Heating problems in Nassau County homes aren’t always straightforward. You may notice some rooms heating properly while others stay cold, the system cycling on and off repeatedly, strange noises coming from pipes or radiators, or rising energy bills without a clear reason.
Many Long Island homes have heating systems that have been modified, repaired, or expanded over decades. We’ve seen boilers from the 1960s still running alongside newer controls, added zones, and updated components. That can make diagnosing problems more complicated if you don’t work on these systems regularly.
AJ Services has been repairing heating systems across Nassau County for over 20 years. We work on gas boilers, oil boilers, baseboard systems, and radiant heat, and we’ll give you an honest assessment of what’s actually causing the issue — whether it’s a simple repair or something larger.
Heating System Repairs Nassau County NY
- No heat at all
- One or more zones not heating
- Boiler short cycling
- Pressure problems or fluctuations
- Relief valve dripping
- Banging, knocking, or gurgling noises
- Circulator pump issues
- Zone valve stuck open or closed
- Pilot light issues
- Thermostat communication issues
- System not reaching temperature
- Boiler losing pressure
If you’re not sure what’s wrong, describe what you’re seeing — we’ll help you understand what it likely means.
Most Nassau County homes heat with a boiler. When something goes wrong, you want real diagnosis — not a push toward replacement.We repair all major brands including Weil-McLain, Burnham, Peerless, Navien, Buderus, Slant/Fin, and Crown. We also work on older systems still running after 30+ years.Before any repair, we explain the issue, the cause, and the cost. No work starts until you approve it.Heating Contractor Bellmore NY — Who We Are
AJ Services is a family-owned company based in Bellmore. When you call us, you’re dealing directly with the people who do the work — not a national chain.We’re known for honest assessments. That Baldwin homeowner avoided an unnecessary $8,000 replacement because she called us for a second opinion.That’s why we maintain a 4.9-star rating across 200+ Long Island homeowners.All Heating Systems We Repair
- Gas boilers
- Oil boilers
- Hot water baseboard systems
- Navien condensing boilers
- Radiant floor heating
- Steam heating systems
- Multi-zone hydronic systems
Emergency Heating Repair Long Island — 24/7
Heating emergencies don’t wait. If your heat goes out, we respond 24/7 across Nassau County.Call (516) 807-8700 to speak with a real person and get help fast.Heating Repair Services
Fast diagnosis and repair for gas and oil boilers with pressure, ignition, or heating issues.
Specialized service for Navien condensing systems common across Nassau County.
Fix cold zones, airlocks, leaks, and uneven heat in baseboard systems.
No Heat Emergency Service
24/7 emergency response when your heating system stops working.Boiler Annual Service
Prevent breakdowns and maintain efficiency with annual boiler maintenance.
Full system inspection and preparation before the heating season.
Zone Valve Repair
Restore heat to specific areas of your home with zone valve replacement.Why Long Island Heating Systems Need Special Attention
- Coastal air accelerates corrosion
- Hard water causes scale buildup
- Aging housing stock means older systems
- Cold winters make failures urgent
Heating Repair FAQs
Repair or replace?
If your system is under 20 years old, repair is usually the better option. Older systems may require replacement depending on condition.Why is one room cold?
Usually a zone valve issue, air in the system, or thermostat problem.Why is my boiler banging?
Common causes include ignition delay, water hammer, or scale buildup.Do you service gas and oil systems?
Yes, we service both, including converted systems.Serving all of Nassau County. Call (516) 807-8700 — available 24/7.