Duffey & Sons, your trusted, local, 4th generation home comfort partner. Since 1898, suburban Philadelphia home-owners have trusted us to provide complete heating and cooling solutions for their families. We have experienced a lot in nearly 120 years, as have our loyal customers, but throughout that time we have strived 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.

Have you considered installing an energy-efficient heat pump system to maximize your energy savings? Heat pumps are a smart, efficient and versatile alternative to heating or cooling your home in mild to moderate climates. In colder climates they can also be used in conjunction with your heating oil or gas fueled primary heating system oil to further maximize your savings. Schedule a complimentary consultation and one of our Complete Comfort Specialists to see if a heat pump is the right solution for your home.

DId you know that heating and cooling your home accounts for nearly half of all your home's energy use? Let Duffeys show you how to achieve total home comfort while at the same time reducing the overall energy you use. With almost 120 years of experience behind us, we've seen some of the harshest weather conditions on record, and Duffeys is here to help you stay warm and cozy in the worst of winters and cool and comfortable in the hottest of summers. And we help our friends and neighbors achieve-and maintain-total home comfort on the inside no matter what Mother Nature has in store on the outside.

Hot water is something that is often taken for granted. That is until there isn't any. Yet another example of Duffey's commitment to providing Complete Comfort is the ability to service our customer's hot water needs. We proudly sell, install and service high-tech, high-efficiency hot water heaters by household names such as Rheem, Rinnai, Navian, Bradford White and A.O. Smith. Duffeys offers a full range of water heaters - from basic to super high-efficiency (up to 96% thermal efficiency). From space saving wall-hung units, to indirect hot water heaters for those customers who have a higher demand for domestic hot water, but still want the most efficient system possible.

For homes with ductwork or the space to install ductwork, there is no substitute for the complete comfort of a central air conditioning system. D.E. Duffey & Sons offers several kinds of central air conditioners, from small-duct high-velocity systems, to variable speed systems. Different systems can perform better in some houses than others so it's important to know which systems are applicable. Our certified Complete Comfort specialists can "Right-Size" your home and recommend the Central Air system that will combine the highest level of efficiency and savings, bringing you years of comfort.

Boilers are one of the most common ways that homes are heated, and when installed and serviced correctly, provide a consistent level of comfort. Duffeys will only install the very best equipment for our customers, and as such, recommend ENERGY STAR-rated boilers from leading suppliers such as Burnham, Lochinvar, Peerless and Weil-McClain. These boilers are renowned for energy conservation and peak efficiency while providing best-in-class comfort. This increased efficiency reduces the amount of energy used, saving customers significant money over time.

It is a common misconception that the only time for new heating equipment is when the existing unit(s) stops working and can no longer be repaired. While this is the obvious time for new equipment, replacing an aging system before it breaks down can offer numerous benefits and savings. Many people spend hundreds, sometimes thousands of dollars trying to repair old equipment. This money, in addition to the money needlessly spent on excess energy used by an inefficient system, would have gone a long way towards the purchase of a brand new unit.

Many people think that when it comes to cooling their home, they are limited to two options; Central air conditioning, which requires the space and accessibility to allow for extensive duct work, or old style window units. Well, until fairly recently they would have been right. Now however, there are multiple options for customers who want to be cool and comfortable in the warmer months including ductless mini split systems. Already have Central Air Conditioning? As with heating systems, the proactive replacement of aging Air Conditioning equipment can offer incredible savings.

Duffeys is proud to offer a wide range of high-efficiency oil and gas-fired furnaces. We install, service and maintain equipment by all industry leading manufacturers, including brands like Rheem and Ruud. Today's high-efficiency furnaces are designed to conserve energy while providing a maximum level of comfort. As a result, your home will be more comfortable than ever before while using less energy. More comfort for less money, that's our goal. A standard component of a new furnace installation with Duffeys is a complimentary inspection of the existing ductwork.

No duct work No problem! No longer does a lack of ductwork mean a lack of comfort. A ductless system from Duffeys is perfect for those who are looking to experience the comfort of central air without the eyesore that comes with a window unit. Environmentally friendly, and extremely efficient, ductless systems are perfect for cooling just a single room or an entire home. So, if you're interested in energy-efficient air conditioning that can be integrated seamlessly into virtually any floor plan, Duffeys is ready to help.

Duffey has been responsible for our interior comfort over many years. We have always had prompt oil deliveries and service, not only for our heaters, .

DE Duffy were simply the best! Much better service than other and pricing than any competitor.

We started using Duffey this past year. We have called twice for emergency service for our heater and each time they have been at our door within 30.

What's new?

Book by March 15! Only a week left to save up to $500 on a new AC system from D.E. Duffey. Trust us to stay cool and comfortable this summer. Call today for a free estimate. (610)940-1400.

Posted on Mar 08, 2021  •  Facebook

“Nothing can stop the man with the right mental attitude from achieving his goal...” ~ Thomas Jefferson

Posted on Feb 15, 2021  •  Facebook

May your homes be full of hearts and heat this Valentine's Day.

Posted on Feb 14, 2021  •  Facebook

"Prompt, professional and affordable, A family company that has not outgrown small town courtesy." Thank you DeWayne Connot!

Posted on Feb 01, 2021  •  Facebook

Sub-freezing temperatures mean one thing; Our team works around the clock to keep our customers warm. With dangerously low temperatures predicted overnight, here are a few things to keep in mind:

Posted on Jan 28, 2021  •  Facebook

Kate Duffey represented D.E. Duffey last week at the Rheem Pro Partner Conference in Orlando. It was a great confe… https://t.co/pc4ReFr7T8

Posted on Apr 02, 2019  •  Twitter

Check out these pictures of our old trucks on this #ThrowbackThursday #TBT

Posted on Feb 07, 2019  •  Twitter

Our installation team is second to none! Their passion for exceeding customer's expectations shows through their sk… https://t.co/iLjdBbvi18

Posted on Feb 06, 2019  •  Twitter

Happy Groundhog Day! https://t.co/meiOtxA2sa

Posted on Feb 02, 2019  •  Twitter

Thank you to our amazing team for your commitment to Duffey’s and our customers!! Let’s do it again today! https://t.co/ILYUzzjhN2

Posted on Feb 01, 2019  •  Twitter

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