as short cycling or freezing.

Why It Happens

Short cycling and freezing are often caused by low refrigerant levels or refrigerant leaks. Dirty coils and blocked airflow can also contribute to freezing. In other cases, the system may be oversized for your building, causing it to operate inefficiently.

What to Do

A certified HVAC technician, such as United Heating & Air, should inspect and refill refrigerant levels and check for any leaks. We offer cleaning services for both the evaporator and condenser coils to restore normal function. Ensure that your HVAC system is properly sized and configured to match the demands of your commercial property.

Why Call United Heating & Air for Commercial HVAC Services?

Commercial HVAC not working in Monroe County? Don’t wait for a minor problem to turn into a costly breakdown. At United Heating & Air, we offer expert diagnostics, repair, and maintenance to keep your business climate-controlled and efficient year-round.

Check out our full list of commercial HVAC services or contact us directly to book your appointment. Make sure to visit our Google Business Profile for directions, hours, and verified reviews from other businesses in Monroe County.

Don’t Let HVAC Problems Disrupt Your Business

Whether you're dealing with a commercial HVAC unit not working in Monroe County or trying to stay ahead of breakdowns, proactive maintenance and quick repairs are the key to long-term comfort and efficiency. Partner with United Heating & Air to resolve issues fast, protect your investment, and maintain peak performance in every season.

Contact us today to keep your commercial space running smoothly. Your comfort is just one service call away!

Frequently Asked Questions (FAQs)

What should I do if my commercial HVAC unit won’t turn on?

First, check the thermostat settings and circuit breakers. If nothing seems off, it may be an electrical or sensor issue. Contact a licensed HVAC technician in Monroe County for fast repairs.

How often should I schedule maintenance for my commercial HVAC system?

Ideally, have your system inspected and serviced twice a year—once before cooling season and once before heating season.

What are the signs that my commercial HVAC system needs replacing?

Frequent repairs, inconsistent temperatures, rising utility bills, and units older than 15 years are all signs that it may be time for a replacement.

Can dirty filters cause HVAC systems to stop working?

Yes, clogged filters restrict airflow, which can cause the system to shut down or freeze. Change filters monthly to avoid this common HVAC problem in Monroe County.

Why is my HVAC system making loud noises?

Noises often signal loose parts, refrigerant issues, or fan obstructions. Turn off the unit and call a professional for inspection.

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