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One Hour Air Conditioning & Heating®

Baltimore HVAC Companies
Ranked #9 in Baltimore | Grade B-
4.80 (227 reviews)

One Hour Air Conditioning & Heating®

Heating and cooling repair, replacement, and maintenance in the Baltimore area with everyday scheduling and clear on-site explanations.

Why Homeowners Choose This Business

Open every day for scheduling, with clear communication on findings and next steps. Technicians arrive prepared with common parts and explain options on-site. Service approach focuses on restoring comfort and preventing repeat issues where possible.

Service Area

Serving Baltimore and nearby communities throughout the greater metro area.


How This Business Compares

A quick local comparison based on ranking, review strength, and market visibility.
  • Shows strong customer satisfaction signals based on review quality and volume.

Trust Signals

Emergency Service - Scheduling shown as open 24 hours; call to confirm current availability for urgent needs.

Services Covered

  Renovation Services
  Service
  Commercial Service
  HVAC repair
  AC Repair
  Residential Service
  Furnace Repair
  Maintenance
  Heat Pump Service
  Installations
  HVAC Maintenance
  Repairs
  Thermostat Installation
  Air conditioner replacement
  Furnace Installation
  Heating Service
  Cooling Service
  Indoor Air Quality
  Emergency HVAC

Heating and AC repair, diagnostics, and tune-ups; furnace and air conditioner replacement; heat pump services; thermostat installation and troubleshooting; air quality accessories such as filters and basic humidification components.


Recent Reviews

4.80

(Based on 227 reviews)

Reviews frequently note polite, professional technicians who explain issues clearly and complete repairs during the first visit. Several customers mention quick weekend or same-day help. A smaller number report concerns about pricing clarity and instances where problems required a follow-up visit. Overall ratings trend very positive with appreciation for courtesy and communication.

Mr. Summers was excellent he showed me what my problem was. He had the parts he replaced them. He was courteous very well pleased with him.

The tecHe is a very good specialist. I was very impressed. He was very polite and knows his job well.hnician came on the weekend and was polite.

The technician was polite and did come out, but unfortunately the issue with the heating was not fixed. After the visit, the system stopped working again and we had to schedule another appointment. I appreciate the effort, but the problem wasn’t properly resolved.

Excellent service representative young Blandon. He explained everything in detail on an understandable level. He is professional and proficient in services provided. I'll be using this company services for my next upcoming project. Thank you for asking.

I scheduled a consultation, I was not present at my address when they arrived . A family member of mine welcomed them in and I was surprised when I got a call back saying they wanted almost $400 for work done. I was under the impression you would review the issues and the invoice before performing work without authorization. I payed what they asked but I am very unpleased .


Special Offers

Emergency Service

Emergency service may be available for urgent issues.


Frequently Asked Questions

They work on central air conditioners, furnaces, and heat pumps, along with common thermostats and related components. Basic indoor air quality accessories may also be supported depending on the home’s setup.

Scheduling is available every day, and the listing indicates 24-hour availability. Call to confirm current response times for nights, weekends, and holidays.

Technicians typically review findings and discuss pricing before proceeding. If you have budget preferences or approval requirements, mention them during booking and at the start of the visit.

Many repairs are completed on the spot when parts are on the truck and the issue is straightforward. More complex problems or specialized parts may require a follow-up visit.

Ensure access to the indoor unit, thermostat, and outdoor equipment, and secure pets. Have any recent error messages or prior service notes ready to help speed diagnostics.
 Verified Listing

Opening Hours


  • Monday Open 24 hours
  • Tuesday Open 24 hours
  • Wednesday Open 24 hours
  • Thursday Open 24 hours
  • Friday Open 24 hours
  • Saturday Open 24 hours
  • Sunday Open 24 hours

Request Service


Business Details


Business Rating
4.80 (227 reviews) FeaturedPro Business
Address
3702 Yosemite Ave, Baltimore, MD 21215, USA, Baltimore, MD 21215, US
Business Type
general_contractor

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