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Heating

Cold weather isn’t just uncomfortable, it can also be dangerous. Keep your home safe and warm with equipment, maintenance, and repair service from the experts at AL-DON.

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Cooling

It’s great to get outside and enjoy the warm weather, but when it’s time to relax indoors be sure your home stays cool with equipment and service from AL-DON.

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Indoor Air Quality

People spend more time indoors than they do outdoors. Yet indoor air quality can be two to five times more polluted than outdoor air. AL-DON can improve your home's air quality!

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Heating

Cold weather isn’t just uncomfortable, it can also be dangerous. Keep your home safe and warm with equipment, maintenance and repair service from the experts at AL-DON.

air_conditioner_2050x700

Cooling

It’s great to get outside and enjoy the warm weather, but when it’s time to relax indoors be sure your home stays cool with equipment and service from AL-DON.

replacement clean air filter for heating/cooling unit

Indoor Air Quality

People spend more time indoors than they do outdoors. Yet indoor air quality can be 2-5 times more polluted than outdoor air. AL-DON can improve your home's air quality!

Your home should be the place where you can relax and where you can be safe and comfortable with the people you love.

Why not treat your home with the same love and care you would treat your family? You wouldn’t hire a doctor you don’t know; therefore, why would you hire an HVAC company you don’t know?

AL-DON is a company built on relationships––relationships with each other and relationships with our customers. We will treat your home like family. We take care of you the way we take care of ourselves: with honesty, experience, and love. From the dog days of summer to the coldest winter night, AL-DON has you covered. Call the company you trust.

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Maintenance

Protect your investment with regular maintenance from the professionals at AL-DON. Maintenance not only keeps your equipment running efficiently, it can even extend its lifetime.

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Our Newsletter

Stay up to date with the latest news from AL-DON and the HVAC industry.

Click here to view our newsletter.

Our Services


We proudly offer full service, from installation to repair or replacement of the following:

Our Most Recent Articles

Technicians working on an AC Unit St. Louis

3 Signs You May Need a New AC Unit

By AL-DON Indoor Quality Specialists | April 23, 2021

Air conditioning is crucial for comfort in your daily life here in St. Louis. A well maintained AC unit, with yearly inspections and monthly filter changes, can last up to 10 or 15 years. So how do you know if you need repairs for your unit or if you need a replacement? Age How old…

AC Maintenance in Missouri

The Importance of AC Maintenance

By AL-DON Indoor Quality Specialists | March 21, 2021

When the temperatures in Missouri head to the top of the thermometer, it’s not the time for your air conditioner to be on the blink. Regular annual maintenance on your AC will go a long way in preventing that situation from happening. Just as your car requires regular maintenance to keep running smoothly and efficiently,…

Calm serene woman resting sitting on couch in modern living room closed her eyes breath fresh humidified air. Fatigue relief repose, boost inner balance and mindfulness, meditation practice concept


What Indoor Air Quality Accessories Can Help Keep Me Healthy?

By AL-DON Indoor Quality Specialists | November 29, 2020

According to the Centers for Disease Control and Prevention (CDC), the novel coronavirus disease 2019—also known as COVID-19—can cause mild to severe respiratory illness when an individual is exposed to the virus. Even before the outbreak, adults on average spent nearly all their time indoors at work or at home. In fact, the US Environmental…

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