The three-number combination for premium storage.

Single-source HVAC and plumbing preventative maintenance for climate-controlled storage facilities across Northern Ohio and southeast Michigan.

Climate-controlled storage charges a premium for one reason: the building actually holds the climate. Two systems make that promise possible — the HVAC that maintains temperature and humidity, and the plumbing that keeps water exactly where it belongs. Campbell Mechanical Services covers both on one preventative contract, with one accountable Northern Ohio team. Since 1968. 

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Premium rents run on three numbers. Most operators have one or two.

Climate-controlled units rent at a 25–50% premium over standard storage. That premium rests on three things being true at the same time. Most independent operators in Northern Ohio have one or two. Almost nobody has all three on the same contract. 

01  ·  Airtight HVAC

Rooftops, splits, and chiller systems that maintain temperature and humidity through Ohio’s shoulder seasons — the conditions you charge a premium for. Preventative maintenance from Campbell reduces the largest operating line on your P&L.

02  ·  Watertight Plumbing

Sprinkler systems, condensate drains, backflow preventers, restroom systems, water heaters. The catastrophic-risk side of your building. The system that, when it fails, takes an entire floor of units offline in minutes.

03  ·  Accountable Contract

One preventative agreement covering both systems. One dispatcher. One accountable Northern Ohio team. One annual conversation about what the building actually costs to run — instead of two emergency invoices and two stories. 

Two vendors. Two invoices. Zero accountability.

Most climate-controlled storage operators run their HVAC through one contractor and their plumbing through another. When something fails, it’s two phone calls, two emergency invoices, and two stories about whose fault it was. The energy line on the P&L creeps quarter over quarter and nobody can explain why. The sprinkler system hasn’t been tested in years. The condensate drain on the upstairs unit clogged and dripped onto tenant property nobody discovered until move-out. None of it shows up in the monthly numbers — until it all does, at once, at the wrong time. 

The hidden cost of the two-vendor model 

• HVAC pay-per-call pricing rewards emergencies, not prevention.
• Plumbing systems with no preventative cadence — sprinkler, backflow, condensate — carry catastrophic-loss exposure.
• No documentation when a tenant claims you failed to deliver ‘climate-controlled’ conditions.
• Vendor finger-pointing when something fails at the intersection of HVAC and plumbing (e.g., condensate drain overflows).
• No single view of what the building actually costs to operate, year over year.