Lochinvar Boiler Installation in Chicago
Lochinvar is a leading manufacturer of high-efficiency condensing boilers for residential applications. Their KNIGHT and CREST series deliver up to 95% AFUE with modulating burners, making them ideal for Chicago homeowners seeking maximum energy savings.
Why D's Air & Heating, Inc. Installs Lochinvar Boilers
Lochinvar's SMART SYSTEM controls and modulating technology provide precise comfort and fuel efficiency. Their stainless steel heat exchangers resist corrosion and extend service life in Chicago's hard-water conditions.
Lochinvar Boiler
Lochinvar SMART SYSTEM provides advanced diagnostics, remote monitoring, and easy integration with smart thermostats.
Lochinvar Boiler
KNIGHT XL series delivers up to 95% AFUE — significant fuel savings over older atmospheric boilers.
Lochinvar Boiler
Modulates from 20–100% capacity for precise comfort and maximum fuel efficiency.
Lochinvar Boiler
Direct vent with standard PVC pipe — no expensive stainless liner required.
Lochinvar Boiler
Stainless steel heat exchanger resists corrosion in Chicago hard-water conditions.
Lochinvar Boiler
Front-access design makes annual maintenance straightforward for our technicians.
Lochinvar — Available Models
Installed prices include equipment, labor, permits, and startup.
Lochinvar
KNIGHT XL KHN055
Condensing Hot Water
Installed price includes equipment, labor, permits & startup
Lochinvar
KNIGHT XL KHN085
Condensing Hot Water
Installed price includes equipment, labor, permits & startup
Lochinvar
KNIGHT XL KHN110
Condensing Hot Water
Installed price includes equipment, labor, permits & startup
Lochinvar
KNIGHT XL KHN155
Condensing Hot Water
Installed price includes equipment, labor, permits & startup
Lochinvar
CREST CBN399
Condensing Hot Water
Installed price includes equipment, labor, permits & startup
Service Call Policy — D's Air & Heating, Inc.
- The service call fee covers travel and full diagnostics only.
- The service call fee is not deducted from the total cost of any repair or installation.
- After diagnostics, we provide clear repair or replacement options with upfront, itemized pricing.
- Once you approve the Maintenance Agreement, your 15% discount becomes active and is automatically applied to the repair or installation estimate.
- The 15% discount does not apply to the initial service call fee.
A $95.35 Service Call Fee is Required for All Service Appointments, Including Warranty Claims.
Compare All Boiler Brands
See how Lochinvar stacks up against Navien, Weil-McLain, NTI, and other top brands we install.
Boiler Installation & Replacement – Chicago
D's Air & Heating provides complete boiler installation and replacement for Chicago homes, multi-unit buildings, and commercial spaces. Since 2009, we've installed and serviced every major boiler manufacturer, including Weil-McLain (WM), Burnham/U.S. Boiler (BN), Navien (NAV), Lochinvar (LOCH), Pennco (PN), Crown (CR), Green Mountain (GM), Dunkirk (DK), and NTI. Our process includes proper boiler sizing, clean hydronic piping layout, venting verification, circulator placement, zone balancing, gas service checks, and full system startup with safety testing. We install cast-iron gas boilers, oil boilers, high-efficiency condensing boilers, and combi units that provide heat plus domestic hot water. Each project begins with a radiator and baseboard evaluation to ensure even heat distribution and correct system flow. We specialize in replacing outdated boilers with modern high-efficiency systems that reduce energy use and improve comfort. Residential customers benefit from quiet operation, reliable heating, and long equipment life. Commercial clients receive engineered solutions for multi-unit hydronic systems, small commercial buildings, and mixed-use properties. Our star-rated lineup helps customers compare performance: Weil-McLain ★★★★★, Burnham ★★★★☆, Navien ★★★★★, Lochinvar ★★★★★, Pennco ★★★☆☆, Crown ★★★☆☆, Green Mountain ★★★☆☆, Dunkirk ★★★☆☆, NTI ★★★★★. All boiler pages are fully indexed for search, including abbreviations WM, BN, NAV, LOCH, PN, CR, GM, DK, and NTI. Whether upgrading a home boiler or replacing a commercial system, D's Air delivers clean, code-compliant installations built for Chicago's toughest winters.
Residential Boiler Installation – Chicago
High-efficiency residential boilers installed with proper sizing, venting, and piping.
Residential Brand Ratings
- Weil-McLain (WM)★★★★★
- Burnham / U.S. Boiler (BN)★★★★☆
- Navien (NAV)★★★★★
- Lochinvar (LOCH)★★★★★
- Pennco (PN)★★★☆☆
Residential Applications
Chicago homes with radiators, baseboards, multi-zone hydronic systems, and combi setups. Our residential boiler installations cover single-family homes, two-flats, three-flats, greystones, and vintage buildings throughout the Chicago metro area.
Commercial Boiler Installation – Chicago
Light-commercial and multi-unit boiler systems with high-efficiency condensing options.
Commercial Brand Ratings
- Weil-McLain (WM)★★★★★
- Burnham / U.S. Boiler (BN)★★★★☆
- Navien (NAV)★★★★★
- Lochinvar (LOCH)★★★★★
- Dunkirk (DK)★★★☆☆
- NTI★★★★★
Commercial Applications
Multi-unit buildings, small commercial spaces, hydronic zoning, and high-load systems. D's Air & Heating serves apartment buildings, mixed-use properties, small office buildings, and light industrial facilities throughout Chicago and surrounding suburbs.
Boiler Brand Comparison Chart
Compare the top boiler brands D's Air & Heating installs in Chicago — AFUE, type, best use, and star ratings.
| Brand | Rating | Type | AFUE | Best Use |
|---|---|---|---|---|
| Weil-McLain (WM) | ★★★★★ | Cast-Iron / Gas | 82–96% | Radiators, multi-unit, vintage homes |
| Burnham / U.S. Boiler (BN) | ★★★★☆ | Cast-Iron / Gas & Oil | 82–95% | Older homes, oil-to-gas conversions |
| Navien (NAV) | ★★★★★ | Condensing Combi | 95–97% | High-efficiency + domestic hot water |
| Lochinvar (LOCH) | ★★★★★ | Condensing | 95–96% | Large homes, commercial, multi-zone |
| Pennco (PN) | ★★★☆☆ | Cast-Iron / Gas | 83–86% | Budget installs, chimney-vented systems |
| Dunkirk (DK) | ★★★☆☆ | Cast-Iron / Gas | 82–95% | Multi-unit buildings, steam systems |
| NTI | ★★★★★ | Condensing | 95–97% | High-efficiency installs, combi systems |
AFUE ranges reflect full model lineups. Installed prices vary by model, BTU, and site conditions. Call (773) 940-0965 for a free estimate.
Ready to Replace Your Boiler?
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IL License #2183457 · Serving Chicago & Surrounding Areas · No Contracts Required