Technician servicing a residential gas boiler

Boiler Repair for Philly's Radiator & Baseboard Homes

Half of the older homes in Philadelphia still heat with cast-iron radiators or baseboard loops — and we've been servicing them for decades. Cold radiators, banging pipes, leaking valves — we know exactly where to look.

Every boiler type, every symptom

From cast-iron atmospheric boilers to modern condensing combi units, we repair gas, oil and steam systems from Weil-McLain, Burnham, Peerless, Navien, Buderus and more.

No Heat / No Ignition

Failed thermocouples, gas valves and control boards diagnosed and replaced on-site.

Cold Radiators

Trapped air, stuck zone valves and failed circulator pumps identified and repaired.

Leaking Boiler

Failed pressure relief valves, tankless coils and expansion tanks resealed or replaced.

Low Pressure

Auto-feed valve and pressure-reducing valve issues corrected so radiators stay full.

Banging Pipes

Water hammer and expansion knock traced to expansion tanks, air, and pipe supports.

Combi Water Issues

No hot water from a combi boiler — heat exchanger, flow sensor or diverter repairs.

Signs your boiler needs service

Boilers rarely fail completely without warning — these clues appear first.

Cold Radiators Leaking Water Banging Pipes Won't Fire Low Pressure Rising Bills

Quick checks that may resolve the issue

Try these first — sometimes it's a simple reset.

01

Check the Pressure Gauge

Most residential boilers should read 12–15 PSI cold. Low pressure = radiators won't fill. The auto-feed usually restores it, but call if it drops again.

02

Bleed the Radiators

Cold at the top, warm at the bottom means trapped air. Turn the bleed screw on each radiator until water dribbles out, then close.

03

Reset the Boiler

Most boilers have a red reset button. Press once and wait — if it locks out again, don't keep pressing. Call us.

04

Confirm the Thermostat

Set to Heat and above room temp. Some thermostats need a jumper for boilers — worth checking if you recently replaced yours.

When to keep repairing

Newly installed high-efficiency boiler
Repair
Replace
  • Age

    Under 20 years, cast iron in good shape.

    25+ years or leaking from the block.

  • Cost

    Repair under $600 for common parts.

    Cracked section or heat exchanger failure.

  • Efficiency

    80%+ AFUE and steady operation.

    60–70% AFUE — new modulating unit cuts bills 25%+.

  • Reliability

    First failure in years.

    Multiple issues each winter.

  • Fuel Type

    Gas or oil — parts still available.

    Consider fuel conversion to gas from oil.

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Boiler service across Philadelphia

We know the older row-home boiler rooms of South Philly and the sprawling Doylestown mechanical rooms alike.

Center City & South Philly

Cast-iron radiator systems, tight basement layouts, decades of experience.

Northeast & Northwest

Chestnut Hill, Mt. Airy, East Falls — historic homes with hydronic heat.

Bucks County

Newtown, Doylestown, Yardley — larger boilers and multi-zone systems.

Montgomery & Delaware

Cheltenham, Elkins Park, Havertown and Media covered daily.

HVAC Philly technician
A+ Rated

Heat back on today.

Live dispatch during heating season — real people, no phone trees.

Every boiler repair includes combustion analysis on gas units and a written parts-and-labor warranty.

Same-Day Response

Fast dispatch across Philly, Bucks, Montgomery and Delaware counties.

Licensed Technicians

EPA-certified pros who explain the work before we start.

A+ BBB Rated

Transparent pricing and honest recommendations, every visit.

Upfront Pricing

Flat-rate quotes — no surprises once the job begins.