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Case Studies

Check Out ECI's Case Studies Below!

We think the easiest way to tell you what we do is to show you what we do. Serving the greater Philadelphia area, we've done installations from Old City to Elkins Park, Trenton to Yardley, and have served Delaware Valley homeowners for over thirty years.
 
So, find a home or a neighborhood that looks like yours and see how we helped the homeowner with their home comfort problems. If you don't see your neighborhood or your type of home here, please click here to let us know where you live and we'll see if we have a story near you.
 

 Find a case study based on home construction type

From Tudors to Colonials to split-level homes and more, we've installed heating and air conditioning in all types of single family homes, condos, townhomes and apartments in and around the Philadelphia area.

Click the button below to explore case studies by home construction type:
Singe Family Homes by Construction Type
Or, browse our most recent case studies below:

Oct 9, 2026, 12:32:21 PM by Lea D - 0 comments

Oil-to-Propane Conversion in Doylestown, PA: Cold-Climate Heat Pump with Trane Backup Heat

THE PROBLEM: The customer’s nearly 20-year-old oil-heating system needed repairs estimated at almost $6,000. Rather than make a substantial investment in aging equipment, the customer wanted a long-term heating solution that would improve efficiency and simplify managing separate oil and propane deliveries.

THE SOLUTION: A cold-climate, 24 SEER heat pump paired with a Trane propane furnace replaced the aging oil system. The new dual-fuel configuration combines efficient electric heating and cooling with propane backup heat, allowing the home’s heating system, fireplace, and water heater to share one delivered fuel source.

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