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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, you can clean AC coils yourself. Just make sure that the power to your AC system is off before you begin. You’ll need some basic tools and supplies, including a soft brush, cloth, screwdriver, and a commercial or homemade cleaning solution. Cleaning your coils will only cost about $10.

To reduce AC startup power for a whole-house generator, install a soft start kit or hard start capacitor, which lowers the initial surge by gradually ramping up the compressor. Using a smart load manager can also help by staggering startup loads, preventing a system overload and future costly repairs.

Because of the improved efficiency, ACs with higher SEER ratings tend to cool down your home better than models with a lower SEER. Higher-SEER AC units have a higher cooling capacity and a lower energy demand, meaning they may help cool your space faster without running up the electricity bill.

The general rule of thumb for figuring out how much AC tonnage you need in your home is that for every 500 to 600 square feet of space you need to cool, you’ll need one ton of AC cooling power. So, a 1,000-square-foot home will need 2 tons of AC power. 

Common signs of insufficient return air include uneven temperatures, with some parts of your home feeling hotter or colder than others, and noticeable differences in air pressure between rooms. You might also observe that more air is blowing in rooms closer to the AC unit. Leaky air ducts can also be a related issue or clue.

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.