Weil-McLain WGO® Series 4 Oil Hot Water Boiler Installation Chicago
Weil-McLain · Chicago Installation
WGO® Series 4 Oil Hot Water
86% AFUE oil-fired hot-water boiler — reliable hydronic heating replacement for Chicago homes.
Why D's Air & Heating, Inc. Recommends WGO® Series 4 Oil Hot Water
86% AFUE Oil Hot Water
The WGO Series 4 is Weil-McLain's oil-fired hot-water boiler — the correct replacement for Chicago homes with baseboard and radiator hydronic systems running on oil.
Large Capacity Range
Available from 105,000 to 420,000 BTU/hr — handles large Chicago homes and multi-unit buildings.
Category I Venting
Uses Category I venting compatible with existing oil boiler flue configurations in Chicago homes.
Cast-Iron Reliability
Weil-McLain's cast-iron heat exchanger is built for long-term reliability in hydronic heating systems.
Hydronic Compatible
Works with baseboard, cast-iron radiators, and radiant floor systems throughout Chicago.
Weil-McLain Warranty
Backed by Weil-McLain's limited warranty. D's Air & Heating, Inc. registers at startup.
The Weil-McLain WGO® Series 4 is an oil-fired hot-water boiler delivering 86% AFUE. It's the correct replacement for Chicago homes with baseboard and radiator hydronic systems running on oil — available in sizes from 105,000 to 420,000 BTU/hr.
The WGO Series 4 uses Category I venting and is compatible with the full range of Chicago hydronic heating configurations. Its cast-iron heat exchanger is built for decades of reliable service. For homeowners who also want domestic hot water from the boiler, the WTGO adds a tankless coil.
D's Air & Heating, Inc. installs the WGO Series 4 throughout Chicago and the southwest suburbs. We handle all City of Chicago mechanical permits, oil burner setup, piping, controls, and startup — and register your Weil-McLain warranty before we leave.
WGO® Series 4 Oil Hot Water — 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.
WGO® Series 4 Oil Hot Water
oil hot water
*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.