AC Repair, Replacement & Maintenance
The worst thing that can happen during the summer is your air conditioner unexpectedly breaking down. Don’t get stuck in 90-degree weather and high humidity with a broken AC! Get immediate help when you call the experts at MasterTech Plumbing, Heating and Cooling.
We provide a full range of air conditioning services in Columbia, MO and the surrounding Mid-Missouri area:
- Repairs
- Installations and replacements
- Maintenance and tune-ups

Quality AC Services in Columbia, MO
The MasterTech difference:
We understand the frustration of calling an HVAC contractor for help, only to be told you need to wait several days to schedule an appointment to repair your air conditioning unit. This just isn’t acceptable. Contact the team at MasterTech for the quality service you deserve.
- A staff member of MasterTech will answer your call -- not an answering service.
- You will be given a fixed price before any work begins—no surprises!
- We carry more than 5,000 parts in our mobile warehouse, so most jobs can be completed in one visit.
- Issues are resolved following a proven six-step approach that uncovers all the issues causing your cooling problem.
Work With Columbia’s Top
Plumbers and HVAC Experts
Whether you need your air conditioner repaired, a new furnance installed, or your drains cleared, MasterTech Plumbing, Heating and Cooling is happy to help.
Work With Columbia’s Top
Plumbers and HVAC Experts
Whether you need your air conditioner repaired, a new furnance installed, or your drains cleaned, MasterTech Plumbing, Heating and Cooling is happy to help.
Common Air Conditioning Issues
Signs of AC failure include:
- Strange noises or rumbling during start-up or mid-use
- The AC unit distributes warm air rather than cold air
- The fan is not rotating
- A puddle is forming around the unit
- The AC is constantly running or fails to cool appropriately
Your heating system or air conditioner can stop working when you least expect it. And we understand just how stressful that can be. It’s why we’re always available to help around the clock.
Causes and Repair Options
A wiring problem can cause your AC to stop working. Our experts will inspect your equipment and address any wiring or circuit breaker issues.
These can become damaged or worn over time (similar to tires wearing out on a car). This is usually indicated by a squealing noise. Our technicians can check for this during routine AC maintenance.
Do you hear hissing noises or notice foul smells coming from your AC? Chances are there’s a refrigerant leak. Avoid adding refrigerant on your own; an HVAC professional will know the appropriate amount to get your unit working at optimal levels again.
This is often caused by poor circulation or lack of maintenance. You will know if your evaporator coil is frozen by the warm air leaving your unit.
Your AC unit’s motor or compressor can wear out over time. After a careful inspection, we will carry out repairs or replace the defective parts.
Customer Reviews
Timely AC Replacement Can Reduce Maintenance Costs
The decision to replace your air conditioner isn’t always easy. It’s a significant investment. This is why we always do our best to provide our customers with more cost-effective repairs when possible.
However, if your older AC unit is on its last legs and showing signs of failure, replacing it will offer more long-term advantages. A new air conditioner can help you enjoy lower energy bills, provide superior airflow, and leave you with greater peace of mind.
Our Real Time Service Area
Local Reviews
professional service
Julie - Columbia, MO 65202
the two plumbers who worked on several problems at my house were both professional and personable.
ColumbiaMO65202 38.98-92.2925



Our go-to resource
Paula - Columbia, MO 65202
Josh is top-notch. Whenever we have a plumbing issue we speed-dial Master Tech and know we’ll get it taken care of.
ColumbiaMO65202 38.9975-92.3125



Excellent Work
Jonathan - Columbia, MO 65202
They guys did an excellent job with the new system installation and answering all questions that I had. They worked to make sure everything works great and also looks great as well.
ColumbiaMO65202 38.9725-92.27




Macenzie M.
Air conditioner not cooling Ashland Missouri

Matt M.
Indoor coil has ice in Ashland Missouri

Dillan W.
Air conditioner inspection and maintenance in Columbia Missouri.

Cris J.
Installing new toilet

Ryan H.
Drain cleaning in Columbia
Enjoy hassle-free cooling with help from the MasterTech team.
Contact us at (573) 777-3660 for AC repair, replacement, or maintenance services in Columbia, MO and throughout Mid-Missouri.