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A healthy HVAC system ensures a happy home, so the units must be in good shape! Sometimes it’s easy to overlook small issues with your HVAC as minor, but it could be a red flag that the HVAC system requires repair.

This guide highlights the top signs your HVAC system needs repair.

10 Top Signs Your HVAC System Needs Repair

Here are the ten top red flags that shouldn’t be ignored if associated with your HVAC system.

There’s Noticeably Weaker Airflow.

The airflow strength around your home is the most likely indicator that your HVAC system needs repair. If the units aren’t as forceful with air as they should be, there might be an issue with the compressor or air ducts.

You’re Finding The Wrong Temperature Of Air Blowing Into Your Home.

Nobody wants hot air blowing in summer or cold air in winter. Suppose you’re finding either of these issues. In that case, there’s a malfunction with your HVAC system that needs diagnosing by an expert to remedy the problem.

The Thermostat Isn’t Functioning Correctly.

The thermostat is the beating heart of your HVAC system, and if it’s not working correctly, it needs repair. Check the batteries to ensure they have some juice; if not, call a technician to look at the unit.

You’re Hearing Strange Noises Coming From The Units.

Another core indicator that your HVAC system needs repair is if you hear strange noises emerge from the grilles. Any sound resembling scraping, grinding, or squealing means you should immediately get a professional on the job.

Or You’re Finding Odd Smells Emerging From The Ducts.

Suppose any strange odors emerge from the HVAC unit. In that case, there may be a problem with the wire insulation, or mold has started to develop somewhere in the system.

There’s Humid Air Around The House.

HVAC systems are meant to dehumidify the air in your home as much as they should cool and warm the area. If there’s humid air around the house, that’s likely an issue with one or more units.

You’re Seeing Freon Leaks Coming From The HVAC System.

Freon leaks can be dangerous, so if you see any fluid coming from your HVAC system, call a technician immediately to deal with the issue.

Utility Bills In Your Home Are Significantly More Expensive Than Before.

Yes, energy bills are getting more expensive these days, but if you’re seeing a massive jump in cost from your last one, there’s likely something wrong with your HVAC system.

Minor HVAC System Issues Are Getting More Frequent.

Sometimes we blow over minor issues with the HVAC system because they tend to remedy themselves, or nothing serious comes of the problem. However, if the issues become repetitive or more frequent, you should get some maintenance and repairs before they worsen.

Your System Is Over Ten Years Old.

If your system is over ten years old, not only is more regular maintenance in order but replacing it entirely. HVACs have a lifespan like any other appliance, and older units are subject to breaking down more often.

A specialist can advise you on your HVAC system’s integrity or help with any of the above red flags. So, where do you find one?

A man in white hard hat standing next to an air conditioner.

Contact Charlotte, NC’s HVAC Specialist for Immediate Repair

A-Tech Repair is Charlotte, NC’s most revered HVAC specialist, able to rise to the occasion should you identify any of the above red flags with your unit. Contact their team to arrange a consultation or organize any same-day repair for your HVAC system.


Many homeowners tend to overlook the importance of HVAC maintenance. This guide will explain why maintaining the system is essential and what you can do to keep it running smoothly.

Why is HVAC Maintenance Important?

HVAC systems keep our homes comfortable year-round if you live in a temperate climate. They’ll keep you warm during winter and cool during summer, so living with one that’s not functioning can be a drag.

That’s why regular maintenance is essential; to maintain that high level of home comfort, we’ve come to enjoy. But how do you keep your HVAC running smoothly? Let’s review the best tips for system maintenance.

6 Tips to Keep Your HVAC System Running Smoothly

So how do you perform efficient, regular maintenance for your HVAC system? Here are some tips to keep it running smoothly.

A man sitting on the grass next to an air conditioner.

Inspect your air filters regularly, and replace them if necessary.

Maintaining airflow is one of the most significant parts of keeping your HVAC system well. It’s always a good idea to check them regularly for dust and debris and remove anything that could clog the air filter.

Clean the air filters at least once a month, and replace them every few months.

Make sure there’s no debris obstructing any outdoor units.

Outdoor cooling systems and heat pumps are subject to nature’s way, meaning anything could get in the form of airflow. Check your outdoor units to ensure the surrounding area is free of plants, leaves, dust mounds, and other obstructions that could compromise airflow.

Give your evaporator and condenser coils a clean at least once a year.

It’s all about getting your HVAC to run as efficiently as possible. Cleaning your evaporator and condenser coils can reduce the energy consumption in the system so that units will run much better and potentially reduce your utility bills.

Schedule maintenance with a professional service every season.

Try maintaining your HVAC to save money. Still, the system’s complexity means a professional audit is highly recommended. It’s easy to forget something during maintenance, and overlooking an essential part of the system could mean costly repairs should it break down.

Get a professional HVAC maintenance service to review the system, once when temperatures start to rise and another when they begin to fall.

Indoor unit registers should be free of dust and debris.

On your indoor units, wipe down the registers (the grilles that allow air into your building), ensuring they’re free of dust and debris. Regularly cleaning them will promote better airflow into the house.

Contact a professional engineer if your units make any strange noises or smells.

Finally, the best way to tell if something’s not quite right with your HVAC system is if it’s making strange noises or smells. Early action on these can minimize the repair costs or need for replacement down the line, so it’s best to contact a specialist to look at the issue.

What if you need to contact an excellent service to maintain your HVAC system?

Contact North Carolina’s HVAC Specialist for the Maintenance Your System Needs

A-Tech Repair is North Carolina’s dedicated HVAC specialist, able to perform maintenance, diagnose problems, and repair any issue. Visit their website to request an appointment, or call the team for same-day appliance repair service.


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