Commercial Services

Commercial HVAC Service and Repair

Commercial HVAC Services - Heating and Cooling - Middlesex County MA - commercial1Koval Plumbing, Heating, and Cooling has been providing HVAC services to commercial offices, multi-unit housing, and local businesses since 1994. We offer a full line of plumbing, heating, and A/C services for Middlesex and surrounding Massachusetts and New Hampshire counties.  

As a fully licensed and insured HVAC company, we can provide routine maintenance packages or estimates for emergency service and system upgrades. No job is too big or too small. Our skilled technicians are able 7 days a week to troubleshoot and diagnose the bigger issues related to slow drains, sewer backups, furnace knocks and more.

Your tenants, patrons, and business depend on you to make sure the entire building is operational and efficient. Make sure you partner with an HVAC professional willing to go the extra mile for complete customer satisfaction.

We provide reliable and competitive estimates with actual time frames you can count on. We stay on the job until the job is complete. If you need seasonal maintenance and repair, want to upgrade your systems, or need an HVAC professional to have on call, try Koval Plumbing, Heating, and Cooling. We have more than 27 years in the industry and can work on any make or model in your building.

Call Koval for your commercial HVAC needs, Our services include:


Commercial HVAC Services - Heating and Cooling - Middlesex County MA - plumbing3

  • Plumbing repairs
  • Water heater repairs and replacements
  • Tankless water heater installations
  • Fixture and faucet replacements
  • System upgrades
  • Sump pumps
  • Water filters
  • New construction
  • Remodeling
  • Gas fitting


Commercial HVAC Services - Heating and Cooling - Middlesex County MA - heating1

  • New oil and gas systems
  • Forced hot water
  • Forced hot air
  • Gas and oil heating system replacements
  • Tune-ups
  • System upgrades
  • Baseboard heat installation
  • Emergency service
  • Gas fireplace service and installation
  • Gas fitting
  • Combustion air systems
  • Chimney liners
  • Indoor air quality
  • Filters
  • Humidifiers
  • Air purifiers

Air Conditioning

Commercial HVAC Services - Heating and Cooling - Middlesex County MA - commercial2

  • New systems
  • Air handlers
  • Heat pumps
  • Ductless mini splits
  • System replacements
  • Tune-ups
  • System upgrades
  • Emergency service
  • Indoor air quality
  • Filters
  • Air purifiers
  • Air to air exchangers
...Not only did they meet our schedule and budget, but they exceeded all our expectations... Tyler T., Middlesex MA Leave A Review