High-Efficiency Rooftop Unit (RTU) Replacement

May 1, 2023 | HVAC

RTUs or rooftop HVAC systems are common in commercial buildings. Units ten years and older are not only energy inefficient; these HVAC systems are often nearing the end of their lifespans. It leaves building owners and managers with only a few options: make the hefty investment and install a high-efficiency RTU or replace the worn-out parts in the existing one. Whichever option you choose, CS Mechanical has the skills and knowledge to complete your project. However, we often recommend an RTU replacement. It lowers energy usage costs, which helps offset the overall costs.

HVAC Rooftop Services

Whether you are replacing or repairing your commercial high-efficiency rooftop unit, CS Mechanical can provide the services you need. Here’s a look at some of the services we offer. 

Curb Adapter

Replacing your RTU with a high-energy efficient unit typically involves using curb adaptors. There are multiple reasons why it’s a good idea to use a curb adaptor, including saving time and money.

High energy-efficient rooftop units are typically smaller than older models. It means the new HVAC unit will not fit on the existing curb. Without a proper fit, the HVAC’s supply and return openings may not match the ductwork. When this occurs, your building isn’t being properly heated and cooled.

You can remove the existing HVAC unit and roof curb. The next step is installing a new curb, moving the ductwork, and attaching everything together. Your building will experience downtime during the process, negatively affecting profits and productivity.

CS Mechanical recommends using a curb adaptor. With designs to fit most rooftop footprints, you can seat a new rooftop unit without expensive downtime. The ductwork is fastened to your existing curb to ensure the new supply and return openings line up properly.

HVAC Ductwork Replacement

Ductwork circulates fresh, cold, and hot warm from the HVAC system. Over time, ductwork can become obstructed or start leaking. A good indication your building’s ductwork is clogged is when airflow noticeably decreases. Your HVAC system needs to work harder to match the temperature set on the thermostat.

Not only do clogged and leaky ducts result in energy-usage spikes, but they also place wear and tear on the HVAC system. Compared to installing a new unit, repairing or replacing worn-out ductwork is more cost-efficient.

When a new RTU unit is installed, CS Mechanical technicians will ensure the ductwork is compatible. We will also send a technician to retrofit the existing ductwork if necessary.

Demand Controlled Ventilation (DCV) Systems

Demand-controlled ventilation (DCV) systems adjust the amount of air flowing into an area to match the room’s occupancy. The primary purpose of a DCV system is to reduce energy consumption. Some commercial buildings see their energy usage rates drop by as much as 50 percent annually.

The reason for the drop in energy usage is due to the recirculated air from the occupied area. Recirculated air is still conditioned, it’s only being reused in the room. Combining a DCV system with variable frequency drives (VFD) can further reduce energy usage.

Variable Frequency Drives

Commercial RTUs are often outfitted with variable frequency drives. Like DCV systems, variable frequency drives work to reduce energy usage costs.

VFD controls increase or decrease the speed of the HVAC system’s motor based on the amount of power necessary to heat or cool a space. Reducing the HVAC system motor speed can decrease your overall utility bills, especially when it is combined with a DCV system.

The professionals at CS Mechanical have the experience necessary to install these energy-saving systems. 

Ductless Mini-Split Air Conditioners

It’s not uncommon for larger facilities to have rooms seldom in use. It may be a conference room or an overflow storage area where you keep seasonal decorations. In spaces like these, it rarely makes sense to keep the areas at a comfortable temperature. 

Instead of relying on the rooftop HVAC unit, building owners and managers can have ductless mini-split air conditioners installed in these spaces.

Ductless mini-split air conditioners often use multiple air handlers instead of a single one. As the name implies, you can also skip the expense of installing ductwork.

With a rooftop HVAC unit, every room in the building has an individual air handler. It allows you to control temperatures in places rarely in use. Not only are installation costs lower, but you also see energy savings.

CS Mechanical can install ductless mini-split air conditioners throughout the facility or only in predetermined spaces. The choice is up to you. 

Reducing Energy Usage with a High-efficiency Rooftop Unit Replacement

Energy usage costs can take a large chunk out of your operating budget. Let CS Mechanical help you reduce electrical costs. Whether your RTU requires replacing, repairs, or maintenance, we have you covered. Contact us today to learn more about our innovative HVAC services.

Ductless Mini-Split Air Conditioners

It’s not uncommon for larger facilities to have rooms seldom in use. It may be a conference room or an overflow storage area where you keep seasonal decorations. In spaces like these, it rarely makes sense to keep the areas at a comfortable temperature. 

Instead of relying on the rooftop HVAC unit, building owners and managers can have ductless mini-split air conditioners installed in these spaces.

Ductless mini-split air conditioners often use multiple air handlers instead of a single one. As the name implies, you can also skip the expense of installing ductwork.

With a rooftop HVAC unit, every room in the building has an individual air handler. It allows you to control temperatures in places rarely in use. Not only are installation costs lower, but you also see energy savings.

CS Mechanical can install ductless mini-split air conditioners throughout the facility or only in predetermined spaces. The choice is up to you.