(314) 631-5892

Request Service | Request a Bid

 Serving St. Louis for over 20 years!  
(314) 631-5892
Go green with Geothermal!


Hoffmann Brothers is the Premiere St Louis Geothermal Heating and Cooling Company. Hoffmann Brothers has been in business for over 20 years. We strive to provide the best service for all of your HVAC needs. We are a full service heating and cooling company specializing in both residential and commercial service and installation. All of our technicians are well trained and licensed.
Some of our qualifications are as follows:
·         Missouri DNR ground source heat pump certified contractor
·         IGSHPA – International Ground Source Heat Pump Association Certified
·         HDPE (high density polyethylene) pipe fusion certified
·         St. Louis City and County licensed pipe fitters
·         GeoComfort factory trained service/installation contractor
Our owner, Robert Hoffmann is a licensed Mechanical Enginerr. He has designed custom heating and air conditioning systems for both residential and commercial customers across the St Louis area for over 20 years.
Of all job applicants, take a test that the owner put together, based on what he thinks his technicians should know, only 1-2% of the applicants pass the test. Because our criteria and expectations are so high, we do one of two things: we hire people with experience and thoroughly check them for proficiency or we send a person through our intense apprentice program.
Hoffmann Brothers supports NATE technician certification. American Standard dealers who employ NATE certified technicians are flagged with the NATE logo within the list. North American Technician Excellence, Inc. (NATE) is the leading certification program for technicians in the heating, ventilation, air-conditioning, and refrigeration (HVAC/R) industry and is the test supported by the entire industry.

Contact the Expert Geothermal Contractors at Hoffmann Brothers

For over 20 years, Hoffmann Brothers has proudly installed and serviced Geothermal and other Energy Efficient heating and cooling systems throughout the St. Louis, Missouri Metropolitan Area. Please give us a call today at (314) 631-5892 or send us an email on our
Our service area includes St. Louis County, Missouri, St. Louis City, Jefferson County, St. Charles County, St. Clair, Illinois, Madison County, Kirkwood, Chesterfield, Des Peres, Wildwood, Ladue, Town and Country, Frontenac, Clayton, Sunset Hills, and Creve Coeur. Hoffmann Brothers is the Premier St. Louis, Missouri Geothermal Heating and Cooling Contractor. Call for your Free Geothermal Heat Pump Energy Audit! Learn more about our qualifications!


Save $20 off any repair.

Contact Hoffmann Brothers for information on tax credits that are available for a Geothermal Heat Pump Installation!

Hoffmann Friends

Hoffmann Brothers Heating & Air Conditioning:

1025 Hanley Industrial
St. Louis, MO 63144
Office: (314) 664-3011
Fax: (314) 256-2716

St Louis Plumbing Contractors
1027 Hanley Industrial
St. Louis, MO 63144
(314) 664-9705

St Louis Water Heater Contractors:
4312  McRee
St. Louis, MO 63110
Office: (314) 664-8574

Hoffmann Brothers St. Louis Mechanical Contractors:
1635 Tower Grove Avenue
St. Louis, MO 63110
Office: (314) 664-3536

St Louis Missouri Workers Compensation

Roskin & Hoffmann
10900 Manchester Rd, STE 213
St. Louis, MO 63122
Office: (314) 821-9013
Fax: (314) 821-4580

The Law Offices of Stephen J. Hoffmann
105 Concord Plaza, Suite 209
St. Louis, MO 63128
Office: (314) 729-0803

Tennessee Geothermal Contractor

Roscoe Brown
959 N Thompson Lane
Murfreesboro, TN 37129
Office: (615) 893-6972




Our Location


Hoffmann Brothers
Geothermal Heating & Cooling Company
4301 Lafayette Ave.
St Louis, MO 63110