Spring is a great time to consider scheduling professional commercial HVAC maintenance for your Denver, CO business. With summer right around the corner, it’s important to be ready for the heat, especially when you have customers to keep comfortable.
Our experts at Horizon Services are a top local HVAC team to perform your springtime commercial air conditioning service, ensuring your team can focus on the task at hand instead of dreaming about an escape to Cherry Creek. Follow these steps to prepare your system for warmer temperatures and keep it reliable all season.

Why Spring HVAC Maintenance Matters for Denver Businesses
Commercial air conditioning maintenance is a necessity for business owners in the Denver area. Whether you’re a customer-facing business or just need to keep your employees safe and comfortable in the hotter months, having your commercial HVAC repaired and serviced annually helps you avoid shutdowns, improve energy efficiency, and keep your business cool when the Denver summer temperatures climb above 90°F.
Top Signs Your Commercial HVAC Needs Pre-Summer Attention
How do you know when you need a pre-summer HVAC tune-up? While we recommend having your system inspected and maintained each year, whether you notice a problem or not, there are a few clear signs that you’re in need of commercial HVAC services, including:
- Inconsistent cooling
- AC short or long-cycling (constantly switching on and off or running indefinitely)
- Weak airflow from HVAC ducts
- Issues with HVAC efficiency in your commercial building
- High humidity inside the building while running the AC
- Strange noises from the air conditioner
- Musty or burning odors from HVAC ducts
- The system requires frequent repairs
Steps To Prepare Your Commercial HVAC System for Warmer Weather
Preparing an HVAC system for summer doesn’t need to be a complex process. By following a few simple maintenance tips, you can enter the warmest months of the year with confidence.
Change Air Filters and Clean Components
Regular air filter cleaning and replacement are essential processes. When an air filter becomes clogged with materials like dust, it leads to various mechanical and cost problems due to the system having to work harder.
When your filter is dirty, cold air backs up into the system, disrupting the heat transfer process and causing the internal refrigerant to become even colder. This freezes the evaporator coil, making your HVAC push out warmer air. Our team will replace your HVAC air filters if they’re dirty.
Check Refrigerant Levels
When your HVAC system is low on refrigerant, you’ll notice symptoms like warm air, frozen coils, ice on the lines, or even strange noises coming from the system. For this reason, it’s important to check refrigerant levels at least once a year.
Our commercial HVAC service technicians will first check your refrigerant levels by using pressure gauges. Next, they’ll perform a superheat test, which measures the differential between the actual temperature of the refrigerant vapor line and the saturation temperature at that same pressure level. This helps determine if there’s too little refrigerant. Subcooling tests, on the other hand, subtract the saturation temperature from the temperature of the refrigerant line near the condenser, which tells the technician if the system has too much refrigerant.
Inspect Ductwork for Leaks or Damage
If your ductwork is in poor condition, even a perfectly-maintained air conditioner won’t be able to effectively cool your space. Keep an eye out for visible signs of damage to your ductwork, and make sure your Denver HVAC system inspection covers your entire duct network.
Test Thermostats and Controls
One HVAC component that often needs maintenance is the thermostat. From simple battery changes to replacement, ensuring that the thermostat is functioning properly is critical to workplace comfort. We’ll check and calibrate your existing thermostat or replace it if needed to keep things comfortable.
Schedule a Professional HVAC Tune-up
While changing air filters and thermostat batteries are easy enough DIY tasks, there’s no replacement for the skill and experience of a professional HVAC maintenance team. They have the skills to inspect, clean, lubricate, and repair the entire system, ensuring high efficiency using an HVAC maintenance checklist for businesses.

How Regular Maintenance Saves On Energy Costs
One of the top energy-saving HVAC tips for businesses is to invest in regular maintenance of the system. When your air conditioner is running smoothly, it consumes less energy, meaning more money in your pocket when it’s time to pay your utility bills each month. For example, clogged filters cause the motor to work harder to push air through the system. This increases component breakdown because the increased movement causes continuous wear, which also leads to higher utility bills.
The Risks of Neglecting Commercial HVAC Maintenance
If you don’t keep up with commercial HVAC maintenance, you risk several issues, including:
- Increased energy costs
- Reduced HVAC effectiveness
- Higher risk of HVAC shutdowns and damage
- Shortened AC lifespan
- A warm, humid, or otherwise uncomfortable space
Why Work With a Professional HVAC Contractor in Denver
While you can perform basic HVAC maintenance tasks yourself, such as changing an air filter, the best way to ensure the longevity and efficiency of your system is to work with a professional commercial HVAC team.
Our contractors bring extensive HVAC knowledge to every project, identifying minor issues, tuning components, and making sure your system runs reliably all summer long. Professional services ultimately save you money, time, and stress by preventing future repairs, potential shutdowns, and reducing overall energy consumption.

Keep Your Business Cool and Efficient All Summer
Running through this HVAC checklist will extend the lifespan and ensure the optimal functionality of your system. For even more savings and peace of mind, we recommend investing in annual HVAC maintenance from the pros at Horizon Services. We’ve served the Denver community for almost 30 years, and we’ve contributed to the upkeep of hundreds of HVAC systems. Contact us today for a consultation, and we’ll set up a spring maintenance session for your commercial HVAC system so that it can provide comfort for the entire year.