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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

Heat Pump Versus Furnace

Heat Pump Versus Furnace

By AL-DON Indoor Quality Specialists | October 12, 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.

furnace maintenance

5 Reasons to Schedule a Fall Furnace Clean and Check

By AL-DON Indoor Quality Specialists | September 15, 2021

Once the cooler weather hits here in St. Louis, MO, this fall, you are going to want the inside of your home toasty and comfortable. This means turning on your furnace.

HVAC heating and air conditioning units

How Does an Air Conditioner Work?

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

As a homeowner here in Missouri, it’s always a good idea to learn as much as you can about your appliances.

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