Boiler Repair, Replacement & Installation

Your boiler is a critical component of your building’s heating system, providing reliable heat for occupants, equipment, and operations throughout the colder months. When a boiler begins to fail, it can result in inconsistent temperatures, increased operating costs, or unexpected system shutdowns. D.M. Kelly Mechanical provides professional commercial boiler services for gas and electric systems, delivering experienced diagnostics, skilled workmanship, and clear recommendations. Whether your facility requires targeted repairs or a full boiler replacement, our team helps restore dependable, efficient heating while minimizing downtime and maintaining safety.

What We Offer

• Commercial Boiler Repair — Diagnosis and repair of heating issues including loss of heat, pressure irregularities, system faults, abnormal noises, leaks, and ignition or control failures.

• Commercial Boiler Replacement — Complete removal and installation of new boiler systems when existing equipment is no longer reliable or cost‑effective to repair.

• New Commercial Boiler Installation — Proper sizing and installation for new construction, renovations, facility expansions, or system upgrades.

• Energy‑Efficient Boiler Upgrades — High‑efficiency commercial boiler solutions designed to improve performance, increase reliability, and reduce long‑term operating costs.

• Preventative Maintenance & Tune‑Ups — Scheduled inspections, cleaning, combustion analysis, pressure checks, and safety testing to extend equipment life and reduce the risk of downtime.

Signs You Need Service

• No heat or inconsistent heating throughout

• Boiler making banging, whistling, or gurgling noises

• Rising heating bills with no change in usage

• Water leaks or visible corrosion near the boiler

• Low or fluctuating system pressure

• Radiators not heating evenly

• Boiler is 15+ years old or needing frequent repairs

If you’re noticing any of these issues, don’t wait for a breakdown. Our technicians can inspect your system and help you decide whether repair or replacement makes the most sense.

Common Questions

How long do commercial boilers last? Most commercial boiler systems last 20–30 years with proper maintenance. System lifespan depends on usage, water quality, operating conditions, and routine service. High‑efficiency commercial boilers can achieve long service lives when maintained on a scheduled basis.

Should I repair or replace my commercial boiler? If your boiler is aging, experiencing frequent breakdowns, or driving up operating costs, replacement may be the more cost‑effective long‑term solution. We evaluate system condition, efficiency, and repair history to help you make an informed decision.

Are commercial boilers energy efficient? Modern commercial boilers are designed for high efficiency and dependable performance across large or variable loads. Upgrading from older equipment can significantly reduce energy consumption and improve temperature consistency throughout the facility.

How long does commercial boiler installation take? Installation timelines vary based on system size, configuration, and site conditions. Most commercial boiler replacements are completed within a few days, with larger or more complex systems requiring additional coordination and phased scheduling.

Do you service all commercial boiler brands? Yes. We service and install all major commercial boiler brands and system types, including gas and electric boilers, cast iron, condensing, and modular systems.