As winter comes to an end and temperatures begin to rise, it’s time for homeowners to shift from heating their homes to preparing for warmer weather. This seasonal transition is the perfect opportunity to make sure your HVAC system is operating efficiently and ready for...
This winter has delivered more than just typical cold weather. During the 2026 heating season, meteorologists have tracked polar vortex activity pushing Arctic air farther south, resulting in prolonged cold snaps, winter storms, and increased demand on home heating systems throughout our region. For homeowners, polar...
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...
If your air conditioner isn’t cooling like it used to, the issue might be refrigerant-related. But what is refrigerant—and why is it so essential to your comfort? What Is Refrigerant? Refrigerant is the chemical compound inside your air conditioning system that makes cooling possible. It absorbs heat...
If your air conditioning system isn’t keeping up—or you're facing rising repair bills—it may be time to evaluate your options. At D.E. Duffey & Sons, we make it easy. Our in-home consultations are straightforward, informative, and tailored to your home and budget. Here’s what to expect...
As the days get longer and temperatures start to rise, now is the perfect time to ensure your air conditioning system is ready for the warm months ahead. A professional AC tune-up can improve efficiency, prevent unexpected breakdowns, and keep your home cool and comfortable...
As winter settles in, maintaining a warm and comfortable home becomes more important than ever. Unfortunately, unexpected heating issues can disrupt that comfort just when you need it most. At D.E. Duffey, we know that heating emergencies don’t follow regular business hours, which is why...
As winter approaches, it’s essential to ensure your home heating system is ready to keep you comfortable and efficient. For many homeowners, choosing between an oil furnace and a gas furnace can be challenging. Both types of furnaces offer unique benefits, and the best choice...