4B Systems, Inc.
- Website checked
Update Heating and Cooling Services
Family-owned heating, cooling and electrical contractor in New Lenox, Illinois, installing standby generators and panel upgrades, and repairing furnaces and boilers across Will County and Grundy County.
What they do
Standby generators are the main backup-power work here, including whole-house installs with Generac equipment and the panel upgrades that support them. Estimates for a generator cover the proposed unit, transfer equipment, fuel supply and the loads it would carry. On the heating side the firm handles furnace repair and maintenance, furnace replacement, boiler service and general heating repair. It also offers structural drying. Free estimates are offered on new equipment, and financing is available. The business has operated for over 30 years and is family-owned. It is open around the clock, every day, and its phone line is answered around the clock. Its service area includes New Lenox and nearby communities in Will County and Grundy County.
- Standby generators
- Furnace repairs and installs
- Generator installs
- Boiler service
- Heat pumps
- Ductless mini-splits
Listed under Backup power, Heating and cooling emergencies
Where they work
What we checked
- Its own website lists this work: updateheating.com/home-standby-generators (opens in a new tab), updateheating.com/home-standby-generators (opens in a new tab)
Checked 12 Nov 2026, from public sources.
Not yet verified. We haven’t contacted this business yet. Ask for a written quote before work starts.
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