A-1 Guaranteed Heating & Air, Inc. Offers services such as installation, replacement, repair, maintenance, and troubleshooting of furnaces, heat pumps, baseboard heaters, radiators, boilers, and other types of heating.

Alaska Refrigeration Provides repair, replacement, maintenance, installation and sales of residential, commercial, and industrial hvacr and boiler equipment.

Bay Area Smacna Offers legislative assistance, research and Technical standards development, safety, marketing, business management, and industry issues.

Harry Clark Specialized air conditioning, heating and plumbing service company, have expanded the service base to include: sewer repair and replacement, heating and air conditioning service and installation.

Oakland or Fremont Appliance Provides refrigerator repair, range / stove repair, air conditioning repair, dishwasher repair, heating repair, dryer repair, and microwave repair.