Heating, AC & Duct Cleaning,
Done Right the First Time.
Su'Coy has kept DMV homes comfortable since 1996. Repairs, new systems, tune-ups and clean air from one local crew — and an owner who actually answers the phone.
- 24/7 emergency service
- 10% off your first service call
- 10-year parts & labor warranty
- Free estimates on new installs
- 0% interest financing
- Straight pricing, no upsells
Phones answered 24/7, including evenings and weekends.
Get Your Free Estimate
- No obligation
- 1-hour response
- Your info is safe
- 30+Years in the DMV
- 5,000+HVAC units repaired
- 24/7Phones answered
- 10-YrParts & labor warranty
Heating, Cooling & Clean Air From One Crew
Repairs, new systems, seasonal tune-ups and indoor air quality. Su'Coy has handled all of it across DC, Maryland and Northern Virginia since 1996 — same crew, whichever service you call about.
24/7 Emergency
AC Repair & Installation
Won't cool, won't start, or icing over? We find the real fault first, then repair or replace it.
- Same-day diagnosis in most cases
- Repairs and full system replacements
Heating & Furnace Repair
Furnaces and heat pumps that won't fire, short-cycle, or leave half the house cold.
- Furnace, heat pump & air handler
- Safety and control checks included
Maintenance & Tune-Ups
Seasonal service that catches the small stuff before it turns into a breakdown in July.
- Full system inspection & cleaning
- Comfort Guardian plan available
Indoor Air Quality
Filtration, purification and humidity control fitted to the system you already own.
- Whole-home purifiers & filters
- Humidifiers and dehumidifiers
Cleaner Air
Air Duct Cleaning
Built-up dust and debris pulled out of the supply and return ducts, registers included.
- Whole-house supply & return ducts
- Certified mold inspection & removal
Thermostats & Controls
Wiring faults, dead control boards and smart thermostats that won't hold a setting.
- Smart thermostat setup
- Control board & wiring repair
Brands We Install & Service
We service every major heating and cooling brand — not just the systems we sell.
+ All OtherMakes & Models
Get 10% off your first service call.
Average answer time: under 60 seconds.
Four Steps to a Comfortable Home
No surprises along the way — you'll know the problem and the price before we start.
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Call or Request an Estimate
Call (301) 889-9448 or fill out the form. Tell us what the system is doing — or not doing.
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We Diagnose On-Site
A technician finds the actual fault and shows you what's wrong before recommending a fix.
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You Hear the Price First
You get the cost before we touch the system. Nothing gets added after the work is done.
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Fixed Fast, Backed 10 Years
Most jobs are finished on the spot, backed by our 10-year parts & labor warranty.
A Local DMV Team Since 1996
Su'Coy started out fixing heating and cooling systems around Washington, DC in 1996 and never moved away from it. Three decades later the same crew still runs the calls — which is why the person who answers your phone usually knows your street. Duct cleaning and air quality have been part of the work from the start.
- 1996Serving the DMV
- 5,000+Units repaired
- 10-YrWarranty
The Work We Handle Every Week
From furnace boards and condenser repairs to duct cleaning, filters and air purifiers — here's the range Su'Coy covers across the DMV.
Heating, AC & Duct Cleaning Near You
Dispatched from our Washington, DC office across the District, Prince George's County, Montgomery County, and Northern Virginia.
- Capitol Hill
- Navy Yard
- Brookland
- Petworth
- Columbia Heights
- Cleveland Park
- Bowie
- Upper Marlboro
- Largo
- Hyattsville
- College Park
- Oxon Hill
- Silver Spring
- Bethesda
- Rockville
- Alexandria
- Arlington
- McLean
- Falls Church
- Springfield
- Annandale
Don't see your neighborhood? Call (301) 889-9448 — we probably still cover it.
Rated 4.9 by 228 Homeowners on Google
Heating, AC & Air Quality FAQs
What services does Su'Coy offer?
AC repair, installation and maintenance; furnace and heat pump repair; air duct cleaning; mold inspection and remediation; air filtration and purification; humidifiers and dehumidifiers; and thermostats and controls. One crew handles all of it, so you're not calling three companies.
Do you offer emergency service?
Yes. Su'Coy answers the phone 24/7, including evenings and weekends, and same-day service is available across the DMV.
What areas do you serve?
Washington, D.C., Prince George's County, Montgomery County and Northern Virginia — including Capitol Hill, Brookland, Petworth, Columbia Heights, Bowie, Upper Marlboro, Largo, Hyattsville, Silver Spring, Bethesda, Rockville, Alexandria, Arlington, McLean, Falls Church, Springfield and Annandale.
Do you service all brands?
We service every major make. We install Trane, Goodman, Bosch, Daikin, Carrier, Amana, Lennox, Rheem and Ruud — but repairs aren't limited to those brands.
Do you have a maintenance plan?
Yes. The Comfort Guardian Plan is $89 a month and covers two tune-ups a year, safety testing, and 10% off repairs.
Are estimates free, and do you offer financing?
Estimates on new system installations are free, and qualified buyers can use 0% interest financing. Fill out the form on this page or call (301) 889-9448.
What's your warranty?
Most repairs and new installs are backed by a 10-year parts & labor warranty. Ask your technician for details specific to your job.
Still have a question?
Skip the reading — call us and a technician will answer it in about a minute.