6 warning signs your business HVAC needs an emergency call-out
Your heating, ventilation and air conditioning (HVAC) system is one of the most important parts of running a business, yet it’s easy to overlook. The truth is, even a small fault can quickly turn into an emergency.
In fact, unplanned downtime across business operations, including HVAC failures, can cost companies worldwide up to £90,000 per hour. (Source: ABB)
The good news is, there are usually early warning signs before your system gives up entirely. Spotting these signs and calling in an engineer quickly can save you from major disruption, unhappy staff, and even health and safety risks.
In this guide, we’ll cover the most common signs that your business HVAC system may need urgent attention – and what you can do if you spot them.
How to know if your business HVAC needs an emergency call-out
Here are a few common problems to look out for.
1. Strange noises from your HVAC system
Strange noises are usually one of the first signs that something’s not quite right with your HVAC system. A well-running HVAC system should run along quietly in the background. So, if you suddenly hear banging, rattling, clicking or grinding, it’s time to take notice.
These often point to issues like loose parts, worn bearings or a motor that’s starting to give up. A one-off noise isn’t always a reason to panic, but if it keeps happening, it’s worth calling someone out. Leaving it too long can turn a small fix into a major, costly repair.
2. Poor airflow or inconsistent temperatures
Is your building too hot in some areas and too cold in others? Uneven heating or cooling usually means your HVAC isn’t moving air around properly. The causes can range from blocked ductwork and faulty fans to a refrigerant leak.
It might not seem like an emergency at first, but poor airflow can quickly affect staff comfort, productivity, and in some cases, sensitive equipment like computers and data-storage. Getting an engineer out means you’ll rule out anything serious and get things working as they should.
3. Strange smells or visible leaks
If your HVAC system gives off a burning smell, musty odours, or you actually see liquid dripping where it shouldn’t – don’t ignore it.
- Burning smells can point to electrical faults
- Musty odours may mean mould inside the ducts
- Leaks often signal damaged pipes, coils, or compressors
Any of these can pose health risks for staff and customers, not to mention potential fire or water damage. This is one situation where an emergency HVAC call-out is essential.
4. Frequent system cycling or sudden shutdowns
Does your HVAC system keep switching on and off, or shutting down? This can be frustrating, and it’s one of the most important emergency HVAC signs to look out for.
Possible culprits include a faulty thermostat, electrical issues, or internal components starting to fail. Left unresolved, this can lead to:
- Increased energy bills
- A shorter system lifespan
- An uncomfortable building for staff and customers
If you’re experiencing any of the above, we recommend an engineer visit to address the cycling issue as soon as possible.
5. Sudden spike in energy bills
An unexpected rise in energy costs can be a subtle warning that your HVAC system isn’t operating efficiently. This can be caused by a range of problems, including
- Failing motors
- Blocked filters
- Refrigerant leaks
All of which can force the system to work harder, consuming more energy and increasing your bills.
An emergency HVAC call-out can help to identify the cause and prevent your business from losing any more money.
6. Control system errors or alarms
This is one of the most obvious signs your business HVAC needs a repair.
Modern commercial HVAC systems are often equipped with digital control panels or building management systems (BMS). If your system displays error codes, warning lights or alarms, an engineer will need to take a look.
These alerts are designed to prevent further damage, so responding quickly can make all the difference.
HVAC maintenance tips: How to prevent emergencies
While some issues can’t be predicted, regular maintenance can significantly reduce the risk of unexpected breakdowns. Follow these simple steps to keep your HVAC system in excellent condition:
- Schedule routine inspections and servicing
- Clean or replace filters regularly, as recommended by your provider
- Check for unusual sounds or leaks
- Monitor energy usage and system performance
- Keep control systems and thermostats up to date
By staying proactive, you can catch small issues before they escalate into future HVAC emergencies.
If you notice any of the signs above, it’s best to act quickly. Emergency HVAC call-outs are particularly important when your system is critical to operations, such as in offices, hotels, retail spaces or healthcare facilities.
At Atmostherm, our team of experts can diagnose and resolve HVAC emergencies efficiently, helping you get your building back to a comfortable and safe environment with minimal disruption. Contact our HVAC repair team here.
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