Ray Wohlfarth: The Boiler Room

Ray Wohlfarth’s expertise is in the installation, maintenance and repair of commercial boilers.


Should you re-use existing flue and chimney when replacing a boiler?

Should you re-use the existing flue and chimney?
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Saving clients energy and money doesn't stop when the install is completed

The boilers worked well the first winter.
The human thermostat.
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Learn from the mistakes of others to avoid boiler startup dangers

Boiler startup dangers.

That was my first mistake. I assumed.

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Boiler safety lessons

An average of 17 boiler incidents occurs each year.

I am not sure whether it was divine intervention or just plain luck that allowed these brave firefighters to walk away from this.

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What can you do to affect the performance of your heating systems?

More power.

One of the things I have learned about this industry is that no matter how much you think you know, things can still surprise and humble you

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The boiler gas train

Understanding this critical safety system can save your customers costly repairs.

One of the most misunderstood portions of the commercial heating system is the gas train. The gas train is a series of components that safely feed natural or propane gas into the burner.

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Controlling an existing hydronic boiler

Use a little more care when repairing or maintaining this equipment.

I like working with the control techs in our industry. They have such a passion for their craft. If left alone, they will control or monitor everything that moves, slides, shakes or switches.

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Are reps and distributors extinct?

Face-to-face customer service beats buying online in this business.

One of the companies we represent was owned by Russ Geaslen. He changed the boiler industry as we know it by designing and patenting the primary/secondary piping of modular boilers in 1964 (Patent No. US3329343A). Russ was half genius and half mad scientist. Unfortunately, he passed on to the big boiler room in the sky in 1996. I still miss him.

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Have you read the installation manual?

Documentation may save you from a lawsuit.

If you are like most designers or installers, I would wager that you have never read the installation manual for the piece of equipment that you design or install. And if you do not, you may be held responsible for any omissions recommended in that manual but not implemented.

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Are boilers dangerous?

Take precautions when repairing or maintaining commercial boilers.

John was a custodian for a local school district. We used to call him “20 Questions” because he would constantly ply us with questions about the boilers when we would perform the annual service. He would jokingly ask how many of the 20 questions he would have left.

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2015 January

The January issue of PM features cover story: 2015 Plumbing Contractor of the Year: Jim Steinle and Atomic Plumbing.

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2015 National Plumbing & HVAC Estimator

Every plumbing and HVAC estimator can use the cost estimates in this practical manual!

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Truck of the Month

Truck of the month

Are you proud of how your service truck looks? Do the graphics give people whiplash as they drive by? Have your calls increased because people remember your truck — and your company name? If so, we’d like to see it, too! Click here to find out how your service truck could be chosen as PM's Truck of the Month.