Rooftop HVAC Services in Connecticut & New York
Alliance delivers complete rooftop HVAC solutions — from installation and replacement to ongoing maintenance and repairs. We install premium equipment, coordinate seamless projects, and provide long-term support so your building stays efficient, reliable, and comfortable year-round.
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Other Commercial HVAC Solutions
New Construction HVAC
We have the experience, facilities and resources to fabricate and install ductwork, hydronic, chilled water and control systems for any new project.
Tenant Fit-Outs & Interior Alterations
Restaurants, Data Centers, retail spaces, etc. Alliance has the experience to manage timelines by working alongside contractors and other trades.
Building Automation & Control Systems
Today’s facilities require smart controls to balance comfort with efficiency. Alliance designs and installs building automation systems that integrate heating, cooling, ventilation, and lighting into a single, easy-to-manage platform. Our controls improve energy savings while giving property managers precise oversight.
Equipment Replacement & Upgrades
Let our retrofit experts help you select equipment and controls that will save energy and increase productivity by minimizing downtime.
Complete Solutions for Rooftop HVAC Systems
Rooftop units (RTUs) are the backbone of heating and cooling for many commercial buildings. Alliance provides installation, replacement, repairs, and maintenance for rooftop systems across Connecticut and New York, ensuring businesses stay comfortable and energy-efficient year-round. Whether you need a new system for a construction project or dependable service for an existing unit, we deliver equipment and support built to last.
Call 203.335.9464 today to schedule rooftop unit service with Alliance.
We Install & Service Rooftop Units
From new installations to emergency repairs, Alliance provides full-service support for rooftop HVAC systems. Our technicians handle everything — crane lifts and unit replacements, fast repairs for breakdowns, and routine maintenance that keeps equipment running at peak performance. Whether you’re outfitting a new building or extending the life of an existing RTU, we make sure your system is efficient, reliable, and ready for the seasons ahead.
Installation & Replacement
Installing rooftop units requires precision planning, heavy-lift coordination, and expertise to integrate the equipment into existing structures. Alliance handles the full process — from equipment selection to crane placement and duct integration.
For new construction projects, we work alongside developers and contractors to make sure RTUs are sized correctly for occupancy loads and installed on schedule. For replacements, we provide turnkey solutions that minimize downtime and disruption.
Repairs & Maintenance
A rooftop unit breakdown can disrupt business quickly. Alliance offers fast, reliable repairs to restore comfort and prevent costly downtime. Our technicians carry the tools and parts needed for most common RTU issues, from compressor failures to airflow imbalances.
To prevent emergencies, we also provide routine maintenance plans that include inspections, filter changes, coil cleaning, and performance checks. With proactive service, RTUs last longer, run more efficiently, and avoid unexpected failures.
Premium Rooftop Unit Equipment
Not all rooftop units are created equal. Alliance installs high-quality, durable RTUs designed to perform through the Northeast’s humid summers and freezing winters. We partner with leading manufacturers to provide equipment that offers:
- Energy-efficient performance that lowers operating costs.
- Reliable operation with advanced controls for zoning and comfort.
- Durable construction suited for coastal environments where salt air and humidity accelerate wear.
By choosing proven equipment and installing it to exact standards, we give property owners and managers peace of mind that their systems will hold up for the long run.
Call 203.335.9464 today for a consultation with one of our professionals.
Where Rooftop Units Work Best
Rooftop units are a go-to choice for many commercial properties because they save indoor space, provide straightforward service access, and can be scaled to fit buildings of almost any size.
Office Buildings – RTUs deliver consistent comfort floor-to-floor while keeping mechanical equipment out of sight and out of the way. In multi-story properties, zoning controls allow managers to fine-tune conditions across different departments or tenants.
Retail Centers & Restaurants – With constant door traffic and glass storefronts, these spaces face unique heating and cooling demands. RTUs offer flexible capacity and easy service access, helping property managers reduce downtime and maintain customer comfort.
Warehouses & Distribution Facilities – High ceilings and large open layouts call for powerful systems. RTUs provide large-scale airflow solutions while staying easy to maintain thanks to their rooftop placement.
Schools & Municipal Buildings – From classrooms to gyms, RTUs make it possible to deliver reliable heating and cooling without taking up valuable indoor square footage. In Connecticut and New York, many public projects rely on rooftop systems for both accessibility and long-term value.
Because they are installed outdoors, RTUs also free up interior space, simplify service calls, and reduce noise inside the building. For property owners in Connecticut and New York, they remain one of the most practical and cost-effective options for managing comfort across diverse facilities.
Local Considerations for RTUs
Every rooftop installation comes with challenges shaped by the building and its environment. Along the shoreline, salt air and moisture can shorten the life of poorly protected equipment, which is why Alliance installs corrosion-resistant RTUs designed to withstand coastal exposure. In dense city settings, rooftop space is often limited, requiring careful placement and staging so systems remain serviceable after installation. Seasonal extremes in the region also demand reliable performance: units must switch seamlessly from cooling humid summers to heating through freezing winters without efficiency loss. And on older buildings, structural reinforcement may be necessary to support today’s larger, more advanced equipment.
By anticipating these factors, Alliance ensures rooftop units aren’t just installed — they’re prepared for the conditions they’ll face for years to come.
Alliance Rooftop Solutions, Built to Endure
Installing or servicing rooftop HVAC isn’t just about lifting equipment onto a roof. It takes foresight, coordination, and the right equipment to ensure reliable results. Alliance has been working with rooftop units for decades, giving property owners and contractors confidence that the job will be done right.
✓ Precision Installations – From new builds to replacements, our crews manage every step of the process — crane lifts, rigging, curb placement, and integration with ductwork and controls. By coordinating with other trades, we keep projects moving without costly delays.
✓ Reliable Equipment – We install RTUs from trusted manufacturers known for efficiency, durability, and advanced controls. Each system is selected to match the building’s occupancy, layout, and long-term operating goals, and tested to ensure smooth performance before turnover.
✓ Full Lifecycle Support – Rooftop systems are exposed to the elements, and without proper upkeep, they can become a major liability. Alliance provides maintenance programs and responsive 24/7 repairs that extend equipment life, lower operating costs, and minimize downtime.
✓ Local Knowledge – In coastal areas, salt and humidity can eat away at rooftop equipment. In cities, space constraints and noise ordinances shape how units are placed and serviced. Our experience across Connecticut and New York means we anticipate these challenges and install systems prepared to handle them.
When you partner with Alliance, you get more than a contractor — you get a team dedicated to protecting your investment, keeping your facility comfortable, and delivering HVAC solutions that stand up to the realities of the region.
Call 203.335.9464 or schedule service online today to start your rooftop unit project with Alliance.
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