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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 home. Candles, book and cup of tea, comfort tips in St. Louis.

Maximum Efficiency and Comfort Tips as Cold Weather Approaches

By AL-DON Indoor Quality Specialists | October 26, 2017

After a long, hot summer, many people welcome the relief that fall weather brings. Kids are back in school, football season is here and most of us are finishing projects around the house that kept getting put off until cooler weather. This also is the time to start thinking about what can be done to…

opened plastic vinyl window on green trees background

Air Cleaners: Clarifying Misconceptions

By AL-DON Indoor Quality Specialists | October 19, 2017

As winter approaches and our homes become our safe haven from the cold, we need to consider our home’s air quality. Being stuck inside can cause allergies to act up even more if the air we breathe is not free form irritants. AL-DON offers a variety of air cleaners to help purify the air and…

Family Inside in Fall in St. Louis

Understanding Humidity in St. Louis

By AL-DON Indoor Quality Specialists | September 19, 2017

Cold winter months bring low humidity levels that most of us only recognize as we feel our skin drying out more frequently and needing chapstick to keep our lips moist. Humidity refers to the amount of water vapor in the air, and it affects our comfort levels, even playing a role in the development and…

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