D.E. Duffey & Sons

D.E. Duffey & Sons Serving our community for over 120 years! We have experienced a lot in over 120 years, and the past year has presented challenges we never expected.

From home heating oil delivery and installations to heating and air conditioning system maintenance, 24/7 repairs, service contracts & more, we work with our customers, providing consistent and dependable service and fair local prices on heating oil. Since 1898, suburban Philadelphia home-owners have trusted Duffey’s to provide complete comfort solutions for their families. But throughout that tim

e we have continually evolved to meet the ever-changing needs of the communities we serve. We have done this through an unwavering commitment to delivering an exceptional level of service for our customers in everything that we do. 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. While we are extremely proud of our past, Duffey’s remains on the cutting edge of our industry. We offer the latest in high efficiency heating and cooling systems and a team of installation and service professionals that are truly the best around. We believe that this is a perfect combination of past and future and, along with our commitment to the customer experience, positions Duffey’s as the clear choice as your complete comfort partner.

Thanks for trusting us with your HVAC needs! We appreciate your kind words and look forward to serving you again.https:/...
09/03/2026

Thanks for trusting us with your HVAC needs! We appreciate your kind words and look forward to serving you again.

https://deduffey.com/

Small HVAC problems can turn into major repairs if ignored.September is the ideal time to have your heating system inspe...
09/01/2026

Small HVAC problems can turn into major repairs if ignored.
September is the ideal time to have your heating system inspected so you can address issues early and avoid unexpected breakdowns when temperatures drop.

https://deduffey.com/

If your HVAC system is 10–15 years old, this could be the ideal time to consider replacing it before heating season.A ne...
08/25/2026

If your HVAC system is 10–15 years old, this could be the ideal time to consider replacing it before heating season.

A new high-efficiency system can provide:
• Lower utility bills
• Better comfort
• Greater reliability
• Peace of mind

Ask us about your options.

https://deduffey.com/

What's the ideal indoor temperature during the summer?🌡️ 68–70°🌡️ 71–73°🌡️ 74–76°🌡️ 77°+Tell us your answer in the comme...
08/21/2026

What's the ideal indoor temperature during the summer?

🌡️ 68–70°
🌡️ 71–73°
🌡️ 74–76°
🌡️ 77°+

Tell us your answer in the comments!

https://deduffey.com/

We truly appreciate your kind words and your business. Thank you for choosing us to help keep your home comfortable thro...
08/19/2026

We truly appreciate your kind words and your business. Thank you for choosing us to help keep your home comfortable throughout the year.

https://deduffey.com/

Did You Know?The location of your thermostat can affect how your HVAC system performs. If it's placed near direct sunlig...
08/17/2026

Did You Know?
The location of your thermostat can affect how your HVAC system performs. If it's placed near direct sunlight, lamps, or heat-producing appliances, it may read your home's temperature inaccurately and cause your system to run more than necessary.

https://deduffey.com/

08/13/2026

Humidity plays a huge role in how comfortable your home feels. Too much moisture can leave your home feeling sticky, even when the thermostat says you're cool.

https://deduffey.com/

08/07/2026

✔️ Change your air filter
✔️ Clear debris around your outdoor unit
✔️ Check thermostat batteries
✔️ Schedule seasonal maintenance

A few simple steps now can make a big difference later.

https://deduffey.com/

Address

8 N Bacton Hill Rd
Malvern, PA
19355

Opening Hours

Monday 8am - 6pm
Tuesday 8am - 6pm
Wednesday 8am - 6pm
Thursday 8am - 6pm
Friday 9am - 6pm
Sunday 9am - 5pm
6pm - 7pm

Telephone

(610) 940-1400

Website

Alerts

Be the first to know and let us send you an email when D.E. Duffey & Sons posts news and promotions. Your email address will not be used for any other purpose, and you can unsubscribe at any time.

Contact The Business

Send a message to D.E. Duffey & Sons:

Shortcuts

Share

Category