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Business Details
50+ Years
experience
Emergency
services
Open 24/7
always available
Trusted HVAC Services Since 1972
Founded in 1972, S J Kowalski has established itself as a trusted leader in HVAC and plumbing services for residential and light commercial clients. Our family-owned business combines decades of hands-on experience with factory-trained expertise in cutting-edge systems from industry leaders like Trane and Mitsubishi. We prioritize 24/7 emergency service, preventative maintenance through our Comfort Club, and energy-efficient solutions tailored to northeastern Pennsylvania's climate.

Our team's certifications, including Trane Comfort Specialist and Mitsubishi Diamond Contractor, reflect our commitment to technical excellence. With an A+ BBB rating and over 50 years of community service, we emphasize transparency, reliability, and personalized support for every client.
Services
HVAC Services Furnace Repair Boiler Services Heat Pump Installation Plumbing Maintenance
Details
  • Year established: 1972
Highlights and features
  • 24/7 emergency HVAC and plumbing services
  • Family-owned since 1972 with local expertise
  • Comfort Club preventative maintenance plans
  • Factory-trained technicians for major brands
  • Free estimates on system replacements
Associations and certifications
  • Trane Comfort Specialist
  • Mitsubishi Diamond Contractor
  • Better Business Bureau (BBB) A+ Rating
What people say
Prompt service Professional technicians Reliable repairs Great customer service Energy-efficient solutions
Services
Furnace Repair
Our certified technicians provide 24/7 furnace repair services for all makes and models. We diagnose issues like ignition failures, thermostat malfunctions, and carbon monoxide leaks using advanced tools. Residential and commercial clients benefit from same-day emergency service and 10-year manufacturer warranties on replacement parts.
Boiler Services
Specializing in Navien boiler systems, we offer installation, repair, and maintenance for residential and commercial radiant heating. Our technicians address leaks, pressure issues, and efficiency problems while ensuring compliance with safety standards. Preventative maintenance plans extend system lifespan and improve energy efficiency.
Heat Pump Installation
We install high-efficiency Trane heat pumps for year-round temperature control. Our process includes load calculations, ductwork assessment, and SEER rating optimization. Homeowners save up to 60% on energy costs while enjoying dual heating/cooling functionality with programmable smart thermostats integration.
Plumbing Maintenance
Our licensed plumbers handle tankless water heaters, well systems, and water conditioning installations. Preventative maintenance includes pipe inspections, pressure testing, and water quality analysis. Emergency services address burst pipes, sump pump failures, and sewer line issues with 24/7 availability.
HVAC Maintenance
The Comfort Club membership includes biannual inspections of heating and cooling systems. Technicians clean coils, check refrigerant levels, and lubricate components to maintain 95%+ system efficiency. Clients receive priority scheduling and discounts on repairs while extending equipment lifespan by up to 25%.
Questions
Do you offer 24/7 emergency HVAC service?
Yes, we provide 24-hour emergency repair services for heating, cooling, and plumbing systems in Hazle Township and surrounding areas.
What HVAC brands do you work with?
We service all major brands including Trane, Mitsubishi, Rinnai, Honeywell, and Williamson for both residential and commercial systems.
How often should HVAC systems be serviced?
Manufacturers recommend twice-yearly maintenance - once before heating season and once before cooling season for optimal performance.
Do you offer financing options?
Yes, we partner with Wells Fargo Service Finance to provide flexible financing plans for HVAC replacements and major repairs.
What areas do you service?
We serve Hazle Township, Hazleton, Mahanoy City, Tamaqua, Berwick, Bloomsburg, Mountain Top, Sugarloaf, and Drums.
Are your technicians certified?
Our team includes factory-trained Mitsubishi Diamond Contractors and Trane-certified specialists with ongoing technical education.