Plumbing Service

Gas Fired Boiler Installation in Yonkers, NY

A new natural gas boiler sized right for your home.

Replacing an old boiler with a new gas-fired model offers reliable, efficient heat through Westchester winters. Proper installation includes sizing, venting, piping, and controls so the system runs quietly and safely.

Sizing a boiler the right way

Many older boilers in Yonkers were sized generously decades ago, sometimes by simply matching the old unit or by rule of thumb. Since then, homes have gained insulation, new windows, and weatherstripping, so the original size may now be far too large. An oversized boiler short-cycles, turning on and off frequently, which wastes fuel and wears components.

We size new boilers using a heat loss calculation that considers your home's construction and radiation, and for steam systems we measure the connected radiators, since steam boilers must be matched to the radiation they serve.

Venting, chimneys, and piping

Conventional gas boilers typically vent through a chimney, and older masonry chimneys may need a liner to handle the cooler, moisture-laden exhaust of modern equipment. High-efficiency condensing boilers vent through a sidewall with plastic pipe and need a condensate drain.

Near-boiler piping matters as much as the boiler itself. Proper piping protects the boiler from thermal shock, ensures good circulation, and in steam systems produces dry steam that heats evenly and quietly. We install to manufacturer requirements and inspection standards.

What to expect on installation day

Most gas boiler replacements take one to three days depending on the system. On the first day, the old boiler is drained, disconnected, and removed, which in older homes can mean breaking a heavy cast-iron unit into sections to carry it up narrow basement stairs. The new boiler is then set, piped, and connected to gas, venting, and controls. Before firing, we fill and purge the system of air, check gas connections for leaks, and verify safety controls. After startup, we measure combustion, confirm every zone heats, and show you the thermostat, the pressure gauge, and what normal operation looks like.

What's Included

  • Heat load calculation
  • Old boiler removal
  • New boiler installation
  • Venting and chimney liner review
  • Near-boiler piping
  • Startup and combustion testing

Our Process

  1. 1

    Calculate heat loss

    We size the boiler for your home as it is today.

  2. 2

    Review venting

    Chimney condition or sidewall venting is planned.

  3. 3

    Install and pipe

    The boiler is set and piped to manufacturer specifications.

  4. 4

    Start up and test

    Combustion, controls, and safeties are tested before we leave.

Why Choose Expert Plumbing of Yonkers for Gas Fired Boiler Installation

Right-sized equipment

Avoids short-cycling and wasted fuel.

Chimney awareness

We address liner needs for safe venting.

Correct near-boiler piping

Critical for efficiency and longevity.

Permit handling

We coordinate required permits and inspections.

Yonkers Insight

Replacing oversized old boilers

Many Yonkers homes have boilers sized decades ago before insulation and window upgrades. A new gas boiler is often smaller and more efficient. Con Edison supplies natural gas across Yonkers, making gas boilers a common choice.

Where We Provide Gas Fired Boiler Installation

We offer gas fired boiler installation throughout greater Yonkers, including:

Yonkers Scarsdale Eastchester White Plains Hartsdale Ardsley

Frequently Asked Questions

How long does installation take?+

Usually one to three days.

Do I need a permit?+

Yes, typically.

Should I get a high-efficiency model?+

We explain the tradeoffs.

Will my radiators work?+

Usually yes.

Can I stay home without heat during installation?+

In most cases heat is off for only part of the installation. In very cold weather we plan the work to restore heat as quickly as possible.

Need Gas Fired Boiler Installation? Call Our Heating Team.

Talk to a Yonkers heating technician today and get your system running right.

Request an Estimate