The short answer
A commercial HVAC preventative maintenance program is a scheduled service agreement in which a contractor inspects, cleans, and tunes your equipment on a fixed calendar rather than waiting for it to fail. SBS-NC, LLC has self-performed PM for commercial facilities in Greensboro, Winston-Salem, and High Point, NC — the Piedmont Triad — and across the Southeast since 1992. A typical program includes two to twelve visits per year, filter changes, coil cleaning, electrical and refrigerant checks, per-unit written reports, and 24/7 priority dispatch when something does go wrong. Programs are sized to the building — semi-annual, quarterly, or monthly — and cover rooftop units, split systems, chillers, boilers, cooling towers, VRF, and building controls. Call (336) 234-4979 for a walk-through and a program price.
Planned work is cheaper than emergency work.
A failed compressor on the hottest Friday of the year costs more than the year of maintenance that would have caught it. That is the entire argument, and it holds up.
Lower energy cost
Dirty coils and loaded filters force equipment to run longer to hit setpoint. Clean systems draw less.
Longer equipment life
Belts, bearings, and contactors get replaced on schedule instead of taking a compressor with them.
Less downtime
Problems surface during a scheduled visit, not during business hours with customers in the building.
Budget you can defend
Documented equipment history turns capital replacement requests into evidence instead of guesses.
A scheduled PM visit in progress at High Point University. Same technician, same checklist, every quarter — panels off, connections checked, findings written down. This is what a maintenance program actually looks like on the ground.
What's in a maintenance visit.
Every technician works from the same checklist, and every visit produces a written report per unit.
Filter replacement
Correct size and MERV rating for each unit — we stock them, so nothing waits on a PO.
Coil cleaning
Condenser and evaporator coils cleaned so the system isn't fighting its own airflow.
Refrigerant check
Pressures, superheat, and subcooling verified; leaks found before the charge is gone.
Electrical inspection
Connections tightened, amp draws recorded, contactors and capacitors tested under load.
Belts & bearings
Tension, wear, and alignment checked; failing parts flagged or replaced on the spot.
Condensate & drains
Pans and lines cleared to prevent overflow, ceiling damage, and microbial growth.
Controls & thermostats
Setpoints, schedules, sensors, and BAS integration verified against how the space is used.
Economizer & dampers
Linkages and actuators exercised so free cooling actually works when it should.
Heat exchanger & burners
Combustion components inspected ahead of heating season for safety and efficiency.
Written report
Per-unit findings, photos where relevant, and recommendations with quoted repairs.
Already have an equipment list? Get a number now.
Drop in the CSV you already keep — or paste rows out of a spreadsheet — and see a budgetary annual range for your RTUs, splits, VRF, and exhaust equipment in seconds. Nothing gets uploaded; it's read right in your browser.
Pick the cadence your building needs.
Semi-Annual
Cooling-season and heating-season changeover inspections. Right for offices, small retail, and light-use equipment.
Quarterly
The standard for shopping centers, schools, apartment communities, and multi-tenant buildings.
Monthly
For restaurants, manufacturing, data-adjacent spaces, and any equipment that runs hard year-round.
| Program | Semi-Annual | Quarterly | Monthly |
|---|---|---|---|
| Visits per year | 2 | 4 | 12 |
| Best for | Offices, small retail, light-use equipment | Shopping centers, schools, apartment communities, multi-tenant buildings | Restaurants, manufacturing, data-adjacent spaces, equipment that runs hard year-round |
| Filter changes | Each visit (2×) | Each visit (4×) | Monthly (12×) |
| Full inspection & written per-unit report | ✓ | ✓ | ✓ |
| Condenser and evaporator coil cleaning | — | ✓ | ✓ |
| Priority dispatch for service calls | — | ✓ | ✓ |
| 24/7 emergency response | ✓ | ✓ | ✓ |
| Asset tracking and lifecycle reporting | — | — | ✓ |
| Trip & diagnostic fee on covered equipment | Waived | Waived | Waived |
| Per-visit pricing (RTU / split) | $200 first unit, $149 each additional; $149 every unit at 4+ units per site | Same | Same |
Chillers, boilers, cooling towers, and pumps are quoted per machine after a walk-through rather than at a per-unit rate. VRF and exhaust / make-up air equipment price separately.
Program pricing depends on unit count, equipment type, and site access. Repairs found during a PM visit are quoted before work begins — and PM customers have the trip and diagnostic fee waived on covered equipment. Multi-site and contract pricing is available upon request.
Every system on the roof and in the mechanical room.
Facilities we maintain
Office buildings, manufacturing plants, warehouses, shopping centers, restaurants, schools and universities, apartment communities, medical and professional offices, and multi-tenant properties under management — across North Carolina, South Carolina, Georgia, Florida, Alabama, and Tennessee.
Rated 4.3 out of 5 on Google.
97 public reviews of SBS-NC, LLC on Google as of November 2026. The reviews below are quoted from that listing; read all of them, including the critical ones, at the link.
“Rick was our maintenance technician and was as thorough as they come in terms of information he reported back (along with pictures) and potential mitigation to correct anything he found.”
“Rick Johnson, who from the moment he walked thru our door, was personable, professional and a pleasure to deal with. (He knew his stuff!) Service like yours is hard to find these days.”
“I called and the next day someone showed up. Very knowledgeable and professional. I rate them A plus.”
Preventative maintenance FAQ.
Let's build your PM schedule.
We'll walk the roof, inventory the equipment, and price a program that fits the building.