BBB Business Review

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BBB Accredited Business since

Diesel Service & Supply

Additional Locations

Phone: (303) 659-2073 625 Baseline Road, Brighton, CO 80603

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


Diesel Service & Supply has been buying, servicing, and selling new, surplus, and used industrial diesel engines and electric power generators for over 30 years. When you work with us, you will always get a fair price from an industry leader.

BBB Accreditation

A BBB Accredited Business since

BBB has determined that Diesel Service & Supply 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

0 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 0
Problems with Product/Service 0
Total Closed Complaints 0

Customer Reviews Summary Read customer reviews

0 Customer Reviews on Diesel Service & Supply
Customer Experience Total Customer Reviews
Positive Experience 0
Neutral Experience 0
Negative Experience 0
Total Customer Reviews 0

Additional Information

BBB file opened: October 06, 2000 Business started: 01/01/1983 Business started locally: 01/01/1983 Business incorporated 03/31/2011 in CO
Licensing, Bonding or Registration
Many local municipalities, townships and counties have registration, bonding and/or licensing requirements. The BBB encourages you to check with the appropriate agency to be certain any requirements are currently being met.

Permit and license requirements for regulated industries in the State of Colorado can be viewed at the following website:

To view the registration of a business with the Colorado Secretary of State click below:

Type of Entity


Business Management
Mr. Ed Vecchiarelli, Owner Mr. Matt Stencel, Marketing Director
Contact Information
Principal: Mr. Ed Vecchiarelli, Owner
Business Category

Generators - Electric Generators - Maintenance Engines - Diesel

Products & Services

Diesel Service & Supply sells the following brand(s): ASCO, ASCO, Baldor, Baldor, Caterpillar, Caterpillar, Cummins, Cummins, Detroit, Detroit, Generac, Generac, Ingersoll-Rand, Ingersoll-Rand, John Deere , John Deere , Katolight, Katolight, Kohler, Kohler, Magnum, Magnum, MQ Whisperwatt, MQ Whisperwatt, MTU, MTU, Olympian, Olympian, Waukesha, Waukesha

Diesel Service & Supply offers the following product(s): Diesel Generators, Diesel Generators, Enclosures/Containers, Enclosures/Containers, Generator Ends, Generator Ends, Natural Gas Gensets , Natural Gas Gensets , New Generators , New Generators , Portable Generators, Portable Generators, Transfer Switches, Transfer Switches, Used Generators, Used Generators

Refund and Exchange Policy
Our rigorous check-in and inspection program, that all of our equipment undergoes, will provide you with assurance that your generator will work when you need it most. In fact, we guarantee that your generator will start up and work as specified 30 days after the sale or we will personally make any repairs for free.
Service Area
Domestically and Internationally
Alternate Business Names
Generator Source LLLP
Products & Services

We buy and sell all major high performance name brand manufactures, including: Caterpillar, Cummins, Detroit, Kohler, Katolight, Onan, Generac, and more.


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.