4703 Decatur Street, Edmonston, MD · 0.8 mi
RoofingSource: OSM
HVAC · Plumbing
John C. Flood
HVAC contractor in Brentwood, Maryland
- Category
- HVAC · Plumbing
- Address
- 4419 41st Street, Brentwood, MD 20722
- Phone
- (301) 222-0745
- Website
- johncflood.com/maryland/?y_source=1_Mjc3ODExNS03MT
- Opening hours
- Mo-Fr 07:00-21:00; Sa-Su 08:00-16:00
- Data checked
- November 6, 2026 (OpenStreetMap)
Before You Hire
Facilities usually schedule HVAC contractors at least twice a year, before cooling and heating seasons. Ask:
- Do you take commercial work, and do you service buildings like ours?
- Can you send a certificate of insurance naming us as additional insured?
- Are your technicians EPA Section 608 certified to handle refrigerant?
- Do you service our equipment type and brand (rooftop units, chillers, boilers)?
- What does a service agreement include, visit by visit?
Hiring Tips
- Change filters on a schedule set by your dust load, often every 1–3 months.
- Keep a list of every unit with its model, serial number and age.
- Compare repair quotes against the unit's age before replacing it.
Getting several quotes? Line them up in the quote comparison tool and check the contract checklist before you sign.
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