Krugerville Aubrey Pilot Point North DFW
Air Conditioning Maintenance
Catch It in April, Not in August
Spring Tune-Ups
The Visit That Prevents The August Call
Nearly every no-cool emergency we run in August was visible in April. A capacitor already reading below tolerance, a condenser coil packed with cottonwood, a condensate line half full of sludge. None of those announce themselves while the weather is mild, and all of them fail on the hottest day of the year because that is when the system is working hardest.
HMS Heating & Air Conditioning services air conditioners across Denton County, ideally in spring before the first serious heat. A real tune-up is a measured one: refrigerant pressures, temperature split, capacitor values, amp draw, and static pressure. If something is out of spec you get the reading and the price before any repair. If it all checks out, we say so and leave.
Choose HMS
Built on Honesty, Since 2015
HMS Heating & Air Conditioning was founded by Gary Hays, a North Texas native who served in the Marine Corps as an aviation electrician.
He earned his HVAC license in 2015 and built the company on a simple standard: explain the problem, lay out your options with prices, and only then pick up a tool. That's how we handle every air conditioning tune-up across Denton County, and it's why so many of our customers come from referrals and stay for good.
And if it turns out you don't need the expensive fix, we'll tell you that too. Honesty, integrity, and a reasonable price have been the standard here from day one.
We Service and Repair All Major HVAC Brands
Our Process
What a Tune-Up Actually Involves
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Start at the Control
We confirm the thermostat calls correctly and the system responds before opening any panels.
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Take the Readings
Pressures, superheat and subcooling, and temperature split across the coil. These numbers reveal a charge or airflow problem long before you feel it.
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Electrical Checks
Capacitor values, contactor condition, and compressor amp draw. A capacitor drifting out of tolerance is the cheapest failure to catch early.
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Clean the Coils
A coil packed with grass clippings and cottonwood makes the system run hot and work harder for less cooling.
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Airflow and Drainage
Filter, return sizing, blower performance, and the condensate line. A blocked drain is what puts water through a ceiling.
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Report the Findings
What is fine, what is drifting, and what needs attention now with a price. Nothing gets repaired without your approval.
Why Bother
What a Spring Visit Buys You
Fewer emergency calls. The parts that fail in August are usually measurable in April. Catching them on a scheduled visit costs a fraction of an after hours call.
Lower running cost. A dirty coil and a restricted filter both force the system to run longer for the same cooling, and that shows up on every summer bill.
Condensate protection. A clogged drain line is how a routine summer turns into a ceiling repair. Flushing it takes minutes on a maintenance visit.
A longer service life. Equipment running clean and within spec lasts longer. Most systems that die early were never serviced.
Warranty protection. Manufacturer warranties generally expect documented annual service. Skipping it can void coverage exactly when you need it.
What to Expect
What the Tune-Up Covers
Your Home,
Protected
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Performance Measurements
Pressures, superheat, subcooling, and temperature split recorded against spec rather than eyeballed.
Book a Tune-Up -
Electrical Components
Capacitors, contactors, and amp draw checked, since a drifting capacitor is the cheapest failure to catch early.
Book a Tune-Up -
Coil Cleaning
Condenser and evaporator coils cleared so the system can actually reject the heat it collects.
Book a Tune-Up -
Condensate Service
Drain line flushed and the float switch tested, which is what stands between you and a water damaged ceiling.
Book a Tune-Up -
Airflow and Filtration
Filter condition and static pressure, because most frozen coil calls start as an airflow restriction.
Explore Airflow Diagnostics -
Honest Condition Report
A plain account of what is fine and what is not. A tune-up is not a sales call.
Explore AC Repair
Customer Reviews
Trusted by Homeowners Across Denton County
"HMS is literally the best heating and air company you're ever going to find. We've been using them for years now and they have never let us down!!!"
"We woke up to a freezing house today because our unit's fan wasn't turning on. We called HMS, and Michelle was so kind on the phone. She quickly dispatched a technician, who arrived within an hour. They identified the issue right away…"
"These guys were on time and made things happen during the ice storm. Stayed till the job was done and restored my heat. I highly recommend!"
"Andrew and Nate were very professional, honest, & thorough.. They took their time making sure they diagnosed the problem correctly, within a few hours our heating system was running.."
"I had been with a different HVAC company for several years and they were going to charge me thousands of dollars to repair my heating unit. I wanted a second opinion, so I contacted HMS. Gary Hays was incredibly polite and professional…"
"I had an urgent need for my system to be checked due to concerns of carbon monoxide. They were at my house within 30 minutes. I was so grateful they were there when I needed them!"
"Top notch service! Andrew took the service call dispute awful weather conditions. He diagnosed the problem and gave us the solution. 10/10 would recommend this company. I'll definitely call them next time I have an issue."
"HMS deserves every one of these 5 star reviews! Andrew and Nate were super friendly, quick and easy to work with. They found the issue didn't push any extra products but did present all my options. I'll be calling them from now…"
"Very prompt and reliable. I appreciate the communication from the first contact through completion of the job. Andrew was very respectful, honest, knowledgeable, and efficient. Highly recommend!"
"Service techs were on-site within three hours of my call for assistance. The repair price was in line with regional standards, and the technicians were very helpful and nice to deal with. Would recommend this HVAC company for systems and repair."
"They did an amazing job with answering my call right before closing, coming out within 2 hours, and fixing my AC all in one night! Super professional, kind, and honest about what work needs to be done! Highly recommend for anyone!"
"Great company. Highly recommend. Gary and Andrew have helped us out in a pinch several times. They are fairly priced, prompt, don't push extras, and have great communication."
Common Questions
AC Maintenance Questions, Answered
When should I schedule AC maintenance?
Spring, before the first stretch of real heat. Once August arrives everyone is calling at once and the parts that fail are the ones that could have been caught months earlier.
What makes a real tune-up different from a cheap one?
Measurements. Refrigerant pressures, superheat and subcooling, temperature split, capacitor values, amp draw, and static pressure, all compared against spec. If nobody put a gauge or a meter on the system, it was a visual check.
Do I need maintenance if the system is working fine?
That is the point of it. Maintenance is not for fixing a broken system, it is for finding the capacitor drifting out of tolerance or the drain line filling with sludge before either strands you in August.
Why does my drain line keep clogging?
Humid air produces a lot of condensate, and that water carries dust and grows algae in the line. North Texas summers make it worse. An annual flush during maintenance prevents the overflow that ends up on a ceiling.
Should I have both systems serviced in a two system home?
Yes, and it is worth doing together. The upstairs system in a Texas attic works considerably harder than the downstairs one, so it tends to be the one with a developing problem.
Do you service systems you did not install?
Yes, and most of them are. We work on every major brand no matter who installed it.