When customers in Pennsylvania’s northern Allegheny and Butler counties see the signature teal-colored trucks with the lucky shamrock on the side, they know home comfort and energy savings help is on the way.

In fact, for more than 56 years, Kennihan Plumbing, Heating, and Air Conditioning has built a legacy of reliability, expertise, and customer-first service in Pennsylvania’s HVAC industry.

What began as a small, family-run operation that mainly focused on plumbing and electrical work evolved into a multifaceted home services company. Today, Kennihan offers HVAC service and installation as well as plumbing, electrical work, whole-house generators, solar energy solutions, and indoor air quality improvements.

Throughout its decades in business, Kennihan Plumbing and Heating stands out for its commitment to High-Performance HVAC™ contracting. The company optimizes every system it installs or services for efficiency, comfort, and safety by leveraging advanced testing and measurement techniques.

Unlike many competitors who focus simply on replacing equipment, Kennihan takes a holistic approach—measuring airflow, static pressure, combustion efficiency, and indoor air quality to deliver solutions that truly enhance a home’s comfort and performance.

Growth and Expansion Over the Years

The Kennihan Four: (from left to right) Jose Montes, Bill Kennihan,
Patty Kennihan, and Jerry Kennihan.

Since we last profiled Kennihan in 2014, the company has experienced significant growth.

“We’ve grown our team to about 20 employees now,” says Bill Kennihan, owner of the company. “And our gross sales volume has increased to about $5.4 million.”

That growth comes from the company’s expanding service offerings. While HVAC is the core of the business, plumbing accounts for roughly 28% of revenue, while electrical services — including whole-house generators — make up about 2%.

“We were doing electrical work back in 2014,” Bill explains, “but now we’ve expanded into things like backup generators, panel upgrades, and solar energy solutions.”

This diversification has not only helped Kennihan weather industry fluctuations but also allowed them to better serve customers with comprehensive home comfort solutions. He says, “We’re no longer just an HVAC company. We’re a whole-home performance company.”

Bill Kennihan’s Commitment to High-Quality Installations

One of the biggest differentiators for this company is their commitment to doing things the right way — even if it takes more time and effort.

“A lot of contractors just throw in systems without checking key factors like airflow, static pressure, or gas line capacity,” says Operational Manager Jose Montes. “We’re not interested in shortcuts. We want our systems to work properly for the long term.”

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