AC Repair, HVAC System Design & Home Performance for the Chattanooga Area.
Measure first. Then fix. Real data collection, then repair, design, or installation. We make your home work for you.
Serving Chattanooga, Soddy Daisy & the Tennessee Valley
- TN Mechanical Contractor (CMC-C) #86044
- Chattanooga Master Mechanical License #LMM-1295
- NCI Certified #110713
- NATE Certified #3068060
- EPA 608 Universal
Certified. Educated. Experienced.
Veteran-Owned · Licensed · Insured
Our Reviews
“Russell is the best! He got my unit back up and running. If you have any HVAC issues give him a call, extremely knowledgeable and honest man.”
A.W.September 2026 · via Google “Very knowledgeable. Explained everything so well. The infographics that are available on their software is exceptional. Very pleased with their service and highly recommend.”
Sh.W.August 2026 · via Google “Detail oriented is the first thing that comes to mind. If you’re looking for an HVAC company that actually uses data, measurements, and diagnostic equipment to identify the root cause of an issue, this is the company to call…”
J.F.August 2026 · via Google “Would definitely recommend. Extremely methodical in approach and have good confidence that they will get to the root cause of problems and fix. Definitely trust their work”
J.B.August 2026 · via Google “I can only fully recommend SystemIQ and Russell. I've never had an HVAC technician be so thorough and informative. He researched our system, honestly provided assessments and offered many different options…”
Z.S.August 2026 · via Google “I was impressed with the attention to detail. Very thorough throughout the entire evaluation process. Professional service to say the least. Highly recommend this family”
R.G.August 2026 · via Google “Unbelievably professional! Fantastic communication and documentation. We had a system evaluation done and they are incredibly thorough. Unlike most HVAC contractors in this area, they have dedicated and calibrated diagnostic equipment…”
C.R.August 2026 · via Google “Very knowledgeable in all things HVAC. Made us aware of things before fixing them so there wasn’t unexpected cost. Very professional and very respectful. Have hired for more work on our home to make it better functioning for the hot summers and cold winters…”
St.W.July 2026 · via Google “Russell did an amazing job fixing the damage to my HVAC return box. I highly recommend him and this company.”
R.M.June 2026 · via Google “SystemIQ HVAC was on-time, courteous, and professional throughout my experience. They quickly found the issue and resolved it without trying to sell additional services that weren’t needed. If you have HVAC needs, do yourself a favor and call them first.”
J.V.May 2026 · via Google
Sound familiar?
Does any of this sound like your house?
Every one of these has a cause you can measure. Guessing at them is how people end up paying for the same repair twice.
Reach Out
Have a question? Message us.
Not ready to book a visit but you need an answer? Send us a message. It comes straight to us as a text. During business hours (Mon–Fri 8–6, Sat 8–noon) you’ll hear back fast. After hours, first thing the next morning.
- Arrives as a text, not buried in an inbox
- Messages reach us directly, not a queue
- No call center, no ticket queue
Truly urgent? No cool, no heat?
Skip the form. (423) 401-0999
The Standard
We find it on the first visit and fix it once.
We measure static pressure, airflow, refrigerant state, and combustion, as the system and the season call for it. Those numbers tell us what is actually wrong with the system before anybody starts replacing parts.
Diagnostic First
We measure airflow, static pressure, refrigerant state, and combustion before naming a fix.
Whole-Home Systems
Equipment, ducts, envelope, controls, and the people living in the house. We diagnose all of it, not just the part that quit.
Verified Installs
Manual J load calc, ACCA Standard 5 commissioning, written report before invoice.
Documented Results
We record every measurement and write down the reason for every recommendation. You get to see the work.
Standards we hold ourselves to
We work to published standards.
You don't have to take our word for any of it. We measure every job against the published standards and put the numbers in writing.
Manual J on every replacement
We size the equipment to the house itself, not to whatever unit happens to be sitting there now.
ACCA Standard 5 commissioning
Every installation verified against the published industry standard before we close the job.
Static pressure & airflow documented
Every service call gets the readings put in writing, so nobody has to guess at what the system is doing.
EPA-certified refrigerant handling
Refrigerant gets recovered, weighed, and logged. We don't vent it into the yard.
What we work on
Every job starts with a measurement.
What we hand you
This is what a measurement actually looks like.
Every evaluation ends in a written Home Comfort Report. It shows what we measured, what the reading should have been, and what to do about it in priority order. Here are three readings off one of them.
Total external static pressure
0.82″ wc
Target ≤ 0.50″ wc
HighDelivered airflow (3-ton system)
880 CFM
Target ≈ 1,200 CFM
LowTemperature split, return to supply
23°F
Target 18–20°F
HighReadings from a representative example home, not a customer job.
First we measure. Then we fix.
A technician without instruments isn’t diagnosing. They’re guessing.
Most companies replace parts and hope it holds. We show up with manometers, manifold gauges, and combustion analyzers, because the equipment is only half the job. The duct system around it is the other half.
Where we work
Chattanooga & the Tennessee Valley.
Diagnostic-first air conditioning service across 16 towns in the Tennessee Valley. Locally based, and on the road every day.
Approximate coverage area · Call to confirm your address
Comfort Club
Membership built on measurement.
One or two measured performance visits a year, with priority dispatch and documented system health. No upsell games. You get the numbers, the work, and the report on every visit.
- Measured performance visits with readings logged
- Priority emergency dispatch
- Member pricing on repairs and diagnostics
- Written system health report each visit
Financing available on jobs over $500. Pay over time on repairs, retrofits, and installs over $500.
Common questions
Questions homeowners ask before they call.
- Isn’t a paid diagnostic just a different sales pitch?
- The incentive runs the other way. We get paid for the diagnosis, not for whatever you buy afterward, and the findings are yours in writing either way. If nothing is worth fixing yet, that's what they'll say.
- Will you push a replacement before fixing it?
- No. If the equipment has years left in it, a documented repair is usually the right call and we'll tell you so. When replacement really is the better move, we run a Manual J load calculation and show you those numbers before you decide anything.
- Why won’t anyone give me a repair price over the phone?
- The price depends on what's actually wrong, and we can't find that over the phone. A dozen different failures all show up as warm air coming out of the vents. Any repair price quoted before somebody looks at the system is either a guess or a teaser rate that changes once we're in your driveway. What we can tell you now is the price of finding out: the service call is $99 within 25 road miles of Soddy Daisy, we diagnose with instruments, and you get a written price to fix before any repair starts.
- Are you licensed and insured?
- TN CMC-C Contractor License #86044, Chattanooga Master Mechanical License #LMM-1295, bonded, insured, EPA Section 608 certified, and NATE certified. Veteran-owned.
- Do you finance new systems?
- Yes, on jobs over $500. We don't lead with financing, but it's there if replacement is the right move and you'd rather spread the payment out.
Start with a measurement
Comfort.Done Right.
A 1 to 2 hour evaluation gives you a documented picture of how your air conditioning system actually performs, and what it will take to fix it.
And once it’s fixed, the Comfort Club keeps it that way, measured visit after visit.