One-pipe & two-pipe steam specialists

    Steam Boiler Repair in Nassau County

    Steam heat is its own trade. Banging pipes, spitting vents, cold radiators and surging water lines all have specific causes—and most general HVAC techs never learn them. Our technicians work on the steam systems in Nassau County's older and historic homes every week.

    What we fix

    Common steam boiler problems

    Steam systems run at ounces of pressure, not pounds. Small venting, pitch and control problems create the symptoms below.

    Banging & hammering pipes

    Water hammer from pooled condensate, sagging pipes, bad pitch or excessive pressure. We trace the noise to the section of piping or control causing it.

    Spitting or hissing air vents

    Failed radiator vents and main vents cause spitting, constant hissing and slow heating. Vent replacement is one of the most common steam repairs.

    Uneven or cold radiators

    Some rooms roasting while others stay cold is a venting and balancing problem—main vents, radiator vents and cycle settings, not necessarily a bad boiler.

    Water level problems

    Low-water cutoff trips, frequent automatic feeding, or a surging water line point to leaks, return-line issues or a dirty boiler that needs skimming.

    Pressuretrol & control failures

    A steam boiler should run at very low pressure. A mis-set or failed pressuretrol causes short cycling, noise and high fuel bills.

    Leaking radiator valves & fittings

    Leaks at radiator valves, unions and fittings waste water and damage floors. We repair or replace the leaking component and check system pressure.

    Why steam repair is a specialty

    A steam boiler is not a hot-water boiler with the temperature turned up. The physics are different, and so is the repair approach.

    Steam runs at 1–2 PSI or less—pressure set too high causes noise, spitting vents and wasted fuel
    Pipe pitch matters: condensate must drain back while steam rises, or pipes bang
    Air vents on mains and radiators control how evenly the whole house heats
    Low-water cutoffs and automatic feeders protect the boiler—and signal leaks when they run often
    A new boiler must be sized to the connected radiation (EDR), not just the old boiler's rating
    Skimming a new or dirty boiler removes oils that cause surging and waterline problems

    Repair or replace a steam boiler?

    Usually a repair

    • Failed air vents or steam traps
    • Pressuretrol, gauge glass or low-water cutoff issues
    • Leaking radiator valves and fittings
    • Burner service and combustion adjustments
    • Banging from pipe pitch or venting problems

    Time to discuss replacement

    • Leaking boiler sections or repeated low-water shutdowns
    • Boiler badly oversized or undersized for the connected radiators
    • Chronic water loss with no repairable leak found
    • Repair cost approaching the value of the equipment
    • Converting fuel or planning a larger heating upgrade
    Steam boiler installation options

    Boiler Brands We Service

    Experienced technicians on all major manufacturers

    Popular
    Weil-McLain
    Popular
    Burnham
    Popular
    Navien
    Bosch
    Lennox
    Slant/Fin
    Triangle Tube
    Lochinvar
    Buderus
    Rinnai
    Crown Boiler
    Viessmann

    Don't see your brand? We service all boiler makes and models. Call to confirm (516) 259-1191

    Visit or call us

    Home+ Air & Heat

    55 Jericho Tpke, Suite 203

    Jericho, NY 11753

    Hours

    Open 24 hours, 7 days a week

    Serving Nassau & Western Suffolk

    Steam boiler repair FAQs

    Steam system acting up?

    Call and describe the symptoms—banging, spitting vents, cold radiators or water problems. Dispatch confirms the current appointment window and diagnostic terms.

    Call (516) 259-1191
    Current Offers

    Deals & Savings

    View All
    LIMITED TIME FINANCING
    0% FOR 25 MONTHS

    Financing On New System Installs

    Limited-time 0% interest for 25 months on qualifying installations of $2,500+. No money down, no prepayment penalty. Subject to credit approval.

    Exp. Limited Time
    HEATING SPECIAL
    $500 OFF

    Furnace Installation

    Save $500 on a new high-efficiency furnace installation with our 10-year labor warranty.

    Exp. December 31, 2026