When summer temperatures arrive, your heating system is probably the last thing on your mind. However, the warmer months are one of the best times to inspect your heating oil tank and prepare your home for the next heating season. Checking your tank now gives you...
As temperatures start to rise in Pennsylvania, your air conditioning system is about to work overtime. The last thing you want is for your AC to struggle—or break down—on the first hot day of the year. A quick pre-summer check can help you avoid costly...
A Simple Winter Reminder from D.E. Duffey & Sons When snow hits Delaware County and the Main Line, most homeowners rush to clear the driveway and front steps. But there’s one important area that often gets overlooked: 👉 The pathway to your heating oil fill pipe. If you’re...
A new year is the perfect time for fresh starts—and that includes how you heat and cool your home. As we head into 2026, homeowners across southeastern Pennsylvania are looking for ways to stay comfortable, control energy costs, and make smart, long-term decisions for their...
When it comes to keeping your home comfortable, customers want more than just quality equipment or competitive pricing — they want dependable people who truly care. That’s why customer reviews are so important. They help homeowners across the Greater Philadelphia area discover why D.E. Duffey...
Fall in Pennsylvania can be unpredictable — one week feels like summer, the next week you’re waking up to chilly mornings. These temperature swings make it tough to know when to turn on the heat, open the windows, or do a little of both. The...
As the seasons change and we transition from the warm days of summer to the cooler months of fall, maintaining indoor air quality becomes increasingly important. During this time, many homeowners start to close their windows more frequently and rely heavily on their heating systems...
As the summer heat begins to fade and cooler temperatures start to creep in, now is the perfect time to start thinking about your home’s heating system. Early fall is an ideal time to schedule a heating system tune-up, ensuring your system is in top...
As we head into the peak of summer, heatwaves are becoming more frequent and intense. These extreme weather events can cause significant discomfort and health risks if you're not adequately prepared. At D.E. Duffey, we understand the importance of keeping your home cool and comfortable...
Your HVAC system is crucial for maintaining comfort in your home year-round. However, like any mechanical system, it can develop issues over time. Recognizing the signs that your HVAC system needs repair or replacement can save you from unexpected breakdowns and costly repairs. Here are...