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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.

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Our Services


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

Our Most Recent Articles

Cozy scandinavian stlye living room with home entertainment center.

How to Eliminate Dust in My Home

By AL-DON Indoor Quality Specialists | June 17, 2022

You can substantially reduce your home’s dust levels by following some of these recommendations.

HVAC technician talking to a customer about her AC's SEER

What Does SEER Mean?

By AL-DON Indoor Quality Specialists | May 6, 2022

When it comes to your air conditioner, a common term used in the HVAC business that you’re likely to see everywhere is your air conditioner’s SEER. But what exactly is SEER?

Technician taking a cover plate off an air conditioner condenser.

Why Do I Need AC Maintenance Now?

By AL-DON Indoor Quality Specialists | April 14, 2022

An air conditioner (AC), just like a car, needs regular maintenance and service to run efficiently. At AL-DON, we recommend getting your air conditioning unit serviced and cleaned at least once a year. The optimum time is in the spring to ensure your system will run with the most efficiency during the hottest summer months. You need to be able to rely on your air conditioner for your comfort here in St. Louis and the nearby communities.

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