Professional Commercial Rooftop HVAC Unit Installation (RTUs) for Massachusetts and New Hampshire

For businesses with large buildings, especially those in need of centralized heating, cooling, and ventilation, rooftop HVAC units (commonly known as RTUs) are often the go-to solution. At Denommee Plumbing HVAC & Electric, we specialize in the installation of these heavy-duty systems, providing you with high-quality service and reliable performance that will keep your business comfortable year-round.

Why Choose RTUs for Commercial Buildings?

When it comes to ensuring the comfort and functionality of your commercial space, one of the most important components is a reliable HVAC system. Rooftop HVAC units are a popular choice for commercial spaces because they offer a variety of advantages:

Space-Saving: By placing the unit on the roof, you free up valuable space inside the building, keeping the floor plan uncluttered.

Centralized System: RTUs provide both heating and cooling, making them efficient for large spaces that need consistent temperature control across multiple areas.

Energy Efficiency: Modern RTUs are designed to be energy-efficient, offering long-term savings on utility bills.

Durability: Built to withstand the elements, RTUs are perfect for commercial applications that require heavy-duty equipment that works reliably year-round.

Our Professional Installation Process

At Denommee Plumbing HVAC & Electric, we don’t just install any HVAC system—we specialize in the installation of large commercial rooftop units. Here’s how we approach the installation process to ensure it’s done right:

1. Site Assessment & Preparation

Before any work begins, our team will conduct a thorough assessment of your roof and HVAC needs. We check the structural integrity of the roof to ensure it can handle the weight of the RTU and any associated equipment. This step also includes determining the optimal location for the unit, taking into account airflow, ductwork placement, and electrical connections.

2. Lifting and Positioning the Unit

Due to their size and weight, most commercial RTUs require a crane to lift and position them on the roof. Our experienced technicians manage the logistics of this process, ensuring that the unit is safely transported to its designated location and securely mounted on the roof.

3. Electrical and Control System Connections

Once the unit is in place, we handle all electrical connections, ensuring that the RTU is properly integrated with your building's power supply. Our team installs the necessary disconnect switches, control wiring, and thermostat systems so you can easily manage and monitor the unit’s operation.

4. Ductwork & Refrigerant Line Installation

Proper airflow is key to an RTU’s performance. We’ll ensure that your supply and return ductwork is correctly connected and properly sealed to avoid energy loss. Additionally, our technicians install and test the refrigerant lines, making sure the system is fully charged and running at optimal efficiency.

5. System Testing & Calibration

Once the RTU is fully installed, we conduct a series of tests to make sure the system is functioning properly. This includes checking the refrigerant levels, inspecting airflow, and ensuring that the system is running as it should. We also fine-tune the system to meet the specific needs of your building, making adjustments to maximize comfort and efficiency.

6. Ongoing Maintenance & Support

Our relationship with our clients doesn’t end once the installation is complete. We offer ongoing commercial HVAC maintenance and repair services to ensure your rooftop HVAC unit continues to operate at peak performance. Whether it's cleaning filters, inspecting components, or checking refrigerant levels, we’re here to help you get the most out of your RTU for years to come.

Why Choose Denommee Plumbing HVAC & Electric?

When you choose Denommee Plumbing HVAC & Electric for your commercial HVAC needs, you’re choosing a company that is committed to delivering exceptional service and quality. Here's why we're the right choice for your RTU installation:

Experienced Technicians: Our team has years of experience in installing and servicing large commercial HVAC systems, including RTUs. We are skilled in handling the complexity and scale of these installations.

Comprehensive Services: We provide everything from site assessments and equipment installation to ongoing maintenance and troubleshooting.

Energy Efficiency: We are committed to providing solutions that are not only reliable but also energy-efficient, helping you reduce your operating costs over time. We offer energy efficient commercial heat pump rooftop HVAC unit upgrade and replacement installation.

Customer-Centered Approach: At Denommee Plumbing HVAC & Electric, we prioritize customer satisfaction. From the first consultation to the final system test, we work with you to ensure your needs are met.

Commercial Rebate Experts: At Denommee Plumbing HVAC & Electric, we are your local Mass Save Heat Pump Installer Network members and National Grid commercial heat pump installers that are able to help our commercial customers access rebate commitment letters for qualifying commercial hvac upgrades with rebates up to $4,500/ton of cooling available.

Get Your RTU Installed Right

If you’re in need of a large commercial HVAC solution in Massachusetts or southern New Hampshire, Denommee Plumbing HVAC & Electric is here to help with your rooftop HVAC unit installation. Our team is ready to assist you every step of the way—from initial consultation and design to installation and ongoing service. With in-house electrical and plumbing departments, we do not subcontract any of the vital trade work. Having all three trades under one roof allows Denommee Plumbing, HVAC & Electric to offer commercial property owners, facilities managers, contractors and developers complete solutions that ensure the work is done efficiently with the highest standard of workmanship. Don’t wait for uncomfortable temperatures or costly energy bills. Contact Denommee Plumbing HVAC & Electric today to schedule your RTU installation, and let us help you create a comfortable, efficient environment for your business.

Our commercial HVAC service areas include eastern Massachusetts areas such as Boston, Cambridge, Brookline, Arlington, Burlington, Woburn, Bedford, Billerica, Tyngsborough and surrounding towns, our New Hampshire commercial HVAC service areas include Nashua, Hudson, Merrimack, Brookline and Hollis and the Soughegan Valley.

Contact our team via phone 978-649-8886 or email This email address is being protected from spambots. You need JavaScript enabled to view it. to request your no-cost rooftop unit RTU replacement/installation quote.

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