Services
🧾 Trust Card · 2 receipts
- Listed in the AssistAnt 24/7 directoryBusiness record from Overture Maps open business data (CDLA-Permissive-2.0).
- Shown as open for business in the source dataOperating status in the business record.
Not verified yet: Owner has not confirmed this listing yet; License and insurance not reviewed by AssistAnt yet; No AssistAnt job history linked to this listing yet.
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Service area
Map of the Conshohocken, PA area (© Google). Is this your business? Claim it and put up your own photos →
About De Duffey & Sons Inc
De Duffey & Sons Inc is listed on AssistAnt for heating & air conditioning (hvac) in Conshohocken, PA.
Built from public business information. Call to confirm before you go.
Contact
- Phone
- (610) 940-1400
- Website
- deduffey.com
- Location
- Conshohocken, PA, 19428 (service area)
- Booking
- Not bookable online yet. Call the business directly.
Quick facts about De Duffey & Sons Inc
- What is the phone number for De Duffey & Sons Inc?
- (610) 940-1400. You call De Duffey & Sons Inc directly; AssistAnt never sits in the middle.
- Where is De Duffey & Sons Inc?
- De Duffey & Sons Inc serves Conshohocken, PA as a service-area business (no street address shown).
- Is De Duffey & Sons Inc still in business?
- Listed from public business records, last updated September 30, 2026. Call to confirm.
- Is De Duffey & Sons Inc licensed and insured?
- Not verified by AssistAnt yet. Ask for proof of license and insurance before you hire.
- Who else is near Conshohocken?
- AssistAnt lists 597 HVAC companies near Conshohocken. Closest to De Duffey & Sons Inc: Donnelly’s Plumbing, Cooling, Heating & Electric (0.7 mi), A-gas Rapid Recovery - Philadelphia (0.8 mi), Donnelly's Cooling, Heating & Plumbing (0.9 mi).
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Other HVAC companies nearby
- Donnelly’s Plumbing, Cooling, Heating & ElectricPlymouth Meeting, PA · 0.7 mi
- A-gas Rapid Recovery - PhiladelphiaConshohocken, PA · 0.8 mi
- Donnelly's Cooling, Heating & PlumbingPlymouth Meeting, PA · 0.9 mi
- Carl J Wendler Heating And CoolingConshohocken, PA · 1.4 mi
- Petro Home ServicesConshohocken, PA · 1.5 mi
- Superior Plus Energy ServicesConshohocken, PA · 1.5 mi