Furnace & Heating Repair
Same-day repairs for furnaces, boilers and heat pumps when the heat goes out.
Learn MoreTrusted Technicians, Transparent Quotes
From urgent repairs to high-efficiency upgrades, our local team keeps your home comfortable in every season.
2,282+Projects completed
1,198+Happy clients
19+Years in business
31Towns covered
Trusted by businesses and homeowners across Texas
Licensed & InsuredTexasTop Rated2026Certified TechniciansFactory trained5-Star ReviewsLocal customersSatisfactionGuaranteed
Our Services
Heating, Cooling & Fresh Air
From urgent repairs to complete new systems, our own technicians handle every job from start to finish.
Heat Pumps
Efficient all-in-one heating and cooling, installed and serviced by certified techs.
Learn MoreDuctwork & Duct Cleaning
Sealed, cleaned ductwork for better airflow, lower bills and cleaner air.
Learn MoreSystems
Choose the right system
We install every major heating and cooling system and explain the options during your estimate.
Compare SystemsCentral Air
Whole-home cooling
Heat Pumps
Heating and cooling in one
Gas Furnaces
Reliable winter warmth
Ductless Mini-Splits
Room-by-room comfort
About Us
Your Partner for Year-Round Comfort
Citadel has kept homes across Corpus Christi comfortable since 2007. We're a local, family-run team that believes in honest advice, quality equipment and doing every job properly the first time.
Learn MoreOur Mission
To keep every Corpus Christi home comfortable, safe and efficient with honest advice and careful work.
Our Vision
To be the most trusted local name in heating and cooling, recommended by neighbours for generations.
Our Values
Honesty, skill and respect for your home, from the first call to the final check.
Recent Works
Hundreds of Happy Homes
Verified Reviews
Trusted by Our Neighbours
CI
4.81,198 reviews
“Friendly, on time and spotless. The furnace repair cost less than we expected and it's running perfectly.”
“Our AC died on the hottest day of the year. They had a tech here in two hours and cool air by dinner.”
How It Works
Start Your Project Today Comfort in 4 Simple Steps
Book a Visit
Pick a time that suits you, including evenings.
Honest Diagnosis
We find the real problem and explain your options.
Expert Repair or Install
Our technician completes the work cleanly and safely.
Service Area
Proudly serving Corpus Christi and nearby
Corpus ChristiPortlandRobstownRockportAransas PassFlour BluffCalallen
FAQ
Good to Know
Are your technicians licensed?
Yes. Our technicians are licensed, insured, background checked and trained on all major brands.
Should I repair or replace my system?
If your system is over 12 to 15 years old or needs frequent repairs, replacing it often saves money. We'll give you honest options.
How often should I service my HVAC system?
Twice a year is ideal: your AC in spring and your furnace or heat pump in autumn. Regular tune-ups prevent most breakdowns.
Do you offer financing?
Yes. Approved homeowners can spread the cost of a new system with low monthly payments.
Do you offer emergency repairs?
Yes. We offer same-day and after-hours repairs for no heat, no cooling and other urgent problems.
Too Hot or Too Cold? We Can Help
Don't wait for a breakdown. Book a service or get a free quote from our local team today.
Get Your Free Estimate
Fill out the form and our team will get back to you within 24 hours.