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Find Air conditioning pros in Eureka

Avatar for Fresh Air Heating & Cooling
Fresh Air Heating & Cooling
4.8(
277
)

Serving Eureka, MO and surrounding areas

Approved

In business since 1947

Free estimates

Emergency services offered

"I had another company diagnose a compressor failure on my 9 year old heat pump. I decided to get a new heat pump. After calling around and getting quotes I went with Fresh Air because they sell name brand products and were very responsive and punctual unlike all other companies I got quotes from. The technician was on time and kept me involved in the install/testing process. It's rare to have a good experience from the service industry, but Fresh Air delivered with no surprises."
Fresh Air Van
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+2

10 neighbors recently requested a quote
Recommended by92%of homeowners
Avatar for SmartHouse Heating & Cooling
SmartHouse Heating & Cooling
4.7(
593
)

Serving Eureka, MO and surrounding areas

Approved

In business since 1947

Free estimates

Emergency services offered

"We hired Smarthome to insulate our attic. They were not the lowest bid, but their expertise, particularly about the various insulation options, convinced us to go with them. And I am so very glad that we did. Not only did they do everything we expected in terms of insulating our attic, they noticed that the duct work in our air conditioning system had not been properly sealed. We had been wrestling with the unit's inability to cool our house for years, and our regular HVAC provider told us that this was the best the system could do. In fairness, we have an old house and a complex air conditioning set up. Smarthouse both diagnosed the problem and undertook the necessary fixes for a very reasonable price. As a result our house is markedly cooler and our electrical bill has come down a bit. This is a great company. They know what they're doing and they genuinely seem to care."
Old boiler being removed
A Manual-J load calculation is performed to determine the precise amount of heating and cooling needed for each space.
Installing a Mitsubishi Hyper Heat Mini Split System to Heat and Cool this Sunroom Addition.
Mitsubishi outdoor unit installed on rooftop to heat and cool 3rd floor of this St. Louis City home.
Daikin FIT Heat Pump Installed in University City Home

+106

Response time3 days
5 neighbors recently requested a quote
Recommended by91%of homeowners
Avatar for Mechanical Climate Solutions, LLC
Mechanical Climate Solutions, LLC
4.9(
66
)

Serving Eureka, MO and surrounding areas

Approved

In business since 2014

Free estimates

Emergency services offered

"MCS techs were very courteous. New HVAC system install went well. They explained all their work professionally. Also found a crack in the flue and replaced which was overlooked by a previous contractor. They are very thorough and reasonable. I highly recommend MCS."
17 Seer 2 stage condensing unit.
Response time11 hrs
2 neighbors recently requested a quote
Recommended by98%of homeowners
Avatar for Rhymes Heating & Cooling
Rhymes Heating & Cooling
4.8(
193
)

Serving Eureka, MO and surrounding areas

Approved

In business since 1993

Free estimates

Emergency services offered

"Furnace replaced, air conditioner repaired- very pleased with Rhymes. They always make sure you are totally satisfied with the work they do!"
Response time12 hrs
7 neighbors recently requested a quote
Recommended by98%of homeowners
Avatar for Liberty Heating & Cooling
Liberty Heating & Cooling
4.8(
46
)

Serving Eureka, MO and surrounding areas

Approved

Super Service Award Winner

In business since 2017

Emergency services offered

Warranties offered

"Sam is honest and very professional, working 12 to 14 hours per day to keep his customers cool. We had work done on our A/C and he used all of his Freon on our A/C. Sam assured us he would return. Unfortunately, before Sam could return with more Freon, our thermostat quit working. We called Sam in the afternoon and he assured us he would stop by. Sam did call on his way and he arrived a few minutes before 9 pm. Sam is wonderful!"
A/C replacement
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+10

6 neighbors recently requested a quote
Recommended by93%of homeowners
Avatar for Redbird HVAC LLC
Redbird HVAC LLC
4.9(
57
)

Serving Eureka, MO and surrounding areas

Approved

In business since 2017

Free estimates

Emergency services offered

"I hired them again because they installed my water heater in June and did a great job. Customer service exceeded my expectation. I am hiring them again to repair my central air."
Carrier Furnace
1 neighbors recently requested a quote
Recommended by98%of homeowners
Avatar for Hosack Plumbing Heating & Cooling
Hosack Plumbing Heating & Cooling
4.8(
344
)

Serving Eureka, MO and surrounding areas

Approved

In business since 2009

Warranties offered

Credit card accepted

With over twenty-five years of experience in the industry, Hosack Plumbing Heating & Cooling is the right team to trust with all of your plumbing and heating and cooling needs. Our professional St. Louis technicians are highly skilled, extensively trained, extremely knowledgeable, and expertly proficient. We specialize in commercial and residential plumbing as well as residential heating and cooling. Our technicians will do everything possible to ensure that you have the most reliable and efficient plumbing and hvac systems possible.

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+2

Response time6 days
10 neighbors recently requested a quote
Recommended by93%of homeowners
Perfect Air
4.7(
6
)

Serving Eureka, MO and surrounding areas

Approved

In business since 1982

Emergency services offered

Warranties offered

Founded in 1982. Team members that are drug tested and background checked insuring that the people in your home are safe. We specialize in repairing and replacing residential heating and air conditioning systems. "Fixed Right or It's Free"\nTechs available Sat & Sun call for appointment.

1 neighbors recently requested a quote
Recommended by100%of homeowners
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FAQs for air conditioning projects in Eureka, MO

Most professional HVAC technicians require two to three hours to complete an expansion valve replacement. The timeframe depends on your unit's accessibility and whether additional repairs are needed. The process involves recovering refrigerant, removing the old valve, installing the new component, and recharging the system. Scheduling during less busy seasons may result in more convenient appointment times.

Operating your air conditioner with a malfunctioning expansion valve isn't advisable. Continuing to run the system could potentially damage other components, particularly your compressor, which is significantly more expensive to replace. If you notice performance issues like inconsistent cooling or unusual noises, it's best to have your system inspected before continuing regular use.

Expansion valves don't have a standard replacement schedule, as their longevity depends on system usage, maintenance frequency, and environmental factors. Regular professional maintenance helps identify potential valve issues before they cause system failure. Having your HVAC system serviced annually allows technicians to monitor component condition and recommend preventative replacements when necessary.

Refrigerant leaks require prompt professional attention. If your expansion valve is leaking, you'll likely notice reduced cooling performance and possibly hear hissing sounds near the unit. Addressing leaks quickly prevents further system inefficiency and avoids the environmental impact of released refrigerant. Your HVAC technician will need to repair the leak and recharge the system with the proper refrigerant type and amount.

Because many AC issues present similar symptoms, professional diagnosis is recommended. Problems like inadequate cooling, inconsistent temperatures, or strange noises could indicate expansion valve issues, but might also stem from refrigerant leaks, electrical problems, or airflow restrictions. A qualified HVAC technician has the tools and expertise to accurately identify the root cause and recommend appropriate repairs.

The Eureka, MO homeowners’ guide to air conditioning services

From average costs to expert advice, get all the answers you need to get your job done.