by Aliya Coons | Jul 10, 2026 | Uncategorized
When homeowners think about replacing their HVAC system, many assume that a larger unit will provide better comfort and performance. After all, shouldn’t a bigger system cool or heat a home faster?
In reality, oversized HVAC systems can create a variety of problems, including poor humidity control, uneven temperatures, and higher energy costs. That is why proper HVAC sizing is one of the most important factors in achieving year-round comfort, efficiency, and long-term system performance.
The Problem with Oversized HVAC Systems
Conventional HVAC systems are often selected based on square footage alone. However, every home has unique heating and cooling requirements influenced by insulation, window placement, air leakage, occupancy, and local climate conditions.
When an HVAC system is too large for the space, it tends to short cycle, turning on and off frequently because it reaches the thermostat setpoint too quickly.
Although this may seem like a good thing, short cycling prevents the system from operating efficiently and can lead to several issues.
Problems Caused by an Oversized HVAC System
An oversized system can result in:
- Uneven temperatures throughout the home
- Increased wear and tear on equipment
- Higher energy consumption
- Reduced equipment lifespan
- Poor humidity control
- Less consistent indoor comfort
A properly sized HVAC system runs longer, operates more efficiently, and delivers steady, even comfort throughout the home.
Why Humidity Control Matters
Comfort is about more than temperature. The amount of moisture in the air plays a major role in how comfortable your home feels.
An oversized air conditioner may cool a room quickly, but it often shuts off before it has enough time to remove excess humidity. As a result, the home may reach the desired temperature while still feeling damp, sticky, or uncomfortable.
This is especially important during the summer months when high humidity can affect indoor comfort, reduce indoor air quality, and contribute to mold and mildew growth.
Proper humidity control creates a healthier indoor environment while helping homeowners feel comfortable at higher thermostat settings, which can also improve energy efficiency.
The Importance of a Manual J Load Calculation
The best way to determine the correct HVAC system size is through a Manual J Load Calculation.
Rather than guessing or simply replacing an existing unit with one of the same capacity, professional load calculations evaluate the home’s actual heating and cooling needs.
What Factors Are Included in a Load Calculation?
A Manual J Load Calculation considers factors such as:
- Home construction
- Insulation levels
- Window orientation and placement
- Air infiltration
- Occupancy patterns
- Local and regional climate conditions
The goal is simple: match the HVAC system to the home’s actual requirements.
Accurate HVAC sizing helps ensure consistent comfort, improved efficiency, lower operating costs, and longer equipment life.
Proper HVAC Sizing Starts with Proper Design
Choosing the right HVAC system is about much more than selecting equipment. It begins with understanding the home’s unique characteristics and designing a system that delivers the right amount of heating and cooling.
At The Unico System, every successful installation starts with proper design. That is why we offer a free HVAC design service to help contractors, architects, builders, and homeowners determine the best solution for their project.
Our design team performs a professional load calculation while evaluating the home’s size, construction, insulation, window placement, and local climate conditions. This information allows us to recommend the appropriate system size for optimal comfort, efficiency, and long-term performance.
Once the load calculation is complete, our team can also provide recommendations for:
- HVAC system sizing
- Duct layout
- Supply outlet placement
- Air distribution design
By designing the system before installation, homeowners can avoid the common problems associated with oversized or undersized HVAC equipment.
Benefits of Proper HVAC Sizing
When an HVAC system is correctly sized, homeowners enjoy benefits that extend well beyond energy savings.
Proper HVAC sizing provides:
- More consistent temperatures throughout the home
- Better humidity removal
- Improved indoor air quality
- Lower monthly energy bills
- Longer equipment lifespan
- Reduced maintenance needs
- Greater overall comfort year-round
Rather than cycling on and off constantly, a properly sized system runs as intended, delivering balanced airflow and maintaining consistent indoor conditions.
The Bottom Line
When it comes to HVAC design, bigger is not better.
An oversized HVAC system may seem like it will cool or heat a home faster, but it often leads to short cycling, poor humidity control, increased energy usage, and unnecessary wear on the equipment.
The key to long-lasting comfort is proper HVAC sizing based on a professional load calculation and a thoughtfully designed air distribution system.
That is the philosophy behind The Unico System—delivering comfort by design, not by oversizing.
If you’re planning a new construction project, renovation, or HVAC replacement, take advantage of Unico’s free design service. Our team can perform a professional load calculation and recommend the ideal system size, duct layout, and outlet placement to help ensure lasting comfort, efficiency, and performance.
by Aliya Coons | Jul 4, 2026 | Uncategorized
Celebrating America’s 250th: Proudly Manufacturing The Unico System in the USA
In 2026, the United States celebrates an extraordinary milestone-250 years of independence. The Semiquincentennial is more than a reflection of our nation’s history; it’s a celebration of the innovation, resilience, and craftsmanship that continue to define America today.
At Unico, Inc., we’re proud to be part of that story.
Since 1985, we’ve proudly manufactured The Unico System, where American ingenuity, skilled craftsmanship, and a commitment to quality come together to create an innovative HVAC solution trusted by homeowners, contractors, architects, and engineers across North American, and beyond.
Building on an American Tradition
For 250 years, American manufacturing has driven innovation, strengthened communities, and fueled economic growth. Today’s manufacturers continue that legacy by developing products that solve real-world challenges while supporting American jobs and domestic industries.
That tradition is at the heart of everything we do.
Every Unico System we manufacture reflects the expertise of our engineers, production teams, and quality professionals who are dedicated to building products that perform to the highest standards. Manufacturing in the United States isn’t simply about where our products are made-its about investing in American workers, supporting local communities, like ours in Arnold, MO, and delivering the quality our customers expect.
Innovation That Continues to Move the Industry Forward
Since introducing The Unico System. We’ve challenged traditional thinking of HVAC.
Our small-duct high-velocity technology provides a unique solution for homes and buildings where traditional ductwork isn’t practical. Whether preserving the character of a historic home, designing a custom residence, or upgrading a commercial building, we’ve remained focused on delivering superior comfort without compromise.
Innovation has always been part of our DNA, and every system we manufacture in Arnold reflects our commitment to continuous improvement and American engineering.
Committed to American Quality and Innovation
Our dedication to American manufacturing is reinforced by our commitment to meeting the highest standards of quality and compliance.
The Unico System is officially Build American, Buy America (BABA compliant, ensuring our products meet the requirements for federally funded infrastructure and energy projects while supporting domestic manufacturing.
Choosing The Unico System means choosing:
- Build American, Buy America (BABA) compliance for qualifying federal and state funded projects.
- Proven American quality, backed by decades of manufacturing in Arnold, MO.
- Support for American jobs, domestic manufacturing, and infrastructure growth.
BABA compliance reinforces what we’ve believed since day one-that manufacturing in America matters. It’s a commitment to quality, accountability, and supporting the people and communities that make American manufacturing strong.
A Proud Manufacturing Legacy
For more than 40 years, we’ve proudly manufactured The Unico System in the United States. Our manufacturing journey began in the city of St. Louis, where we built our reputation for innovation and quality. Today, we continue that tradition at our manufacturing facility in Arnold, Missouri.
While our location has evolved over the years, our commitment has remained the same: designing and building innovative HVAC solutions in America.
Every Unico System that leaves our facility represents more than advanced HVAC technology. It reflects the pride, craftsmanship, and dedication of the people who build it.
Celebrating America’s Next 250 Years
As the United States celebrates its 250th anniversary, we’re proud to celebrate the enduring spirit of American innovation and manufacturing.
For more than four decades, The Unico System has been designed and manufactured in the United States, delivering innovative HVAC solutions built by American hands and backed by American quality. Today, out Build America, Buy America compliance further demonstrates our commitment to supporting customers, strengthening domestic manufacturing, and investing in America’s future.
We’re honored to be part of America’s manufacturing story, and we’re excited to continue building on that legacy for generations to come.
Here’s to the next 250 years of American innovation, craftsmanship, and the people who make it all possible.
by Aliya Coons | Jun 22, 2026 | UPC
As director of Customer Service and a third-generation member of the Unico business, Brian Intagliata has spent years working closely with contractors across the country. In honor of Contractor Appreciation Day on June 22, we sat down with him to discuss the important role Unico Preferred Contractors play in delivering exceptional customer experiences and helping drive the company’s success.
The Critical Role of Unico Preferred Contractors
Why Contractors Shape the Customer Experience
Q: Why are Unico Preferred Contractors such an important part of delivering a positive customer experience?
Brian: These are the front-line representatives of not just our product, but our company as well. We count on them to introduce the end user to the product and give them a positive first impression of Unico.
What Makes a Successful Unico Contractor?
Q: What qualities do you see in the contractors who are most successful with Unico products?
Brian: They make the investment to do the trainings, whether it’s online, in the field with our reps / distributors or coming to the factory, they make sure that they know the product and can not only install the product but be able to talk comfortably and confidently to the customers.
Protecting the Quality and Reputation of the Unico Brand
Q: How do Unico Preferred Contractors help us uphold the quality and reputation of the Unico brand?
Brian: Our UPC’s are great companies first and foremost to begin with. They know the value of being responsive and not cutting corners to provide the end users with a great installation and make sure they’re getting what they pay for.
How Contractors Help Drive Continuous Improvement
Feedback from the Field Helps Us Improve
Q: What feedback do we hear most often from contractors about working with Unico?
Brian: The support that we provide. Contractors who have not worked with us before are always surprised by how quickly they can get a hold of someone to get answers and support – from Sales and Marketing to Customer Service.
How Contractor Feedback Shapes Our Products and Services
Q: How do our contractors help us identify opportunities to improve our products, support, or processes?
Brian: We take suggestions from our guys all the time. They’re the ones out there working in the attics, basements and crawlspaces to install our system, so they know firsthand what works for them and what doesn’t and when we have suggestions from the field, we take that very seriously.
Supporting Contractors Through Industry Challenges
Q: What are some of the biggest challenges contractors face, and how does Unico help support them?
Brian: There is no shortage of challenges that contractors face, from rising prices, hiring and keeping good technicians, to government regulation, so we just try to make using our product and getting support for our product as easy as possible. Making sure they can get answers quickly, to providing free services like design service and various trainings. We can’t fix every challenge these guys face, but we can make sure that when they use our product, we are not one of the challenges they have to face.
Why Contractors Are the Foundation of Unico’s Success
The Role Contractors Play in Unico’s Success
Q: How have our Unico Preferred Contractors contributed to the success of Unico over the years?
Brian: They are THE reason for our success. Without them, we would never be where we are at today.
Valuable Resources for Unico Preferred Contractors
Q: What resources or programs have been most valuable to our contractor partners?
Brian: I think over the years our training programs and local reps have been huge resources for them. The reps are out in the field as well, doing trainings, working with contractors on tough projects and being an extension of Unico and this goes a long way with them.
Strengthening Contractor Relationships for the Future
Q: What opportunities do you see for strengthening the relationship between Unico and our Unico Preferred Contractors in the future?
Brian: Just making sure we’re staying in communication and making sure they know they’re being heard with suggestions and maintaining the support they have come to know and expect over the years.
A Message for Contractor Appreciation Day
Q: On Contractor Appreciation Day, what message would you like to share with our Unico Preferred Contractors?
Brian: Thank you! As mentioned above, we would not be where we are without our contractor partners!
Thank You to Our Unico Preferred Contractors
As Contractor Appreciation Day reminds us, the success of the Unico brand has always been built on strong partnerships. From introducing customers to our products and delivering quality installations to providing valuable feedback that helps us improve, our Unico Preferred Contractors play a vital role in everything we do. We are grateful for their trust, expertise, and commitment to excellence, and we look forward to continuing to grow and succeed together for many years to come.
