Modern Air of Katy

HVAC System Diagnostic Services

Providing fast reliable HVAC service in Katy, Cypress, and the surrounding West Houston area

Modern Air Pro Services sign for HVAC System diagnostic

You Get A Free HVAC System Diagnostic Service Report - Available With Any Repair or service.

What is an HVAC System Diagnostic?

An HVAC System Diagnostic is an important part of any HVAC service . Whether you need annual maintenance, A/C or Heating repair, and even replacing an air conditioner or furnace, We will need to check the entire system for anything that could lead to a potetial system failure.
For example, If we determine your blower motor has failed and needs to be replaced, Certainly replacing the motor will get your system heating or cooling again. But what caused the failure in the first place? Is the system too old? are there air restrictions which could cause the blower motor to fail? These questions could only be answered if we check complete HVAC system.

Some Common HVAC System Problems

Some common Heating and Cooling problems are obvious, For example a dirty filter will cause air flow issues. But what about the things you dont see, For instance:

Service Value

  • Free HVAC System Diagnostic
  • Fast Reliable 24/7 Service 
  • 100% Satisfaction Guarantee
  • Priced Right Guarantee
  • Fixed Right Guarantee 
  • 10 Year Parts & labor warranty     Available on System Replacement
  • Service Maintenance Plans 
leaking ductwork foud durring an HVAC system diagnostic

Leaks in the ductwork

When there are leaks in the ductwork the system becomes inefficient and there is more potential ways for dirt and other contaminents to enter the system.

A/C tecnician checking air flow durring an HVAC system diagnostic

Restricted air flow

When the air flow in your HVAC system is resticted by a dirty filter, dirty evaporator coil or even a motorized damper stuck closed. Restricted air flow can cause major issues.

A/C technician checking the refrigerant levels durring an HVAC system diagnostic

Low refrigerant charge on an air conditioner

A low refrigerant charge on an air conditioner may go undetected for a long period of time causing the system to run longer and will eventually fail completely. 

So when do you need an HVAC System Diagnostic?

Modern Heating and Cooling systems are a crucial part of home comfort. However, when your System is struggling to keep your home comfortable, there could be more than one issue. Therefore we will check the entire system to find anything that will prevent safety, efficiency, and reliability.

When your HVAC system is not working as well as it should. And most importantly not working at all. Our service technician will inspect the entire HVAC System to find the problem. Then present you with a full explanation of the issues found. And present a competitive quote before we do any work or collect any payment.

 And our services are 100% Satisfaction Guaranteed.

24/7 HVAC Diagnostic Service

 Heating and cooling emergencies dont always happen durring bussiness hours, So we provide 24 hour emergency heating and cooling services for your convienience. And we work hard to provide service when you need it the most. In addition, our service is afforable and we have the experiance to provide fast reliable HVAC service.We are availalable anytime you need fast reliable service for your heating and cooling system, we are always here to help.

  •  Our expert service technician will determine what the issue is.
  • Then we will Check the entire HVAC system for anything that would prevent Safety, Reliability, and Efficiency.
  • After that we Present Our expert recommendations.
  •  and then Answer any Questions.
  • Present a competitive Quote.
  • Make necessary repairs (we carry most parts)
  • Schedule Service, Repair, or Installation.
  • HVAC System Diagnostic in the West Houston area is free with any repair.
HVAC system diagnostic technician arriving on a job

Customer Service Reviews

madeleine york
madeleine york
Technician not only replaced the thermostat but first checked my unit to make sure everything was working properly. He then made sure the installed thermostat was working properly as well and showed me how to use it. Would recommend highly
BD Ford
BD Ford
Angelica Merchan
Angelica Merchan
Paul Miranda
Paul Miranda
layne sullivan
layne sullivan
Where do I begin. Finding a new AC or heater repair company is like finding a new hairdresser or a auto repair company. It's terrifying. Years ago, I took a wild chance on Modern Air. First of all because it was a family-owned business and there's something I liked about that. I remember the first time that Charles from Modern Air came to my home because I had an air conditioning issue with my unit outside. He came over to me showing me a little fuse and said " see this little piece right here? Many people that can service your AC will tell you that you need a new unit or something major but this little piece cost $10 to replace". I knew I found my company. I have to call Modern Air at least once a year whether it's my old heater unit or my AC unit. They are extremely honest and although I am told ( and know) that my unit is ancient, they managed to keep it ticking for a few more years. . I live in the Westbury area and they will come all the way over to service my home from Katy. They show up on weekends if it's an emergency. Honestly I've never had to wait for days unless it was the part that was needed that out of stock at the moment.The issue is usually is taken care of within 2 days. I will leave you with this last sentence: When you find somebody that you can trust, you stick with them. You can trust Modern Air. 😊
Brady McBride
Brady McBride
Evander Martin
Evander Martin
Michael McRill
Michael McRill
Rick Mounce
Rick Mounce
Outstanding company to do business with.
travis wylie
travis wylie
Mr Charles Guthrie was the only person that answered my late night emergency call and showed up bright and early in the morning. Ended up having to replace my outside unit same day for a very reasonable price. I will not be using anyone else for my hvac needs! You can’t go wrong with Modern Air of Katy.