ENERGY EFFICIENCY AUDITS
VerdaTech Energy Management and Consulting closely follows ASHRAE’s Procedures for Commercial Building Energy Audits. There are four different levels of energy audits each with increasing detail and scope of work.
The Preliminary End Use Analysis is a critical first step in the auditing process. The building’s historical energy use will be reviewed and the energy consumption and cost per square foot will be determined. From there, the results are benchmarked against similar buildings in the province. This allows our energy advisors to estimate the energy saving potential of the building.
Level 1 – Walk-Trough
During the Level 1 Walk-Through Survey the building envelope, mechanical, electrical, hot water, and control systems are visually reviewed. A report will be provided that lists potential Energy Efficiency Measures (EEMs) that may merit further consideration. The EEMs are primarily focused on low-cost and no-cost measures. Simple paybacks may be discussed for each ECM however detailed energy savings and capital cost estimates for the upgrades will not be determined.
Level 2 – Energy Survey and Analysis
The Level 2 Energy Survey and Analysis includes all that would be provided in a Level 1 Walk-Through survey but provides a more extensive analysis of the building with estimated energy savings. The Level 2 report will outline the estimated energy savings and cost analysis of numerous energy efficiency measures as well as proposed changes to operation and maintenance procedures. This level of analysis is typically sufficient for incentive, grant or loan applications for the purpose of implementing recommended EEMs.
Level 3 – Detailed Analysis of Capital Intensive Modifications
A Level 3 Analysis expands on the Level 2 Energy Survey and Analysis. It is a more detailed analysis of particular potential capital intensive energy efficiency measures that they building representative may want to investigate further. This may include more detailed field data collection, further refinement of an energy simulation model, and vendor pricing.
Commissioning & Problem Solving
The latest Building Regulations emphasize the importance of commissioning in creating a heating system that is compliant with the regulations, energy efficient and cost effective. Unless commissioning is completed correctly, the chances are the system will not be performing to its design specification.
Because forced-air heating and cooling systems are assembled on site from multiple parts, there are many ways for installers to make mistakes. Researchers have repeatedly shown that a high percentage of residential forced-air systems have major problems, including duct systems that are poorly designed, poorly located, and leaky.
The classic solution to these problems, in addition to the obvious step of better duct system design, is to insist on a more rigorous commissioning process. Commissioning refers to the process of testing and adjusting installed equipment to be sure that it performs in accordance with the manufacturer’s specs and the designer’s intent.
VerdaTech’s HRAI certified RASDT & RHDT energy consultants can help you solve and prevent a host of problems that will reduce the efficiency of an H-VAC system.