Southwest Houston · Family Owned Since 1975
The royal treatment for your AC and heating.
NATE-certified technicians serving Houston, Fulshear, Katy, Sugar Land and the Bay Area — on every make and model, residential and commercial.
Call Castle Air Conditioning & Heating
When You Want the Royal Treatment
Your home is your castle. And, every castle needs a good air conditioner and heater for optimal comfort. If your air goes out or you need a new HVAC system altogether, we can help! Our experienced HVAC technicians can advise you about your options, troubleshoot and make an expert repair, and get you set up on a regular preventative maintenance program.
You don’t have to be royalty to get the royal treatment – we treat all our customers like family. Call or text us today and we’ll send a fully qualified HVAC technician to your home or business right away.
What We Do
Air Conditioning
Houston residents rely on air conditioning to stay comfortable during much of the year. We can install and maintain an efficient HVAC system for you that will stand the test of time.
Heating
Though cooler weather is short-lived on Houston’s Gulf Coast, everyone wants to stay warm when the cold front arrives. Count on our team to offer the latest high-efficiency furnaces and heat pumps plus expert service and maintenance when you need it.
Maintenance
Our “Set It and Forget It Assurance Plan” is a preventative maintenance plan for your HVAC investment. We recommend tune-ups in the fall and spring for residential customers and quarterly for commercial customers.
Why Pick Castle Air Conditioning & Heating?
- Expert AC & Heating Repair Since 1975
- American Standard Customer Care Dealer
- Prompt HVAC Service for All Makes & Models
- Residential and Commercial Expertise
- NATE-Certified Technicians
- Financing Available with approved credit
- Guaranteed Satisfaction
- Licensed and Insured
- Family Owned & Operated
- Serving Southwest Houston, Texas
TACLA00051749C | Regulated by the Texas Department of Licensing & Regulation
Real homeowners, real service
Houston homeowners keep asking for our technicians by name.
Google Reviews
4.9
★★★★★
Based on 200 reviews
★★★★★
“Castle AC was great on time kept us posted as to the status when the technician would arrive. Allen was great. I would have him back here anytime. Sarah in the office was very informative and helped me through every step of the process getting set up and scheduling the appointment.”
Chris Morton
★★★★★
“Allen has been a great technician! He is very friendly, professional and communicates well! … he worked late and fought through traffic to make sure we were taken care of today! Highly recommend Allen!”
Ashley Homan
★★★★★
“Castle worked me in quickly. They came out, tested to ensure that what I thought my system needed was correct and then fixed my issue. The fact that they took the time to fully troubleshoot and explain every step to me before solving my problem helped me understand and gave me so much confidence in their work.”
Linda Kolker
Areas we serve around Houston
Castle is based in Fulshear and works across Southwest Houston, Fort Bend County and the Bay Area. Choose your area for local detail on response times and the systems we see most.
Keeping You Informed About AC System
- Why Is Upstairs Hotter Than Downstairs? A Houston Answer
- How Much Does AC Repair Cost in Houston? (2026 Guide)
- Top Tips for Preventing AC Breakdowns Before Houston’s Summer Heat
Are you having an AC or Heating issue?
Book An Appointment