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BBB Business Review

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BBB Accredited Business since

Illinois Energy Windows & Siding, Inc.

Phone: (630) 627-9200 Fax: (630) 629-6079 430 Ogden Ave, Lisle, IL 60532 View Additional Email Addresses

BBB Business Reviews may not be reproduced for sales or promotional purposes.


Illinois Energy Windows & Siding, Inc. is a window, door, and siding contractor that specializes in energy saving products. This business is located in Lisle, IL, and serves the western Chicago suburbs including Wheaton, Glen Ellyn, Downers Grove, Lombard, Oak Brook, Westmont, West Chicago, Warrenville, Winfield, La Grange, Hinsdale, Darien, Naperville, Woodridge, Bolingbrook, St. Charles, Oswego, Joliet, Romeoville, Lockport, Orland Park, Cicero, Oak Lawn, Oak Park, and Elmhurst. This company provides windows and doors, gutters and downspouts, insulation contracting, siding contracting, and provide energy saving solutions.

BBB Accreditation

A BBB Accredited Business since

BBB has determined that Illinois Energy Windows & Siding, Inc. meets BBB accreditation standards, which include a commitment to make a good faith effort to resolve any consumer complaints. BBB Accredited Businesses pay a fee for accreditation review/monitoring and for support of BBB services to the public.

BBB accreditation does not mean that the business' products or services have been evaluated or endorsed by BBB, or that BBB has made a determination as to the business' product quality or competency in performing services.

Reason for Rating

BBB rating is based on 13 factors. Get the details about the factors considered.

Customer Complaints Summary Read complaint details

2 complaints closed with BBB in last 3 years | 0 closed in last 12 months
Complaint Type Total Closed Complaints
Advertising/Sales Issues 0
Billing/Collection Issues 0
Delivery Issues 0
Guarantee/Warranty Issues 2
Problems with Product/Service 0
Total Closed Complaints 2

Customer Reviews Summary Read customer reviews

18 Customer Reviews on Illinois Energy Windows & Siding, Inc.
Customer Experience Total Customer Reviews
Positive Experience 17
Neutral Experience 0
Negative Experience 1
Total Customer Reviews 18

Additional Information

BBB file opened: August 24, 1994 Business started: 01/01/1993 in IL Business started locally: 01/01/1993 Business incorporated 02/07/2002 in IL
Type of Entity


Business Management
Mr. David K. Sonner, President Ms. Jeannine Berg, Finance Manager Mr. Brian Campbell, Co owner
Contact Information
Customer Contact: Ms. Jeannine Berg, Finance Manager
Principal: Mr. David K. Sonner, President
Business Category

Windows - Installation & Service Doors Doors - Patio Doors - Installation Doors - Vinyl Windows Windows - Wood Windows - Vinyl Gutters & Downspouts Home Improvements Contractor - Insulation Siding Contractors Finish Carpentry Contractors (NAICS: 238350)

Alternate Business Names
David K. Sonner, Inc.

Customer Review Rating plus BBB Rating Summary

Illinois Energy Windows & Siding, Inc. has received 4.93 out of 5 stars based on 18 Customer Reviews and a BBB Rating of A+.

BBB Customer Review Rating plus BBB Rating Overview

BBB Customer Review Rating plus BBB Rating Overview

BBB Customer Reviews Rating represents the customers opinions of the business. The Customer Review Rating is based on the number of positive, neutral and negative customer reviews posted that are calculated to produce a score.

Customer Review Experience Value
Positive Review 5 points per review
Neutral Review 3 points per review
Negative Review 1 point per review

BBB letter grades represent the BBB's opinion of the business. The BBB grade is based on BBB file information about the business. In some cases, a business' grade may be lowered if the BBB does not have sufficient information about the business despite BBB requests for that information from the business.

BBB Letter Grade Scale

BBB Rating Value
A+ 5
A 4.66
A- 4.33
B+ 4
B 3.66
B- 3.33
C+ 3
C 2.66
C- 2.33
D+ 2
D 1.66
D- 1.33
F 1
NR -----
Star Rating scale

  Average Score
5 stars 5.00
4.5 stars 4.50-4.99
4 stars 4.00-4.49
3.5 stars 3.50-3.99
3 stars 3.00-3.49
2.5 stars 2.50-2.99
2 stars 2.00-2.49
1.5 stars 1.50-1.99
1 star 0-1.49

BBB Customer Review Rating plus BBB Rating is not a guarantee of a business' reliability or performance, and BBB recommends that consumers consider a business' BBB Rating and Customer Review Rating in addition to all other available information about the business. If the BBB Rating is NR then only Customer Reviews are used for the Star Rating.