about us

Our History

Mini-Split Specialist is a company within Hammett Holdings, LLC, built on nearly five decades of HVAC experience.

Formerly known as Roy Hammett Co., LLC, our organization established a strong reputation in Spartanburg, SC as a design-build commercial and industrial HVAC contractor. For 49 years, we designed, fabricated, installed, and serviced traditional heating and cooling systems across a wide range of applications.

As technology evolves, so do we. Today’s buildings demand smarter, more efficient solutions, and ductless and VRF systems represent the future of HVAC design.

Mini-Split Specialist was created to focus entirely on that future, while continuing the same commitment to quality, craftsmanship, and long-term customer relationships that built our name.

We respect where we come from, but we are built for where the industry is going.

Why We Specialize

At Mini-Split Specialist, we made a deliberate decision to focus exclusively

on ductless and VRF systems.

Traditional HVAC companies are spread across

multiple types of equipment, often limiting the

depth of their expertise. Mini-split and VRF

systems require a higher level of design precision,

installation quality, and system understanding to

perform correctly.

By specializing, we are able to deliver better

system design, more accurate installations, and

higher long-term performance for our customers.

This focus allows us to stay at the forefront of

modern HVAC technology while providing

solutions that are more efficient, more flexible,

and better suited for today’s buildings.

We don’t divide our attention across every type of HVAC system.

We focus on one, and we do it exceptionally well.

Our Approach

Designed for Performance. Built for Precision.

1. Evaluate

We assess your space, usage, and comfort

challenges to understand exactly what the

system needs to do. No assumptions, no

one-size-fits-all solutions.

2. Design

We engineer a system based on real load requirements, zoning

strategy, and layout. Proper sizing and placement are critical to

performance, and this is where most systems fail.

3. Install

Clean, precise installation with attention to

every detail, from equipment placement to

line set routing and system commissioning.

4. Optimize

We fine-tune the system to ensure each zone performs

exactly as designed for maximum comfort and efficiency.

The result is a system that doesn’t just run, it performs.

Why Choose

Mini-Split Specialist

Focused Expertise

We specialize exclusively in mini-split and VRF systems. That focus allows us to deliver a level of design, installation, and performance that general HVAC contractors cannot match.

Engineered, Not Estimated

Every system is designed based on real load requirements, zoning strategy, and building layout, not guesswork. Proper design is the foundation of long-term comfort and efficiency.

Cleaner, Quieter, More Efficient Systems

Ductless and VRF systems eliminate duct losses, reduce noise, and deliver precise temperature control in every space.

Built on 49 Years of Experience

Backed by decades of HVAC design and construction expertise, we combine time-tested

fundamentals with modern system technology.

Designed for Long-Term Performance

We don’t install systems to simply run, we design them to perform for years. That means better comfort, lower

operating costs, and fewer issues over time.

We don’t compete on being the cheapest. We compete on delivering the best-performing system you can

install in your space.

DEDICATED TEAM

Mini-Split Specialist was established in 2019 to better serve the evolving needs of our industry and our customers.

Our goal is to lead in the Ductless and VRF space by delivering unmatched professionalism, personalized service, and access to advanced system technology through trusted partners such as, Samsung HVAC, Hisense, Daikin and more.

By focusing exclusively on one type of system, we bring a higher level of precision, craftsmanship, and technical expertise to every installation and service we perform.

Mini-Split Specialist is committed to delivering high-performance systems built on quality products and expert execution, because our customers deserve nothing less.

Our Promise

Through the years, our clients have come to expect a higher standard. When they call, we answer. When we commit, we deliver.

As the industry evolves, we continue to lead with better technology, better design, and better execution.

We don’t miss timelines, and we don’t cut corners. Every project is executed with precision, professionalism, and accountability.

Frequently Asked Questions

With proper maintenance, most ductless mini-split systems will last 15 to 20+ years.

Like any HVAC system, lifespan depends on usage, installation quality, and routine service. When designed and installed correctly, ductless systems often outlast traditional equipment due to fewer mechanical losses and no duct-related strain.

A properly installed mini-split system is not just an upgrade in comfort, it is a long-term investment in performance and efficiency.

Ductless mini-split systems are designed for simple, precise control.

Each indoor unit can be adjusted using a handheld remote or wall-mounted controller, allowing you to set temperature, fan speed, and operating mode with ease. Many modern systems also offer Wi-Fi and smart thermostat integration, giving you full control from your phone or automation system.

Because each unit operates independently, you can create custom comfort zones throughout your home or business.

It depends on the type of system.

Traditional multi-zone mini-split systems typically support up to 5 indoor units per outdoor unit, depending on the manufacturer.

VRF systems are designed for much larger applications and can support dozens of indoor units on a single system, making them ideal for larger homes, commercial spaces, and complex layouts.

If more zones are needed, additional systems can be added to expand capacity.

The right design depends on your space, load requirements, and how each area is used. A properly engineered system ensures every zone delivers consistent comfort and maximum efficiency.

Ductless mini-split and VRF systems offer a more efficient, flexible, and modern approach to heating and cooling.

Zoned Comfort

Each space can be controlled independently, allowing you to heat or cool only the areas you use. No additional zoning systems required.

No Ductwork Required

Eliminates the need for bulky duct systems, making it ideal for homes without existing ductwork, renovations, and space-constrained applications.

Higher Energy Efficiency

Without duct losses and with advanced inverter technology, ductless systems deliver more efficient performance and lower energy costs.

Flexible Installation

Perfect for additions, older homes, garages, offices, and commercial spaces where traditional systems fall short.

Lower Installation Cost in Many Applications

Avoiding ductwork can significantly reduce installation complexity and cost, especially in retrofit or renovation projects.

VRF and ductless systems are designed to operate extremely quietly, often much quieter than traditional HVAC systems.

Indoor units typically run in the low 20–40 dB range, which is comparable to a whisper or light background noise. Because there is no ductwork, you also eliminate the air noise and vibration commonly heard in central systems.

Outdoor units are engineered with advanced inverter technology and variable-speed fans, allowing them to ramp up and down smoothly rather than cycling loudly on and off.

FAQ

about us

Our History

Why We Specialize