What is the phone number for Interstate Service Company?

(301) 864-2121. You call Interstate Service Company directly; AssistAnt never sits in the middle.

Where is Interstate Service Company?

Interstate Service Company serves Brentwood, MD as a service-area business (no street address shown).

Is Interstate Service Company still in business?

Listed from public business records, last updated September 30, 2026. Call to confirm.

Is Interstate Service Company licensed and insured?

Not verified by AssistAnt yet. Ask for proof of license and insurance before you hire.

Who else is near Brentwood?

AssistAnt lists 495 HVAC companies near Brentwood. Closest to Interstate Service Company: Allied Fast Service Company (0.2 mi), Hurley Company (0.4 mi), Boiler Store (0.4 mi).

Interstate Service Company · (301) 864-2121

AssistAnt › Pro directory › Brentwood, MD

What we do

Services

❄️Heating & air conditioning (HVAC)

Checked, with dates

🧾 Trust Card · 2 receipts

Listed in the AssistAnt 24/7 directoryBusiness record from Overture Maps open business data (CDLA-Permissive-2.0).
Sep 30
Shown as open for business in the source dataOperating status in the business record.
Sep 30

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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In their words

Customer reviews

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Where

Service area

Map of the Brentwood, MD area (© Google). Is this your business? Claim it and put up your own photos →

About Interstate Service Company

Interstate Service Company is listed on AssistAnt for heating & air conditioning (hvac) in Brentwood, MD.

Built from public business information. Call to confirm before you go.

Contact

Phone: (301) 864-2121
Website: isc-HVAC.com
Location: Brentwood, MD, 20722 (service area)
Booking: Not bookable online yet. Call the business directly.

Listed from public recordsNot verified yet. Details come from open business data and may be out of date.See the Trust Card: what we checked, how and when →

Quick facts about Interstate Service Company

What is the phone number for Interstate Service Company?: (301) 864-2121. You call Interstate Service Company directly; AssistAnt never sits in the middle.
Where is Interstate Service Company?: Interstate Service Company serves Brentwood, MD as a service-area business (no street address shown).
Is Interstate Service Company still in business?: Listed from public business records, last updated September 30, 2026. Call to confirm.
Is Interstate Service Company licensed and insured?: Not verified by AssistAnt yet. Ask for proof of license and insurance before you hire.
Who else is near Brentwood?: AssistAnt lists 495 HVAC companies near Brentwood. Closest to Interstate Service Company: Allied Fast Service Company (0.2 mi), Hurley Company (0.4 mi), Boiler Store (0.4 mi).

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AI Visibility Score

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What the AIs say

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Other HVAC companies nearby

Allied Fast Service CompanyBrentwood, MD · 0.2 mi
Hurley CompanyBrentwood, MD · 0.4 mi
Boiler StoreBrentwood, MD · 0.4 mi
D&a Heating & CoolingHyattsville, MD · 1.0 mi
Magnolia Plumbing, Heating & CoolingHyattsville, MD · 1.4 mi
HugeeWashington, DC · 2.0 mi

All HVAC companies near Brentwood, MD (495) →

Every trade and local freelancer in Brentwood →

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