HEATING SERVICES FOR EVERY HOME

Expert heating installation, repair, and maintenance for homes across Merrimack Valley and North Shore areas in Massachusetts.

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Boilers & Furnaces

A completed install in a room with copper piping, green and white expansion tanks, a blue boiler, and various valves and gauges.

Whether your home relies on a boiler or a furnace, Szadis Heating Service provides expert care to keep your system running safely and efficiently. Our technicians are trained to service, repair, and install all major makes and models. We start by assessing your current setup to identify the best solution for your home’s heating needs, focusing on energy efficiency and long-term reliability. From routine tune-ups that improve performance to full replacements that upgrade comfort and reduce energy costs, we make sure your heating system delivers consistent, dependable warmth all season long.

Water Heaters

A utility room with a water heater, copper pipes, and a blue Buderus boiler with gauges and valves. Hanging on the wall are wooden hangers and keys, with a fluorescent light overhead.

A dependable water heater is essential for everyday comfort. Szadis Heating Service offers comprehensive water heater installation, repair, and maintenance services for both traditional tank and tankless models. We evaluate your home’s hot water demands and recommend the right system for your lifestyle and budget. Whether you’re replacing an aging unit or improving efficiency with a modern upgrade, our team ensures your water heater operates smoothly, delivers steady hot water, and maximizes energy savings.

Oil Tanks

A black oil tank installed in a basement.

Oil-fired heating systems require properly installed and well-maintained storage tanks to operate safely and efficiently. Szadis Heating Service provides full oil tank installation, inspection, and replacement services. We help homeowners select the correct tank size and location while ensuring all connections meet current safety standards and environmental regulations. Our technicians also inspect existing tanks for corrosion, leaks, and wear, addressing potential issues before they become major problems. The result is a safer, cleaner, and more efficient home heating system.

System Sales & Installation

A utility room with plumbing and heating equipment, including a large white hot water tank, pipes, a green boiler, and gauges.

Choosing the right heating system is an investment in your home’s comfort and efficiency. Szadis Heating Service offers expert guidance and product sales for boilers, furnaces, water heaters, and oil tanks. We take the time to understand your space, energy goals, and budget to recommend reliable equipment that fits your needs. Once selected, our skilled installation team ensures each system is properly sized, connected, and tested for optimal performance. With careful attention to detail and quality workmanship, we deliver solutions designed to last for years.

Emergency 24/7 On-Call Service

No Heat? No Problem. We’re Always On Call.

Heating issues can happen anytime, and when they do, Szadis Heating Service is ready. Our team is available 24 hours a day, 7 days a week to restore your heat quickly and safely.

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A completed heating system install with various valves and gauges.
A furnace system with copper pipes, a green expansion tank, a black circulation pump, and various control boxes installed on a wall in a construction area.
A boiler system with multiple pipes, valves, and gauges in a utility room, including a water heater on the right and a green control unit in the center.
Installation of a heating system with copper and black pipes, a furnace, a water heater, and a network of valves and gauges in a utility room.
A utility room with copper piping, a water heater, a green boiler, and control panels installed on a wooden frame wall.
A basement utility room with copper piping, an off-white water heater on the left, a blue Buderus boiler in the center, and a black tankless water heater below it.
A commercial boiler or heater on a concrete block in a basement, with pipes, wires, and a red emergency shut-off switch nearby.
A boiler system with copper pipes, a blue boiler unit, a large gray water heater, and various valves and gauges in a basement setting.
A basement boiler room with copper piping, a water heater, a boiler, and pumps installed on a wooden backboard against a concrete wall.
A large black oil tank install.
A complex plumbing system with copper pipes, gauges, a red expansion tank, black control valves with yellow labels, and a large blue HVAC unit in a basement or utility room.

Whether you’re upgrading your heating system, replacing an oil tank, or facing an emergency, we’re here to help.

Call Today for A Quote!