How do you know if your AC drain line is clogged?

• <div><p>If your drain line is clogged, your AC might stop cooling, shut down, or refuse to turn on at all. Otherwise, you might see your <a href="https://www.angi.com/articles/why-is-my-ac-leaking.htm">AC leaking water</a>, find standing water or water damage near the unit, or notice a musty smell coming out of your air conditioner or vents.</p></div>

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There are 6 highly-rated local heating and air conditioning pros.

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Verified Reviews for Heating And Air Conditioning Service pros in Harker Heights, TX

*The Angi rating for Heating And Air Conditioning Service companies in Harker Heights, TX is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Heating And Air Conditioning Service needs.

*The HomeAdvisor rating for Heating And Air Conditioning Service companies in Harker Heights, TX is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Heating And Air Conditioning Service needs.

Last update on October 09, 2025

Reviewed in June 2025
I highly recommend Dan for any type of work around the house. He has helped me with my a/c on multiple occasions, my bathtub/faucets, and just recently my hot water heater. I was very happy with the work Dan has done for me. He responded immediately and was able to work around my schedule. Very...
Dan the Handyman
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Reviewed in June 2025
DAD?S Thermostat is the best! Super friendly with excellent customer service. Living in Texas it?s a MUST to make sure the AC is running properly so any time there?s an issue with it, Steven and his team gets the job done. DAD?s Thermostat will always be our go-to A/C company!
DAD'S THERMOSTAT LLC
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Reviewed in May 2024
This company was hired by American Home Warranty to fix my A/C. They did set up an appointment. They did find the first issue and repaired it. After replacing the blower fan, they found out the zone control board was bad, which isn't covered under my extended home warranty. But, I told...
AR-Tex A/C & Heating
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Reviewed in September 2023
I just moved to Killeen and needed a handyman for my new place . Got a new water heater installed , a new toilet and pump replacement on another toilet. Blind replacement new ac installation etc all the necessities Hired Ajax Repair The service was great The work was quality Def would...
Ajax Repair
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Reviewed in October 2021
Omg they are life savers! Replaced my water heater and ac in 1 day!
Fix It Services
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Reviewed in March 2021
Fantastic service. Fair price and great work. will definitely use Air Texas Heating and Cooling in the future
Air Texas Heating And cooling
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Reviewed in September 2019
Prompt, courteous and professional. Jorge with Chavez ACS answered all my questions about my HVAC systems. He even informed me of insufficiencies in my previous provider’s work. The work performed was excellent and at a budget friendly price. I will definitely make Chavez my primary source in...
Chavez Air Conditioner Service
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Reviewed in December 2016
I have requested that the charges for services which were provided to the system (which is still under warranty), be refunded, or for the company to complete the appropriate repairs/services which should have been done with the original service and installation. During installation, duct work...
Airheads HVAC
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Reviewed in July 2015
I emailed them yesterday and received a call first thing today. Their arrival was for 12pm to 2pm. The technician was here right at noon. He was very nice and performed the needed repairs in a short time. He also had the parts needed on hand so no waiting for parts to be shipped. I highly...
Waters Plumbing Heating & Air
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Reviewed in December 2014
They did excellent, and price is very reasonable, and they come the say day you call them for heating and air conditioning issues. I would call them every time if I needed. I have been using them for 6 years.
Airmax Air Care
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Heating and Air Conditioning questions, answered by experts

While it's generally safe to stay in a home with a coolant leak if your home is properly ventilated, it's important to have a professional come out to assess the situation right away. You should evacuate your home if you notice any powerful fumes. Additionally, you should leave your home if you are experiencing headaches or dizziness.

When faced with HVAC issues, it's best to begin by ensuring the thermostat settings are correct for either heating or cooling. If the system isn't responding, check the thermostat for proper function and power supply. It's also important to examine air filters, as clogged ones can decrease performance. Confirm the power supply to the system by checking the circuit breakers and fuses. If these basic steps fail to resolve the issue, contact an HVAC professional for a more detailed diagnosis and repair.

If your drain line is clogged, your AC might stop cooling, shut down, or refuse to turn on at all. Otherwise, you might see your AC leaking water, find standing water or water damage near the unit, or notice a musty smell coming out of your air conditioner or vents.

The best way to reduce heat upstairs is to release it by opening a window. Hot air rises, and if you can create some airflow by opening a window upstairs and also one on a lower level, the hot air should be pushed out of the home. Remember that fans pointing out the window do a much better job of circulating air than fans pointing into the home.

Poor cooling, unusual noises, or frequent cycling are indicators that professional service is needed.

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The Harker Heights, TX 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.

See all articles

Paige Bennett
•
May 9, 2025May 9, 2025
How Much Does a Coolant Leak Repair Cost on Your Air Conditioner? [2025 Data]
Here's what you can expect when getting an estimate for coolant leak repair costs. The cost can vary based on the detection method used, the source of the leak, and the amount of damage that needs to be repaired in the aftermath.
Paige Bennett
•
May 16, 2025May 16, 2025
How Much Does a Gas Furnace Cost? [2025 Data]
Gas furnace replacement costs depend on the type of furnace you want and installation fees. Our guide explains all the factors involved in a new furnace cost.
Mizuki Hisaka
•
May 27, 2025May 27, 2025
How Much Does HVAC Maintenance Cost? [2025 Data]
Springing for HVAC maintenance costs may seem like an extra—and easy-to-ignore—item on your checklist, but it will save you money in the long run.
Stephanie Mickelson
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Aug 18, 2025Aug 18, 2025
The Pros and Cons of Dual-Home Air Conditioners
Keeping your home cool all summer can be a challenge. Read on to learn the pros and cons of dual-home air conditioners.
Stephanie Mickelson
•
May 29, 2025May 29, 2025
Furnace Size Calculator: What Size Furnace Do I Need?
This calculator will help you determine what size furnace you need to keep your home toasty warm this winter.
Brionna Farney
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Aug 1, 2025Aug 1, 2025
What Is an AC Tune-Up and Is It Necessary?
Will an annual tune-up extend the life of your air conditioner? Read on to learn the average cost of an AC tune-up, and whether it’s worth the price tag.