Cleaner Air. Lower Bills. Better Comfort.

Duct Sealing & Sanitizing in Bloomington, IN

Your home’s ductwork does a lot behind the scenes—and if it’s leaky, dirty, or contaminated, your HVAC system and your health could suffer. At Bates Mechanical Heating & Cooling, we help homeowners in Bloomington, Freedom, Spencer, Linton, and Ellettsville restore the hidden backbone of their comfort systems through professional duct sealing and sanitizing services.

Lower Energy Waste

Sealing ducts keeps conditioned air where it belongs—inside your living spaces.

Cleaner Indoor Air

Sanitizing eliminates mold spores, bacteria, and dust hiding in your ducts.

A woman is sitting on a bean bag chair reading a book.

Better Airflow

Properly sealed and cleaned ducts help your system deliver even, efficient air throughout your home.

Fewer allergies and odors

Duct cleaning reduces contaminants that contribute to respiratory irritation and lingering smells.

Duct Sealing

Stop Energy Waste at the Source

Even small leaks in your ductwork can lead to significant energy loss. Our duct sealing service identifies and seals air leaks in your duct system, prevents air from escaping into unconditioned areas (like attics or crawlspaces), helps your HVAC system operate more efficiently, and delivers more consistent airflow throughout your home. If your system seems to run constantly but still can’t keep you comfortable, leaky ducts could be the culprit.


Even small leaks in your ductwork can lead to significant energy loss. Our duct sealing service identifies and seals air leaks in your duct system, prevents air from escaping into unconditioned areas (like attics or crawlspaces), helps your HVAC system operate more efficiently, and delivers more consistent airflow throughout your home. If your system seems to run constantly but still can’t keep you comfortable, leaky ducts could be the culprit.

A plus sign in a circle on a white background.

Duct

Sealing

Stop Energy Waste at the Source

Over time, dust, debris, mold spores, and other contaminants can build up inside your ductwork. We offer professional duct sanitizing that:

A black and white drawing of a wrench on a white background.

Duct

Sanitizing

Breathe Easier at Home
A black check mark on a white background.

Disinfects interior duct surfaces using safe, effective solutions

A black check mark on a white background.

Reduces the spread of allergens and bacteria through your home

A black check mark on a white background.

Improves indoor air quality for allergy- and asthma-sensitive households

A black check mark on a white background.

Keeps your HVAC system cleaner and more efficient

This service is especially valuable for households with pets, recent renovations, or signs of moisture issues.


We’ll assess your duct system and recommend only what’s truly needed. Consider duct sealing or sanitizing if:

A black arrow pointing down in a circle on a white background.

When to Schedule

Duct Services

Know When The Time is Right
A black check mark on a white background.

You notice rooms that are always too hot or too cold

A black check mark on a white background.

Your energy bills have been steadily rising

A black check mark on a white background.

There’s visible dust near vents or musty smells in the air

A black check mark on a white background.

You or your family are experiencing unexplained allergy symptoms

A black check mark on a white background.

It’s been more than 5 years since your ductwork was last inspected

FAQs About Duct Services

  • How do I know if my ducts are leaking?

    Tell-tale signs include high bills, uneven temperatures, or loud airflow. Our technicians can perform a diagnostic inspection.

  • Is duct sanitizing safe?

    Yes—we use professional-grade, non-toxic solutions that are safe for your home and your family, including pets and kids.

  • Do sealed ducts really improve efficiency?

    Absolutely. Sealing leaks helps your system work less to deliver the same comfort—saving you money month after month.

Don’t Let Dirty or Leaky Ducts

Drag Down Your Comfort

Restore clean airflow, reduce energy waste, and breathe easier with duct sealing and sanitizing from Bates Mechanical.