TOP 10 Best High Efficiency Natural Gas Boiler Results at 10Bestify.com

  • Noritz NRC66DVNG Indoor Condensing Direct Tankless Hot Water Heater, 6.6 GPM - Natural Gas

    The NORITZ NRC66DV is a fully condensing tankless water heater with an advanced heat exchanger design and built-in controller. With flow rates up to 6.5 gallons per minute the NRC66DV delivers the highest flow rates in its category and can be vented using 3" Schedule 40/80 PVC, PP or CPVC.  Various adapters and terminations are available to allow for a wide array of venting options.  This unit ships complete with a 6' power cord.  IK-WV-200-1-XX-LF valve kit (required for installation) is sold separately. Common companion items include rain cap (PRC-1), atmospheric conversion kit (SVCK-3) and horizontal termination/intake PVT-HL....
    Best High Efficiency Natural Gas Boiler

    • ASIN: B00CI4YS3G
    • Brand: Noritz
    • UPC: 727904482106

  • Takagi T-H3-DV-N Condensing High Efficiency Natural Gas Indoor Tankless Water Heater, 10-Gallon Per Minute

    With gas inputs of 199,000 BTU, the T-H3 can produce enough hot water for four bathrooms in warmer climates or three baths in colder climates.
    Best High Efficiency Natural Gas Boiler

    • ASIN: B00DDPZ5HM
    • Color: White
    • Brand: TAKAGI
    • UPC: 671657140946

  • Rinnai RUC98iN Ultra Series Natural Gas Tankless Water Heater, Twin Pipe

    Rinnai takes tankless water heating one step further with condensing technology that delivers more efficiency than ever before. Enjoy all the same tankless benefits you’ve come to expect from Rinnai, plus even greater energy savings. Features: 95% Thermal Efficiency Natural gas or propane Indoor Installation Only 98° F to 140° F Residential Temperature Range 98° F to 185° F Commercial Temperature Range Commercial Controller Must be Purchased Separately Gas Rate Input BTU's: 15,200 - 199,000 Electronic Ignition Meets California and Texas NOx Emissions Standards Compatible with Full Line of Rinnai Digital Controllers 12-Year Warranty on H...
    Best High Efficiency Natural Gas Boiler

    • ASIN: B00OBVKBB2
    • Brand: Rinnai
    • UPC: 766156008160

  • Rinnai V65eN Tankless Hot Water Heater, Large, V65eN-Natural Gas/6.5 GPM

    Rinnai's V65E exterior-mount tankless water heater efficiently delivers up to 6.6-Gallon per minute (GPM) of hot water, making it perfect for your one to two and half bathroom home. This easy-to-install, ultra-compact unit lets you enjoy all the benefits of Rinnai tankless water heating. You'll experience clean, reliable hot water at a consistent pre-set temperature, while saving energy and precious floor space in your home.
    Best High Efficiency Natural Gas Boiler

    • ASIN: B0084CPEDE
    • Color: V65eN - Natural Gas/6.5 GPM
    • Brand: Rinnai
    • UPC: 766156007118

  • Noritz CB199-DV-NG Combi Boiler

    Noritz introduces the cb series of combination-boilers: the newest line of condensing combination boilers capable of delivering whole home hydronic heat and industry leading volume of domestic hot water (dhw) for large homes, including those in colder climates. The new cb series combi-boilers are designed for quick and easy installation and also include features to deliver valuable cost SAVINGS. Cb series combi-boilers also take up as much as 80 percent less space than a traditional floor-standing boiler and water heater. Some of the exciting new features include Max flow up to 9.2 gpm, 140 degree domestic water heating capability even in win...
    Best High Efficiency Natural Gas Boiler

    • ASIN: B019MODLTG
    • Brand: Noritz
    • UPC: 817000013165

  • Takagi T-H3J-DV-N Condensing High Efficiency Natural Gas Indoor Tankless Water Heater, 6.6-Gallon Per Minute

    With gas inputs of 160,000 BTU, the T-H3J can produce enough hot water for two bathrooms in warmer climates or 1.5 baths in colder climates.
    Best High Efficiency Natural Gas Boiler

    • ASIN: B00DDPZ4AK
    • Color: natural gas
    • Brand: TAKAGI
    • UPC: 671657141929

  • Rinnai V65IN 6.6 GPM Indoor Low NOx Tankless Natural Gas Water Heater

    Features ENERGY STAR Qualified Energy Factor of .82 for Natural Gas and Propane Certified for Installation in Manufactured (Mobile) Homes Leak detection shuts off water to unit to limit property damage Enhanced scale detection lessens possibility of serious, long-term damage to unit Temperature lock prevents accidental or unauthorized changes to water temperature Complies with South Coast Air Quality Management District 14 ng/J or 20 ppm NOx emission levels Rinnai Value Series Tankless Water Heater Product Warranty Dimensions Width: 14 Inches Height: 23 Inches Depth: 9 Inches Weight 45.6 Pounds Ignition Direct Electronic Hot Water Capacity 0....
    Best High Efficiency Natural Gas Boiler

    • ASIN: B0084CPEDO
    • Color: V65iN - Natural Gas/6.5 GPM
    • Brand: Rinnai
    • UPC: 766156007095

  • Weil-McLain 383-500-700 Ultra 80 High Efficiency Natural Gas Boiler, 95.2% AFUE

    Weil-McLain 383-500-700 Ultra 80 High Efficiency, Condensing, Natural Gas Boiler with Taco 007 Circulator Pump (95.2% Efficiency). BTU Input: 80,000; BTU Output: 62,000. Vent Size: 3"; Water Connection: 1"; Gas Connection: 1/2". Warranty: Limited 15 Year Warranty on Heat Exchanger; 1-Year on Parts.
    Best High Efficiency Natural Gas Boiler

    • ASIN: B0062OYQ6C
    • Brand: Weil-McLain

  • Rheem RTGH-95DVLN 9.5 GPM Indoor Direct Vent Tankless Natural Gas Water Heater

    All Rheem heating, cooling and water heater heating products meet and exceed rigorous industry standards for quality and reliability. From raw material delivery to finished product assembly, each phase in the manufacturing process is effectively overseen to ensure the highest quality in water heater manufacturing. Rheem products are frequently tested and certified by various government and third-party testing labs to ensure quality standards.
    Best High Efficiency Natural Gas Boiler

    • ASIN: B0084CPDFS
    • Brand: Rheem
    • UPC: 020352609935

  • Noritz CB180-DV-LP CB180DVLP Indoor Direct Combination Boiler (Standard Vent Convertible) with Built-in Pump, max. 180,000 BtuH DHW, 10.1 Gym, 100,000 But Space Heating-LP, White

    Noritz introduces the cb series of combination-boilers: the newest line of condensing combination boilers capable of delivering whole home hydronic heat and industry leading volume of domestic hot water (dhw) for large homes, including those in colder climates. The new cb series combi-boilers are designed for quick and easy installation and also include features to deliver valuable cost SAVINGS. Cb series combi-boilers also take up as much as 80 percent less space than a traditional floor-standing boiler and water heater. Some of the exciting new features include Max flow up to 9.2 gpm, 140 degree domestic water heating capability even in win...
    Best High Efficiency Natural Gas Boiler

    • ASIN: B019MODLUK
    • Color: White
    • Brand: Noritz
    • UPC: 817000013141

  • Weil Mclain 383-500-724 Ultra 230 CT High Efficiency Boiler Natural Gas

    Gas fired water boiler with cast aluminum heat exchanger Negative regulated gas valve precisely delivers gas to the boiler Designed to operate in low temperature condensing applications Fuel Type: Natural Gas Vent Size:3" x 4" System Type: Hydronic (Water) Water Connection: 1" Gas Connection: 1/2" BTU Input: 230000 DOE Rating:207000 IBR Rating:183000 Depth (Inches):19-15/16" Height (Inches):43-1/16" Width (Inches):22-13/16" Vent Type:PVC No Alaska, Hawaii, APO/FPO or PO Box Delivery Available for this
    Best High Efficiency Natural Gas Boiler
    Weil Mclain 383-500-724 Ultra 230 CT High Efficiency Boiler Natural GasGas fired water boiler with cast aluminum heat exchangerDesigned to operate in low temperature condensing applicationsNegative regulated gas valve precisely delivers gas to the boilerElectronic control module automatically adjusts blower speed and gas flow rate in response to

    • UPC: 177707626
    • Model: 383-500-724

  • Boiler Types: Standard vs. High Efficiency

    This video with our own Bill Bailey discusses the difference between non-condensing and condensing boilers. And then even dives down into the difference between low mass condensing and high mass c...
    boiler,hydronic,efficiency,heating

    Why Your New "High Efficiency" Hot Water Boiler Isn't Saving Money On Fuel Costs

    Why isn't your high-efficiency boiler saving you any money?? These systems are designed to run cooler water temps for longer periods of time, yet the consumer is "conditioned" to expect instant gr...
    Boilers,HVAC,Home Heating,Mod/Con,Hot Water,Thermostat,Energy effiencient,fuel Savings,Furnance,H...

    Top 10 Best Boilers of 2018 Reviews.

    Top 10 Best Boilers of 2018 Reviews. 10. Peerless WBV/WV 9. Buderus G215 8. Buderus G115WS 7. Peerless MI 6. Westinghouse Combi Boiler 5. Slant/Fin Galaxy GXHA 4. Triangle Tube Challenger Solo...
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