// FIELD NOTES

Phase Sight blog.

Working notes on HVAC, predictive diagnostics, and what we're learning from the field.

multifamily June 23, 2026

Why HVAC callbacks spike in multifamily and how to reduce repeat visits

Callbacks cost contractors money and erode property manager trust. Here is what drives repeat visits in multifamily buildings and how to address the root causes.

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hvac labor shortage May 30, 2026

HVAC labor shortage: how smaller contractors are adjusting dispatch and service routes

With fewer techs available, small HVAC contractors are rethinking how they route calls, triage equipment, and decide which jobs demand same-day attention.

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multifamily May 29, 2026

The real cost of deferred HVAC maintenance in multifamily buildings

Skipping HVAC maintenance in multifamily buildings rarely saves money. Here is what deferred service actually costs, from equipment to residents.

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