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TRUSTED BY OAKTON, VA HOMEOWNERS

  • Average homeowner rating star icon4.6
    Average homeowner rating
  • Verified reviews icon3k+
    Verified heating and air conditioning services reviews

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

Avatar for Relax HVAC, Inc.
Relax HVAC, Inc.
5.0(
32
)
Central A/C - Service or RepairBoiler or Radiator Heating System - Install or ReplaceBoiler or Radiator Heating System - Install or Replace - For Business+21 more

Serving Oakton, VA and surrounding areas

Approved

In business since 2008

Free estimates

Emergency services offered

"Had a great experience with Kamal. He is helpful, knowledgable and very dependable. We had a crisis with our old hvac system and were freezing. Kamal was the only one who came within 2 hours on a holiday while others were available only the next day or later. Most were closed that day. I got a great deal on the new SEER16 hvac and have been happy with it. My electric bill has cut down to almost half. Also he offers 2 years of his company’s warranty in addition to the manufacturers 10 year warranty. Highly recommend Kamal and will be using him for future."
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+12

Response time1 day
1 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Magna Tech Temp Air, LLC
Magna Tech Temp Air, LLC
4.8(
167
)
Central A/C - Service or RepairHeat Pump - Repair or ServiceThermostat - Repair or Reprogram+4 more

Serving Oakton, VA and surrounding areas

Approved

Super Service Award Winner

In business since 2016

Free estimates

Emergency services offered

"So happy I worked with Magna for my issue! They came within 45 minutes of me posting on Angie's List... that has to be some kind of record. They diagnosed the issue quickly, clearly communicated what was needed and what the cost would be, and I moved forward with it. My AC was back up and running within an hour. Highly recommend! I've saved Magna Tech's phone number in my contacts and they will be the first company I call every time I have an HVAC issue."
New !6 Seer 3 Ton Air condition
B-Vent
New 80% Gas Furnace Instal
Ashburn Upgrade
Ashburn upgrade

+4

Response time3 hrs
11 neighbors recently requested a quote
Recommended by93%of homeowners
Avatar for OHA HVAC, Plumbing, Chimney & Fireplaces
OHA HVAC, Plumbing, Chimney & Fireplaces
4.9(
27
)
Central A/C - InstallElectric Furnace / Forced Air Heating System - InstallCentral A/C - Service or Repair+19 more

Serving Oakton, VA and surrounding areas

Approved

Super Service Award Winner

In business since 1995

Free estimates

Emergency services offered

"OHA is my go to HVAC company and especially Brendan. Brendan is fantastic. Brendan ia always professional and customer centric. He provides great service by describing what he is doing at the visit and follows it up with a thorough detailed analysis of what he did and found."
AC Maintenance / Tune-Up
AC Maintenance / Tune-Up
AC Maintenance / Tune-Up
AC Maintenance / Tune-Up
AC Maintenance / Tune-Up

+3

Response time1 day
Response rate100%
10 neighbors recently requested a quote
Avatar for Winds of Valley LLC
Winds of Valley LLC
4.9(
145
)
Central A/C - Service or RepairGas Furnace / Forced Air Heating System - RepairHeat Pump - Repair or Service

Serving Oakton, VA and surrounding areas

Approved

In business since 2015

Free estimates

Emergency services offered

"We had some issues with our HVAC. Asked for a quote based on what we thought the issue might be. The team at I-HVAC responded promptly, talked us down (aka explained we didnâ t need what we thought we did), and showed up same day. Prompt, courteous, professional."
I-HVAC
I-HVAC
I-HVAC
I-HVAC
I-HVAC

+5

Response time3 hrs
1 neighbors recently requested a quote
Recommended by99%of homeowners
Avatar for McCrea Heating & Air Conditioning Services of VA
McCrea Heating & Air Conditioning Services of VA
4.6(
373
)
Central A/C - InstallElectric Furnace / Forced Air Heating System - InstallGas Furnace / Forced Air Heating System - Install+21 more

Serving Oakton, VA and surrounding areas

Approved

In business since 1936

Free estimates

Emergency services offered

"McCrea replaced a 20 year old HVAC system with a new Trane 4-ton XL16i condenser, XV80 furnace and new coils. The salesman, Mark, was very responsive to my request for quote changes or additional items, including financing options. He was very knowledgeable and patient through the entire process as I worked with other companies for competing quotes. As a result of Mark’s recommendations and excellent pricing, I added on a new Aprilaire 1210 filter box (including replacing a portion of the return duct work/box) and an Aprilaire 600M whole house humidifier. I was able to schedule install four days after signing the contract. The installers, Charles and Christian, arrived on time and removed the old and installed the new in about 7 hours. They provided an overview of system operation and cleaned up so well, you couldn’t tell that a significant installation had occurred. I would recommend McCrea, especially Mark, Charles, and Christian to anyone...they were professional and did an excellent job. My home is so much more comfortable with a system that will be better on the summer and winter utility bills."
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Trane Unit
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25 neighbors recently requested a quote
Recommended by91%of homeowners
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Heating and Air Conditioning FAQs, answered by experts

The size window AC you need depends on the BTU and the size of the room you’re cooling. For a room with 8-foot ceilings, look for about 20 BTU per square foot of the room. For example, a 12-by-12-foot room should have an air conditioner with 2,880 BTU. You can buy something slightly more powerful, but don’t overshoot the BTU for a small room, or you’ll waste energy and have higher bills.

An AC drip pan may stop draining if there’s a clog where the drip pan connects to the drain line. Clogs can form from a lack of cleaning or from rust or corrosion buildup. Cleaning the drip pan at least once per month lowers the chances of debris clogging the drain line.

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.

Yes, you can build a deck over your outdoor HVAC unit, but you need to leave at least 5 feet of vertical clearance above the unit. If you don’t want your deck to be that high off the ground, you could build a floating deck in another part of your yard—again, as long as you leave at least 4 feet of horizontal space between the deck and your AC unit.

Yes, a dirty evaporator coil can freeze up. Dirty evaporator coils can’t absorb or transfer heat properly. The dirt and grime restrict airflow, which is needed to move heat throughout the system properly. Your air conditioning unit could freeze over, or it can cause your heat pump to freeze.

The Oakton, 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.