In most buildings and plants we inspect, central HVAC systems consume noticeably more energy than designed — usually for one reason: the system was never balanced after installation. This is where Testing, Adjusting & Balancing (TAB) comes in.
Why do systems lose efficiency?
- Unbalanced airflows: some zones overcooled while others starve
- Pumps running far from their efficiency point due to arbitrarily throttled valves
- Controls reading false values because sensors sit in wrong locations
- Duct leakage consuming fan capacity with zero benefit
What does COME’s TAB scope include?
We start by reviewing design documents against the as-built reality, then measure actual flows at every air outlet and water circuit, adjust valves and dampers until values match design within ±10%, and close with a documented report of all readings before and after adjustment.
Expected results in numbers
- 15–25% lower energy consumption in most cases
- Noticeably better thermal comfort and fewer complaints
- Longer equipment life by operating at design points
- Documented data that simplifies future maintenance and expansion
We have delivered TAB for major factories and hospitals in Alexandria — clients typically recover the study cost from energy savings within months.
