The Real McCoy
Heating & Air Conditioning, Inc.

104 E. McKnight Way
Grass Valley, CA 95945
(530) 265-0807 Office


Seth McCoy
President/Project Manager
(530) 559-2882 Cell

Contractors Lic. #912066




About Our Company

What Makes Us Different

Examining plans for Air Conditioning system.

I started my own business in 1993.  In 1994 I got into a PG&E rebate program.  PG&E offered a lot of training and through this training I learned about the need to seal and test duct systems, I also learned about airflow and static pressure and eventually began to build much better, tighter, and more efficient heating & A/C systems. 

I was one of the first in the county to build sealed duct systems and test them with the appropriate equipment.

My customers were happy because my systems were efficient, they were comfortable with their systems and their energy bills were reasonable.  I began to get recognition from architects, engineers, general contractors, and county & city building officials.  I kept the business small for one reason; I wanted to be on each job so that I could keep the quality high and continue to deliver the kind of job that I was known for.

Seth came to work for me in 2004 and I was very pleased to find that he wanted to do exactly the same standard of work that I did.  We formed a partnership in late 2007 and began business as McCoy & Bielenberg on Jan 1, 2008.

You will find that a McCoy & Bielenberg heating and/or air conditioning system will be the best investment you can make for your family’s health and comfort.

We are here to help.  Call today to find out what you have been missing.  (530) 265-0807 and see what a difference a professionally installed system can make in your comfort and your utility bill.


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About Our Company

Meet Seth McCoy

Contact Us:

OFFICE (530) 265-0807

Seth Cell (530) 559-2882


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Areas We Serve:

  • Cedar Ridge
  • Chicago Park
  • Grass Valley
  • Lake of the Pines
  • Lake Wildwood
  • Nevada City
  • North San Juan
  • Pearldale
  • Penn Valley
  • Rough & Ready

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