👋 A Note from Jake Lawson
One of the most common questions I get from hotel owners, flat managers, facility operators and property maintenance teams is surprisingly simple: “How do I know when I need to replace my PTAC unit?
It's a good question. After all, PTAC systems are made to be durable. The life span of many units is extending years beyond the expected lifespan. It doesn’t mean your PTAC is running efficiently or giving the level of comfort your occupants expect just because it still comes on.
The fact is, the longer you put off replacing ageing PTAC equipment, the more expensive it can be. And the added costs of higher energy bills, more maintenance calls, guest complaints, inconsistent temperatures and unexpected breakdowns often cost more than many realise.
Modern PTAC systems have come a long way in the last decade. Newer units are more efficient, quieter, have smarter controls, better heating performance and use environmentally responsible refrigerants . Being able to determine when replacement is appropriate can help building owners avoid costly surprises, while improving long-term building performance.
Let's examine the red flags that might indicate it's time to upgrade your PTAC system.
🏨 How long does PTAC last
Before we dive into replacement indicators, it’s important to understand the typical lifespan of PTAC equipment.
Most commercial grade PTAC units have a lifespan of about 10 to 15 years. Actual lifespan depends on several factors including:
✔Usage levels
✔ Quality of maintenance
✔ Weather conditions
✔ Quality of installation
✔ Patterns of occupancy
✔ Design of equipment
A PTAC in a heavily used hotel room may be used far more often than a unit serving a sparsely used office space. Similarly, equipment is often subjected to more challenging operating conditions in coastal properties.
Older PTAC units can still work but efficiency and performance tend to gradually diminish over time. Many property owners are unaware of how much performance has declined until a new unit is installed. This is one of the reasons why age alone may become an important factor in replacement decisions.
Maintenance practices have a significant impact on the life of equipment and the performance of the HVAC system. Industry organisations such as the Air-Conditioning, Heating, and Refrigeration Institute (AHRI) offer a trove of educational information about HVAC equipment performance, maintenance and technology standards.
⚠️ Routine Repairs Are Becoming The Norm
If you find you are repairing it more and more often this is one of the clearest signs you should think about replacing it.
All HVAC systems require routine maintenance eventually. Service calls from time to time are normal. But the economics often start to lean toward replacement when maintenance teams find themselves facing the same PTAC unit again and again.
Common repair problems are:
🔧 Compressor breakdowns
Fan motor problems.
🔧 Issues with the control board
🔧 Leaks of refrigerant
🔧 Thermostat malfunction
🔧 Failure of electrical components
These repairs may seem easy to deal with on their own. But over the years, as repair bills mount, it can be surprisingly costly to keep old equipment running.
Many facility managers have found a simple rule useful: When the cost of major repairs is a significant percentage of replacement costs, then replacement is often the smarter long-term investment.
💰 Utility Bills Going Up For No Reason
Energy efficiency tends to decay gradually.
This is problematic because property owners often do not notice the change immediately.
Older PTAC systems tend to use more electricity than newer equipment and also deliver less comfort. Over time, parts wear out, the efficiency of heat transfer drops, and mechanical systems become less effective. Heating and cooling is one of the largest consumers of energy in buildings, according to the U.S. Department of Energy. Even modest losses in HVAC efficiency can significantly increase annual utility costs. Small efficiency losses can mean big expenses for hospitality properties with hundreds of PTAC units throughout an entire building. If utility costs are rising, but occupancy and weather conditions are stable, ageing PTAC equipment may be part of the problem.
Heating and cooling are among the biggest energy consumers in buildings, according to the U.S. Department of Energy. A hidden cost property owners underestimate over time is that of ageing HVAC equipment. Many newer PTAC systems will provide significant gains in efficiency over equipment installed 10 years or more ago.
Here’s a look at how you can make your home more energy efficient with your heating and cooling systems: https://www.energy.gov/energysaver/heating-and-cooling
🌡️ Room temperatures that vary
Comfort complaints are often a good indicator of equipment condition.
Before maintenance teams identify mechanical issues, occupants and guests tend to identify comfort problems.
Common complaints are:
❌ Can't set temperature in room
❌ Uneven heating effect
❌ Bad air flow
❌ Too much moisture
❌ Hot and cold zones
❌ Regular cycling
Older PTAC systems are known to have difficulty maintaining steady comfort levels as the internal components age and become less efficient.
In a hospitality context, these comfort issues can directly impact guest satisfaction, online reviews and repeat business. The rooms may not be comfortable even after the thermostat is changed and this can irritate residents of apartments.
If it’s difficult to keep temperatures consistent, replacement is often a better choice than future repairs.
🔊 Loud Noise Level During Running
Noise is one of the most common complaints with ageing PTAC systems.
Older PTAC units were never completely silent, but increasing noise levels can indicate wear in critical components.
Typical sounds are:
🔊 Panels Rattling
🔊Compressors that vibrate
Fan motor noise.
🔊 Airway obstruction
🔊 Buzzing electrical components.
🔊 Relays clicking
For hotels and extended-stay properties, noise complaints can be especially detrimental, as sleep quality is directly related to guest satisfaction.
Thanks to improvements in compressor technology, fan design, insulation and vibration control, most newer PTAC systems are a lot quieter than the older models.
Replacing an ageing noisy unit often means an immediate improvement in the occupant experience.
❄️ Low Cooling Efficiency in Peak Summer Condition
PTAC units work well in moderate weather, but they get overwhelmed when the weather turns extreme.
Old compressors, dirty coils, low or high refrigerant charges and worn parts can all decrease cooling capacity.
Signs that cooling performance is falling include:
🌡 Longer time periods
🌡 Unable to get thermostat settings
🌡 Hot discharge air
🌡 Reduced air flow
🌡 Overheating frequently
🌡 Higher humidity
If rooms routinely are uncomfortable in the heat of summer, it may be more practical to replace ageing equipment than to try to keep it running.
In many cases, modern PTAC systems provide much better cooling performance while using less energy.
🔥 Reduced Heating Performance
Older PTAC units often have complaints about heating.
Heating elements in electric heat models can wear out over time. Compressor wear, refrigerant problems or component degradation can cause PTAC heat pump systems to lose efficiency.
Occupants can report:
🔥 Long heating time
🔥 Poor heating performance
🔥Uneven temperature
🔥 Drafts ice cold
🔥 Constant thermostat adjustments
In colder climates dependable heating performance is important. If maintenance is done and heating complaints continue to rise , it may be more cost effective in the long run to replace .
🌎 Old Refrigerants Could Be Extinct Like the Dodo
The HVAC industry is always changing with regard to refrigerant technology. Many older PTAC systems use refrigerants that are being phased out or are becoming more expensive to service. The Environmental Protection Agency continues to support industry efforts to transition to refrigerants with a lower Global Warming Potential as part of broader environmental initiatives.
Modern PTAC equipment are increasingly adopting refrigerants such as R-32, which have a lower environmental impact and are more in line with the future industry direction. For property owners planning long-term equipment investments, upgrading to modern refrigerant platforms may reduce future service concerns while supporting sustainability initiatives.
The HVAC industry is in the process of moving to refrigerants that have less of an impact on the environment. The U.S. Environmental Protection Agency (EPA) continues to support the industry’s transition to lower Global Warming Potential (GWP) refrigerants through ongoing regulatory efforts and environmental programs.
🏢Hospitality Properties Have Unique Replacement Considerations
Hotels, motels, resorts and extended-stay properties generally make replacement decisions before other building types.
Why not? - Because guest comfort has a direct impact on revenue.
Frequent complaints about a PTAC system can affect:
⭐ Customer Reviews
⭐ Rate of occupancy
⭐ Customer loyalty
⭐ Image de marque
⭐ Maintenance cost
⭐ Staff Workloads
Many hospitality operators are now implementing programs of proactive replacement rather than waiting for catastrophic failures to occur.
Strategic replacement of units often minimises disruption and enhances the overall performance of a property.
📈 Return on Investment Evaluation
One of the common mistakes property owners make is to look only at replacement cost.
The more important question is: “What will the replacement save over time?”
Upgrading to a new PTAC system may offer benefits including:
💰 Reduced utility bills
🔧 Reduced maintenance costs
🌡 Better comfort
🔊 Quieter
🌎 Improved environmental performance
☆ Higher occupant satisfaction
📉 Less Downtime
When you take the entire equipment lifecycle into consideration these benefits often justify an earlier replacement than many owners anticipate.
🏆 Modern PTAC Technology Has Come a Long Way
PTAC units today are very different from those installed ten or fifteen years ago.
Modern equipment typically has:
⚡ Better efficiency ratings
🔇 Low noise
📱 Digital controls
♻️Heat pump technology,
🌎 R-32 refrigerants
🌡 Better temperature management
📊 Energy management options
These advances allow property owners to increase comfort and reduce operating costs. Upgrading older PTAC equipment can provide immediate improvements that occupants can see and feel.
Further, many of today’s PTAC systems include efficiency upgrades consistent with ENERGY STAR recommendations, which continue to promote advanced HVAC technologies that reduce energy use while maintaining comfort indoors.
👋 Jake’s Parting Thoughts
PTAC systems seldom all fail at once. More often they deteriorate slowly, with higher energy bills, higher repair costs, more comfort complaints and lower performance.
The trick is knowing when the cost of repairs and inefficiencies in operation start to overtake the value of keeping older equipment in service. If your PTAC units are more than ten years old, are requiring repairs with increasing frequency, are having difficulty maintaining comfort, or are contributing to rising utility costs, replacement is worthy of serious consideration.
PTAC technology today brings dramatic improvements in efficiency, comfort, reliability and sustainability. For hotels, apartments, senior living, offices and other commercial properties, updating old equipment can often bring benefits far beyond just heating and cooling. Sometimes the most expensive PTAC is the one that you keep fixing. And sometimes the best investment is to replace it before it becomes a larger problem.
Jake Lawson
HVAC Insights Specialist
The Furnace Outlet
