Welcome to the D.E. Duffey & Sons Web Site. Our company is a full-service heating oil and HVAC contractor located in suburban Philadelphia, PA. We have been keeping families comfortable since 1898 with exceptional service and quality products.
- Heating Oil Services with our 100% never run out guarantee
- Sales & Installation on all makes and models of heating and cooling systems
- Comfort and Energy saving devices such as humidifiers, air purification systems, zone systems and time-controlled temperature systems
- Delaware Valley Fuel Dealer
- NORA
- Better Home Heat Council
- Oil Heat America
- PPMCSA
- PMAA
Online Account Access
Testimonials
We had Duffey's Install a new heating and air conditioning system in our home and we were very pleased with the job.
Steve and Nicole Brandt, NorristownI have come to rely on Duffey's for prompt service. I also appreciate the quality in the service and products you deliver to my home.
Mark Brody, CollegevilleI was very happy with the conversion from hot air to high efficiency hot water heating and multiple air conditioning system which included a high efficiency hot water heater.
Joe Houldin, Chestnut Hill