Boiler Brand Comparison Chart
Weil-McLain, Burnham, Navien, Lochinvar, Crown, Green Mountain, Dunkirk, NTI, and more — compared side by side with installed pricing, efficiency, fuel type, and warranty highlights. D's Air installs every brand.
Side-by-Side Comparison
All installed prices include equipment, labor, permits, and startup. Price confirmed before work begins.
| Brand | Model | Type | BTU | Efficiency | Fuel | Venting | Best For | Warranty | Installed Price | |
|---|---|---|---|---|---|---|---|---|---|---|
| Weil-McLain | WM97+ 110 | Condensing Hot-Water | 110,000 BTU | 96% AFUE | Natural Gas / Propane | Direct Vent / PVC | High-efficiency retrofit, multi-zone homes | Limited heat exchanger + parts | $8,750 | Details |
| Weil-McLain | GSA-282 | Thermoelectric Steam | 282,000 BTU Input | 82% AFUE | Natural Gas | Category I / B-Vent | Chicago two-flats, greystones, vintage steam systems | Limited heat exchanger + parts | $13,795 | Details |
| Burnham / U.S. Boiler | ES2-3 | Cast-Iron Hot-Water | 105,000 BTU | 84% AFUE | Natural Gas / Oil | Chimney / B-Vent | Older homes, oil-to-gas upgrades, vintage radiator systems | Limited heat exchanger + parts | $7,200 | Details |
| Burnham / U.S. Boiler | Alpine ALP150 | Condensing Hot-Water | 150,000 BTU | 95% AFUE | Natural Gas / Propane | Direct Vent / PVC | High-efficiency retrofit, multi-zone, radiant floor | Limited heat exchanger + parts | $9,450 | Details |
| Navien | NCB-240E | Condensing Combi | 240,000 BTU | 95% AFUE | Natural Gas / Propane | Direct Vent / PVC | Larger homes, high DHW demand, multi-zone | Extended heat exchanger coverage | $11,450 | Details |
| Navien | NHB-150 | Condensing Hot-Water | 150,000 BTU | 95% AFUE | Natural Gas / Propane | Direct Vent / PVC | Medium to large homes, multi-zone hydronic | Extended heat exchanger coverage | $9,200 | Details |
| Lochinvar | KNIGHT KHB199 | Condensing Hot-Water | 199,000 BTU | 95% AFUE | Natural Gas / Propane | Direct Vent / PVC | Larger homes, light commercial, multi-zone hydronic | Limited heat exchanger + controls | $10,200 | Details |
| Green Mountain | GMGS-299 | Cast-Iron Steam | 299,000 BTU Input | 82% AFUE | Natural Gas | Category I / B-Vent | Premium steam systems, Chicago vintage housing | Limited heat exchanger + parts | $13,350 | Details |
| Crown | BSI-276-ENP | Cast-Iron Steam | 276,000 BTU Input | 82% AFUE | Natural Gas | Category I / B-Vent | Chicago two-flats, greystones, auto water feeder included | Limited heat exchanger + parts | $13,750 | Details |
| Crown | PHNTM-80 | Condensing Hot-Water | 80,000 BTU | 95% AFUE | Natural Gas / Propane | Direct Vent / PVC | High-efficiency retrofits, tight spaces | Limited heat exchanger + parts | $7,950 | Details |
| Dunkirk | Royal CO | Condensing Combi | Modulating | Up to 95.2% AFUE | Natural Gas | Direct Vent / PVC | Heat + domestic hot water in one compact wall-hung unit | Limited heat exchanger + parts | $14,995 | Details |
| Dunkirk | WPSB Series 4 | Cast-Iron Hot Water | Multiple Sizes | 84.1% AFUE | Natural Gas | Category I / B-Vent | Chicago vintage homes with hot water radiator or baseboard systems | Limited heat exchanger + parts | $14,995 | Details |
| NTI | TRX 150 | Condensing Hot-Water | 150,000 BTU | 95% AFUE | Natural Gas / Propane | Direct Vent / PVC | Larger homes, radiant floor, multi-zone | 10-yr stainless steel heat exchanger | $9,750 | Details |
| NTI | TFT 199 | Condensing Combi | 199,000 BTU | 95% AFUE | Natural Gas / Propane | Direct Vent / PVC | Larger homes, high DHW demand, multi-zone combi | 10-yr stainless steel heat exchanger | $11,950 | Details |
| Pennco | 15B-060K | Cast-Iron Hot-Water | 59,000 BTU | 84% AFUE | Natural Gas | Chimney / B-Vent | Budget replacement, small apartments, single-zone | Limited heat exchanger + parts | $6,800 | Details |
| Pennco | 15B-095K | Cast-Iron Hot-Water | 92,500 BTU | 84% AFUE | Natural Gas | Chimney / B-Vent | Budget replacement, medium homes, multi-radiator | Limited heat exchanger + parts | $6,869 | Details |
| Pennco | 15B-150K | Cast-Iron Hot-Water | 149,000 BTU | 84% AFUE | Natural Gas | Chimney / B-Vent | Budget replacement, medium-large homes, heavy radiator loads | Limited heat exchanger + parts | $7,588 | Details |
| Pennco | 15B-235K | Cast-Iron Hot-Water | 235,000 BTU | 84% AFUE | Natural Gas | Chimney / B-Vent | Budget high-capacity, multi-family, large radiator systems | Limited heat exchanger + parts | $9,484 | Details |
Weil-McLain
WM97+ 110
Condensing Hot-Water
Weil-McLain
GSA-282
Thermoelectric Steam
Burnham / U.S. Boiler
ES2-3
Cast-Iron Hot-Water
Burnham / U.S. Boiler
Alpine ALP150
Condensing Hot-Water
Navien
NCB-240E
Condensing Combi
Navien
NHB-150
Condensing Hot-Water
Lochinvar
KNIGHT KHB199
Condensing Hot-Water
Green Mountain
GMGS-299
Cast-Iron Steam
Crown
BSI-276-ENP
Cast-Iron Steam
Crown
PHNTM-80
Condensing Hot-Water
Dunkirk
Royal CO
Condensing Combi
Dunkirk
WPSB Series 4
Cast-Iron Hot Water
NTI
TRX 150
Condensing Hot-Water
NTI
TFT 199
Condensing Combi
Pennco
15B-060K
Cast-Iron Hot-Water
Pennco
15B-095K
Cast-Iron Hot-Water
Pennco
15B-150K
Cast-Iron Hot-Water
Pennco
15B-235K
Cast-Iron Hot-Water
How to Choose the Right Boiler
Not sure which brand is right for your home? Here is a quick guide based on your situation.
You have a steam system (radiators)
Weil-McLain GSA-282, Green Mountain GMGS-299, or Crown BSI-276-ENP. All three are purpose-built for Chicago vintage steam systems.
You want maximum efficiency
Navien NCB or NHB series (up to 97% AFUE), NTI TRX series (95% AFUE), Lochinvar KNIGHT (95% AFUE), or Weil-McLain WM97+ (96% AFUE). All use PVC venting.
You want heat + hot water in one unit
Navien NCB combi-boiler, Dunkirk Royal CO combi, or NTI TFT combi. Eliminates the need for a separate water heater.
You have a large two-flat or multi-unit
Weil-McLain LGB commercial, Lochinvar CREST, or Dunkirk D250 Commercial. D's Air sizes every system to your building.
You have an older home or oil system
Burnham ES2 cast-iron handles oil-to-gas conversions and older radiator systems. American-made since 1873 with proven reliability.
You want American-made
Weil-McLain (USA), Crown Boiler (USA), Dunkirk (USA), and Burnham / U.S. Boiler (USA) are all manufactured domestically.
You want advanced controls & multi-zone
Lochinvar KNIGHT with SMART SYSTEM controls offers 5:1 modulation and full BAS integration — ideal for larger homes and light commercial.
You want the best warranty
NTI offers a 10-year stainless steel heat exchanger warranty. Weil-McLain and Navien offer up to 10 years on select models.
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.
Not Sure Which Boiler Is Right for You?
D's Air & Heating, Inc. will assess your home, recommend the right system, and give you an upfront installed price — no contracts, no surprises. IL License #2183457.
Why Chicago Homeowners Trust D's Air & Heating
Licensed & Insured
IL License #2183457
Serving Chicago
Since 2009
Authorized Dealer
Multiple Brands
No Contracts
Ever — Guaranteed
Permit Pulled
Every Installation
Professional Standards
Code-Compliant Work
EPA Certified
Mainstream Engineering
R-410A Certified
Mainstream Engineering
Why Choose D's Air & Heating, Inc.?
Chicago's trusted HVAC company since 2009 — licensed, insured, and committed to honest workmanship on every job.
Experience Since 2009
D's Air & Heating has served Chicago homeowners and businesses since 2009. Over 15 years of local HVAC experience means we've seen every type of system, every Chicago building configuration, and every challenge the city's climate presents.
Manufacturer-Trained Technicians
Our technicians receive ongoing manufacturer training and certification. We install Lennox, Goodman, Amana, Daikin, Sinclair, Weil-McLain, Peerless, and other leading brands — and we know each system inside and out.
Licensed, Insured & Permitted
D's Air & Heating holds Illinois HVAC License #2183457 and carries full liability insurance. We pull City of Chicago permits on every installation — protecting you legally and ensuring the work meets code.
Honest Recommendations
We tell you what you need — not what generates the highest invoice. If your system can be repaired cost-effectively, we'll say so. If replacement makes more sense, we'll explain exactly why. No pressure, no upselling.
Local Chicago Expertise
We know Chicago's housing stock — two-flats, greystones, bungalows, vintage buildings with steam heat, modern construction with forced air. We size and install equipment for the specific demands of Chicago homes and Chicago winters.
Long-Term Customer Support
Our relationship doesn't end at installation. We register your equipment for warranty, remain available for follow-up questions, and provide ongoing maintenance to keep your system running at peak efficiency for years.
What Chicago Homeowners Should Know About Boiler Installation
How a Hot Water Boiler Works
A hot water (hydronic) boiler heats water and circulates it through pipes to radiators, baseboard convectors, or radiant floor tubing. The water returns to the boiler, is reheated, and recirculates. Modern condensing boilers achieve 90%+ efficiency by recovering heat from exhaust gases that older boilers waste.
Steam vs. Hot Water Boilers
Steam boilers — common in Chicago's older two-flats and greystones — heat water until it becomes steam, which rises naturally through pipes to cast-iron radiators. They require no circulator pump but need precise water level control. Hot water systems are quieter, more efficient, and easier to zone. D's Air installs and services both.
Boiler Sizing and Near-Boiler Piping
Correct boiler sizing requires calculating the heat loss of every room in the building. Oversized boilers short-cycle and cause water hammer in steam systems. Proper near-boiler piping — header design, equalizer pipe, Hartford Loop for steam — is as important as the boiler itself. D's Air follows manufacturer piping diagrams and ASHRAE guidelines on every installation.
Combustion Safety and Venting
Every boiler installation requires proper combustion air supply and flue venting. Inadequate combustion air causes incomplete combustion and carbon monoxide production. Improper venting allows flue gases to back-draft into the living space. D's Air verifies combustion air, draft, and CO levels on every installation.
What to Expect From Your D's Air Boiler Installation
Free Estimate
We inspect your existing system, measure your building, and provide a written quote covering equipment, labor, and permits.
Equipment Selection
We recommend the right boiler type (steam, hot water, condensing, combi) and brand for your building and budget.
Installation Day
Our crew protects your space, removes the old boiler, installs the new system with proper piping, and cleans up completely.
Startup & Testing
We fill the system, purge air, test all safety controls, verify gas pressure, and confirm proper heat distribution.
Customer Training
We explain your new boiler's controls, how to check the water level (steam systems), and what maintenance is needed.
Warranty Support
We register your equipment and remain available for follow-up service and annual maintenance.
D's Air Installation Standards — Every Boiler Job
- Heat loss calculation and proper boiler sizing
- Near-boiler piping per manufacturer specifications
- Hartford Loop installation on all steam systems
- Backflow preventer and expansion tank on all hot water systems
- Gas line pressure test and leak check at all connections
- Flue venting verification — draft, clearances, and termination
- Low-water cutoff test and safety control verification
- Combustion analysis and CO test after startup
- City of Chicago permit pulled on every installation
- Equipment registered for full manufacturer warranty
What Our Customers Say
Based on Google Reviews — D's Air & Heating, Inc.
Marcus T.
Furnace Replacement
"D's Air & Heating did an outstanding job replacing my furnace. Darryl was professional, on time, and explained everything clearly. The installation was clean and the system works perfectly. Highly recommend."
Latoya W.
Boiler Repair
"Called D's Air when my boiler stopped working in January. They came out the same day, diagnosed the problem quickly, and had it running again within hours. Fair pricing and excellent service."
James R.
AC Installation
"Installed a new central AC system for us this summer. The crew was respectful of our home, cleaned up after themselves, and the system runs quietly and efficiently. Very satisfied."
Ready to Work With Chicago's Trusted HVAC Company?
D's Air & Heating, Inc. — Serving Chicago Since 2009. Licensed, Insured, No Contracts.