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Master Plumbing, Heating & Cooling Master Plumbing, Heating & Cooling
$50 OFF Water Heater Repair

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Valid Dec 1, 2025 - Nov 30, 2026

Air Conditioning Service in Marion

Get Real Comfort Out of Your AC System This Summer

Comfort in a Marion summer comes down to more than turning the AC on and hoping for the best. The right system, properly sized and maintained, makes a home feel genuinely comfortable rather than just less hot.

That's what Master Plumbing, Heating & Cooling has been helping homeowners achieve since 1986. Our technicians are fully licensed, extensively trained, and held to a consistent standard on every job. Every visit comes with a satisfaction guarantee and warranties because we want you to feel confident long after we've left.

Let’s get your AC system back on track. (319) 214-5064 or schedule online to book service from a locally owned, veteran-founded team.

Residential AC Services in Marion

Master Plumbing, Heating & Cooling handles the full range of residential air conditioning needs across Marion, from urgent repairs to carefully planned installations. Here's what we offer:

  • AC Repair
  • AC Maintenance
  • AC Installation
  • Air Handlers
  • Ductless Air Conditioning
  • Refrigerant Leak Detection and Recharging

Whether you need a quick repair or a full system replacement, we tailor our air conditioning service to the way homes in Marion are actually built and used. Many houses in the area have a mix of older ductwork and newer additions, and we take those details into account so your system can keep up during stretches of high heat and humidity common in eastern Iowa. 

How We Determine the Right AC System for Your Home

Replacing an AC system isn't just a matter of finding a unit the same size as the one being removed. A system that isn't correctly matched to the home it's cooling will underperform regardless of its efficiency rating on paper. Here's how we approach it:

  • We assess the home before recommending equipment. Square footage, ceiling height, insulation quality, window exposure, and existing ductwork all affect how a system needs to be sized and configured. We look at all of it before making a recommendation.
  • We account for Marion's climate. Iowa summers bring both heat and significant humidity, and a system that handles temperature well but struggles with moisture control will leave a home feeling uncomfortable even at the right temperature. Humidity management is part of what we factor into system selection.
  • We consider what the existing infrastructure can support. In older homes, ductwork, electrical systems, and refrigerant lines may need attention alongside a new installation. We assess what's already there so there are no surprises once the job is underway.
  • We present options across a range of budgets and efficiency levels. We install and service Lennox AC systems, which rank among the most energy-efficient options available, alongside all other major brands. Our goal is to find the system that delivers the best real-world performance for your specific home rather than defaulting to the easiest or most expensive option.
  • We size every installation around today's home, not the previous unit. The system that was installed ten or fifteen years ago may not have been correctly sized to begin with. We start from the home's actual requirements rather than treating the old unit as the benchmark.

FAQs About Our AC Services in Marion

My AC is running, but the house still feels humid and uncomfortable. What's going on?

Humidity control is one of the primary functions of a properly working AC system, and it's often where aging or improperly sized systems fall short. Our technician can assess whether the issue is with the system itself or whether a supplemental dehumidifier would address the problem more effectively.

How do I know if my AC system is the right size for my home? 

We assess sizing as part of every installation and can evaluate an existing system if you suspect it may not be correctly matched to your home.

Do you handle refrigerant in-house? 

Yes, it's handled entirely in-house. Low refrigerant almost always means a leak, and we locate and address the source before recharging the system. Topping off without fixing the leak first just delays the same problem returning.

Is there a fee for the initial visit? 

Yes, there's a diagnostic fee for the initial visit. You'll know the amount before we arrive, and once we've taken a look, you'll have a complete price for the work before we ask you to commit to anything.

What should I do if my AC stops working during a heat stretch? 

Call us as soon as the problem surfaces and we'll work to get someone out to you as quickly as possible. In the meantime, close blinds and curtains on sun-facing windows to reduce heat gain, limit heat-generating appliances where possible, and keep doors closed to concentrate whatever cool air remains in the rooms you're using.

  • Respectful & Tidy

    Our pros treat your home like their own, wearing shoe covers and leaving every work area spotless.

  • Award-Winning Service

    Recognized 5 times by Angie's List for outstanding service, we go above and beyond to deliver exceptional results every time.

  • Transparent, Upfront Pricing

    No surprises, no hourly tricks. You’ll know the cost before we start, so you can make confident decisions.

  • Fast, Same-Day Solutions

    Plumbing and HVAC issues can’t wait. We get you back on track quickly with prompt, same-day service.

Decades of Service, Thousands of Smiles

Hear from the homeowners and businesses who rely on us for expert solutions.
    I highly recommend!
    “I am happy to share that the team at Master Plumbing, Heating & Cooling responded quickly to repair my furnace. The service technicians (Brett & Jordie) were friendly, informative, and fast. They left the furnace room cleaner than they found it.”
    Donald B.
    We feel confident with this team to help us!
    “We had a problem with our HVAC system leaking from the condensate and the blower and Matthew E was the best person for the job! He was professional, quick, and helped us understand what went wrong and got the items replaced in no time! We signed up for the Green Club for regular maintnence.”
    Kendal A.
    I will definitely recommend this company!
    “We had a water softener installed. I called Master Plumbing, Heating, and Cooling at about 8AM and we had a water softener installed by 12:15. Bill was our service technician. He was so very polite and respectful of our home! ( He wore shoe coverings) Bill explained everything extremely well. We bought their Green Club Membership, for a few dollars more, which will cover plumbing, heating, and cooling. Our systems are well over 25 years old, so over the long run this membership will save us a lot, Thank you Bill and Master Plumbing, Heating & Cooling.”
    Diana P.
    Would definitely recommend him and Master Plumbing.
    “John came out to do my annual plumbing inspection; caught and fixed a few things (had pictures of discrepancies), cleaned out my tankless hot water heater at no charge.”
    Eric F.
    I would 100% recommend Master Plumbing Heating and Cooling
    “I called in the AM regarding our central air not working and spoke with Taylor who was so friendly and let me know they had an appointment in the afternoon. Maddie then kept in contact with me as to when Madison & Jordan would arrive. Madison and Jordan were very friendly and got to work right away and had the unit working quickly. Everything went smoothly and I cant say enough about every person I was in contact with. Such a great experience! Thank you all so much!”
    Denise E.
    Bill was outstanding, friendly, and very accommodating!
    “Bill came to our home to do a full plumbing inspection. Bill was very thorough and showed attention to detail. We noted to technician that we had a concern with our shower drain. Bill was right on it! He recommended we consider using a snake on the drain. Bill adjust the price based on the fact that it was an easy job to complete. He also tested our water and reviewed the report with us. Bill was outstanding, friendly, and very accommodating!”
    Tana L.
    Very happy with my new water heater and installation!!
    “John provided prompt and excellent service as always and I appreciate the follow-up to see if I have any questions. Very happy with my new water heater and installation!! Thanks again to Maddie who is always courteous and great with scheduling!”
    Lisa K.
    I would shout from the mountaintop my 100% recommendation for Master Plumbing!
    “John was amazing!! He was courteous, kind, prompt, respectful and very knowledgeable! If I could give him 10 stars or more, I definitely would!! He took care of our "emergency" , took time to explain everything to us and even confirmed for us and appliance maintenance provider to contact. I would shout from the mountaintop my 100% recommendation for Master Plumbing and definitely for John!!”
    Sue P.
    10/10 recommend this place!
    “Bill was outstanding! Very fast, no frills or upsells 10/10 recommend this place! Join the membership too- pays for itself in one visit!”
    Shawn G.