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One Hour Air Conditioning & Heating® of BaltimoreHVAC contractor in Baltimore, MD

One Hour Air Conditioning & Heating® of Baltimore is an HVAC contractor at 3702 Yosemite Ave, Baltimore, MD 21215, ranked #9 of 649 HVAC contractors in Baltimore and rated 4.8 from 219 Google reviews. Open 24 hours a day, 7 days a week.

Baltimore, MDUpdated 0 paid placements in any rankingHow we rank

Call (301) 685-0314Website ↗

Key facts

Key facts about One Hour Air Conditioning & Heating® of Baltimore
Address3702 Yosemite Ave, Baltimore, MD 21215Get directions
Phone(301) 685-0314
Websiteonehourheatandair.com
HoursOpen 24 hours, 7 days a week
Google rating4.8 from 219 Google reviews

Trades

Each trade shows the evidence we matched it on.

  • HVACmain tradeGoogle main category

Service area

Serves Baltimore and 11 towns within 25 miles: Lochearn, Woodlawn, Charles Village, Pikesville, Milford Mill, Catonsville, Arbutus, Lansdowne, Towson, Lutherville and Garrison.

Based in Baltimore, MDView on map

Opening hours

Opening hours for One Hour Air Conditioning & Heating® of Baltimore
DayHours
MondayOpen 24 hours
TuesdayOpen 24 hours
WednesdayOpen 24 hours
ThursdayOpen 24 hours
FridayOpen 24 hours
SaturdayOpen 24 hours
SundayOpen 24 hours
  • Open 24/7
  • Open evenings — no
  • Open Saturdays
  • Open Sundays
  • Emergency service

Typical heating and cooling prices

Typical heating and cooling prices
JobLowTypicalHigh
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.

Compare nearby HVAC contractors

One Hour Air Conditioning & Heating® of Baltimore compared with nearby businesses
BusinessRankCR ScoreGoogle ratingLicense verifiedSaturdaySundayDistance away
One Hour Air Conditioning & Heating® of Baltimore (this business)—894.8 (219)—YesYes
At Your Service Heating and Cooling LLC#7904.6 (811)—YesYes8.4 mi
Len The Plumber Heating & Air, LLC#8894.7 (15,911)—YesYes5.5 mi
Mars Air Duct Cleaning#10894.9 (177)—YesYes2.7 mi

See all 649 ranked HVAC contractors in Baltimore

Questions about One Hour Air Conditioning & Heating® of Baltimore

How is One Hour Air Conditioning & Heating® of Baltimore ranked in Baltimore?

One Hour Air Conditioning & Heating® of Baltimore is ranked #9 of 649 HVAC contractors in Baltimore by CR Score, with 89 out of 100 as of October 2026. The score weighs reputation, credentials, review volume, recency, availability, trade focus, proximity and profile completeness. No business can pay to change its rank.

What are One Hour Air Conditioning & Heating® of Baltimore’s hours?

One Hour Air Conditioning & Heating® of Baltimore is open 24 hours a day, 7 days a week. Its listed hours are Open 24 hours, 7 days a week. On Saturdays it is open Open 24 hours, and on Sundays Open 24 hours. Hours come from the business listing; holiday hours may differ.

What areas does One Hour Air Conditioning & Heating® of Baltimore serve?

Serves Baltimore and 11 towns within 25 miles: Lochearn, Woodlawn, Charles Village, Pikesville, Milford Mill, Catonsville, Arbutus, Lansdowne, Towson, Lutherville and Garrison. 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 One Hour Air Conditioning & Heating® of Baltimore?

One Hour Air Conditioning & Heating® of Baltimore has a rating of 4.8 from 219 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 One Hour Air Conditioning & Heating® of Baltimore?

Call One Hour Air Conditioning & Heating® of Baltimore on (301) 685-0314. The business is at 3702 Yosemite Ave, Baltimore, MD 21215. Its website is linked in the key facts on this page. Ask for a written estimate before any work starts.

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