Lochinvar Boilers

Lochinvar's Knight High Efficiency Boilers are conveniently available in both floor standing and wall mount models, featuring 50,000-285,000 BTU/hr, up to 98.6% low temp application efficiency, PVC venting, fully modulating burner with 5:1 turndown, and SMART SYSTEM control. Also included here is Lochinvar's Knight XL Boiler Series, featuring up to 94.6% thermal efficiency, 399,000-800,000 BTU/hr, fully modulating burner with 5:1 turndown, and SMART SYSTEM control. You can find optional equipment kits for your Knight Boiler here as well.

18 products shown

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  • 64,000 BTU Output Knight High Efficiency Boiler View Specs
    • SKU: KBN081
    • Brand: Lochinvar
    In Stock!
    Ships in 24-48 Hrs (2 Avail)

    $3,265.95 / each

    Free Shipping
  • 64,000 BTU Output Knight High Efficiency Boiler w/ MODBUS Communication View Specs
    • SKU: KBN081-MOD
    • Brand: Lochinvar
    Non-Stock Item
    Allow 2-3 Weeks to Ship Out

    $3,442.95 / each

    Free Shipping
  • 121,000 BTU Output Knight High Efficiency Boiler View Specs
    • SKU: KBN151
    • Brand: Lochinvar
    In Stock!
    Ships in 24-48 Hrs (9 Avail)

    $3,977.95 / each

    Free Shipping
  • 125,000 BTU Output Knight High Efficiency Boiler w/ Fire Tube Heat Exchanger (Wall Mount) View Specs
    • SKU: WHN155
    • Brand: Lochinvar
    In Stock!
    Ships in 24-48 Hrs (9 Avail)

    $3,974.95 / each

    Free Shipping
  • 170,000 BTU Output Knight High Efficiency Boiler View Specs
    • SKU: KBN211
    • Brand: Lochinvar
    In Stock!
    Ships in 24-48 Hrs (5 Avail)

    $4,488.95 / each

    Free Shipping
  • 84,000 BTU Output Knight High Efficiency Boiler View Specs
    • SKU: KBN106
    • Brand: Lochinvar
    In Stock!
    Ships in 24-48 Hrs (3 Avail)

    $3,499.95 / each

    Free Shipping
  • 161,000 BTU Output Knight High Efficiency Boiler w/ Fire Tube Heat Exchanger (Wall Mount) View Specs
    • SKU: WHN199
    • Brand: Lochinvar
    In Stock!
    Ships in 24-48 Hrs (3 Avail)

    $4,489.95 / each

    Free Shipping
  • 232,000 BTU Output Knight High Efficiency Boiler View Specs
    • SKU: KBN286
    • Brand: Lochinvar
    In Stock!
    Ships in 24-48 Hrs (8 Avail)

    $6,216.99 / each

    Free Shipping
  • 324,000 BTU Output Knight XL High Efficiency Boiler View Specs
    • SKU: KBN400
    • Brand: Lochinvar
    In Stock!
    Ships in 24-48 Hrs (4 Avail)

    $8,112.95 / each

    Free Shipping
  • 44,000 BTU Output Knight High Efficiency Boiler w/ Fire Tube Heat Exchanger (Wall Mount) View Specs
    • SKU: WHN055
    • Brand: Lochinvar
    In Stock!
    Ships in 24-48 Hrs (1 Avail)

    $2,548.95 / each

    Free Shipping
  • 406,000 BTU Output Knight XL High Efficiency Boiler View Specs
    • SKU: KBN501
    • Brand: Lochinvar
    In Stock!
    Ships in 24-48 Hrs (3 Avail)

    $10,819.95 / each

    Free Shipping
  • 493,000 BTU Output Knight XL High Efficiency Boiler View Specs
    • SKU: KBN601
    • Brand: Lochinvar
    In Stock!
    Ships in 24-48 Hrs (2 Avail)

    $13,099.95 / each

    Free Shipping
  • 69,000 BTU Output Knight High Efficiency Boiler w/ Fire Tube Heat Exchanger (Wall Mount) View Specs
    • SKU: WHN085
    • Brand: Lochinvar
    In Stock!
    Ships in 24-48 Hrs (2 Avail)

    $3,375.95 / each

    Free Shipping
  • 89,000 BTU Output Knight High Efficiency Boiler w/ Fire Tube Heat Exchanger (Wall Mount) View Specs
    • SKU: WHN-110
    • Brand: Lochinvar
    Non-Stock Item
    Allow 2-3 Weeks to Ship Out

    $3,730.95 / each

    Free Shipping
  • 574,000 BTU Output Knight XL High Efficiency Boiler View Specs
    • SKU: KBN701
    • Brand: Lochinvar
    In Stock!
    Ships in 24-48 Hrs (3 Avail)

    $15,099.95 / each

    Free Shipping
  • 654,000 BTU Output Knight XL High Efficiency Boiler View Specs
    • SKU: KBN801
    • Brand: Lochinvar
    In Stock!
    Ships in 24-48 Hrs (5 Avail)

    $17,299.95 / each

    Free Shipping
  • 323,000 BTU Output Knight High Efficiency Boiler w/ Fire Tube Heat Exchanger (Wall Mount) View Specs
    • SKU: WHN399
    • Brand: Lochinvar
    In Stock!
    Ships in 24-48 Hrs (5 Avail)

    $8,738.95 / each

    Free Shipping
  • 89,000 BTU Output Knight High Efficiency Boiler (Wall Mount) High Altitude Model View Specs
    • SKU: WHN-110-HA
    • Brand: Lochinvar
    Non-Stock Item
    Allow 2-3 Weeks to Ship Out

    $4,099.95 / each

    Free Shipping
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