The experts at O'Brien Plumbing, Heating, and Air Conditioning are at your service for whatever you need, whenever you need it. Whether it's to repair a dripping faucet or to install or replace and entire plumbing, heating, or air conditioning system, O'Brien handles the whole job from start to finish – with respect and care for our customers and their homes. Our highly-trained technicians will professionally handle every plumbing situation, from repairs, to replacements, to new installations. We serve the plumbing, heating, and air conditioning needs of most of the greater North Jersey area, including Warren, Sussex, Morris, and Hunterdon counties with the following: 24-hour Emergency Service Expert Plumbing Service and Repair Heating and Air Conditioning Service Installation, Repair, Maintenance Drain Cleaning Water Treatment (Softeners, UVs, Filters) Bathroom and Kitchen Remodels Water Softener Solar Salt Deliveries Utility Main Lines (Gas, Sewer, Water) O'Brien is here for our customers. If you've got a plumbing emergency, no matter what the reason (or season), our 24-hour emergency repair professionals will come to your home or business to take care of whatever needs to be done. We back up our work with a 100% customer satisfaction guarantee, too!