STM Services L.L.C.HVAC contractor in Washington, D.C., DC
STM Services L.L.C. is an HVAC contractor in Washington, D.C., DC, rated 4.9 from 37 Google reviews. Open 7 days a week.
Washington, D.C., DC0 paid placements in any rankingHow we rank
Key facts
| Phone | (202) 375-4097 |
|---|---|
| Website | stmserviceswashingtondc.com |
| Hours | Monday to Sunday: 7 AM – 7 PM |
| Google rating | 4.9 from 37 Google reviews |
Trades
Each trade shows the evidence we matched it on.
- HVACmain tradeGoogle main category
Service area
Serves Washington, D.C. and 3 towns within 25 miles: Shaw, Adams Morgan and Chevy Chase.
Based in Washington, D.C., DCView on map
Opening hours
| Day | Hours |
|---|---|
| Monday | 7 AM – 7 PMevening |
| Tuesday | 7 AM – 7 PMevening |
| Wednesday | 7 AM – 7 PMevening |
| Thursday | 7 AM – 7 PMevening |
| Friday | 7 AM – 7 PMevening |
| Saturday | 7 AM – 7 PMevening |
| Sunday | 7 AM – 7 PMevening |
- Open evenings (after 6 PM)
- Open Saturdays
- Open Sundays
Typical heating and cooling prices
| Job | Low | Typical | High |
|---|---|---|---|
| AC replacementPer system, installed (unit plus labor); typical range of customer-reported jobs. US national range | $3,887 | $5,978 | $8,073 |
| Furnace replacementPer system, installed; typical range of customer-reported jobs. US national range | $2,823 | $4,814 | $6,896 |
Market ranges for the trade, checked October 2026, not a quote from this business. Ask for a written estimate.
Reviews
ContractorsRanked reviews
No ContractorsRanked reviews yet
4.9from 37 Google reviews
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Questions about STM Services L.L.C.
What are STM Services L.L.C.’s hours?
STM Services L.L.C. is open 7 days a week. Its listed hours are Monday to Sunday, 7 AM – 7 PM. On Saturdays it is open 7 AM to 7 PM, and on Sundays 7 AM to 7 PM. Hours come from the business listing; holiday hours may differ.
What areas does STM Services L.L.C. serve?
Serves Washington, D.C. and 3 towns within 25 miles: Shaw, Adams Morgan and Chevy Chase. The list is based on the business's location and the usual service radius for heating and cooling. Confirm your address is covered when you call.
What do Google reviews say about STM Services L.L.C.?
STM Services L.L.C. has a rating of 4.9 from 37 Google reviews. The CR Score adjusts the star rating for review count, so a high rating from a few reviews counts for less than the same rating from many.
How do I contact STM Services L.L.C.?
Call STM Services L.L.C. on (202) 375-4097. Its website is linked in the key facts on this page. Ask for a written estimate before any work starts.
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Claiming is free. Correct your hours, trades and service area. The CR Score is recalculated from corrected data; payment never changes it.