What a Real Preventive Maintenance Program Costs (and Saves)

When we acquired our fortieth PM client in 2022, we pulled three years of service data across the entire portfolio. The pattern was clearer than we expected, and it changed how we price.

The data set

Forty commercial properties in Middle Tennessee. Total square footage: 1.1 million. Mix of Class B office, medical, light industrial, and retail. Equipment inventory: 184 rooftop units, 22 air-cooled chillers, 612 light fixtures we touched at least once, and 96 electrical panels we serviced or upgraded.

The headline number

Across the portfolio, every dollar spent on documented quarterly preventive maintenance saved $3.41 in deferred capital and emergency-repair costs over a three-year horizon.

That ratio sounds aggressive. It isn't, once you see the breakdown.

Where the savings actually come from

The biggest line item, by far, was extended equipment life. Three RTUs we had been quietly nursing for five years finally needed replacement in 2024 — versus the eight units we'd projected based on industry-standard depreciation.

The second-biggest line item was emergency-call avoidance. After-hours rates are 1.4x our standard rate, and the average emergency call runs $640 in labor alone. Across the portfolio, we logged 71 fewer emergency calls in year three than in year one.

Third was insurance. Two clients negotiated lower premiums by submitting our PM documentation alongside their renewal. We didn't write the savings, but the carriers cited "documented maintenance program" in their notes.

Where PM doesn't pay back

Buildings under 10,000 square feet with a single rooftop unit usually don't justify quarterly cadence. We sell those clients bi-annual PM with a discounted emergency-response add-on instead.

Buildings with brand-new equipment under manufacturer warranty don't always justify it either — for the first three years. We've talked clients into postponing.

What a real PM proposal should include

• Equipment inventory, line by line, with model and serial numbers
• Cadence per equipment class (rooftop units, chillers, exhaust fans, etc.)
• Per-visit deliverable: report format, photo policy, instrument readings
• Response-time guarantee for unplanned work
• An exit clause that doesn't require a year's notice

If your current PM provider can't put those five things in writing, you don't have a maintenance program. You have a recurring invoice.