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Indoor Air Quality
Humidity, Filtration, and Air Cleaning

Air Purification in Midland

Whole-Home Purification Backed by Service Since 1979

We install whole-home air purification equipment, including air scrubber technology that connects directly to your existing heating and cooling system. Unlike portable room purifiers that address a single space, these systems treat air as it circulates throughout your home and neutralize contaminants in the air and on surfaces.

All Seasons Heating and Cooling has served families across the Great Lakes Bay Region since 1979. Founded by Jeff and Gerri Kohtz and now run by their sons, Paul and Mark Kohtz, our family-owned company provides heating, cooling, indoor air quality, and water heater services.

Call (989) 710-9390 to schedule a free assessment and learn whether whole-home purification is right for your Midland home.

Clear Recommendations, Upfront Pricing, & Verifiable Credentials

We base our recommendations on conditions inside your home, not a standard equipment package. Before any work begins, we explain the proposed system, installation requirements, and full price. You’ll know what to expect without hidden fees or pressure to commit.

Our service standards include:

  • Verified Credentials: We’re fully licensed and insured.
  • Free Estimates: We provide a no-obligation estimate before you approve an installation.
  • Available Financing: We explain the numbers and how the payments fit your budget before you commit.
  • Satisfaction Guarantee: If something isn’t right with our work, we fix it.
  • Weekly Training: Our technicians train every week on current equipment and installation techniques.

Indoor Air Quality

  • $25 OFF Furnace Tune-Up Expires at the end of the month. Cannot be combined with other offers.

Neighbors Talking to Neighbors

More than 1,500 Google reviews. Real jobs, real homes, real feedback from across the region.
    "All Seasons has great employees!"
    Trenton was great. I appreciate how he took the time to explain everything to me about my furnace. Trenton has great customer service skills & listens to what my concerns were.
    Penny H.
    "All Seasons always on point."
    Communication is proactive and clear. Crews are thorough, professional, and nice to work with.
    Stephen W.
    "Great job, thorough, and explained everything"
    Caleb did a great job and was very thorough and explained everything in detail with me.
    Jim M.
    "Friendly, courteous, and professional"
    Alex arrived on time, friendly, courteous, professional — overall happy disposition.
    Jim B.
    "Very professional. Thank you."
    I am very happy with his explanation of everything he did and taking time to check every part to make sure it is working the right way.
    margaret j.
    "All Seasons is like family!"
    Marc kept me posted on everything he was doing and what needed to be done. All Seasons is like family!
    deb

    The Way HVAC  Service Should Feel

    Honest pricing, clean work, and a team that stands behind every job. This is what we show up to deliver every time.

    • Fully Licensed & Insured

      Every technician is fully certified and insured, so you can trust the work and the people doing it.

    • 100% Satisfaction Guarantee

      We don't consider the job done until you're completely happy with the results. That's our promise.

    • Clean House Guarantee

      We wear shoe covers, use protective mats, and clean up before we leave. Your home stays yours.

    • Upfront Pricing

      No surprise bills. You'll always know the cost before any work begins - straightforward and honest.

    • Maintenance Plans

      Our Warrior Program and All Seasons Club Plan includes priority scheduling, a full 21-point tune-up, discounts on repairs, and more. 

    • Family-Owned Since 1979

      Two generations of the Kohtz family have been keeping Midland homes comfortable. That kind of history means experience you can actually count on.

    How Air Scrubber Technology Treats Indoor Contaminants

    Air scrubber technology attaches to your HVAC equipment and works as conditioned air moves through the ductwork. Rather than relying only on a filter to capture particles, this active process is designed to neutralize contaminants in the air and on household surfaces.

    Indoor pollutants may include dust, pollen, pet dander, mold spores, and volatile organic compounds, commonly called VOCs. These gases can come from cleaners, paints, furnishings, and other household products. As the HVAC system runs, pollutants can circulate through multiple rooms.

    Homes with pets, allergy concerns, asthma, or recurring dust may benefit from higher-performance filtration, supplemental purification, or a combination suited to the existing system. We assess the home before recommending equipment because filtration and active purification address different concerns.

    Signs Your Home’s Air May Need Attention

    No single symptom proves that you need purification equipment. However, recurring problems that continue despite normal cleaning may warrant a closer look at airflow, HVAC performance, and possible contaminant sources.

    Common reasons Midland homeowners request an air quality assessment include:

    • Dust that quickly returns to furniture and other surfaces.
    • Allergy or asthma symptoms that become more noticeable indoors.
    • Pet dander circulating through multiple rooms.
    • Household odors that linger instead of clearing.
    • Respiratory sensitivities among family members.

    What to Expect During Your Walkthrough & Installation

    Every recommendation starts with a full walkthrough of your home. We check airflow patterns, evaluate current HVAC performance, and inspect the proposed installation area. This allows us to identify compatible options instead of recommending a product before we’ve seen the system.

    Our technicians explain what they’re checking and why, then review the recommended equipment and installation plan with you. We also answer questions about how the system operates and what you can expect once it’s connected to your HVAC equipment.

    During installation, we protect the surrounding space and keep you informed about the work. Once the job is complete, we remove debris, check the installation, and leave the area clean and free of hazards.

    Maintaining Your HVAC & Indoor Air Quality Equipment

    A whole-home purifier works alongside your heating and cooling equipment, while filtration and humidity control address other air quality needs. During the walkthrough, we can explain these differences and determine whether purification, a filtration upgrade, humidity control, or a combination makes sense for your home.

    Our Service Club Plan and Club Plus Plan include routine furnace and air conditioner tune-ups. These visits provide an opportunity to identify developing HVAC problems before they become more expensive repairs. When a repair is needed, our parts-stocked trucks carry common components to reduce delays and unnecessary return trips.

    Schedule a Free Air Purification Estimate in Midland

    We can evaluate your home’s airflow, HVAC performance, and available installation space before recommending a system. You’ll receive a free, no-obligation estimate with clear pricing, and financing is available without complicated hurdles.

    Call (989) 710-9390 to schedule your air purification estimate with All Seasons Heating and Cooling.

    Call (989) 710-9390 for a free estimate. We'll give you the number before we touch anything.

    Map of service areas
    Top-Rated Heating & Cooling Specialists in the Great Lakes Bay Area
    • Auburn
    • Bay City
    • Beaverton
    • Coleman
    • Edenville
    • Essexville
    • Freeland
    • Hemlock
    • Hope
    • Kawkawlin
    • Linwood
    • Rhodes
    • Saginaw
    • Sanford

    Let's Talk
    About Your Home Comfort Needs

    We return calls promptly and explain everything before we start.
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