Weil-McLain ECO Tec® Series 3 Combi Boiler Installation Chicago
Weil-McLain · Chicago Installation
ECO Tec® Series 3 Combi
95% AFUE condensing combi boiler — space heating and domestic hot water in one wall-hung unit.
Why D's Air & Heating, Inc. Recommends ECO Tec® Series 3 Combi
95% AFUE Condensing
The ECO Tec Series 3 Combi reaches 95% AFUE — top-tier condensing efficiency for combined space heating and domestic hot water.
Combi: Heat + Hot Water
Provides both space heating and on-demand domestic hot water from a single wall-hung unit — no separate water heater needed.
Direct Vent / PVC
Sealed combustion with PVC venting for safe, flexible installation in Chicago homes and two-flats.
Stainless Heat Exchanger
Built for condensing operation with a stainless steel heat exchanger for long-term durability.
Wall-Hung Compact
Mounts on the wall to free up floor space — ideal for Chicago homes with tight mechanical rooms.
Weil-McLain Warranty
Backed by Weil-McLain's limited warranty. D's Air & Heating, Inc. registers at startup.
The Weil-McLain ECO Tec® Series 3 Combi is a condensing gas boiler delivering 95% AFUE with the added benefit of on-demand domestic hot water — all in a single wall-hung unit. It's the upgrade choice for Chicago homeowners who want to eliminate a separate water heater while maximizing heating efficiency.
The Series 3 Combi is particularly popular in Chicago two-flats and greystones where mechanical room space is limited. Combining space heating and domestic hot water in one compact wall-hung unit simplifies the mechanical room and reduces installation cost compared to running two separate systems.
D's Air & Heating, Inc. installs the ECO Tec Series 3 Combi throughout Chicago and the southwest suburbs. We handle all City of Chicago mechanical permits, piping, controls, and startup — and register your Weil-McLain warranty before we leave.
ECO Tec® Series 3 Combi — Installed Pricing
*Local taxes may apply. Financing available. Prices shown are D's Air & Heating, Inc. approved pricing.
Pricing Coming Soon
We're finalizing our approved installed pricing for this series. Call (773) 940-0965 or book online for a same-day quote.
ECO Tec® Series 3 Combi
combi
*Local taxes may apply. Financing available on approved credit.
Our Installation Process
- 1
Free On-Site Estimate
We assess your existing system, measure your space, and recommend the right Weil-McLain model for your home.
- 2
Permit & Scheduling
D's Air & Heating, Inc. pulls all required City of Chicago mechanical permits before work begins.
- 3
Professional Installation
Our licensed technicians install your new boiler to manufacturer specs, including all piping, controls, and venting.
- 4
Startup & Testing
We fire up the system, verify all zones, check for leaks, and confirm proper operation before we leave.
- 5
Warranty Registration
We register your Weil-McLain warranty and leave you with all documentation.
Weil-McLain Warranty Coverage
- Up to 10-year limited heat exchanger warranty on select condensing models
- 3-year limited parts warranty on most residential models
- 1-year labor warranty from D's Air & Heating, Inc.
- Warranty valid only with professional installation by a licensed contractor
Financing Available
Don't let upfront cost stop you from getting the right boiler. Ask about our flexible financing options on approved credit.
Book a Free EstimateWeil-McLain Boiler Installation & Service Experts
D's Air & Heating proudly provides professional Weil-McLain boiler installation, replacement, repair, maintenance, and emergency service throughout Chicago and surrounding communities. Weil-McLain is recognized as one of the most trusted names in the boiler industry, delivering reliable heating solutions for residential, commercial, steam, and hot water applications.
Our experienced boiler technicians install and service a wide range of Weil-McLain equipment, including high-efficiency condensing boilers, cast iron hot water boilers, commercial heating systems, and steam boiler applications. Whether you need a new Weil-McLain boiler installation Chicago homeowners and businesses rely on, complete boiler replacement, annual maintenance, or emergency repair service, D's Air & Heating has the expertise to keep your heating system operating safely and efficiently.
We help customers select the right Weil-McLain boiler based on building requirements, heating loads, efficiency goals, and budget considerations while ensuring every installation meets manufacturer specifications and local code requirements.
From residential heating systems to large commercial boiler projects, D's Air & Heating delivers quality workmanship, expert system design, and dependable customer support backed by industry-leading Weil-McLain technology and warranty protection. Our Weil-McLain boiler repair Chicago customers trust us for fast diagnostics, genuine parts, and lasting fixes.
Contact D's Air & Heating today at (773) 940-0965 to schedule your free estimate for Weil-McLain boiler installation, replacement, maintenance, or repair services.
Ready to Replace Your Boiler?
D's Air & Heating, Inc. installs Weil-McLain boilers throughout Chicago and the southwest suburbs. Call now or book online.