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TRUSTED BY COLUMBIA, VA HOMEOWNERS

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    Average homeowner rating
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    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 RepairElectric Furnace / Forced Air Heating System - RepairGas 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%
17 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

This is a bit of a trick question. Even though the seasons arrive at the same time every year, the weather doesn’t always behave according to the calendar. So, while it’s fair to say that you can expect to turn on your AC starting in late May or early June, it all depends on the outside temperature and how cool you like to keep your home.

If your central AC is not blowing cold air, you should try resetting the system. Many systems have a reset button. Make sure your thermostat is off, then turn off the circuit breaker that powers your AC. Hold the reset button for three to five seconds, then turn the circuit back on. Set your thermostat to cool and choose a temperature cooler than the room. Your system should turn on quickly.

To make the most out of your AC, consider implementing the following best practices: 

  • Choose the right size AC for your home to ensure your unit runs as efficiently as possible.

  • Choose a window with shade, as direct sunlight can cause your AC unit to overheat. 

  • Clean or replace the filter at least every two months. 

  • Inspect the AC’s fan and straighten it if necessary. 

  • Discontinue use immediately if you suspect a malfunction, as running the AC while broken can lead to significant issues. 

  • Turn off (or adjust the temperature) when you leave the house.

Replacing an HVAC system does not always include new ductwork. The decision depends on the condition of your existing ducts. If they are in good shape, correctly sized for the new unit, and meet current standards, they can often be reused. However, if the ducts are damaged, poorly designed, or improperly sized, they will likely need to be replaced or upgraded to ensure the new system operates efficiently. An HVAC contractor will assess your ductwork and recommend the best course of action. Typically, ductwork is purchased separately, and a full replacement will add to the overall project cost.

A dirty air conditioning coil can cause your unit to work overtime, leading to reduced efficiency, higher energy use, more wear and tear, and possible ice buildup. If the coils corrode, refrigerant can leak, causing damage, possible mold growth, and an expensive repair bill. By cleaning your AC coils once a year, you’ll have a more efficient unit that’s likely to last longer.

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.