Expert Plumbing & HVAC Services in New Jersey
Headquartered in Hackettstown and proudly serving New Jersey since 1980, Gallagher’s Plumbing, Heating & AC is a leading provider of residential plumbing, light commercial plumbing projects and HVAC services.
As licensed plumbing contractors in NJ, we handle everything from new construction plumbing installations to complex plumbing system repairs with expert precision and care.
Our team also delivers complete HVAC services / heating and cooling solutions, including air conditioning installation and repair, furnace installation, and seasonal HVAC maintenance to keep your indoor climate efficient and reliable year-round.
We’re also trusted for safe, code-compliant gas piping services for both homes and businesses.
With over 40 years of industry experience, Gallagher’s is the name New Jersey property owners trust for dependable plumbing, heating, and air conditioning services that stand the test of time.
Gallaghers Plumbing, Heating and AC Services Include
AC, Heating and Plumbing Services in Hackettstown Area
Plumbing Services
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Complete plumbing for new homes, track homes, and condominiums
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Water heater services, including replacement and installation of indirect hot water tanks
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Bathroom plumbing, including additions, ADA improvements, and basement bathroom rough-ins
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Sump pump and well tank installation and maintenance
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Fixture replacements and garbage disposal installation
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Expansion tanks and pressure system components
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Light commercial plumbing services
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General plumbing service and repairs
Heating Services
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Both standard and high efficiency systems available
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Boilers (replacement oil or gas and complete new hot water baseboard systems)
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Furnaces-replacement oil or gas fired systems
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Oil to Gas conversion
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Mini-split heat and a/c systems
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Radiant floor type heating
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Annual cleaning and maintenance on all mechanical systems
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HVAC Service and repairs
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Air-conditioning- replacement or add to existing system
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AC repair
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AC installation & replacement
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AC maintenance
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Mini-split installation
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HVAC Repairs
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Oil to gas conversions
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Underground gas lines
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BBQ lines
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Back-up generator piping
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Gas lines to outdoor fire pits
Get a Quote!
Ready to start your next project? Let’s discuss how we can bring your ideas to life. Request a consultation and let us show how we can help you with plumbing, heating and cooling projects in New Jersey.
Why Choose Gallaghers Plumbing, Heating and AC?
Gallagher’s Plumbing, Heating & AC is your one-stop solution for expert residential and commercial services across New Jersey. From new construction plumbing to reliable HVAC repairs, we deliver precision, durability, and top-tier customer care.
Over 40 Years of Trusted Service
Since 1980, homeowners and businesses across New Jersey have relied on Gallagher’s for honest, high-quality plumbing, heating, and cooling solutions.
Licensed Plumbers & HVAC Experts, Proven Results
Our skilled technicians and licensed plumbing contractors deliver dependable workmanship for every installation, repair, or HVAC service.
Personalized Solutions, Local Commitment
Based in Hackettstown, we bring decades of experience and a hometown commitment to every job — deliveringplumbing and HVAC solutions with reliable, responsive service across New Jersey.
Our Trusted Partners
We’re proud to partner with industry-leading manufacturers and suppliers who provide us with top-quality plumbing and HVAC equipment. These trusted partnerships ensure we deliver reliable, long-lasting solutions using the most advanced and efficient HVAC and Plumbing equipment available. By working with proven brands, we’re able to uphold our commitment to craftsmanship, performance, and customer satisfaction on every project.