by Unico Marketing Team | 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 Unico Marketing Team | 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 Unico Marketing Team | 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.
by Unico Marketing Team | Jun 4, 2026 | Uncategorized
As energy costs continue to rise, more homeowners are searching for efficient ways to heat and cool their homes. One of the fastest-growing trends in HVAC is the adoption of heat pumps, which provide both heating and cooling from a single system while using less energy than many conventional options.
The benefits are clear. Heat pumps can improve efficiency, reduce utility bills, and provide year-round comfort. But choosing a heat pump is only part of the solution. Homeowners should also consider how conditioned air is delivered throughout the home.
Why HVAC Distribution Matters
Even the most advanced heat pump can struggle to provide consistent comfort if the air distribution system is not designed properly. Conventional ductwork can be difficult to install in older homes, historic properties, and renovation projects where space is limited.
Large ducts often require major construction, which can impact a home’s design, architectural details, and usable living space. They can also be inefficient. According to industry estimates, conventional duct systems can lose up to 40% of conditioned air through leaks, poor sealing, and heat transfer before it ever reaches the living spaces.
The Unico System was designed to minimize those losses. With its compact, tightly sealed duct system, air leakage is typically less than 5%, helping homeowners get more from their heating and cooling equipment while improving overall system efficiency and comfort.
Pairing Heat Pumps with The Unico System
The Unico System offers a flexible alternative for homes where conventional ductwork is not practical. Its small, flexible ducts can be routed through existing walls, ceilings, and other tight spaces with minimal disruption.
When paired with a heat pump, The Unico System helps homeowners enjoy the efficiency of modern HVAC technology while maintaining the character of their home. The system also delivers even temperatures throughout the living space and provides excellent humidity control, helping create a more comfortable indoor environment.
Ideal for Any Home Type
Every home has unique heating and cooling challenges. Older homes may have limited space for ductwork, historic homes often require preservation of architectural details, and custom homes frequently prioritize design flexibility. The Unico System adapts to these needs, providing an efficient comfort solution without the space requirements of conventional ductwork.
The Future of Home Comfort
As heat pump adoption continues to grow, homeowners are looking for solutions that combine efficiency, flexibility, and comfort. By pairing a heat pump with The Unico System, homeowners can achieve all three while avoiding the limitations of conventional ductwork.
If you’re exploring heat pump options for a renovation, historic home, or custom home project, the right air distribution system can make all the difference.
Find a Unico Preferred Contractor near you or contact our team to learn more about bringing The Unico System into your next project.
by Unico Marketing Team | May 20, 2026 | Historic Preservation
As Historic Preservation Month comes to a close, we sat down with Unico’s in-house preservation expert, Tom Taylor, to talk about the challenges of retrofitting HVAC systems into older homes and why The Unico System has become a trusted solution for preservation projects.
Tom has spent more than 30 years with Unico, serving in roles ranging from PR to historic home coordination. His deep appreciation for historic architecture, combined with decades of industry experience, gives him a unique perspective on preserving older spaces while bringing them modern comfort.
Here’s what he had to say.
Why Historic Preservation Matters
- From your perspective, why is historic preservation important today?
Tom: To truly understand our present and map our future, we MUST understand our past. Preserving places and structures – whether in a historical or design context – allows us to “time travel” – to literally step into the spaces and buildings of the past to experience them in the context of the now.
- Over the years, have you seen attitudes toward preserving historic buildings change? If so, how?
Tom: Every generation brings their own perspective to preservation, so it’s only natural that as people change, preservation does too. Thankfully, there are longstanding organizations like the National Trust for Historic Preservation and the Frank Lloyd Wright Conservancy and others who are dedicated to preserving historic and architecturally significant structures for generations yet to come.
The HVAC Challenge in Older Homes
- What makes HVAC installation especially challenging in historic homes and buildings?
Tom: Preservationists must walk a fine line, especially when it comes to public and shared spaces. They have the challenge of making spaces comfortable and useful by contemporary standards while still preserving historic structural and aesthetic design elements. HVAC makes that difficult because it must be retrofitted into spaces that were never designed for it – because it simply didn’t exist in that space’s original timeline.
- How does The Unico System help solve problems that traditional HVAC systems often create in preservation projects?
Tom: Simply put, it fits where traditional HVAC systems can’t, avoiding the structural disruption “shoehorning” traditional systems into a building requires. Additionally, it’s more aesthetically pleasing than bulky dirty rectangular diffusers or room-by-room “wall wart” systems. As an added benefit, The Unico System also provides superior comfort and energy efficiency.
- Are there specific architectural styles or historic properties where The Unico System works particularly well?
Tom: The fact that it can fit into the smallest of spaces means that there is no particular architectural style that cannot benefit from The Unico System. From Colonial and Federalist to Victorian and Mid Century Modern – retrofitting Unico will not disrupt the original design and aesthetic elements of your home.
Why Preservationists Choose Unico
- Can you share a memorable historic preservation project you’ve worked on or heard about involving The Unico System?
Tom: Three structures in Washington, DC involving President Lincoln: his cottage, the retreat where he took respite during the Civil War; Ford’s Theater – the site of his assassination; and the Peterson Home, across from the theater where Lincoln died. We’re very proud that visitors who come to soak up the history of these iconic places can do so in absolute comfort.
- What are some common mistakes contractors or homeowners make when retrofitting HVAC into older buildings?
Tom: “Shoehorning” a system in – e.g. dropping ceilings, building chases, soffits, or bulkheads to conceal ductwork. None of this is necessary with The Unico System.
- How do preservationists typically react when they learn about The Unico System?
Tom: They love it! Because of the challenges presented by conventional or stop-gap HVAC solutions, preservationists typically cringe when it comes to these mechanical add-ons. But once they learn of The Unico System, they understand there’s a way to let comfort fit in.
- In your opinion, what features of The Unico System are most valuable for maintaining the integrity of historic interiors?
Tom: The system’s smaller indoor unit, duct size and unobtrusive diffusers that can blend into any decor.
Unico’s Role in Historic Preservation
- Looking back on your years with Unico, what role do you think the company has played in the historic preservation space?
Tom: We’re very proud of the fact that we are the only HVAC system recommended by the National Trust for Historic Preservation.
- Is there anything else you think people should understand about preserving older buildings and integrating modern systems into them?
Tom: Only that there IS a way to preserve historic structures while providing 21st century comfort. The Unico System is that way.
Whether you’re a homeowner, contractor, architect, engineer, or builder working on historic property, The Unico System makes it possible to preserve architectural integrity without sacrificing comfort.
Not sure how a high-efficiency HVAC system could fit into your project? Unico offers a free design service to help you visualize how the system can work within your space.
The Unico System | Comfort Fit For Your Projects
