Commercial Gas & Oil Boilers

High-Efficiency Commercial Gas & Oil Boiler Repair, Maintenance & Replacement in Portland, ME | Richardson's Mechanical

At Richardson's Mechanical, we ensure reliable, efficient heating for commercial properties throughout Southern Maine—serving a 1-hour radius around Portland, including Scarborough, Biddeford, Westbrook, South Portland, and Falmouth. Gas and oil boilers are critical for warehouses, offices, retail spaces, restaurants, and multi-tenant buildings, delivering consistent warmth even in Maine's deepest freezes. Our expert team specializes in repairing, maintaining, and replacing these systems to minimize downtime, optimize energy use, and keep operational costs low.

Keep Your Commercial Boiler Operational with Proactive Servicing

Aging boilers lose efficiency over time—dropping from 80-85% AFUE to much lower—due to scale buildup, burner wear, or control failures. This leads to:

  • Higher fuel bills: Inefficient combustion wastes gas or oil.

  • Frequent breakdowns: Strained components cause unexpected shutdowns.

  • Safety risks: Leaks, pressure issues, or carbon monoxide concerns.

Business benefit: Regular servicing extends boiler life by 5-10 years, ensures code compliance, and maintains steady heat for employee productivity and customer comfort. Prevent costly emergencies with our tailored maintenance plans.

Expert Commercial Gas & Oil Boiler Repair Services

When issues arise, our certified technicians provide rapid diagnostics and repairs for all commercial-scale gas and oil boilers:

  • Common repairs: Burner tuning, pump replacements, valve servicing, heat exchanger cleaning, or ignition system fixes.

  • Gas & oil expertise: Precise adjustments for low-NOx burners, fuel lines, and venting to restore peak performance.

  • Minimal disruption: Off-hours scheduling and efficient workflows to keep your business running.

Efficiency boost: Post-repair tuning can improve AFUE by 10-15%, directly lowering your energy expenses.

Commercial Boiler Maintenance to Extend System Life

Our comprehensive preventive maintenance programs include:

  1. Annual inspections: Combustion analysis, safety controls, water quality testing, and component checks.

  2. Cleaning & lubrication: Remove soot, scale, and debris; lubricate motors and bearings.

  3. Performance reporting: Detailed logs with recommendations to track efficiency and plan upgrades.

Long-term value: Businesses see fewer repairs, consistent heating, and qualification for insurance discounts.

Seamless Commercial Gas & Oil Boiler Replacement & Upgrades

If your boiler is over 15-20 years old or repair costs exceed 50% of replacement value, upgrading is the smart move. We handle full removal and installation of high-efficiency models from trusted brands like Weil-McLain, Burnham, and Viessmann:

  • Advanced features: Modulating burners, condensing technology (up to 98% AFUE), and smart controls for zoned heating.

  • Custom sizing: Matched to your building's load, piping, and expansion needs.

  • Rebate opportunities: Guide you through Efficiency Maine commercial incentives, often making new units more affordable than ongoing repairs.

Upgrade experience: A modern boiler means quieter operation, reduced emissions, lower fuel consumption (20-30% savings), and enhanced reliability—boosting your bottom line and sustainability.

Why Richardson's Mechanical for Commercial Gas & Oil Boilers in Southern Maine?

  • Commercial heating authorities: Since 2018 we’ve been servicing large-scale systems in Portland-area businesses.

  • Safety & compliance focus: Licensed for high-pressure boilers, with rigorous protocols.

  • Customer-centric operations: Transparent quotes, 24/7 emergency response, and 100% satisfaction guarantee.

Ready to keep your commercial boiler operational, efficient, and cost-effective? Contact Richardson's Mechanical today at (207) 468-4866 or schedule a free assessment online. From routine servicing to full replacements, we're your partner in uninterrupted heating!

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Satisfied Customers

Service Areas

    • Acton

    • Alfred

    • Arundel

    • Berwick

    • Biddeford

    • Buxton

    • Cornish

    • Dayton

    • Eliot

    • Hollis

    • Kennebunk

    • Kennebunkport

    • Kittery

    • Lebanon

    • Limerick

    • Limington

    • Lyman

    • Newfield

    • North Berwick

    • Ogunquit

    • Old Orchard Beach

    • Parsonsfield

    • Saco

    • Sanford

    • Shapleigh

    • South Berwick

    • Waterboro

    • Wells

    • York

    • Baldwin

    • Bridgton

    • Brunswick

    • Cape Elizabeth

    • Casco

    • Chebeague Island

    • Cumberland

    • Falmouth

    • Freeport

    • Frye Island

    • Gorham

    • Gray

    • Harpswell

    • Harrison

    • Long Island

    • Naples

    • New Gloucester

    • North Yarmouth

    • Portland

    • Pownal

    • Raymond

    • Scarborough

    • Sebago

    • South Portland

    • Standish

    • Westbrook

    • Windham

    • Yarmouth

    • Auburn

    • Durham

    • Greene

    • Leeds

    • Lewiston

    • Lisbon

    • Livermore

    • Livermore Falls

    • Mechanic Falls

    • Minot

    • Poland

    • Sabattus

    • Turner

    • Wales

    • Arrowsic

    • Bath

    • Bowdoin

    • Bowdoinham

    • Georgetown

    • Perkins Township

    • Phippsburg

    • Richmond

    • Topsham

    • Woolwich

Contact Us

Have a question or need HVAC service? Fill out the form below, and our team will get back to you as soon as possible. Whether it’s installations, repairs, maintenance, or emergency service, we’re here to help keep your home or business comfortable year-round!