(516) 259-1191 (516) 345-3911 (516) 548-0911
    home+ — Home+ Air and Heat
    24/7 Emergency(516) 259-1191
    ESEspañol
    ESEspañol
    Navien logo

    Navien

    mid-range
    4.75
    Bosch logo

    Bosch

    mid-range
    4.65

    Navien vs Bosch

    Expert head-to-head boiler comparison by Nassau County installers with 10+ years installing both brands on Long Island.

    Head-to-Head Scorecard

    2

    Navien

    2 wins

    2 ties
    1

    Bosch

    1 win

    Winner
    Efficiency
    Draw
    🛡️Reliability
    Draw
    💰Price
    Winner
    Winner
    📋Warranty
    Draw
    🔧Dealers
    Draw

    Navien leads overall

    Performance Score Rings

    Navien
    Bosch
    4.75
    Rating
    Rating◀ WINS
    4.65
    Rating
    97%
    AFUE Max
    AFUE Max◀ WINS
    96%
    AFUE Max
    3
    Boiler Types
    Boiler TypesTIE
    3
    Boiler Types
    Navien logo

    Navien

    mid-range
    Rating
    4.75/5
    AFUE Max
    97%
    Price
    $3.5k – $8.0k
    Parts Warranty
    5 years

    Top Strengths

    • Best value in condensing technology - premium efficiency at mid-range prices
    • Same-day parts available at F.W. Webb Hicksville
    • Wall-mounted design saves 6-8 sq ft of basement space

    Watch Out For

    • Electronics require surge protector - essential for Long Island power quality
    • Annual descaling essential due to Long Island hard water
    Bosch logo

    Bosch

    mid-range
    Rating
    4.65/5
    AFUE Max
    96%
    Price
    $3.8k – $9.0k
    Parts Warranty
    5 years

    Top Strengths

    • German engineering quality
    • Competitive mid-tier pricing
    • 95% AFUE efficiency

    Watch Out For

    • Aluminum vs stainless heat exchanger
    • 5-year base warranty shorter than some

    Swipe to compare

    Expert Verdict

    Navien wins for combi boiler applications with superior efficiency and smart features. Bosch offers broader product range and German engineering heritage.

    Pick Navien when…

    You want the most efficient combi boiler with WiFi control and the best condensing technology on the market.

    Full Navien review

    Pick Bosch when…

    You prefer German engineering heritage and want a versatile brand that covers both boilers and heat pumps.

    Full Bosch review

    Category-by-Category Breakdown

    Click any category to see why one brand wins.

    Full Specification Comparison

    SpecNavienBosch
    Overall Rating
    4.75/5
    4.65/5
    Price Range (Installed)
    $3.5k – $8.0k
    $3.8k – $9.0k
    AFUE Range
    95–97%
    95–96%
    Parts Warranty
    5 years
    5 years
    Heat Exchanger Warranty
    15 years
    10 years
    Founded
    1978
    1886
    Country
    South Korea
    Germany/Turkey
    Parent Company
    KD Navien
    Robert Bosch GmbH

    Warranty Comparison Timeline

    Navien
    Bosch
    0yr5yr10yr15yr20yr25yr
    Parts Warranty
    5 years
    5 years
    Heat ExchangerNavien leads
    15 years
    10 years

    * All warranties shown assume product registration. Unregistered units typically receive 5-year coverage.

    Visual Comparison

    Navien
    Bosch
    Overall Rating
    4.75/5vs4.65/5
    AFUE Max
    97%vs96%
    Boiler Types
    3 typesvs3 types

    Pros & Cons

    Navien

    Strengths

    • Best value in condensing technology - premium efficiency at mid-range prices
    • Same-day parts available at F.W. Webb Hicksville
    • Wall-mounted design saves 6-8 sq ft of basement space
    • NCB-E combi ideal for Cape Cods and smaller Long Island homes
    • Built-in recirculation pump for instant hot water

    Weaknesses

    • Electronics require surge protector - essential for Long Island power quality
    • Annual descaling essential due to Long Island hard water
    • Relatively new to US market since 2006
    • No steam boiler options - hot water and combi only

    Bosch

    Strengths

    • German engineering quality
    • Competitive mid-tier pricing
    • 95% AFUE efficiency
    • Straightforward installation
    • Good local parts network

    Weaknesses

    • Aluminum vs stainless heat exchanger
    • 5-year base warranty shorter than some
    • Less premium than Viessmann
    • Some advanced features cost extra

    Need Help Choosing Between Navien and Bosch?

    Our NATE-certified technicians install both brands daily. Get a free, no-pressure quote.

    Long Island Installation Guide

    Long Island Installation Guide

    Both brands are popular choices for Long Island homeowners upgrading from old cast iron systems to modern condensing boilers. Navien dominates the combi boiler market while Bosch offers more flexibility with their Greenstar line. Both qualify for PSEG efficiency rebates.

    Climate Zone 4A

    Coastal Salt Air

    PSEG Rebates

    Customer Reviews

    Navien vs Bosch FAQ

    Is Navien or Bosch better for Long Island homes?

    Navien wins for combi boiler applications with superior efficiency and smart features. Bosch offers broader product range and German engineering heritage.

    Which is cheaper to install in Nassau County, Navien or Bosch?

    Navien ranges from $3.5k – $8.0k installed, while Bosch ranges from $3.8k – $9.0k installed in Nassau County.

    Are Navien and Bosch made by the same company?

    No. Navien is made by KD Navien, while Bosch is made by Robert Bosch GmbH.

    What warranty does Navien offer vs Bosch?

    Navien offers 5 years parts warranty and 15 years heat exchanger warranty. Bosch offers 5 years parts warranty and 10 years heat exchanger warranty.

    Still Deciding?

    Get a free, personalized recommendation based on your home.

    ← View All Best Boiler Brands