Thornton Heating Service, Inc.

Name: Thornton Heating Service, Inc.
Address: 19083 WEST CASEY ROAD, Libertyville, IL, 60048, US
Telephone: 847-996-0796
Rating: 5

5.0(1)Libertyville, IL

Generac · Select Dealer

19083 West Casey Road, Libertyville, IL 60048

847-996-0796 THORNTONHEATING.COM Directions

Generac 14kW Whole Home Generator, Transfer Switch & Cellular Capability

Featured · GeneracGenerac 14kW Whole-Home Standby GeneratorLowest price in 30 days$4,799−18%List: ~~$5,839~~Price as of Aug 16, 2026 · the price shown on Amazon at checkout applies.See Current Availability

Independent recommendation from GenDealers, sold on Amazon. Not offered or endorsed by THORNTON HEATING SERVICE, INC. — contact the dealer directly for equipment and installation quotes.

About Thornton Heating Service, Inc.

A Generac Select Dealer offering sales and service.

Services: SalesService
Authorized for: Generac· Select Dealer

Reviews

5.0 · 1 review

jack23#2March 7, 2012
these guys know what there doing!
I had two company's out before I called Thornton Heating Service, the first two company's could not figure out what was wrong with my generator. Called up Thornton, young guy shows up and within 30 min figure out the problem fix it and even corrected some else wrong with.

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Independent recommendations from GenDealers — not sold or endorsed by this dealer.

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Generac 22kW Whole Home Generator, Transfer Switch & Cellular Capability

GeneracGenerac 22kW Whole-Home Standby GeneratorWhole-home coverage for larger houses, with the automatic transfer switch and cellular monitoring in the box.

22 kW
ATS included
NG / LP

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Generac 6485 Scheduled Maintenance Kit for 20kW and 22kW Standby Generators with 999cc Engine Black

GeneracGenerac Maintenance Kit — 20kW & 22kWOil, oil filter, air filter and spark plugs for 999cc Guardian units, in one box.

20–22 kW
999cc engine
Kit 6485

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Generac 6484 Maintenance Kit for 12-18 kW Generators

GeneracGenerac Maintenance Kit — 12kW to 18kWEverything the annual service calls for on 12–18kW Guardian units.

12–18 kW
Kit 6484

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Generac 7101 Battery Heater Pad For 9kW–22kW Air Cooled Standby Generators

GeneracGenerac Battery Heater PadKeeps the starting battery warm so the generator cranks on the coldest night — for 9–22kW air-cooled units.

9–22 kW
Cold-weather
Kit 7101

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Thornton Heating Service, Inc. is listed on GenDealers as an authorized Generac generator dealer in Libertyville, IL, offering sales, service. Customers rate the business 5.0 out of 5 across 1 review. GenDealers is an independent directory; contact the dealer directly for pricing, availability and installation scheduling.