4B Systems, Inc.
- Website checked
TOPTEC Heating, Cooling, Plumbing & Electrical
Libertyville heating, cooling, plumbing and electrical business serving the Chicago area. It installs generators and panel upgrades, and handles sump pumps, furnaces, heat pumps and air conditioning.
What they do
The company installs generators and panel upgrades for homes and businesses, and it also works on sump pumps, drain cleaning and sewer line repair. Its heating and cooling work covers furnaces, boilers, heat pumps, ductless mini-splits and air conditioning, along with heating repair. It is a Lennox dealer and also works with Mitsubishi equipment. Emergency service is offered around the clock, every day, and financing is available for larger jobs. Founded in 1993 and family-owned, the firm serves Libertyville, Mundelein, Waukegan and Lake Forest, and the wider Chicagoland area.
- Sump pumps
- Generator installs
- Furnace repairs and installs
- Sewer line repair
- Boiler service
- Heat pumps
Listed under Backup power, Basement flooding and sewer backup, Heating and cooling emergencies
Where they work
What we checked
- Its own website lists this work: toptectoday.com/generator-installation (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.
Other backup power pros in Chicago
A-Phase Electric
- Website checked
AUS ELECTRIC LLC
- Website checked
Still choosing the equipment?
Compare prices and specs before you call a pro.