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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

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Chemical Flush for Your Air Conditioner

By AL-DON Indoor Quality Specialists | July 6, 2021

A “chemical flush,” sometimes called a “chemical wash,” is a thorough cleansing technique for your air conditioner (AC).

Ductwork in St. Louis 2017

Leaky Ducts, Leak Money

By AL-DON Indoor Quality Specialists | June 13, 2021

Ductwork is a hidden element that is crucial to your home comfort. Ductwork is the system by which warm or cool air circulates throughout your home. It is essential to have well maintained and cared for ductwork in your home. Most of it is hidden behind walls or in places that are not as frequently…

How to Save Money in St. Louis

How to Save Money on AC This Summer in St. Louis

By AL-DON Indoor Quality Specialists | May 12, 2021

The US Department of Energy says that air conditioning can account for up to 47% of your utility bill. At AL-DON, we take energy efficiency seriously. Here in St. Louis we understand that air conditioning is crucial for comfort during the hot months and our advice may help you save money on your monthly energy…

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