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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

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When do I Need a New Furnace?

By AL-DON Indoor Quality Specialists | December 18, 2021

The average life expectancy of a furnace is 15 to 20 years. The closer your furnace gets to this age range, the more attention you should pay to the warning signs. Start shopping for a replacement before you have an emergency, so that you can make a calm and informed decision. Having a pilot light on your furnace is a good indicator that your furnace is at least 20 years old.

inviting doorway with snow on porch stairs and railing

Is My Furnace Overheating?

By AL-DON Indoor Quality Specialists | November 16, 2021

Just about any electrical appliance has the potential to overheat. Furnaces are no exception. As a homeowner, you need to take precautions to lower the risk of an overheated unit.

Heat Pump Versus Furnace

Heat Pump Versus Furnace

By AL-DON Indoor Quality Specialists | October 26, 2021

Looking to install a new heater in your St. Louis home? Your two most popular choices are a heat pump and a furnace. Each one has advantages and disadvantages when compared to the other.

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