Professional AC Repair Service around Marlborough

Work with a top rated New England ac repair service to keep your property comfortable year round. We specialize in replacement and maintenance services for heating and cooling systems. Our technicians are trained to work on almost every type of HVAC system, and we back it up with almost thirty years of experience. For your convenience we offer 24 hour services. Our office will work to schedule an appointment that is convenient for you. Inspecting your furnace and air is a great way to keep your systems running efficiently and reduce your energy expenses.
  • New Oil and Gas Systems
  • Central Air Conditioning
  • Gas Fireplace Services
  • Tune Ups
  • Installation Services
  • Filters, Humidifiers and Air Purifiers

  • Make sure you review our specials online to get the best deal on your new furnace or air conditioning installation. Finding the right specialist to analyze your energy needs can help verify that your home or business is equipped with the proper equipment to ensure maximum energy efficiency. One of the key reasons to choose Koval is provide HVAC and plumbing services. As a leading New England contractor, you can count on Koval for services in New Hampshire and Massachusetts.

    Keep Your Home Or Business Comfortable Year Round in Marlborough Call Koval Today


    No job is too big or too small. Our skilled technicians are able seven days a week to troubleshoot and diagnose the bigger issues related to slow drains, sewer backups, furnace knocks and more. Having a well tuned HVAC is more likely with proper maintenance. Our technicians are highly skilled and have leading industry experience. Count on Koval today for prompt service and flexible appointments.
    Mr. Koval is a professional. He is prompt and reliable. Twice, Mr Koval responded to emergency situations, and he dealt with the problems effectively. Today the water to my home had to be shut off due to plumbing problems in my laundry. After that was taken care of he took the time to fix my laundry doors! All this was done at a reasonable rate. I would recommend Mr. Koval without hesitation.
    ...Not only did they meet our schedule and budget, but they exceeded all our expectations... Tyler T., Middlesex MA Leave A Review