Are you the Owner of this Business? ×
BBB® Accredited Business Seal

Are you...?

If yes, click here to login.

Are you...?

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


TBROS - Trethewey  Brothers, Inc. serves the Greater Boston area for it's customers Plumbing, Heating, Cooling and Remodeling needs.  As a forth generation family business since 1902 we treasure the relationships and hope to allows balance the strength of our past with the new and exciting challenges in the future.

BBB Accreditation

A BBB Accredited Business since

BBB has determined that Trethewey Brothers, 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.

Factors that raised the rating for Trethewey Brothers, Inc. include:

  • Length of time business has been operating
  • Complaint volume filed with BBB for business of this size
  • Response to 1 complaint(s) filed against business
  • Resolution of complaint(s) filed against business

Industry Ratings Comparison | Chart

Customer Complaints Summary Read complaint details

1 complaint closed with BBB in last 3 years | 1 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 1
Total Closed Complaints 1

Customer Reviews Summary Read customer reviews

0 Customer Reviews on Trethewey Brothers, Inc.
Customer Experience Total Customer Reviews
Positive Experience 0
Neutral Experience 0
Negative Experience 0
Total Customer Reviews 0

Additional Information

BBB file opened: November 26, 1986 Business started: 01/01/1902 in MA Business incorporated 12/07/1970 in MA
Licensing, Bonding or Registration

This business is in an industry that may require professional licensing, bonding or registration. BBB encourages you to check with the appropriate agency to be certain any requirements are currently being met.

These agencies may include:

Massachusetts Division of Professional Licensure
1000 Washington Street, Suite 710, Boston MA 02118
Phone Number: (617) 727-3074 or TTY: (617) 727-2099
Fax Number: (617) 727-1944
The number is 11207.

Massachusetts Office of Consumer Affairs & Business Regulation
10 Park Plaza, Boston MA 02116
Phone Number: (617) 973-8787/888-283-3757
Fax Number: (617) 973-8799
The number is 102399.

Type of Entity


Business Management
Mr. Michael Flanagan , Owner- Managing Partner Mr. Robert K. Trethewey, Treasurer
Contact Information
Principal: Mr. Michael Flanagan , Owner- Managing Partner
Principal: Mr. Robert K. Trethewey, Treasurer
Number of Employees


Business Category


Products & Services

Trethewey Brothers, Inc. sells the following brand(s): American Standard, AO Smith Water Heaters, Bryant Heating & Cooling , Burnham, Burnham Boilers, Carrier Heating and Cooling, Gerber , Grohe, Heat Transfer Products, InSinkerator Garbage Disposals, Kohler, Mitsubishi Heating and Cooling Products , Robern, Sterling, Superstor, Taco Controls, The Unico System, Toto, Unico HI Velocity heating and Cooling, Viessmann, Weil McClain, Zoeller Pumps

Trethewey Brothers, Inc. offers the following product(s): Boilers, Dishwashers, Disposal, Gas Fired Boilers, HVAC, Indirect Water heaters, Oil Fired Boilers, Plumbing Fixtures, Sump Pumps, Water heaters

Method(s) of Payment
American Express
Alternate Business Names
Industry Tips
27 Questions For Home Owners Buying a Swimming Pool Finding a Reliable Plumber - 5 Tips - Video Heating Contractor - 5 Tips - Video Heating Contractors Hiring a Plumber Hiring an Air Conditioning Contractor Read Before You Sign Saving Money on Heating & Cooling

Additional Locations

  • 4280 Washington Street

    Roslindale, MA 02131 (800) 325-7586 (617) 325-3283


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.

Complaint Detail(s)

2/12/2016 Problems with Product/Service | Read Complaint Details

Additional Notes

Complaint: I hired them to install my new dishwasher and they failed to install it correctly and refused to come back to even try to make it right. The dishwasher was replacing an old dishwasher and they both had the exact same depth. When they installed the new one, it was sticking out from the cabinets 3 inches and you could actually see the inside of the DW! It was also completely un-level. When I called to complain, the owner (****) was hostile and defensive and said it was due to the configuration of my plumbing and said there was nothing they could do. He said I would have to rip out cabinets to make it right. I called another plumber and it was installed correctly the next day. I took before and after pictures and I would be happy to submit those pictures. My husband called and left a message with no returned phone call. I sent an email requesting a refund with the pictures of the perfectly completed work and they have not responded so I feel forced to contact the BBB.

Desired Settlement: I want a full refund of $156.

Business Response: While Trethewey Brothers does not agree in total with the complaint as written, we did take responsibility for the poor workmanship. We sent the customer a refund check for the total charge on 01/12/2016 and the check was cashed on 01/17/2016. When the customer was told of the refund, I do believe that they said they were going to notify BBB of the outcome.

Customer Review(s)

The customer review(s) below are un-filtered. These positive and negative reviews are not used in the calculation of the BBB Rating. If you wish to file a complaint and request a resolution to your issue please click here. This customer review section is not BBBs complaint resolution system. Customer Reviews are the subjective opinion of the individual who posted the review and not of Better Business Bureau. A customer review is not posted on a business if a BBB complaint on the same issue(s) is also filed. BBB cannot guarantee the accuracy of any customer review and is not responsible for the content of any customer review. Public comments are not customer reviews.

Customer Reviews Summary

0 Customer Reviews on Trethewey Brothers, Inc.
Positive Experience (0 reviews)
Neutral Experience (0 reviews)
Negative Experience (0 reviews)