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Proudly Serving the North Shore for over 30 years. Cranney Home Services can solve any Plumbing, Heating, Cooling and Drain Cleaning issue.


Experience the Cranney Difference

We are a full-service commercial and industrial installer of HVAC/R, Electrical, and Plumbing solutions. For us, full-service means just that. You name it we can engineer, design, and install it in just about any facility. Our fully trained and consistently certified team of professionals is committed to working with industry-leading technology and equipment to keep your business successful.

Commercial and Residential





Emergency Service Available. Fill Out a Form or Call Today 1.800.CRANNEY

Seasonal Special:

Furnace Safety Inspection – Only $39.50

Seasonal Special:

Furnace Safety Inspection – Only $39.50


Industrial furnaces are much different than the one you have at home. These giant models are used to heat large buildings, provide heat for a process, or serve as a reactor to provide heats of reaction. Because of their size, they are capable of reaching temperature much higher than that of a standard sized model. Due to the sheer size and heat volume that these machines produce, it’s important that they stay working efficiently and safely. Like the furnace you may have in your home, a commercial model needs routine maintenance and professional servicing.

Maintenance and Servicing

At Cranney Companies, we want your commercial furnaces to be in the best working condition it possibly can be. Our trained professionals know all of the parts of these heating systems and will be able to locate any areas of concern. After we arrive at your commercial property to inspect or service your furnace, you can expect the following:

  • Mechanical check: One of our professionals inspects the mechanical properties to make sure that all connections are secure and working properly.
  • Refractory check: This area is where the fuel burns – the combustion chamber. Because the area is subjected to high temperatures regularly, it’s important to look for areas of wear and tear or cracks.
  • Electrical check: Electrical components are an important part of your commercial furnace, and are checked for accuracy. 
  • Calibration: This deals with the specific temperature requirements. The thermostat sensor needs to accurately set and display the desired heat.
  • Burner tuning: The burner is one of the most important components of a furnace, no matter if it’s residential or commercial. A professional assesses the flame and make sure that it’s working properly.
  • Cleaning: Like all mechanical systems, your commercial furnace also needs to be cleaned. Buildup can occur over time and can affect function or cause corrosion.
  • Filter Changes: The filter controls air particles, grease, or debris that may otherwise harm your machine and leak into your air supply.
  • Lubrications: In order for parts to continue moving and working as they should, they need to be lubricated. Over time, these parts may accumulate oil or grease that can harden, leading to malfunction.

Signs You Need Commercial Furnace Maintenance

  • Startup problems. Commercial furnaces that won’t turn on may have a connection issue. It could also be a thermostat or pilot light problem, so it’s best to call a professional immediately.
  • Frequent power switches. If your furnace turns on and off unexpectedly, it may not be receiving adequate power.
  • Lack of warm air. Air filters or vent damage is a likely culprit. To avoid leaking heat, you need professional repair. You could also have a blockage, which can cause more severe problems down the road.

Here at Cranney Companies, our trained and certified technicians go above and beyond to keep your commercial furnace safe and efficient. Routine inspection and servicing will extend the life of your furnace and prolong your need for costly replacement.  If you are having trouble with your commercial furnace, call Cranney Companies today!

$57 OFF


Does not apply to dispatch and/or diagnostic fee.

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