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Heating or Cooling system break down at your home or office? 
Having plumbing troubles?
Does your heating system need maintenance?

If you ever need emergency service, call us 24 hours a day. 7 days a week.

315-353-4515 or 518-483-4800



To keep your systems functioning at their best, schedule a yearly service appointment. Think of it like getting the oil changed in your car. We can tune things up and potentially spot problems before they turn into a big headache for you.

A furnace that is not properly serviced will run inefficiently  – costing you more money – and can even be deadly. Carbon Monoxide is a natural product of incomplete combustion and can leak into your home or business through small cracks that develop in the combustion chamber. We test for that as part of our yearly furnace cleaning.


We service and repair:

  • Furnaces

  • Heaters

  • Heat Pumps

  • Boilers

  • Water Heaters

  • Thermostats

  • Air Cleaners

  • Duct Cleaning

  • Plumbing

  • Wood Heating Systems

Call us for an appointment or for 24/7 Emergency Service at 315.353.4515

When we woke up to a freezing cold house, I was so thankful for Cornerstone and their service tech Luke. He was thorough and had our system back up within 24 hours!

Alyssa, Madrid

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