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Fitzhugh, TX sits in the rolling terrain of the Texas Hill Country, where summer temperatures push cooling equipment hard and winter cold snaps demand reliable heat. Homes and light commercial buildings in this area face wide seasonal swings, and that combination places real stress on heating and air conditioning systems. M.B. Kiser Heating and Air Conditioning Co. Inc. brings decades of practical experience to properties in and around Fitzhugh, delivering installation, repair, and maintenance work built to hold up under these conditions.

Serving Fitzhugh and the Surrounding Region

As the oldest Carrier Dealer in Dallas, in continuous operation since 1945, we understand what long-term reliability means for the people who depend on us. Fitzhugh property owners want systems that start when they should, run efficiently through months of heavy demand, and last for years without constant trouble. We approach every job with that expectation in mind, whether we install a complete new system or restore an aging one to full function.

Our work covers residential and light commercial customers, and we serve a wide territory that includes Dallas, University Park, Highland Park, Irving, Farmers Branch & Cockrell Hill, TX. This gives us broad familiarity with the equipment, building types, and comfort challenges common across the region. When you call us about a home or business in Fitzhugh, you reach a company that has handled thousands of similar situations and knows how to plan for the local climate.

Air Conditioning Installation Done Right

A cooling system installation is only as good as the planning behind it. Before we recommend equipment, we evaluate the size of the space, the layout of rooms, insulation quality, window exposure, and existing ductwork. Oversized units short-cycle and waste energy, while undersized units run constantly and never reach comfortable temperatures. We size each system to match the actual load, which produces steady comfort and lower operating costs over the life of the equipment.

We install Carrier equipment, and our long relationship with the brand backs our recommendation. Carrier systems offer high-efficiency ratings, reliable compressors, and refined controls that hold indoor conditions steady. As we like to say, “It’s Wiser to Have Kiser Install Carrier.” Our technicians handle refrigerant charging, electrical connections, condensate management, and airflow balancing so the finished system performs exactly as designed. A properly installed unit protects your investment and reduces the likelihood of early failures.

AC Repair When You Need It

Cooling failures rarely happen at convenient times. A system that quits on the hottest afternoon of the year turns a comfortable home into an uncomfortable one within hours. Our repair process starts with a careful diagnosis rather than a guess. We check refrigerant levels, inspect electrical components, test the compressor and fan motors, examine the thermostat, and look at airflow across the coils. This methodical approach finds the true cause instead of masking a symptom.

Common problems we repair in the Fitzhugh area include:

  • Refrigerant leaks: low charge reduces cooling capacity and strains the compressor, so we locate the leak, repair it, and recharge to the correct level.
  • Failed capacitors and contactors: these small electrical parts wear out and prevent motors from starting, and we replace them with correctly rated components.
  • Frozen evaporator coils: caused by restricted airflow or low refrigerant, this problem needs both a thaw and a fix for the underlying cause.
  • Drainage backups: a clogged condensate line can trigger safety shutoffs or water damage, so we clear the line and confirm proper flow.
  • Thermostat faults: incorrect readings or communication errors cause erratic operation that we correct or replace.

Heating Service Through the Cold Season

While Fitzhugh is known for its heat, winter still brings nights cold enough to require dependable heating. Furnaces and heat pumps need attention before the season arrives, and we service both. Our heating work includes inspecting heat exchangers for cracks, testing ignition systems, checking gas pressure, verifying safety controls, and confirming that airflow reaches every part of the building. A furnace that fails a safety check is a genuine hazard, so we take these inspections seriously.

For heat pump systems, we verify the reversing valve, defrost cycle, and auxiliary heat operation. Heat pumps must switch smoothly between heating and cooling modes, and worn components can interrupt that process. We are certified with Climate Master, which strengthens our ability to service geothermal and water-source heat pump equipment that many efficiency-minded property owners now favor.

Maintenance Contracts That Prevent Problems

Much of our focus rests on maintenance contracts, because regular attention keeps systems running well and catches small issues before they grow expensive. A maintenance visit includes cleaning coils, replacing or cleaning filters, checking refrigerant charge, tightening electrical connections, lubricating moving parts, and testing overall performance. Systems that receive this care run more efficiently, last longer, and break down far less often than neglected ones.

Here is what a maintenance relationship with us typically delivers:

  1. Lower energy costs: clean, well-adjusted equipment uses less power to reach the same comfort level.
  2. Fewer emergency calls: catching worn parts early prevents sudden failures during peak demand.
  3. Longer equipment life: reduced strain extends the useful years of your investment.
  4. Consistent comfort: balanced airflow and correct charge keep every room at the temperature you set.

Support Around the Clock

Comfort emergencies do not wait for business hours, and neither do we. Our operation runs 24/7, and after hours a call center picks up your call and forwards it to our on-call technician and service manager. We will call you back first thing in the morning to arrange service, so you never sit alone with a problem overnight. That level of responsiveness matters when a system fails in extreme weather.

As a family owned and operated business and the oldest AC company in Dallas, M.B. Kiser Heating and Air Conditioning Co. Inc. has served this region since 1945. That history reflects steady, honest work and lasting customer relationships. Property owners in Fitzhugh, TX can rely on us for installation, repair, and maintenance that stand the test of time, backed by experience that few other companies in the area can match.

AC Repair in Fitzhugh, TX | HVAC Service

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Happy MB Kiser customer since 2014. Great company, very dependable and always on time. My A/C bit the dust on Monday, and they sent a tech to fix it right away. A broken A/C in Texas during summer time is as good as a death sentence lol. Luckily these guys are always around. Thank you the MB Kiser team and Jordan in particular. Big thanks to Kristen for expediting the part ordering.

Oleg M.

We have a service contract with them so they come every six months to prepare the furnace and air conditioner. We get a reduced rate for any repairs because of the contract and we never get charged for any overtime. My parents also use them. I would recommend them. They redid our whole system in our old house. We’ve used them for 45 years. One of the guys remembered coming to our family home when I was little.

Elizabeth A.

Living in Texas we learn to appreciate our Air conditioners! I was ready to freak out yesterday when my unit stopped working and I am expecting some family over this weekend for the holidays! I started searching for a reputable air conditioning company in the metroplex. Couple of my friends at work referred me to MB Kiser and I decided to give them a try! I have called their customer service and lady on the phone was very knowledgeable and willing to help, which was a big plus for me.

Amy D.

OVERALL EXPERIENCE WAS 100% POSITIVE.

Kathleen M.

They called ahead of time to let us know they were coming. They were right on time. They checked out our heater. We had just bought the house and couldn’t get the pilot light lit. The tech determined that there was air in the line, so he bled the line and got the pilot light lit. He checked out the heater and told us the heater was fine and didn’t need any more work.

Theresa V.

I have used MB Kiser three times now at two different properties. Kenny and John are the best techs I have come across. This is a company that really puts their customers first which probably explains why they have been around so long.

David W.

Quick response, my AC was out Friday all day and they came out first thing Saturday morning. Jordan answered all my questions, and verified the issue within first 10 minutes. I would highly recommend using them in the future.

Saj J.

Annual maintenance plan is pretty straightforward and a much better value than paying twice a year for the same service at twice the rate. Service manager came out after the first call didn’t fix it, and made sure the unit cooled. Awesome service and friendly people.

Daniel M.

THIS COMPANY DOES BOTH COMMERCIAL AND RESIDENTIAL WORK. HAD A NEW SYSTEM PUT IN AT THE BARBER SHOP. WORKERS WERE VERY PROFESSIONAL AND THE WORK WAS DONE QUICKLY AND CORRECTLY. ALSO HAD THEM COME AND REPLACE A HEATING UNIT AT HOME. SAME GOOD SERVICE AND PRICE WAS COMPARABLE TO OTHER ESTIMATES THAT I GOT.

Rebecca J.

We had our second HVAC system installed by M.B. Kiser today. They are excellent. The installation team arrived at 8:30 and left at 6 with all the work complete, area cleaned up and a great Carrier Infinity system installed. We have two systems in our house. We had the same setup installed last year and it has been flawless. The prices are competitive and the installers and service people are professional, competent and excellent communicators. Highly recommend.

John P.

I have now used MB Kiser for about 12 years. They have always been fast and honest. Recently, I had my AC go out at my office they fixed it fast with a $35 capacitor. The repair person I had out before Kiser tried to sell me an entire hvac system. Kiser also repaired one of my home units at 8pm on a hot evening fast and easy. Much to my amazement they did not even charge for emergency or afterhours. M.B. Kiser is wonderful to work with.

K. B.

They are great. Our downstairs unit went out. They were able to put in the model I wanted. It was a 5 ton horizontal system, and a difficult installation. They had the resources to get it done. They ran into some problems but they charged us what the original bid was. They were also able to fix the upstairs air conditioning. They are very professional and always respectful. They were able to troubleshoot as they went along. If there were any problems, they were able to fix them.

Anna A.

Well we used them twice and both times were happy with the price and work that was done.

Susan M.

Thank you so much for your consideration. I truly appreciate your service to keep my aged system working.

Vincent F.

Whether it’s installation, repair, or maintenance,

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Is your home feeling too hot or too cold? Don’t let the weather control your comfort! Our team of certified HVAC professionals is here to provide top-notch heating and cooling solutions tailored to your needs.

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© 2026 M.B. Kiser Heating and Air Conditioning Co. Inc.
10549 Denton Drive Dallas, TX 75220

Phone: (214) 823-9958
| License #: TACLA1543C

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Fitzhugh, TX