Condensing Gas Rooftop Units (C-RTUs)
Condensing Gas Rooftop Units (C-RTUs) provide a unique opportunity for gas efficiency, especially in the colder climates of the Pacific Northwest. These units, with typically 10-15% higher heating efficiency than non-condensing gas RTUs, offer an innovative option for heating and conditioning a commercial space.
- Better air quality (IAQ)
- Increased occupant comfort
- Reduced gas usage
- Lower HVAC energy costs
C-RTU Training Slides & Webinars
These various slide sets were used for trainings that explored the gas-fired condensing rooftop unit (C-RTU) technology and its performance on commercial facilities. The trainings highlight the energy efficiency benefits associated with C-RTUs, while debunking current myths.
What’s the difference between installing condensing (C-RTUs) and conventional gas RTUs? Mostly it’s about careful attention to condensate management. The condensing furnace in C-RTUs requires considerations for piping, pumps, neutralizers, and freeze prevention – otherwise there’s the risk that the unit will not function as efficiently as specified, and there’s a threat that the original equipment manufacturer (OEM) may not honor their warranty.
Condensing Gas Rooftop Units (C-RTUs) are an excellent technology for commercial buildings to increase their HVAC gas efficiency levels. As with all technologies, some buildings are better candidates for C-RTU installation than others. Here are a few considerations to determine if your building could be a good candidate for C-RTUs.
100% OA C-RTU Case Study: Provides details on the successful installation and operation of a C-RTU conditioning 100% outside air (OA) on a facility in the Pacific Northwest.
30% OA C-RTU Case Study: Provides details on the successful installation and operation of a C-RTU conditioning 30% outside air (OA) on a facility in the Pacific Northwest.
Installer C-RTU Value Proposition: Report that specifically calls out the benefits and value of selling customers on C-RTUs for installers.
Distributor C-RTU Value Proposition: Report that specifically calls out the benefits and value of stocking and supplying C-RTUs for distributors.
Manufacturer C-RTU Value Proposition: Report that specifically calls out the benefits and value of adding C-RTUs to the R&D pipeline for manufacturers who do not currently offer C-RTUs.
Commercial Building Business Case for C-RTUs: Business case for commercial facilities that includes the quantitative financial metrics for C-RTUs, considering many variables of the technology (e.g. %OA, runtime hours, geographic location, applications), and highlights the technology’s benefits to the building.
The NEEA C-RTU team has developed resources for market actors across the supply chain to learn, leverage, and share across the Pacific Northwest.
Special thanks to local members of the C-RTU Huddle for their input and support: Rudy Caffall (Aaon/Johnson Barrow), Richard Lord (Carrier), Allison Kim (Cushman & Wakefield), Jeremy Prys (Engineered Air), Ryan Kerr (Gas Technology Institute), Jim Clancy (ICE Western), Mike Berry (McClintock and Bustad, Inc.), and John McKissack (Nortek)