Salem, NH

I completed a routine maintenance check on a restaurant’s HVAC system. I inspected the Trane rooftop unit, cleaned the evaporator coils, and replaced the air filters. I also checked the refrigerant levels and ensured the thermostat calibration was correct. The system was running efficiently, and I scheduled the next maintenance for optimal performance throughout the year.

I repaired a malfunctioning commercial HVAC unit for a large office building. The Carrier system had a faulty blower motor that caused poor airflow. After diagnosing the issue, I replaced the blower motor and tested the system. I also checked the VAV (Variable Air Volume) boxes to ensure proper airflow distribution. The repair restored the system's functionality, ensuring consistent temperature control throughout the building.

I repaired a walk-in cooler for a grocery store. The evaporator fan motor was malfunctioning, causing temperature fluctuations. I replaced the fan motor with a new one from Copeland and tested the system. The refrigeration unit resumed maintaining a steady temperature for food storage.

I responded to a commercial heating issue in a warehouse. The Lennox furnace was experiencing ignition failure, leaving the building without heat. Upon inspection, I found a cracked heat exchanger and faulty igniter. I replaced the heat exchanger with a new one from Lennox and installed a new igniter. I also cleaned the burner assembly and tested the unit for carbon monoxide leakage. After completing repairs, I conducted a full system test to verify proper operation. The heating system was restored to optimal performance, providing efficient and safe heat throughout the warehouse space.

I installed a new commercial HVAC system for a retail store. The system included a York 10-ton rooftop unit with a variable-speed compressor. I mounted the unit on the roof, connected the ductwork, and wired the control systems. I also installed a programmable Honeywell thermostat to improve energy efficiency. After installation, I charged the system with R-410A refrigerant and calibrated the thermostat. I ran multiple tests to ensure even cooling throughout the store, and verified the zoning system was functioning properly. The new system is now providing reliable heating and cooling for the business.

I performed scheduled maintenance on a Daikin split system at a restaurant. I replaced the air filters, cleaned the condenser coils, and checked refrigerant levels. The system was also inspected for leaks. After cleaning the drain lines, the unit was running efficiently with proper airflow.

I replaced a faulty compressor on a commercial air conditioning unit. The unit had been running inefficiently, causing inconsistent cooling throughout the building. I installed a new Copeland Scroll compressor and replaced the refrigerant with R-410A. After testing for leaks and ensuring proper airflow, the system was restored to full operation, providing consistent cooling once again.

I completed the replacement of an outdated rooftop AC unit with a new Carrier 10-ton unit. The old unit was experiencing frequent breakdowns and inefficiency. I removed the old unit, set up the new system, and connected it to the building’s existing ductwork. I also installed a Honeywell programmable thermostat to enhance system control. After testing, the new AC provided improved airflow and cooling.

I responded to a commercial HVAC system with insufficient cooling due to a malfunctioning evaporator coil. I shut down the system, cleaned the clogged coil, and refilled the system with the appropriate level of R-22 refrigerant. The repair restored proper cooling performance, ensuring the system could handle peak temperatures efficiently.

I installed a Trane 20-ton rooftop HVAC unit for a commercial client needing a reliable heating system. I connected the unit to the building’s gas line and installed a Lennox air filter system for improved air quality. After calibrating the system and testing heat distribution, the new unit performed efficiently, providing even heating throughout the facility.

I repaired a walk-in cooler experiencing temperature fluctuations. The issue was traced to a faulty thermostat and a worn condenser fan motor. I replaced both components, using a Danfoss thermostat and a new Emerson fan motor. After testing and adjusting the temperature settings, the cooler maintained a stable temperature, preventing further loss of perishable goods.

I installed a new Goodman 5-ton rooftop AC unit for a commercial office. I positioned the unit, connected the electrical lines, and sealed the ductwork. I installed a Johnson Controls thermostat to enhance temperature control. After testing airflow and checking for leaks, the new unit provided optimal cooling for the office space, improving employee comfort.

Repaired Daikin VRV IV heat recovery system. Diagnosed communication error between outdoor unit and branch selector boxes. Replaced faulty F1/F2 transmission wiring. Updated outdoor unit PCB firmware. Checked refrigerant charge in all circuits, adjusted subcooling. System now maintaining proper temperature in all zones.

Serviced Lennox LCH240H4B heat pump. Cleaned condenser coil with Nu-Calgon Tri-Pow'r HD, straightened bent fins. Replaced failed dual-run capacitor and contactor. Checked refrigerant charge, added 1.5 lbs R-410A. Calibrated Honeywell T6 Pro thermostat. Heat pump now heating and cooling efficiently.

Overhauled Baltimore Aircoil Company BAC 3000 cooling tower. Replaced deteriorated fill media with new BAC CrossFlute fill. Cleaned distribution nozzles, adjusted water flow. Repaired cracked fiberglass basin, applied Belzona 5811 epoxy coating. Replaced fan motor and drive shaft. Balanced fan assembly using Fluke 810 vibration tester. Cooling tower efficiency increased by 15%.

Repaired Hoshizaki KM-1340MAH ice machine. Diagnosed scale buildup on evaporator. Disassembled unit, cleaned scale using Nu-Calgon Nickel-Safe Ice Machine Cleaner. Replaced water pump, inlet water valve, and bin control thermostat. Sanitized food zone with Nu-Calgon IMS-III. Adjusted water level, freeze cycle time.

Serviced York YZ centrifugal chiller. Performed oil analysis, replaced oil filter. Inspected magnetic bearings, adjusted clearances. Cleaned condenser tubes using Goodway RAM-PRO-XL tube cleaner. Checked refrigerant charge, topped off with R-1233zd. Tested all safeties, updated control firmware. Chiller efficiency improved by 8%.

Repaired Trane Intellipak SXHFC commercial chiller. Diagnosed faulty electronic expansion valve (EEV). Removed old Sporlan SEI-30 valve, installed new SEI-30 with updated software. Recalibrated valve using Trane Tracer software. Checked refrigerant charge, adjusted superheat. Chiller now maintaining proper leaving water temperature.

Replaced faulty compressor in Carrier 48HC rooftop unit. Recovered R-410A refrigerant, removed old compressor, installed new Copeland ZP51K5E-PFV scroll compressor. Brazed connections using oxy-acetylene torch, pressure tested with nitrogen, vacuumed system, and recharged. Checked amperage draw and superheat/subcooling. Unit now cooling properly.

Performed routine maintenance on a Carrier WeatherMaker 7.5 Ton 208/230V 3 Phase Rooftop Unit in Boston, MA. Inspected components, cleaned the condenser coils, and tested the refrigerant charge. All systems are functioning well, and the customer is satisfied with the service.

Performed comprehensive maintenance on a Carrier 48HC rooftop unit at a local office building. Cleaned condenser coils using Nu-Calgon Evap Pow'r-C. Replaced clogged air filters with MERV 13 pleated filters. Inspected and tightened electrical connections with Klein Tools torque screwdriver. Lubricated fan motors using Supco synthetic lubricant. Checked refrigerant charge with Fieldpiece SMAN460 digital manifold. Calibrated Honeywell T6 Pro thermostat for optimal performance.

Repaired a Kolpak walk-in refrigerator today. Diagnosed faulty Copeland Scroll compressor using Fluke 87V multimeter. Replaced compressor and Sporlan filter drier. Evacuated system with JB Industries DV-142N vacuum pump. Recharged with R-404A refrigerant using Yellow Jacket 42006 manifold gauge set. Installed new Dixell XR75CX digital controller. Tested system operation, verifying proper temperature maintenance and defrost cycles.

Completed a commercial energy audit. Used a Fluke 1730 Energy Logger to monitor energy consumption and identify inefficiencies. Inspected HVAC systems, lighting, and insulation. Utilized a Testo 875-2i thermal imager to detect heat loss and pinpoint insulation issues. Provided a detailed report with recommendations for energy-saving improvements to enhance overall efficiency and reduce operational costs.

Repaired Trane XR16 air conditioner in Attleboro, MA commercial space. Replaced faulty compressor and recharged system with R-410A refrigerant. Installed new Honeywell thermostat for improved control. Conducted thorough testing to verify optimal system operation and climate control performance.

Performed commercial zoned AC repair. Diagnosed an issue with the Trane Varitrac zoning system. Replaced a faulty zone controller and recalibrated the dampers. Used a Fluke 179 Multimeter to test electrical connections and a Bacharach H10 Pro leak detector to check for refrigerant leaks. Ensured each zone was cooling effectively and the system was running efficiently.