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SERVING THE GREATER SILICON VALLEY

SINCE 1906

We’ve built our reputation on combining old fashioned values with innovative technology.

SERVING THE GREATER SILICON VALLEY

SINCE 1906

We’ve built our reputation on combining old fashioned values with innovative technology.

O.C. McDonald came to our house and spent 5 hours rebuilding our old 1934 heater that another company said could not be done. It works great!!!!! We really appreciate such super service and cannot say enough about it! I would recommend this company to anyone.” -John E.

24 HOUR EMERGENCY SERVICE

Your emergency is our emergency! When time is not on your side, call O.C. McDonald’s 24-hour live operator and we’ll have one of our many experienced technicians address your issue with speed!

24/7 LIVE OPERATOR:

(408) 295-2182

SERVICE AND REPAIR

We believe in repair before replacement. We also believe in preventative maintenance – saving our customers thousands! Ask about our 10-Point Plumbing Check and our 10-Point Furnace Check.

NEW INSTALLATIONS

With over 100 years experience in heating and cooling, from basic to custom installations, we have the expertise to complete any job.  Our technicians will work with you to find the best options for your needs.

Request an Estimate

Our experienced technicians will help you save money before any work begins. We will let you know exactly what your options are and what it will cost. We like to think of it as a “no surprises approach.” With service like this, it will come as no surprise that O.C.McDonald has been in business for over 100 years.