{"title":"High Efficiency Natural Gas Combi Boilers","description":"\u003cp\u003eOur High Efficiency Natural Gas Combi Boilers feature advanced, dual‑purpose systems engineered to deliver both home heating and domestic hot water with exceptional performance. These High Efficiency Natural Gas Combi Boilers provide powerful, consistent heat while maximizing fuel utilization, making them ideal for homeowners seeking lower operating costs and year‑round comfort. Built with condensing technology, modulating burners, and stainless‑steel heat exchangers, High Efficiency Natural Gas Combi Boilers offer precise temperature control, reduced cycling, and quieter operation throughout the heating season.\u003c\/p\u003e\n\n\u003cp\u003eThis collection includes wall‑hung and floor‑standing models with a wide range of BTU capacities to support everything from small residences to larger multi‑zone hydronic systems. Many units feature outdoor reset controls, low‑temperature radiant compatibility, and high domestic‑hot‑water output for showers, kitchens, and laundry. Compact footprints and sealed‑combustion designs make installation flexible, efficient, and safe in tight mechanical spaces.\u003c\/p\u003e\n\n\u003cp\u003eTechnicians appreciate the accessible service panels, simplified venting options, and compatibility with modern circulators, zone valves, and indirect accessories. Whether you’re upgrading an older boiler or installing a high‑performance system in a new build, these combi units deliver exceptional efficiency, reduced emissions, and long‑lasting reliability.\u003c\/p\u003e\n\n\u003cp\u003eExplore the collection to find a high‑efficiency combi boiler designed for superior comfort and year‑round performance.\u003c\/p\u003e","products":[{"product_id":"navien-nfb-h-series-199k-btu-high-capacity-condensing-boiler-95","title":"Navien NFB-H Series 199K BTU 95% Tankless Condensing Boiler","description":"\u003cp\u003eThe Navien NFB-H Series 199K BTU Condensing Boiler is a high-efficiency, wall-hung heating solution designed for residential and light commercial applications. This condensing boiler delivers 95% AFUE and supports advanced multi-zone heating with smart controls and compact design.\u003c\/p\u003e\n\n\u003cp\u003e🔥 Product Overview\u003cbr\u003e•         Model: NFB-200H\u003cbr\u003e•         BTU Input: 199,900 BTU\/hr\u003cbr\u003e•         Efficiency: 95% AFUE – ENERGY STAR® certified\u003cbr\u003e•         Type: Condensing fire tube boiler\u003cbr\u003e•         Application: Residential and light commercial heating\u003c\/p\u003e\n\n\u003cp\u003e⚙️ Key Features\u003cbr\u003e•         Patented Stainless Steel Fire Tube Heat Exchanger – Reduces weld stress points and improves durability\u003cbr\u003e•         Smart Controls with Setup Wizard – Simplifies installation and startup\u003cbr\u003e•         Advanced User Interface – Intuitive text display with Quick Dial Wheel for easy navigation\u003cbr\u003e•         Built-in Connections for 3 Zone Pumps or Valves – Supports multi-zone heating without external controls\u003cbr\u003e•         Common Venting \u0026amp; Cascading – Vent up to 8 units together and cascade up to 16 boilers for large systems\u003cbr\u003e•         15:1 Turndown Ratio – Maximizes efficiency by matching output to demand\u003cbr\u003e•         Non-Metallic Condensate Base – Corrosion-resistant and maintenance-friendly\u003cbr\u003e•         High Altitude Approved – Operates up to 10,100 ft with included conversion kits\u003c\/p\u003e\n\n\u003cp\u003e📐 Specifications\u003cbr\u003e•         Venting Options:\u003cbr\u003e•         2\" venting up to 65 ft\u003cbr\u003e•         3\" venting up to 150 ft\u003cbr\u003e•         Fuel Type: Natural Gas or Propane\u003cbr\u003e•         DOE Heating Capacity: ~183,000 BTU\/hr\u003cbr\u003e•         Mounting: Wall-hung, compact design\u003cbr\u003e•         Dimensions: Approx. 17.3\" W x 28.1\" H x 13.2\" D\u003c\/p\u003e\n\n\u003cp\u003e🏡 Applications\u003cbr\u003e•         Ideal for homes, multi-family buildings, and small commercial spaces\u003cbr\u003e•         Compatible with hydronic heating systems, radiant floor heating, and indirect water heaters\u003c\/p\u003e\n\n\u003cp\u003eNavien’s NFB-H Series combines cutting-edge fire tube technology with smart controls and compact design, making it one of the most advanced condensing boilers available today.\u003c\/p\u003e\n\n\u003cp\u003eWe service and install all types of HVAC heating and cooling equipment throughout Long Island, including (but not limited to) this coverage area:\u003c\/p\u003e\n\n\u003cp\u003eNassau County: Oyster Bay, Hempstead, North Hempstead, Glen Cove, Long Beach, Freeport, Valley Stream, Garden City, Great Neck, Mineola, Hicksville, Levittown, Massapequa, Bethpage, Plainview, Syosset, Jericho, Westbury, Rockville Centre, Farmingdale\u003c\/p\u003e\n\n\u003cp\u003eSuffolk County: Huntington, Babylon, Islip, Smithtown, Brookhaven, Riverhead, Shelter Island, Southold, Southampton, East Hampton, Commack, Deer Park, Lindenhurst, Bay Shore, Brentwood, Central Islip, Hauppauge, Centereach, Selden, Medford, Patchogue, Shirley\u003c\/p\u003e\n\n\u003cp\u003eContact us today at (631) 779-3196\u003c\/p\u003e","brand":"Installed HVAC Pros","offers":[{"title":"Default Title","offer_id":47905659453691,"sku":"NFB200H","price":9339.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0779\/9406\/6171\/files\/9305459_4678954_primary_f868e3d9-5701-4758-a55d-2b0ce8899e8d.jpg?v=1773766421"},{"product_id":"navien-nfc-h-series-199k-btu-high-efficiency-condensing-combi-boiler-15-1-dhw","title":"Navien NFC-H Series Condensing Combi Boiler 199K BTU 15:1 DHW","description":"\u003cp\u003eThis high-performance wall-hung combi boiler combines domestic hot water (DHW) production with space heating in one compact, high-efficiency unit. It features:\u003c\/p\u003e\n\n\u003cp\u003eA heating input up to approximately 199,900 BTU\/h and DHW input up to ≈ 210,000 BTU\/h.\u003c\/p\u003e\n\n\u003cp\u003e95 % AFUE energy-efficiency rating and ENERGY STAR certified for this combi boiler.\u003c\/p\u003e\n\n\u003cp\u003eHigh turndown ratios (up to 15:1) for both heating and DHW, enabling modulation to match demand and reduce cycling.\u003c\/p\u003e\n\n\u003cp\u003ePatented stainless steel fire-tube heat exchanger (ASME certified “H”-stamped) and separate stainless-steel flat-plate heat exchanger for the DHW portion for durability and performance.\u003c\/p\u003e\n\n\u003cp\u003eBuilt-in DHW module with mixing valve, flow adjustment and three-way valve, integrated boiler pump for heating and DHW — no external pump required.\u003c\/p\u003e\n\n\u003cp\u003eMultiple venting options (2″ up to ~65 ft; 3″ up to ~150 ft) using PVC\/CPVC\/approved polypropylene or stainless steel — enabled by low exhaust temperatures.\u003c\/p\u003e\n\n\u003cp\u003eField-convertible for natural gas (NG) or liquid propane (LP), and certified for high altitude (up to ~10,100 ft) in many cases.\u003c\/p\u003e\n\n\u003cp\u003eCompact footprint — wall-mounted design that saves space compared to traditional floor-standing boilers and separate water heaters.\u003c\/p\u003e\n\n\u003cp\u003eIdeal for both residential and light-commercial applications due to the high output capacity.\u003c\/p\u003e\n\n\u003cp\u003eSummary\u003c\/p\u003e\n\n\u003cp\u003eIn short: the NFC-H series offers a highly efficient, all-in-one solution for space heating and domestic hot water, with advanced modulating performance, compact design, durable construction, and installer-friendly features. This makes it a strong choice for large homes or settings where high hot-water demand and hydronic heating are both required.\u003c\/p\u003e\n\n\u003cp\u003eWe service and install all types of HVAC heating and cooling equipment throughout Long Island, including (but not limited to) this coverage area:\u003c\/p\u003e\n\n\u003cp\u003eNassau County: Oyster Bay, Hempstead, North Hempstead, Glen Cove, Long Beach, Freeport, Valley Stream, Garden City, Great Neck, Mineola, Hicksville, Levittown, Massapequa, Bethpage, Plainview, Syosset, Jericho, Westbury, Rockville Centre, Farmingdale\u003c\/p\u003e\n\n\u003cp\u003eSuffolk County: Huntington, Babylon, Islip, Smithtown, Brookhaven, Riverhead, Shelter Island, Southold, Southampton, East Hampton, Commack, Deer Park, Lindenhurst, Bay Shore, Brentwood, Central Islip, Hauppauge, Centereach, Selden, Medford, Patchogue, Shirley\u003c\/p\u003e\n\n\u003cp\u003eContact us today at (631) 779-3196\u003c\/p\u003e","brand":"Installed HVAC Pros","offers":[{"title":"Default Title","offer_id":47905659617531,"sku":"NFC-250\/200H","price":9889.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0779\/9406\/6171\/files\/Squareproductimages_63.png?v=1769715321"},{"product_id":"navien-nhb-h-series-nhb-h-series-150-mbh-high-efficiency-condensing-heating-combi-boiler","title":"NAVIEN NHB-H Series 150 MBH- High Efficiency Condensing - Combi Boiler","description":"\u003ch2\u003eNAVIEN NHB-H Series 150 MBH - High Efficiency Condensing - Combi Boiler\u003c\/h2\u003e\n\n\u003cp\u003eLooking for reliable heating solutions on Long Island? Our NAVIEN NHB-H Series 150 MBH heating combi boiler is perfect for both residential and commercial applications. With an AFUE of 95%, this high-efficiency combi boiler ensures optimal performance while keeping energy costs low. This unit is designed to provide exceptional heating while minimizing your energy bills, making it a smart investment for any homeowner or business owner.\u003c\/p\u003e\n\n\u003ch3\u003eWhy Choose the NAVIEN NHB-H Series 150 MBH Heating Boiler?\u003c\/h3\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh Efficiency:\u003c\/strong\u003e With an impressive annual fuel utilization efficiency (AFUE) rating of 95%, this combi boiler maximizes heat output while reducing waste.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact Design:\u003c\/strong\u003e The NAVIEN NHB-H is designed to fit seamlessly into your indoor space, with dimensions of 24 inches in height and depth, and 17 inches in width.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVersatile Applications:\u003c\/strong\u003e Suitable for both residential and commercial installations, this boiler can meet the heating demands of your home or business effectively.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnvironmentally Friendly:\u003c\/strong\u003e As a low NOx emission unit, it meets stringent environmental standards, contributing to a cleaner environment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect Vent Capabilities:\u003c\/strong\u003e This feature allows for easy installation in various locations, promoting flexibility in your setup.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eProfessional Installation Available Across Long Island\u003c\/h3\u003e\n\n\u003cp\u003eWe offer professional installation services for the NAVIEN NHB-H Series boiler across Long Island. Whether you're looking for installation in Hempstead, Islip, Smithtown, or any other town, our experienced and licensed installers are ready to assist you. We provide emergency installation and same-day replacement options to ensure you have reliable heating when you need it most.\u003c\/p\u003e\n\n\u003cp\u003eFinancing options are available to make your investment in the NAVIEN NHB-H Series boiler more manageable. Take advantage of our affordable installation services and receive a free estimate to understand your financial commitment upfront.\u003c\/p\u003e\n\n\u003ch3\u003eWhat to Expect from Your NAVIEN NHB-H Series Boiler\u003c\/h3\u003e\n\n\u003cp\u003eWhen you choose the NAVIEN NHB-H Series 150 MBH heating boiler, you're investing in quality and efficiency. Here’s what you can expect:\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003eImproved heating performance for your home or business.\u003c\/li\u003e\n\u003cli\u003eLower energy costs due to high efficiency.\u003c\/li\u003e\n\u003cli\u003eLong-lasting durability with carbon and stainless-steel construction.\u003c\/li\u003e\n\u003cli\u003ePeace of mind with professional installation from trusted local installers.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions (FAQs)\u003c\/h3\u003e\n\n\u003ch4\u003e1. What is the AFUE rating of the NAVIEN NHB-H Series boiler?\u003c\/h4\u003e\n\n\u003cp\u003eThe NAVIEN NHB-H Series boiler has an AFUE rating of 95%, ensuring efficient performance and energy savings.\u003c\/p\u003e\n\n\u003ch4\u003e2. Can I use this boiler for both residential and commercial applications?\u003c\/h4\u003e\n\n\u003cp\u003eYes, the NAVIEN NHB-H Series is designed to cater to both residential and commercial heating needs.\u003c\/p\u003e\n\n\u003ch4\u003e3. What financing options are available for this boiler?\u003c\/h4\u003e\n\n\u003cp\u003eFinancing options are available to help you manage the cost of the NAVIEN NHB-H Series boiler and its installation.\u003c\/p\u003e\n\n\u003ch4\u003e4. Where can I get this boiler installed on Long Island?\u003c\/h4\u003e\n\n\u003cp\u003eOur professional installation services are available across Long Island, including towns like Hempstead, Islip, and Smithtown.\u003c\/p\u003e\n\n\u003cp\u003eWe service and install all types of HVAC heating and cooling equipment throughout Long Island, including (but not limited to) this coverage area:\u003c\/p\u003e\n\n\u003cp\u003eNassau County: Oyster Bay, Hempstead, North Hempstead, Glen Cove, Long Beach, Freeport, Valley Stream, Garden City, Great Neck, Mineola, Hicksville, Levittown, Massapequa, Bethpage, Plainview, Syosset, Jericho, Westbury, Rockville Centre, Farmingdale\u003c\/p\u003e\n\n\u003cp\u003eSuffolk County: Huntington, Babylon, Islip, Smithtown, Brookhaven, Riverhead, Shelter Island, Southold, Southampton, East Hampton, Commack, Deer Park, Lindenhurst, Bay Shore, Brentwood, Central Islip, Hauppauge, Centereach, Selden, Medford, Patchogue, Shirley\u003c\/p\u003e\n\n\u003cp\u003eContact us today at (631) 779-3196\u003c\/p\u003e","brand":"Installed HVAC Pros","offers":[{"title":"Default Title","offer_id":47905758150907,"sku":"NNHB150H","price":9395.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0779\/9406\/6171\/files\/Squareproductimages_62.png?v=1769715228"},{"product_id":"navien-ncb-h-series-high-efficiency-condensing-combi-gas-boiler-130-mbh-15-1-dhw-1","title":"Combi Gas Boiler | NAVIEN NCB-H Series - Condensing - 130 MBH","description":"\u003ch2\u003eNAVIEN NCB-H Series High Efficiency - Condensing - Combi Gas Boiler - 130 MBH - 15:1 DHW\u003c\/h2\u003e\n\n\u003cp\u003eUpgrade your home heating system with the NAVIEN NCB-H Series Combi Gas Boiler, offering high efficiency and reliable performance. This unit is perfect for residential applications, ensuring you stay warm while conserving energy. Designed with advanced technology, the NAVIEN NCB-H Series is a smart choice for homeowners seeking both comfort and efficiency.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features of the NAVIEN NCB-H Series\u003c\/h3\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh Efficiency:\u003c\/strong\u003e With an impressive AFUE rating of 95%, this boiler maximizes energy usage while minimizing waste, lowering your energy bills.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpace-Saving Design:\u003c\/strong\u003e The wall-mount installation option saves valuable floor space in your home.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePowerful Heating:\u003c\/strong\u003e With an input of 130 MBH and a flow rate of 10.4 gpm, enjoy consistent hot water and heating for your residential needs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurable Construction:\u003c\/strong\u003e Made from carbon steel and stainless steel, the NAVIEN NCB-H Series is built to last.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVersatile Fuel Options:\u003c\/strong\u003e This unit can operate on natural gas or propane, making it adaptable to your existing setup.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eElectronic Ignition:\u003c\/strong\u003e The electronic ignition system provides reliable startup every time.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEmergency Installation:\u003c\/strong\u003e We offer emergency installation services for those unexpected situations.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhy Choose Us for Your Installation Needs?\u003c\/h3\u003e\n\n\u003cp\u003eAs a certified and insured installation service, we ensure satisfaction with every project. Our licensed installers are experienced and ready to provide you with a free quote. We understand that upgrading your heating system can be a significant investment, which is why we offer \u003cstrong\u003efinancing available\u003c\/strong\u003e options to make your installation seamless and affordable.\u003c\/p\u003e\n\n\u003ch3\u003eService Areas\u003c\/h3\u003e\n\n\u003cp\u003eWe proudly serve all of Long Island, including:\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003eHempstead\u003c\/li\u003e\n\u003cli\u003eNorth Hempstead\u003c\/li\u003e\n\u003cli\u003eOyster Bay\u003c\/li\u003e\n\u003cli\u003eBabylon\u003c\/li\u003e\n\u003cli\u003eHuntington\u003c\/li\u003e\n\u003cli\u003eIslip\u003c\/li\u003e\n\u003cli\u003eSmithtown\u003c\/li\u003e\n\u003cli\u003eBrookhaven\u003c\/li\u003e\n\u003cli\u003eRiverhead\u003c\/li\u003e\n\u003cli\u003eSouthold\u003c\/li\u003e\n\u003cli\u003eShelter Island\u003c\/li\u003e\n\u003cli\u003eSouthampton\u003c\/li\u003e\n\u003cli\u003eEast Hampton\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eBenefits of Installing the NAVIEN NCB-H Series Boiler\u003c\/h3\u003e\n\n\u003cp\u003eInvesting in the NAVIEN NCB-H Series boiler not only ensures a warm and comfortable home but also contributes to energy savings. The efficiency of this boiler helps reduce your carbon footprint, making it an eco-friendly choice. Additionally, with financing options available, you can enjoy the benefits of a high-performance heating system without breaking the bank.\u003c\/p\u003e\n\n\u003ch3\u003eFAQs about the NAVIEN NCB-H Series Combi Gas Boiler\u003c\/h3\u003e\n\n\u003ch4\u003e1. What are the dimensions of the NAVIEN NCB-H Series Boiler?\u003c\/h4\u003e\n\n\u003cp\u003eThe boiler measures 29-3\/10 inches in height, 17-3\/10 inches in width, and 12-4\/5 inches in depth, making it a compact option for residential installations.\u003c\/p\u003e\n\n\u003ch4\u003e2. What is the warranty on the NAVIEN NCB-H Series?\u003c\/h4\u003e\n\n\u003cp\u003eWarranties may vary, so it’s best to consult with your installer for specific details regarding the warranty for this model.\u003c\/p\u003e\n\n\u003ch4\u003e3. How do I maintain the NAVIEN NCB-H Series Boiler?\u003c\/h4\u003e\n\n\u003cp\u003eRegular maintenance is recommended to ensure optimal performance. Schedule annual check-ups with a certified technician to clean and inspect the unit.\u003c\/p\u003e\n\n\u003ch4\u003e4. What financing options are available for this product?\u003c\/h4\u003e\n\n\u003cp\u003eWe offer various financing options to help homeowners manage the cost of installation. Contact us for more details on our financing plans.\u003c\/p\u003e\n\n\u003cp\u003eOrder now for fast local delivery and installation across Long Island NY. Our trusted installation service is ready to assist you with the NAVIEN NCB-H Series Combi Gas Boiler, ensuring you enjoy the warmth and efficiency your home deserves.\u003c\/p\u003e\n\n\u003cp\u003eWe service and install all types of HVAC heating and cooling equipment throughout Long Island, including (but not limited to) this coverage area:\u003c\/p\u003e\n\n\u003cp\u003eNassau County: Oyster Bay, Hempstead, North Hempstead, Glen Cove, Long Beach, Freeport, Valley Stream, Garden City, Great Neck, Mineola, Hicksville, Levittown, Massapequa, Bethpage, Plainview, Syosset, Jericho, Westbury, Rockville Centre, Farmingdale\u003c\/p\u003e\n\n\u003cp\u003eSuffolk County: Huntington, Babylon, Islip, Smithtown, Brookhaven, Riverhead, Shelter Island, Southold, Southampton, East Hampton, Commack, Deer Park, Lindenhurst, Bay Shore, Brentwood, Central Islip, Hauppauge, Centereach, Selden, Medford, Patchogue, Shirley\u003c\/p\u003e\n\n\u003cp\u003eContact us today at (631) 779-3196\u003c\/p\u003e","brand":"Installed HVAC Pros","offers":[{"title":"Default Title","offer_id":47905758347515,"sku":"NNCB240130H","price":8980.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0779\/9406\/6171\/files\/Square_product_images_91.png?v=1773758003"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0779\/9406\/6171\/collections\/Squareproductimages_62.png?v=1775757232","url":"https:\/\/installedhvacpros.com\/collections\/high-efficiency-natural-gas-combi-boilers.oembed","provider":"Installed HVAC Pros","version":"1.0","type":"link"}