by Choice Mechanical Team | Sep 4, 2026 | Boiler Articles, Maintenance Articles
A leaking boiler tube is the end of a failure process, not the beginning. Plugging or replacing the damaged tube may return a boiler to service, but it does not explain whether scale, oxygen corrosion, poor combustion, low water, erosion, or thermal stress will damage...
by Choice Mechanical Team | Sep 3, 2026 | HVAC Articles
Yes, many older commercial buildings can be retrofitted with heat pumps. The harder question is whether a particular building can be converted without creating new electrical, comfort, ventilation, or peak-heating problems. A commercial heat pump retrofit is not a...
by Choice Mechanical Team | Sep 1, 2026 | HVAC Articles
A server room can be cool at the wall thermostat while equipment at the top of a rack is already receiving overheated air. The room-average temperature may look acceptable, but recirculation, blocked airflow, a failed fan, or loss of cooling capacity can create...
by Choice Mechanical Team | Aug 25, 2026 | HVAC Articles
A make-up air unit can be running and still fail its job. The fan may turn while the building remains negative. The burner may fire while discharge air stays too cold. The BAS may show the outdoor-air damper open even though a broken linkage leaves the blades nearly...
by Choice Mechanical Team | Aug 20, 2026 | HVAC Articles
The capacity printed on the existing rooftop unit is not the building’s load. It is the size of equipment someone selected—perhaps twenty years ago, before new windows, LED lighting, added ventilation, changed tenants, or a warehouse conversion altered how the...