(908) 995-4825  
760 Frenchtown Road, PO Box 619, Milford, NJ 08848-0619
JD Stem, Master HVACR Contractor Lic. #4246 • PA HIC #PA032216

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Fill out this quick contact form to get in touch with Stem Brothers. Need something more specific? Get in touch with us on our general contact form here.

NOTE: If you are having a heat emergency, please call the office immediately. Do not use e-mail to alert us to an emergency. Thank you!











  Service Area


Stem Brothers serves Hunterdon and Warren counties in New Jersey and Bucks County in Pennsylvania. Here is a list of the cities and towns where our services are available. 

Hunterdon & Warren Counties, New Jersey

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Alexandria, Alpha, Annandale, Asbury, Baptistown, Bethlehem Twp., Bloomsbury, Byram, Carpentersville, Clinton, Delaware Twp., Flemington, Frenchtown, Glen Gardner, Hampton, Holland Twp., Kingwood Twp., Lebanon, Little York, Milford, Phillipsburg, Pittstown, Quakertown, Ringoes, Rosemont, Sergeantsville, Stewartsville, and Stockton. 

Bucks County, Pennsylvania

Springtown, Erwinna, Ottsville, Pipersville, Pt. Pleasant, Ferndale, Revere, Upper Black Eddy, Kintnersville, New Hope, Riegelsville, Durham and Pleasant Valley.