✨ Get 20% OFF your first order. ✨

Your Shopping Bag

Your bag is empty

Subtotal $0.00
Shipping Calculated at checkout
Continue Shopping

Durable Green Mountain Gmgs299e, 299,000 Btu Gas Fired Steam Boiler W/burner Instant 85% Discount [rRoCaqic]

$190.99 $611.99 -69%

Green Mountain GMGS299E 299,000 BTU Gas Fired Steam Boiler w/BurnerDependable Cast Iron Heat Exchanger with Cast Iron Push Nipples. The Sections and Push Nipples expand at the same rate when heated. By using similar materials instead of less expensiv

Secure Shopping

100% Safe Guarantee

Free Shipping

On orders over $30

Money-Back

30-Day Guarantee

Green Mountain GMGS299E 299,000 BTU Gas Fired Steam Boiler w/Burner

  • Dependable Cast Iron Heat Exchanger with Cast Iron Push Nipples. The Sections and Push Nipples expand at the same rate when heated. By using similar materials instead of less expensive gaskets, the boiler maintains a water tight seal over time.
  • LWCO (Probe Type), Pressure High Limit Control, Pressure Gauge, Gauge Glass.
  • Atmospheric Chimney Vent Boiler with Integral Draft Hood and Vent Damper. Low profile compact design makes it ideal for low clearance installations.
  • Brass/copper pig tail siphon for long life.
  • 10 Year Limited Warranty - (Residential Applications)

Resource Document: GMGS Series Specifications

Standard Equipment:

  • Boiler Control Module: Honeywell integrated High Limit Control, Vent Damper Control and Intermittent Spark Control housed under a protective cover.
  • Heat Exchanger: Cast Iron Sections with Cast Iron Push Nipples.
  • Combustion: Main Gas Burners, Combination 24 Volt Gas Control (Includes: Automatic Gas Valve, Gas Pressure Regulator, Intermittent Pilot, Safety Shutoff, Pilot Flow Adjustment, Pilot Filter)
  • Safety: Spill Switch, Roll-Out Switch, Automatic Vent Damper.
  • Other: Insulated Boiler Jacket, Integral Draft Diverter, Combination
  • Temperature/Pressure Gauge,
  • Circulator Pump, 3/4 inch Drain Valve, 30lb. ASME Relief Valve.15B204503110204 Also Known As: GMGWB045FE , GMGW045EI

More Information:

  • Manufacturer Green Mountain
  • Series GMGS Series
  • Boiler Type Residential
  • Fuel Type Natural Gas
  • BTU Input 262,000
  • AFUE 82.00%
  • Venting Type Chimney Vent

What Our Customers Say

December 30, 2025

Absolutely no complaints!

I'm impressed with the durability.

- Ezequiel K..

December 30, 2025

Absolutely no complaints!

I use this all the time. It's great.

- Nolan W..

December 30, 2025

Absolutely no complaints!

Exceeds what I was hoping for.

- Jesus O..

Write a Review

You Might Also Like

Discover more great products from our collection.

CE3000K2ACEFS

CE3000K2ACEFS

(382)
$64.99 $207.99 -69%
We Fight For What We Love

We Fight For What We Love

(118)
$54.99 $175.99 -69%
Pulseira D-Vibes PM

Pulseira D-Vibes PM

(405)
$54.99 $175.99 -69%
Persol 3007V 1208

Persol 3007V 1208

(998)
$47.99 $153.99 -69%
Emerald Bracelet  14K Gold

Emerald Bracelet 14K Gold

(496)
$41.99 $134.99 -69%

Copyright 2025 © mappa-mercia.org

VISA
PayPal
Stripe
Mastercard
CASH ON DELIVERY