Commercial HVAC system replacements are generally a final option, after all maintenance and improvements possible have been done. It’s an expensive, labor-intensive and time-consuming process, so is usually seen as a last resort.
It comes to a point though when your equipment is simply too old or dysfunctional, and a system replacement cannot be avoided. Which begs the question – how do I know when it’s time to replace my commercial HVAC system?
Common Signs You Need to Replace Your HVAC System
If you notice the following symptoms in your commercial system, it’s likely time for a new HVAC system.
Unexplained Increases in Energy Bills
If your utility bills are increasing abnormally, it’s a sign that you HVAC system is running inefficiently. When your system is running inefficiently, it needs more power to run, which drives up your energy costs. If this is happening a lot, it may be time to replace your HVAC system, which will save you money in the long run.
Poor Air Quality
Stuffy, hard-to-breathe air could indicate a leak in your HVAC system, or it may be that air isn’t being filtered through your HVAC system correctly. If changing your air filters doesn’t improve the air quality, it could be a sign of something more serious. A broken furnace, for example, can lead to carbon monoxide leaking through the indoor air vents, which would become a major health risk. If it’s not a simple fix, your HVAC system may need to be replaced.
Frequent Breakdowns and Repairs
If your repairs are becoming increasingly frequent, it may be a sign that your HVAC system is nearing the end of its lifespan. Constant repairs and replacements are costly, so replacing the entire system may be more cost-effective. Downtime is expensive, so we recommend replacing your system before it breaks down completely!
Visible Signs of Malfunction
If there are visible signs of malfunction with your HVAC system, such as excessive moisture, rust, blown fuses, low refrigerant levels or broken parts, call your HVAC tech. These signs could point to a bigger problem that routine maintenance won’t fix, and a system replacement may be needed.
High Humidity Levels
Too much humidity in your building isn’t a good sign. Excessive moisture can cause mold and rust, which could lead to health risks and equipment malfunctioning, as well as cause physical damage to your HVAC equipment and surroundings. It can also attract insects and other pests. If your humidity levels are too high and simple repairs don’t fix the problem, if may be time for an HVAC system replacement.
Uneven Heating or Cooling
Unexplained swings in temperature, or some areas of your building experiencing higher temperatures than other areas, or just an uncomfortable day-to-day climate, are signs that your HVAC system needs fixing. It could be a damaged thermostat, clogged air filters, damaged blower motors, low refrigerant levels or a leaking duct system – or it could be that your HVAC system needs to be replaced.
Unusual or Excessive Noise
Unusual or loud sounds can indicate that your HVAC system is straining. Grinding, hissing, squeaking, clunking or rattling noises could point to loose or broken parts. If your HVAC system is making unexplained noises, it’s definitely time for a service call and maybe even an HVAC replacement.
Unusual or Strong Odors
Unusual or strong odors coming from your HVAC system are a sign of serious trouble and should not be ignored. Indoor air quality may be compromised, putting everyone in the building at risk. An aging or broken HVAC system can cause musky odors and sometimes burning scents. An oil smell may be a sign of internal oil leaks or a damaged oil burner. A smoky smell means something is burning or overheating within your system such as a frayed wire or damaged motor. If your system is emitting a smoky odor, turn the system off to prevent further burning. Overheated systems can also burn dust or debris, worsening the smell. Unusual odors indicate at least a partial system failure and may require an entire system replacement.
Sudden Stops and Starts
Short cycling, or sudden stops and starts, indicates that your HVAC system is not getting enough power to operate continuously, or that your system is overheating. This forces the equipment to work harder to compensate for the impaired performance. If your system is frequently having sudden starts and stops, it could be a sign that you need a system replacement.
Extended Running Time
Likewise, if your HVAC system is running too long, it could be a sign of system damage and it will definitely drive your energy costs up. If the system is damaged, the coils could be degenerating or a motor could be failing, or it could be something bigger and it may need replacing.
Energy Loss
There will always be some energy loss through HVAC exhaust, but if this has become a chronic problem in utility costs, or your system is losing energy through leaky ducts, or your HVAC equipment doesn’t meet efficiency requirements, then a system replacement may be needed. New equipment can dramatically reduce energy loss and provide you with a high return on investment over time.
Aging Equipment
If your HVAC equipment is nearing the end of its lifespan, it’s not a bad idea to consider a system replacement before something costly occurs. The average life of a commercial HVAC system is 10-20 years, depending on factors such as installation quality, maintenance, climate and weather conditions. Old, decrepit HVAC systems are significantly less efficient than their modern counterparts. If you’ve noticed a drop in efficiency recently, it may be time for an HVAC system replacement.
Outdated Technology or Equipment
As technology advances, HVAC systems become more cost effective, reliable and ecofriendly, and consume less energy. Many older models use R-22 refrigerant, which contains chlorine and can create a health and environmental risk when leaked into the air. Most units that use R-22 have been phased out, but if you have an older unit that is still using R-22, you’ll want to have your system replace soon. Outdated technology or equipment is absolutely a valid reason to replace your HVAC system!
Ultimately, the first step to knowing if it’s time for an HVAC system replacement is simply to get a professional opinion. Not sure where go for that? Try SyncQuip Mechanical Group! Take advantage of a straightforward, no-BS kind of opinion from our professional service techs.