You can't get more professional than this. Called first thing on a Saturday morning. He told me he could be there in a hour and a half and he showed up right on time. He was very knowledgeable and able to diagnose the problem quickly and took the time to explain how it worked. He even gave me some tips on some preventative maintenance while he was working. All work was completed quickly and at a great price.
We Move Heat.
HVAC Service Across Aiken County
A/C ServiceMaster is Paul Diggs — an owner-operator who has been in heating and air since 1989, and who trains the technicians coming up behind him. He finds the actual fault, tells you what it will cost, and explains what he did before he leaves.
North Augusta · Aiken · Aiken County, SC
Tap to Call Now- What the system is doing — and for how long
- Whether it is heating, cooling, or both
- Roughly how old the system is, if you know
- Your address, so travel can be worked out
No call centre and no dispatcher. If you get voicemail he is under a house or on a roof — leave a number and he calls back.
*Got a Quote You Are Not Sure About?
Get a Second Opinion, Free.
If another company has handed you a written quote — or you have already paid for work and something still is not right — Paul will come out and look at the system himself at no charge, and tell you straight whether the work is needed and whether the price is fair.
* Bring the written quote or the receipt. Within the service area, with no charge and no obligation — whether you end up using him or not.
Thirty-Seven Years of Finding the Actual Fault
Paul Diggs has been in heating and air since 1989. A/C ServiceMaster is an owner-operator business, which means the hands on your system are his — and he runs it out of North Augusta, South Carolina, covering Aiken County and the communities around it.
He is also an instructor. Paul trains other service technicians in the trade, which is a useful thing to know about the person working on your system: explaining a fault clearly is not something he does for your benefit on the day, it is what he does for a living.
- Diagnosis before parts — pressures, airflow and electrical get read first
- Repair before replace, and he will tell you when a repair has stopped making sense
- Plain-language pricing — the number comes before the wrench
- Cash and cards, financing available, and a 10% senior discount
Rated 4.71 on Google
Thirty-seven years of people saying the same three things: he turns up, he finds it, and he tells you what he found.
Paul was at my house within an hour of my call. He got right to work identifying the issues, had the available repair parts and fixed on the spot. I have been looking for a honest AC company since moving here 9 years ago and I have finally found one! Will definitely use again when issues arise. Thanks Paul!
He was honest where others could have said that there was more to fixing my unit than there was. Some of the best customer service I've had I would highly recommend him to others, and use his services again. Thank you
I highly recommend this business. Paul is a local businessman and treated us extremely well. He was prompt, knowledgeable, very respectful and expertly professional. He was a pleasure to speak with and also gave us helpful tips to improve overall maintenance as to avoid future service calls. Thank you from Trophies Unlimited!
Great service, only service that answers the phone at 7:30 in the morning and can give an estimate. Great price too, thanks again!
Paul was quick to respond, and very knowledgeable. He was very reasonable on price and was able to fix my family's ac unit. I highly recommend him.
Heating and Cooling Work, Start to Finish
Homes, small offices, shops and churches across North Augusta, Aiken and the rest of Aiken County. If it moves heat, it is on the list.

A/C Repair & Diagnostics
Not cooling, running non-stop, short cycling, icing over, tripping the breaker, or blowing warm. The fault gets found before anything gets replaced.
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Heating & Heat Pumps
Heat pumps, gas furnaces, air handlers and strip heat. Defrost faults, weak heat, reversing-valve problems and systems stuck on emergency heat.
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Maintenance & Tune-Ups
Coil cleaning, condensate drain service, filter changes, refrigerant charge verification, capacitor and contactor checks — before the first hot week finds the weak part.
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System Replacement
When a repair stops making financial sense, you get told so plainly. Replacements are sized for the house, not for the invoice. Financing available.
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Ductless Mini-Splits
A specialty. Ductless systems for additions, garages, shops, sunrooms and any room the ductwork never reached properly — plus service on the ones already installed.
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Light Commercial
Small offices, retail spaces, shops and churches. Package units, rooftop units and split systems kept running without a service-contract runaround.
Call about thisJobs Around Aiken County
Every photograph below is Paul’s own work — condensers, package units, ductless heads, furnaces and duct work, photographed on the job.
Something on this list look like your system? Call (803) 661-3537
Your Air Conditioner Does Not Make Cold Air
It moves heat. That is the entire job, it is where the name comes from, and once you know it most of what goes wrong stops being mysterious.
- 1In summer, it moves heat out.
Refrigerant picks up heat from the air inside your house, carries it outside, and dumps it out of the outdoor unit. The cold is just what is left behind.
- 2In winter, a heat pump runs it backwards.
The same cycle reverses. Even on a cold day there is heat in the outside air, and the system pulls it in. That is why a heat pump costs less to run than strip heat.
- 3So a breakdown is one of three things.
The heat stopped moving because of refrigerant, because of airflow, or because of electrical. Working out which one before any parts get replaced is the whole job.
A Hands-On HVAC Training Lab in Aiken County Coming Soon
Not a lecture hall and not a slide deck. Real equipment on the bench, real faults put into it, and gauges in your hands until reading them is automatic.
- Live systems you can charge, fault and troubleshoot — not diagrams of them
- The fundamentals first: the refrigeration cycle, airflow, and electrical — in that order
- Taught by somebody still doing the work, not somebody who left it twenty years ago
- Much of the lab equipment comes straight off real service work in South Carolina
No dates, no tuition and no enrolment yet — the lab is being built. Call or email and your name goes on the list, and you will hear about it before it is announced anywhere else.
Frequently Asked Questions
Questions worth asking any HVAC company in Aiken County.
What areas do you cover?
My system is not cooling. Anything to check before I call?
Do you work on heat pumps as well as gas furnaces?
Is the free second opinion really free?
Will you tell me if a repair is not worth doing?
How can I pay, and is there financing?
Do you take light commercial work?
Are you running HVAC training classes yet? Coming Soon
Across Aiken County
Based at 356A Edgefield Road in North Augusta, covering Aiken County and the surrounding South Carolina communities.
North Augusta, SCAiken County — home base
Aiken, SCAiken County
Graniteville, SCAiken County
Beech Island, SCAiken County
- Belvedere
- Clearwater
- Langley
- Bath
- Warrenville
- Burnettown
- Gloverville
- Jackson
- New Ellenton
- Montmorenci
- Windsor
- Vaucluse
- Trenton
- Johnston
- Edgefield
Not sure whether you are in range? Call and ask — if it is close, it is probably a yes.
Hot House? Cold House? Strange Noise?
Call and describe what it is doing. If it can be sorted out over the phone, you will be told that instead of being sold a service call.