Now’s the time to schedule your fall tune up.

Don’t risk untimely outages on the coldest of days. Call us today to schedule your annual maintenance.

Feel confident knowing that, when the temperatures start dropping, your home will stay warm. With a simple phone call or click, get your fall heating system tune up scheduled today. If you have a current maintenance contract with us, this fall tune up is covered!

Is your heating system ready to call it quits or you’re thinking about installing central air?
Whatever your home comfort needs are, you can rely on our expert technicians to deliver a full range of services, from tune ups and servicing to sales and installation of the latest, high efficiency central air and ductless systems.

Or call us at (610) 940-1400 to schedule your tune-up today.

Reasons to service your heating system:

Reduces utility costs

Improves air quality

Helps prevent untimely breakdowns

Energy efficient

Extends the life of your equipment


Welcome to D.E. Duffey & Sons, your trusted, local, 4th generation total home comfort partner.  Since 1898, suburban Philadelphia home-owners have trusted us to provide fair pricing on home heating oil as well as heating and AC system service, maintenance and installations. After 120 years, we continue to strive to meet the ever-changing needs of the communities we serve through an unwavering commitment to delivering an exceptional level of service for our customers.  This is our promise, it is who we are, and what we do each and every day.  It is what has driven our growth for over a century and it is what will fuel our continued growth in the future.  It is the “Duffey Difference.” To do so, D.E. Duffey offers the best high efficiency heating and cooling systems from Rheem, Fijitsu, Burnham, Lockinvar, Energy Kinetics and more – installed and serviced by the best technicians in the area. 

Noticed your oil level’s running low? Call or email us today to schedule your next delivery.

Having a heating or cooling issue?  Due for your annual tune-up? Contact Duffey’s today.

Become a customer and experience the D.E. Duffey difference today.


D.E. Duffey is happy to meet the heating oil fuel delivery needs of residents of Montgomery County, and select areas of surrounding counties. We offer delivery as well as HVAC maintenance, service, and installation.

CALL US TODAY AT (610) 940-1400


D.E. Duffey & Sons, Inc.
1982 Butler Pike
Conshohocken, PA 19428
Phone: 610-940-1400
Fax: 610-940-1404

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