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Hot-Water & Steam Heat

Boiler Repair & Installation in Sussex County, NJ

Radiator and baseboard heat keeps a lot of Sussex County homes warm. When the boiler acts up, you want a local team that actually knows hydronic systems — not a swap-and-pray contractor.

NJ HVACR Lic. #19HC00108700Family-owned since 199924/7 emergency serviceNewton, NJ & all of Sussex County

Plenty of older homes around Newton, Andover, and the lake communities heat with a boiler and radiators or baseboard loops rather than forced air. Boilers are durable, comfortable, and quiet — but when one starts leaking, banging, or losing pressure, the diagnosis takes real hydronic experience.

We repair, maintain, and replace gas and oil boilers, including high-efficiency condensing models that can cut fuel use significantly. And because a no-heat boiler in January is an emergency, we answer the phone around the clock.

Boiler work we handle

Boiler repair

No heat, leaks, low pressure, short-cycling, banging pipes, or a pilot/ignition that won’t stay lit — diagnosed and fixed, 24/7.

Boiler replacement

Right-sized gas or oil replacement when an aging boiler is past its prime, with proper venting, near-boiler piping, and controls.

High-efficiency condensing boilers

Modern condensing units reach 90%+ efficiency and modulate to the load — a strong upgrade from a 30-year-old cast-iron boiler.

Steam & hot-water systems

We work on both one-pipe and two-pipe steam and modern hot-water (hydronic) loops, including zone valves and circulators.

Annual boiler service

Combustion testing, safety checks, and cleaning to keep the system efficient and protect your warranty and your family.

Oil-to-gas conversions

Switching off oil? We coordinate the conversion end to end, from the new boiler to venting and chimney updates.

Conversion costs →

Boilers and Sussex County winters

Hydronic heat shines in our climate: it delivers steady, draft-free warmth that forced air can’t quite match on a single-digit night, and it doesn’t dry the house out the way some systems do. The trade-off is that boilers need someone who understands water chemistry, near-boiler piping, and combustion — get those wrong and you get noise, short cycling, and wasted fuel.

We’ve serviced these systems across Sussex County for over 25 years. Whether you want to nurse a dependable cast-iron boiler along for another decade or upgrade to a high-efficiency condensing unit, we’ll give you the honest trade-offs — and financing if a replacement is the right call.

Signs your boiler needs attention

  • No heat, or some radiators stay cold while others get hot
  • Banging, knocking, or gurgling pipes (often air or water-chemistry issues)
  • Visible leaks or rust around the boiler or fittings
  • Pressure gauge reading too low or climbing too high
  • The system short-cycles — firing and shutting off rapidly
  • Rising fuel bills with no change in the weather or your habits

How a boiler job goes with us

1

Real diagnosis

We test combustion, pressure, and controls to find the actual fault — not just throw parts at it.

2

Honest options

You get a clear repair-vs-replace recommendation with numbers, so you can decide with confidence.

3

Proper installation

Replacements include correct sizing, near-boiler piping, venting, and controls — the details that determine how long it lasts.

4

Tested & explained

We verify safe operation, bleed the system, and walk you through maintenance to keep it running clean.

Frequently Asked Questions

How long do boilers last?

A well-maintained boiler often lasts 15–30 years — cast-iron units in particular are workhorses. That said, efficiency and reliability drop with age, and a 25-year-old boiler may cost far more to run than a modern condensing model. We’ll give you a straight repair-vs-replace assessment based on the unit’s age, condition, and your fuel bills.

Why are my radiators making banging noises?

Banging (often called water hammer) usually comes from trapped air, sediment, or — in steam systems — condensate that can’t drain properly, sometimes due to pitch or a failing vent. It’s worth addressing: beyond the noise, it signals the system isn’t circulating correctly and can stress the piping.

Should I switch from an oil boiler to gas?

If natural gas is available on your street, converting often lowers your monthly heating costs and removes the need for an oil tank. There are upfront conversion costs (gas line, venting, sometimes chimney relining and tank removal), so it pays to run the numbers — which we’ll do honestly with you.

Do you service steam boilers?

Yes. We work on both one-pipe and two-pipe steam systems as well as modern hot-water (hydronic) loops. Steam systems have their own quirks — vents, pitch, water level — and we know them.

Boiler trouble? Talk to a hydronic-savvy local team.

From a quick repair to a full high-efficiency upgrade, get honest advice from technicians who actually know boilers. Available 24/7.

Schedule Your Free Estimate(973) 948-0680

Request Your Free Quote

Tell us what you need and we’ll get right back to you. No obligation, ever.

Prefer to talk? Call us 24/7 at (973) 948-0680. We never share your information.

At Constant Air, we specialize in delivering high-quality heating, ventilation, and air conditioning services that keep your home and business comfortable all year round.

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