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TRUSTED BY COLUMBIA, VA HOMEOWNERS

  • Average homeowner rating star icon4.5
    Average homeowner rating
  • Verified reviews icon76
    Verified heating and air conditioning services reviews

Top-Rated Heating and air conditioning pros in Columbia - Updated Nov 2026

Old Dominion Heating and Air LLC
5.0(
15
)
Central A/C - Service or RepairGas Furnace / Forced Air Heating System - RepairElectric Furnace / Forced Air Heating System - Repair+9 more

Serving Columbia, VA and surrounding areas

Approved

Super Service Award Winner

In business since 2013

Free estimates

Emergency services offered

"We had excellent service from Old Dominion Heating and Air Conditioning. He called us within in minutes of receiving our request for service. He was out the very next day. Found the problem went over every detail with us. We had 3 other technicians come out from different companies and none of them could find the problem but they didn't even take the cover off to look at the inside of the Mini Split. Old Dominion gave us a fair price to fix the unit and they ordered the parts and had the work done the day after parts arrived. We can say we are more than pleased with their service and would highly recommend them. They went above and beyond to find the problem. Great Job and very polite."
Response time6 hrs
Response rate86%
13 neighbors recently requested a quote
United HVAC Mechanics LLC
New to Angi
Central A/C - InstallCentral A/C - Service or RepairDuctless Mini-split A/C - Install or Replace+8 more

Serving Columbia, VA and surrounding areas

Approved

Emergency services offered

Warranties offered

Offers commercial services

Detail-oriented HVAC Sheet Metal Mechanic and Sub-Contractor with 15+ years of experience in ductwork installation and mechanical systems. Proven expertise in reading blueprints, performing layouts, and ensuring compliance with building codes. Skilled in managing projects and leading teams, with a strong focus on quality and customer service. Holds EPA Type II certification and possesses a comprehensive understanding of HVAC systems, ready to tackle new challenges in the industry.

Avatar for International Mechanical Inc
International Mechanical Inc
New to Angi
Thermostat - Repair or Reprogram

Serving Columbia, VA and surrounding areas

Approved

Free estimates

Emergency services offered

Warranties offered

International Mechanical, Inc. is a licensed and insured HVAC contractor providing residential and light commercial heating and air conditioning services. We specialize in HVAC installation, replacement, repair, and preventive maintenance for air conditioners, heat pumps, furnaces, air handlers, thermostats, ductwork, and indoor air quality systems. Our experienced technicians are committed to delivering reliable workmanship, honest recommendations, and exceptional customer service. Whether you need AC repair, heat pump service, furnace maintenance, refrigerant leak detection, duct modifications, condensate drain cleaning, or a complete HVAC system replacement, we provide efficient, cost-effective solutions to keep your home or business comfortable year-round. We take pride in quality work, fair pricing, prompt service, and customer satisfaction on every project.

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Heating and Air Conditioning FAQs, answered by experts

Yes, a dehumidifier and air conditioner can be used simultaneously in a home. A dehumidifier can bolster an air conditioner’s efficiency. Typically, a dehumidifier is used when the air conditioner alone cannot keep a home’s humidity levels at a comfortable indoor humidity level, which should, ideally, be between 30% and 50%.

It’s normal to hear a low humming sound as air moves through your vents. Most of the time, you probably won’t even notice it. However, if that sound becomes disruptive or if you hear more concerning noises (such as rattling, clicking, banging, hissing, or grinding), there might be a problem with your HVAC system.

The cost of R32 refrigerant is about the same as the cost of R410A refrigerant, the most widely available type of refrigerant today. However, R32 systems use about 20% less refrigerant than R410A systems, making the refrigerant less expensive overall.

To keep your air conditioner in good working condition, you should have it serviced by a professional at least once per year, ideally in the spring before the cooling season begins. If your AC unit is 10 years or older, consider servicing it twice a year (once in the spring and once in the fall) to catch potential problems early and help it reach its full lifespan. During a service visit, a technician will inspect, clean, and replace parts as needed. Regular maintenance helps avoid costly repairs. As a DIY task, you can also clean the evaporator coils annually.

Excessive humidity in a room often manifests through visible signs like condensation on windows or walls, a musty or damp odor lingering in the air, peeling wallpaper or paint, and the presence of mold or mildew. Experiencing discomfort due to a consistently clammy or sticky feeling can also indicate high humidity levels.

The Columbia, VA homeowners’ guide to heating and air conditioning services

From average costs to expert advice, get all the answers you need to get your job done.