Firm's New Office Came With Old Technology
Ecotope, an energy efficiency engineering and research firm in downtown Seattle, outgrew their office space and decided to lease the third floor of a 3.5-story mixed-use building. The building’s existing heating and cooling equipment featured an all-electric, variable air volume (VAV) rooftop unit (RTU) with electric resistance terminal heat in the individual zones including open office areas, conference rooms, a shared breakroom and a server room.
At more than 100 years old, the building’s uninsulated brick exterior and inefficient aluminum-framed double-pane windows combined with an inefficient existing HVAC system led to significant energy waste. “The existing system wasn’t going to cut it for us from an efficiency perspective,” said Jonathan Heller, president of Ecotope. “What people don’t always realize is that just because a system isn’t broken yet doesn’t mean there isn’t value in replacing it from a monthly energy savings or even building value perspective.”
HVAC Upgrades Downsize Energy Waste
Prior to moving in, Ecotope worked with the property management company to replace the existing HVAC system with state-of-the-art HVAC technologies that would reduce their energy footprint. They landed on a very high efficiency dedicated outside air system (also referred to as VHE DOAS).
DOAS applies the concept of separating heating and cooling from the ventilation system, which allows for optimal control of each of these critical building functions. The system installed for the office improves this concept by focusing on efficiency by pairing a high efficiency heating and cooling system with a very high efficiency heat recovery ventilator (HRV). This combination results in:
- Reduced energy use
- Quieter running equipment
- Improved individual temperature control
- Smaller equipment and reduced ductwork
- Better indoor air quality due to filtered 100% outside air being brought into the space
Since upgrading to the new and efficient HVAC system, energy use has declined by 42% for the firm’s third-floor office space. The project is also expected to significantly reduce peak demand up to 38% in summer and 56% in winter.