10 BEST GAS BOILERS for sale in 2024 – compare between the best gas boilers on sale.

Rank Product Rating
1
Rinnai M-Series Natural Gas Condensing Boiler
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Product Highlights
  • Rinnai M160SN - Natural Gas Condensing Boiler
  • Flexible venting options with approved Concentric, PVC, CPVC, Stainless Steel, Polypropylene (rigid and flex), for single-pipe exhaust, room air and two-pipe systems
  • Stainless steel primary boiler heat exchanger for unmatched performance and durability; Copper nickel integrated DHW plate heat exchanger
  • Compact wall-mounted design saves space over traditional boilers

$1,915.30
2
Rinnai i150SN Condensing Gas Boiler, i150SN-Natural
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Product Highlights
  • Rinnai i150SN - Natural Gas Condensing Boiler
  • The i150SN condensing gas boiler heat-only model offers the comfort of whole home heating.
  • This heat-only model offers an outdoor reset to optimize your home heating performance and features an integrated modulating pump, with an outdoor reset sensor (in the box)
  • Excellent operational performance with 95% AFUE efficiency and Energy Star Most Efficient certified.

$2,643.75
3
Honeywell International VR8200A2132 Valve
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96 Reviews
Product Highlights
  • Includes: One 1/2" x 3/8" straight busing, one 3/4" straighr flange, one hex wrench, one pilot compressing fitting for 1/4" O.D. tubing, 393691 Natural to LP gas conversion kit
  • Gas valves include manual valve, two automatic operators, servo pressure regulator and pilot adjustment
  • Solenoid-operated first automatic valve opens on thermostat call for heat; closes when call for heat ends
  • Diaphragm-operated second automatic valve opens under control of regulator; closes if gas or power supply is interrupted

$96.23
4
Rinnai RU199iN Sensei Super High Efficiency Tankless Water Heater, 11 GPM - Natural Gas: Indoor Installation
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63 Reviews
Product Highlights
  • RU199iN Sensei SE+ Super High Efficiency Tankless Hot Water Heater - Natural Gas: Indoor Installation Only
  • Up to 11 GPM hot water flow rate (varies by groundwater temp)
  • 15,000 BTU (Minimum) / 199,000 BTU (Maximum)
  • Circ-Logic technology allows you to set recirculation patterns that coincide with your typical habits. Hot water is available when you need it!

$2,054.00 $1,499.85
5
Rinnai RUC98iN Ultra Series Indoor Natural Gas Tankless Water Heater, Twin Pipe
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82 Reviews
Product Highlights
  • INDOOR installation only. Fuel Type: NATURAL GAS.
  • Concentric or PVC venting option
  • Up to 0.96 Energy Factor/Up to 0.92 Uniform Energy Factor
  • The space-saving design allows Indoor Installation type

$1,510.00
6
Vitodens 100-W, B1KA-125 Wall-Mounted Gas-Fired Condensing Boiler
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Product Highlights
  • wall-mounted, gas-fired condensing boiler with modulating stainless steel MatriX cylinder burner
  • 125,000 BTU's
  • Reliable and Manufacturer Warranty Backed
  • Made in Germany

$3,250.00
7
Excel Pro Tankless Gas Water Heater NATURAL GAS 6.6 GPM Whole House and for Hydronic heating Compare to Rinnai, Rheem,Noritz, Bosch FREE FLUE KIT
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Product Highlights
  • Modulates heat output in response to the flow rate of water running through the unit.
  • Power vented directly vertically (rooftop) or sideways (wall) via Stainless Steel CAT III Flue 3.5" Diameter Included (20")
  • NATURAL GAS - European Model - Digital Display is in Celsius
  • Delivers 6.6 gpm of hot water with a 35°F Instant Temperature Rise (Equivalent to 5.5gpm with a 45F temp Rise)

$399.00
8
Gas Heating: Furnaces, Boilers, Controls, Components
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2 Reviews
Product Highlights
  • Jason Obrzut CMHE (Author)
  • English (Publication Language)
  • 228 Pages - 01/01/2019 (Publication Date) - ESCO Press (Publisher)

$54.95
9
Carlin 9859210FRU Universal EZGas Pro Gas Conversion Burner with 10' Air Tube for Boilers 50,000 - 275,000 BTU
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Product Highlights
  • IMPORTANT The Carlin EZGas Pro burner should be installed or serviced only by licensed and trained professionals. Failure to do so will void the warranty.
  • Carlin 9859210FRU Universal EZGas Pro Gas Conversion Burner with 10" Air Tube for Boilers
  • Diffuser Plates: Includes three diffuser plates to accommodate various BTU input ranges: “A” Diffuser Plate: 175,000 - 275,000 BTUH “B” Diffuser Plate: 50,000 - 175,000 BTUH 9-Slot Diffuser Plate: 70,000 - 230,000 BTUH
  • Air Bands: Includes two air bands to accommodate various BTU input ranges: 1-Slot: 50,000 - 175,000 BTUH 2-Slot: 175,000 - 275,000 BTUH

$805.00
10
Meter Star Inlet 1' BSP and Outlet 1/4' BSP Thread Aluminium Sand Casting Venturi Burner Head Hardware Machining Industrial Heater or Boiler Gas Inlet Without Nozzle
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2 Reviews
Product Highlights
  • Inlet 1"BSP & Outlet 1/4"BSP Thread
  • Material: Sand casting alumium
  • This is a Industry Heating product Venturi Body (Nozzle and fittings not included)
  • It can be a DIY burner of any Product for High pressure

$15.99

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