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TRUSTED BY KILLEEN, TX HOMEOWNERS

  • Average homeowner rating star icon4.7
    Average homeowner rating
  • Verified reviews icon291
    Verified heating and air conditioning services reviews

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

Avatar for Bob Jay's HVAC & Plumbing
Bob Jay's HVAC & Plumbing
4.8(
42
)
Central A/C - Service or RepairCentral Air Cleaner - Repair or ServiceElectric Furnace / Forced Air Heating System - Repair+6 more

Serving Killeen, TX and surrounding areas

Approved

In business since 1973

Free estimates

Warranties offered

"I started using Bob Jay's HVAC & Plumbing when I bought my home in 2016 and have been using them every since. Justin and Colby are top notch, very respectful, know what they are doing and get the job done and I have been and will continue to recommend them thanks Bob Jay's!"
New Install Trailer
Retro-fit install
Thermostat
Annual Maintenance
Response time9 hrs
Recommended by100%of homeowners
ColdAir Mechanical
5.0(
40
)
Central A/C - Service or RepairHeat Pump - Repair or ServiceElectric Furnace / Forced Air Heating System - Repair+6 more

Serving Killeen, TX and surrounding areas

Approved

In business since 2003

Warranties offered

Credit card accepted

"I've been hiring Tony from Cold Air Mechanical for about 10 years. First for my apartment management business when my on staff techs couldn't figure out the problem and then at my home. He's always very pleasant to work with and very knowledgeable. Where I've had other HVAC techs try to sell me unnecessary equipment for outrageous prices (thank you Private Equity), he's actually identified the problem and usually has the part in his van at a fair price. While I'm not HVAC certified, I know my way around and I'd definitely recommend Tony."
Response time2 days
26 neighbors recently requested a quote
Recommended by2%of homeowners
Anointed Air
4.8(
26
)
Central A/C - Service or RepairCentral A/C - InstallDuctless Mini-split A/C - Install or Replace+13 more

Serving Killeen, TX and surrounding areas

Approved

In business since 2018

Free estimates

Credit card accepted

"Theo, the owner is great as an HVAC pro. We asked him to come out for the tune-up going into the summer season. He checked, very thoroughly, both our units. One was good to go, but the other one needed 6lbs of freon. Theo explained everything and showed us everything that he checked. He even tried to work with our home warranty company to see if they would cover the cost of repair/replacement, but they would not. Theo gave us our options and we asked him for his honest recommendation. He said a new unit. Ours is nearly 20 years old and has been repaired several times recently. We went with a new unit and he was able to install it within two days of us talking. He made sure the installation was smooth and with minimal interruptions. His thoroughness have us feeling better about our decision and trust in his judgement and professionalism. Very good HVAC pro and a good guy to do business with during these times."
Response time1 day
Response rate88%
2 neighbors recently requested a quote
Avatar for Prichard's Air Conditioning and Heating, LLC
Prichard's Air Conditioning and Heating, LLC
5.0(
13
)
Central A/C - Service or RepairDucts & Vents - Install or ReplaceElectric Furnace / Forced Air Heating System - Repair+8 more

Serving Killeen, TX and surrounding areas

Approved

Super Service Award Winner

In business since 2014

Free estimates

Emergency services offered

"The tech was very knowledgeable and skillful. He had to install the new blower fan into the existing fan housing, but he took the existing blower assembly (fan, motor, electrical, and housing) out to his truck in inclement weather to do the work. I offered up my garage, but he said that he would be fine out in his truck. From start to finish it could not have been more than 40 minutes. The blower unit runs and sounds like a brand-new install. Very quiet. Prior to the repair the blower sounded like a freight train passing through the house. Very happy and the cost was reasonable."
Prichards AC Pictures
Prichards AC Pictures
Prichards AC Pictures
Prichards AC Pictures
Prichards AC Pictures

+6

Response time4 hrs
Response rate94%
9 neighbors recently requested a quote
Avatar for CenTex Superior Services
CenTex Superior Services
5.0(
30
)
Central A/C - InstallCentral A/C - Service or RepairDuctless Mini-split A/C - Install or Replace+6 more

Serving Killeen, TX and surrounding areas

Approved

In business since 2023

Free estimates

Small jobs welcome

"They did a great job repairing my light fixtures and replacing/repairing my bathroom fan. Their prices were fair and I managed to get quotes for future work. They were friendly and attentive, as well . I will definitely use their services again!"
Ac Service and Repair
Electrical Service and Repair
Response time12 hrs
Response rate90%
7 neighbors recently requested a quote
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Showing 1-10 of 296
Heating and Air Conditioning FAQs, answered by experts

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.

As mentioned above, not all HVAC Schrader valves are necessarily the same. While the valve core and pin or spring size on Schrader valves used for HVAC are generally similar, the valves are not all universal and interchangeable. The size of Schrader valves varies depending on whether it's used in an air conditioner, bicycle tire, or motor vehicle tire.

When your AC contactor goes bad, you might hear chattering or buzzing noises coming from your air conditioner. You may also notice that your AC is running but isn’t cooling your home. In some cases, your air conditioner might not even turn on at all. There could also be physical damage, discoloration, or corrosion around the contactor.

ACs don't run on water. They're not connected to drain pipes or any part of your plumbing system. However, they need refrigerant to run. Refrigerant is a gas or liquid that has a low boiling point and absorbs the heat in your home. ACs need this in order to be functional and cool your home. If you suspect your AC is low on refrigerant, you need to contact a licensed HVAC professional. Refrigerant is a dangerous chemical that requires specialized training and permits to work with. 

Most HVAC surge protectors last about three to five years, depending on how often your home experiences blackouts or brownouts. If your unit is susceptible to more frequent electrical surges, consider replacing your surge protector every two years. Consult your HVAC professional to determine when and how often to replace your HVAC surge protectors.

The Killeen, 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.