S.J. Kowalski is your local comfort expert! Call us today to get the heating, cooling and plumbing services you need!

Experienced, Specialized, Efficient | Get a Quote

We Pride Ourselves on Your Home Comfort

  • Professional
  • Knowledgeable
  • Friendly

Founded in 1972, S. J. Kowalski Incorporated has grown and evolved into the area’s premier plumbing heating and air-conditioning company. We have been able to grow and expand our service in a variety of ways!


Maintaining quality as a way of operation is not just a slogan

Following the Golden rule in building relationships with customers

Expanding our services to meet the ever changing demands of our customers

Having our professional team factory trained in the most updated systems of today’s technology

Mitsubishi Diamond Contractor Elite

ClimateMaster GeoElite Dealers

Trane Comfort Specialists

S. J. Kowalski, Inc.starstarstarstarstar4.9 / 5

127 Total Reviews S. J. Kowalski, Inc.570-455-2600$1034 HARWOOD ROAD, HAZLE TOWNSHIP PA

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Mitsubishi ductless mini-splits

Trane furnaces, heat pumps and air conditioners

ClimateMaster geothermal.

Triangle Tube boilers.

Rinnai tankless water heaters.

Navien tankless water heaters and boilers.