Gagnon Bob Plumbing & Heating | Qualified HVAC Repair in Lowell, MA

Our plumbing inspection is a thorough assessment of your Lowell home's entire system. Owner Bob Gagnon will check for leaks, test water pressure, inspect pipes for corrosion, and evaluate fixtures and drains. He'll provide a clear, honest report on the health of your plumbing, identifying minor issues before they become major problems, and can discuss options for updates like grey water systems. It's a proactive service designed to give you peace of mind about one of your home's most critical systems.

Short cycling—where your furnace or boiler turns on and off too frequently—is common in our area due to older systems, clogged filters, or improper sizing. It wastes energy and causes wear. We diagnose the root cause, which could be a faulty thermostat, a dirty flame sensor, or an issue with the blower motor. As specialists in heating systems and boiler replacements, we provide lasting fixes, whether it's a precise repair, a cleaning service, or recommending a correctly sized, high-efficiency replacement to improve comfort and lower your bills.

Every water heater installation is performed by owner Bob Gagnon, who brings over 20 years of local experience. We help you choose the right unit—traditional tank or tankless—for your household's needs and Lowell's water conditions. We use quality, U.S.-manufactured components when possible and ensure proper sizing, venting, and code compliance. Most importantly, our large installations come with a five-year guarantee on labor, reflecting our confidence in workmanship done right the first time, by someone who stands behind it.