HVAC and Mechanical
HVAC Service Activity Log
Building A and Building B, Dallas–Fort Worth. A running record of the 2026 HVAC and mechanical work, what is completed, what is still needed, and each invoice reconciled on its own.
This report works two ways. Start in Work by Building to see, per building, what is completed and what is still needed. Switch to Invoices to see exactly what each invoice covered, including water and drywall work billed alongside HVAC. Where a single visit or invoice covered more than one building, each building shows its share, marked Partial or Combined. Recurring monthly maintenance under the management agreement is billed separately and is not shown here. This is a working tool to help track repairs, not a comprehensive assessment of building condition. Please read the full notice at the bottom of this page.
Status
Building
Tap for floor plans
Building B
Tenants at Building B, by side
East side
Tenant 13rd floor
Tenant 21st floor
Tenant 32nd floor
Tenant 42nd floor
Central
Tenant 13rd floor
Tenant 52nd floor
West side
Tenant 52nd floor
Tenant 63rd floor
Tenant 73rd floor
Rooftop Equipment Needs verification
East side
AHU-EAir handling unit, Bohn
RTU 1Rooftop unit, Carrier, roof
Central
Boiler 1Patterson
Condenser water pumps 1 and 2Paco
Cooling towerBAC, roof, with fan VFD
Air compressor and dryerQuincy
West side
SCU 1Self-contained unit, Daikin
Drawn from prior maintenance records and not yet field verified. Model, serial, and exact locations are on file and will be confirmed during the equipment inventory below.
Completed
March 21, 2026
HVAC leak investigation and repair, Suite 320, with tile replacement
Building B, Suite 320
- Investigated and repaired an HVAC related leak at Building B, Suite 320.
- Replaced the affected ceiling tile.
Invoice S-201Paid
March 21, 2026
HVAC service call, too-hot condition, with controller follow-up
Building B
- Responded to a too-hot condition at Building B and applied a temporary remedy.
- Controller specialist follow-up to address the underlying control issue.
Invoice S-202Paid
May 19 to 26, 2026
Emergency HVAC response, electrical service, and full system diagnostic
Building B, building wide
- Emergency response with multi-breaker electrical service across pump, VAV, and blower circuits.
- System restart and cooling verification across the chiller and distribution.
- Suite 330 hot-air investigation and interim remediation, including isolation of the affected zone.
- Comprehensive HVAC and controls diagnostic, delivered as a written report identifying the open items now tracked under Still Needed below.
Invoice S-203Paid
June 1, 2026
Too-warm troubleshooting and cooling tower contactor repair
Building B
- Troubleshot the persistent too-warm condition at Building B.
- Traced the cause to faulty cooling tower contactor wiring and replaced it.
Invoice S-204PartialDue July 1Part of a combined 6/1 service invoice. The Building A service call and filter are the remaining share, shown in the Building A section.
June 5, 2026
Rooftop HVAC filter replacement, main units
Building B, rooftop units
- Replacement filters supplied and installed on the two main rooftop units at Building B during recurring visits.
Invoice S-205CombinedOne invoice covering filters at both buildings.
Completed, authorized June 8, 2026
Central plant repair to baseline: motors, pump rebuilds, and strainers
Building B central plant
- Replaced two cooling tower fan motors.
- Rebuilt two pumps, including seals, bearings, and wear components.
- Cleaned two strainers and completed system start-up.
- This foundational repair returns the central cooling system to a stable baseline so the remaining items can be addressed.
Invoices 206 and 207PartialTwo equal payments, first due July 10The Building B share of a combined central plant repair. The Building A booster pump is the remaining share, shown in the Building A section.
Completed, invoiced June 24
Primary pump motor contactor, provided and replaced
Building B, primary pump
- Provided and replaced the primary pump motor contactor at Building B.
Invoice S-208Due July 24
Still Needed
Reported July 22, 2026
East-side cooling loss, diagnostic in progress
Building B, east side and 2nd floor southeast offices
- East-side cooling fell off during a stretch of extreme outdoor heat, with the west side struggling in places as well.
- A condenser water pump was found tripped and was reset on site; the building was monitored to see whether that restored the east side.
- A fan-powered box serving the 2nd floor southeast offices was flagged as not delivering air and needs to be checked.
- An after-hours HVAC diagnostic is being scheduled to determine the cause. No conclusion is stated until the mechanic completes the diagnosis on site.
Diagnostic scheduling in progress, findings to follow
From May diagnostic
Fan-powered boxes, multiple units
Building B, Suites 110, 215, and 330
- FPB_1_1 (Suite 110): two blown 10-amp fuses and high-voltage power found disconnected; the unit cannot operate or communicate until power is restored.
- FPB_2_1 and FPB_2_2 (Suite 215): intermittent power loss consistent with a failing breaker (Panel #26 noted as suspect) or shared-circuit wiring.
- FPB_2_19: thermostat found removed and left above the ceiling grid with the communication plug disconnected; communication was restored on site, permanent wall mounting still outstanding.
- FPB_3_11 (Suite 330): obsolete and bypassed, no active VAV control; the trunk line feeds the meeting room directly. Carried as informational pending an ownership decision to retire or replace.
- FPB_3_13 (Suite 330): power restored at the switch and communication returned; blower door reattachment outstanding.
- The power-related items require a licensed electrician; the thermostat mounting and blower door are minor mechanical follow-ups.
Power items addressed under the ; thermostat and blower door under .
From May diagnostic
Boiler, offline
Building B
- Internal tank leak identified at the boiler during diagnostic work.
- Boiler isolated and shut down to prevent further water damage, equipment damage, or unsafe operating conditions.
Offline
From diagnostic
Electrical restoration, disabled fan-powered boxes
Building B
- Restore high-voltage power to the Building B fan-powered boxes found without power during the diagnostic (FPB_1_1, FPB_2_1, FPB_2_2).
- Diagnose the suspected failing breaker (Panel #26) and the shared-circuit condition.
- Trace and label the unidentified feeding circuits.
- Requires a licensed electrician.
Scope defined, quote to followProposal pending
Minor mechanical follow-ups
Thermostat mounting and blower door reattachment
Building B, Suites 215 and 330 area
- Permanently wall mount the thermostat at FPB_2_19.
- Reattach and secure the blower door at FPB_3_13.
Can be bundled with a scheduled visitProposal pending
Open item
Equipment inventory, Building B
Building B
- A draft equipment inventory from prior maintenance records is shown above. This scope verifies it on site and completes the missing model, serial, and exact location details.
- Creates the verified asset baseline that future service and preventative maintenance are tracked against.
Scope to followProposal pending
Open item
Quarterly preventative maintenance, Building B
Building B
- Establish a quarterly preventative maintenance program covering the building's HVAC and mechanical equipment.
- Per-unit inspection with documented readings and findings, delivered as a recurring report once the equipment inventory is in place.
Scope to followProposal pending
Tap for floor plans
Building A
Tenants at Building A, by side
East side
Tenant 8central and east
Tenant 10 (the tenant contact)1st floor
Central
Tenant 8central and east
Tenant 11 / Tenant 9entire 2nd floor
West side
Tenant 123rd floor
Rooftop Equipment Needs verification
East side
SCU EastMain condensing unit, DaikinInspected
Booster pumpRebuilt June 2026
Central
Cooling towerEvapco, roof, with fan VFD
Condenser water pumps 1 and 2Paco
BoilerLaars
Air compressorQuincy
West side
SCU WestMain condensing unit, DaikinInspected
Drawn from prior maintenance records and not yet field verified. Model, serial, and exact locations are on file and will be confirmed during the equipment inventory below.
Completed
February 23, 2026
HVAC too-cold service call, boiler valve repair
Building A
- Responded to a too-cold condition at Building A. Found a stuck boiler valve and repaired it.
Invoice S-209Paid
March 6, 2026
HVAC repair, evaporator coil replacement, 5-ton unit
Building A, Tenant 8
- Provided and replaced the evaporator coil on a 5-ton unit at Building A, resolving the warm-air complaint on that unit.
Invoice S-210Paid
March 6, 2026
Temporary space cooler rental, two units
Building A
- Setup and delivery of two weekly-rental space coolers to maintain cooling during the repair.
Invoice S-211Paid
June 2, 2026
Emergency cooling restoration, Building A East
Building A East, Tenant 8
- Emergency cooling restoration at Building A East with a four-compressor load test.
Invoice S-212PartialDue July 4Reflects the HVAC portion of this invoice.
June 1, 2026
Service call and air handler filter replacement
Building A
- Service call and air handler filter replacement.
- Troubleshot the high-humidity condition at Building A.
Invoice S-204PartialDue July 1Part of a combined 6/1 service invoice. The Building B troubleshooting and contactor repair are the remaining share, shown in the Building B section.
June 5, 2026
Rooftop HVAC filter replacement, main units
Building A, rooftop units
- Replacement filters supplied and installed on the two main rooftop units at Building A during recurring visits.
Invoice S-205CombinedOne invoice covering filters at both buildings.
Completed, authorized June 8, 2026
Booster pump rebuild
Building A
- Rebuilt the failed booster pump serving Building A. This stopped the whole unit from tripping off.
- Part of the same central plant repair to baseline, billed as the Building A portion of the authorized scope.
Invoices 206 and 207PartialTwo equal payments, first due July 10Proposal sentThe Building A share of the combined central plant repair.
June 22, 2026
Emergency service call and PM inspection, west unit
Building A, west unit
- Emergency service call for a too-warm condition on the Building A west unit.
- Preventative maintenance inspection performed on the unit during the same visit.
Invoice S-213Paid
Completed, invoiced June 26
Refrigerant recharge and condenser tube cleaning, east unit
Building A, east HVAC unit, Tenant 8
- Three refrigeration circuits were found low during the preventative maintenance inspection, leaving the unit running warm.
- Recharged the three low refrigeration circuits back to manufacturer-recommended levels.
- Mechanically cleaned all four condenser tube bundles to clear scale, sediment, and buildup restricting condenser water flow.
- Restored the system and verified operating pressures and cooling performance.
Invoice S-214Due July 26Proposal sent
Completed, invoiced July 1
Condenser tube blockage removal, east unit
Building A, east HVAC unit, Tenant 8
- Additional work found during the condenser tube cleaning above. When the tubes were opened and brushed, the cleaning tooling would not pass through a significant portion of them, indicating an internal blockage restricting condenser water flow rather than the surface scale the cleaning was scoped to address.
- Removed the end caps from both sides of the condenser barrels to access the blocked tubes.
- Broke up and cleared the internal blockage, then re-brushed all tubes.
- Reassembled the condenser, refilled the water system, and verified operation.
- The tubes are thin-walled, so clearing a hard blockage carried a risk of tube damage. Any tube or condenser barrel repair or replacement resulting from tube damage is excluded and quoted separately.
Invoice S-215Due July 31Proposal sent
July 6, 2026
Cooling tower preventative maintenance
Building A, rooftop cooling tower
- Scheduled preventative maintenance of the Building A cooling tower, performed during business hours: cleaned the tower, verified operation, and checked overall condition.
- A crack in the water pan was found once the accumulated debris that had been masking it was cleared, and was addressed so the tower could return to service.
- This maintenance also identified a failing blower bearing and shaft, addressed under the rebuild below.
Invoice S-216Due Aug 5
Completed July 14, 2026
Cooling tower blower assembly rebuild and blower motor replacement
Building A, rooftop cooling tower
- Removed the existing cooling tower blower assembly and performed a complete rebuild of the drive assembly: blower shaft, all associated bearings, blower propeller, drive belt, and drive sheave. Reassembled with proper alignment and belt tension, then startup, operational testing, and vibration checks (proposal).
- The blower motor was found failed during the rebuild and was replaced, including emergency same-night parts procurement and additional installation labor.
- After-hours labor to complete the rebuild on an accelerated schedule, performed the evening of July 14 (change order proposal).
Invoice S-217PartialBalance openCovers the rebuild, the blower motor replacement and after-hours labor; the account statement is the authoritative record of the remaining balance.
Still Needed
From preventative maintenance
Evaporator drain pan replacement, supplemental unit
Building A, Tenant 8 supplemental HVAC unit
- A cracked evaporator drain pan was found on the supplemental HVAC unit serving the Tenant 8 suite during preventative maintenance.
- Pump the system down, remove the evaporator coil, and replace the drain pan.
- Weld the copper back, pressure test, and vacuum the system.
- Verify system operation.
Proposal sentProposal sent
From diagnostic
Electrical restoration, disabled fan-powered boxes
Building A, Suites 350 and 325, and the gym
- Restore high-voltage power to the Building A fan-powered boxes found without power during the diagnostic (FPB_3_3, FPB_3_4, and the three gym units FPB_3_19, FPB_3_20, FPB_3_21).
- Trace and label the unidentified feeding circuits.
- Requires a licensed electrician.
Scope defined, quote to followProposal pending
Open item
Equipment inventory, Building A
Building A
- A draft equipment inventory from prior maintenance records is shown above. This scope verifies it on site and completes the missing model, serial, and exact location details.
- Creates the verified asset baseline that future service and preventative maintenance are tracked against.
Scope to followProposal pending
Open item
Quarterly preventative maintenance, Building A
Building A
- Establish a quarterly preventative maintenance program covering the building's HVAC and mechanical equipment.
- Per-unit inspection with documented readings and findings, delivered as a recurring report once the equipment inventory is in place.
Scope to followProposal pending
Scope
Status
Sort
Each invoice is shown on its own with every line item, including non-HVAC work and any late fee, so you can confirm exactly what each one covered and what it did not. The account statement remains the authoritative record of balances.
Invoice S-218 Building A
Service date 6/23 | Due 7/23
Preventative maintenance inspection, Tenant 8 supplemental unit; found the cracked evaporator drain pan
Total
This inspection identified the drain pan replacement tracked separately. This invoice covered the line above.
Invoice S-208 Building B
Invoiced 6/24 | Due 7/24
Primary pump motor contactor, provided and replaced
Total
This invoice covered the line above. Anything not listed was billed on a different invoice in this list.
Invoice S-214 Building A
Invoiced 6/26 | Due 7/26
HVAC corrective repairs, eastside unit: refrigerant recharge and condenser tube cleaning
Total
This invoice covered the line above. Anything not listed was billed on a different invoice in this list.
Invoice S-215 Building A Change order
Invoiced 7/01 | Due 7/31
Change order proposal, condenser tube blockage removal, east unit
Total
Change order to the condenser tube cleaning on invoice S-214. This invoice covered the line above.
Invoice S-216 Building A
Service date 7/06 | Due 8/05
Cooling tower preventative maintenance
Total
This invoice covered the line above. Anything not listed was billed on a different invoice in this list.
Invoice S-217 Building A Partial
Invoiced 7/10 | Due 8/09
Cooling tower blower assembly rebuild, proposal
Cooling tower blower motor replacement, found failed during rebuild
After-hours labor, accelerated completion 7/14, change order proposal
Total
The account statement is the authoritative record of the remaining balance.
Invoice S-219 Building A
Service date 7/13 | Due 8/14
Relocated portable coolers and provided extension cables, Tenant 8
Total
Interim cooling support during the tower repair. This invoice covered the line above.
Invoice S-209 Building A
Service date 2/23 | Paid
Too-cold service call, boiler valve repaired
Towel shelves, gym Fixtures
Total
This invoice covered the lines above. Anything not listed was billed on a different invoice in this list.
Invoice S-211 Building A
Service date 3/06 | Paid
Temporary space cooler rental, two units
Total
This invoice covered the lines above. Anything not listed was billed on a different invoice in this list.
Invoice S-210 Building A
Service date 3/06 | Paid
Evaporator coil replacement, 5-ton unit
Total
This invoice covered the lines above. Anything not listed was billed on a different invoice in this list.
Invoice S-201 Building B
Service date 3/21 | Paid
Leak investigation and tile replacement, Suite 320
Total
This invoice covered the lines above. Anything not listed was billed on a different invoice in this list.
Invoice S-202 Building B
Service date 3/21 | Paid
Too-hot service call and temporary remedy
Controller specialist follow-up
Total
This invoice covered the lines above. Anything not listed was billed on a different invoice in this list.
Invoice S-203 Building B
Service dates 5/19 to 5/26 | Paid
Emergency response and electrical service
System restart and cooling verification
Suite 330 hot-air diagnostic
FPB_3_14 heating restoration
Comprehensive diagnostic and written report
Total
The written diagnostic on this invoice is the source of the Building B items now listed under Still Needed. This invoice covered the lines above; anything not listed was billed on a different invoice.
Invoice S-204 Both buildings Partial
Service date 6/01 | Due 7/01
Service call and air handler filter, Building A
Cooling tower contactor wiring, Building B
Total
Covers both buildings. The Building A and Building B shares appear as separate work items in the Work view. This invoice covered the lines above.
Invoice S-212 Building A Includes non-HVAC
Service date 6/02 | Due 7/04
Emergency cooling restoration, Building A East
Water intrusion response, Building A West Water
Total
One invoice covering both the HVAC restoration and the water-intrusion remediation on this visit. This invoice covered the lines above.
Invoice S-220 Building A Includes non-HVAC
Service date 6/08 | Paid
Suite 300 water extraction, HVAC service call, and ceiling tile, bundled Water
Total
No standalone HVAC repair is tracked on this invoice; it was billed for water and remediation work. This invoice covered the line above.
Invoice S-221 Building A Includes non-HVAC
Service date 6/08 | Due 7/09
Suite 110 water extraction and drying Water
Total
No HVAC repair on this invoice; water remediation only. This invoice covered the line above.
Invoice S-205 Both buildings Combined
Service date 6/05 | Due 7/09
Rooftop filters, main units, both buildings
Total
One invoice covering filters at both buildings. This invoice covered the line above.
Invoice S-206 Both buildings Part 1 of 2
Authorized 6/08 | Due 7/10
Pump repairs, Building B: motors and pump rebuilds
Booster pump rebuild, Building A
Total
Billed in two parts. Together they cover the combined central plant scope. This invoice covered the lines above.
Invoice S-207 Both buildings Part 2 of 2
Authorized 6/08 | Due 8/09
Pump repairs, Building B: motors and pump rebuilds
Booster pump rebuild, Building A
Total
Part 2 of 2 for the combined central plant scope. This invoice covered the lines above.
Invoice S-222 Building A Includes non-HVAC
Service date 6/04 | Paid
Sheetrock repair, water-damaged area, Suite 300 Drywall
Total
No HVAC repair on this invoice; drywall remediation only. This invoice covered the line above.
Invoice S-213 Building A
Service date 6/22 | Paid
Emergency service call (too warm) and PM inspection, west unit
Total
This invoice covered the lines above. Anything not listed was billed on a different invoice in this list.