Keith Air Conditioning & Heating
Marshall's trusted heating & cooling experts. Serving East Texas families and businesses with fast, friendly, efficient service since 1975.
5.0 Google Rating
140 reviews
Since 1975
51 years in business
Trane Comfort
Specialist dealer
Residential & Commercial
All of East Texas
What We Do
Complete Heating & Cooling Services
One local team for everything that keeps your home or business comfortable — from quick repairs to full system installs.
AC Service & Repair
Fast diagnostics and repairs to keep you cool through East Texas summers.
Heating Service & Repair
Reliable heat when you need it — furnaces, heat pumps, and systems tuned right.
Maintenance
Planned tune-ups that extend equipment life and lower your energy bills.
System Installation
Right-sized new systems installed cleanly, backed by Trane quality.
Duct Cleaning
Cleaner air and better airflow with thorough duct cleaning service.
Duct Design & Installation
Properly designed ductwork for even comfort in every room.
Commercial HVAC
Keep your business comfortable with service built for commercial loads.
Emergency Service
After-hours help when your system quits — we answer 24/7.
Why Choose Us
The Local Team East Texas Trusts
Over 51 years, we've earned a 5.0-star reputation one fast, friendly, efficient visit at a time.
Serving East Texas Since 1975
Three generations of local families and businesses have trusted Keith Air for dependable comfort.
Fast Response
“Keith was at our home within 20 minutes of our call.” We move quickly when you need us.
Upfront Pricing
You know the cost before we start. No surprises, no pressure — just honest work.
Satisfaction Guarantee
We're not done until you're comfortable. Our 5.0-star reputation is built on it.
Reviews
5.0 Stars From 140 Neighbors
Real words from real East Texas customers.
“As has been the case for over 15 years, the service was fast, friendly and highly efficient.”
“Keith was at our home within 20 minutes of our call!! Professional, efficient and polite!”
“Super-responsive and super-friendly!!! They have always fixed my problems quickly.”
Never miss another after-hours call
Our AI receptionist answers 24/7 — books jobs, answers common questions, and makes sure a late-night breakdown never goes unheard.
- Answers calls day and night, weekends and holidays
- Books service appointments on the spot
- Handles common questions about hours, services & service area
AI Receptionist
Online now · 24/7
Service Area
Proudly Serving East Texas
Based in Marshall, we keep homes and businesses comfortable across the region.
Not sure if you're in our area? Call (903) 935-3664 and we'll let you know.
Free Quote
Get Your Free Quote
Tell us what you need and we'll get back to you fast. For emergencies, call us directly — we answer 24/7.
Fastest way to reach us
(903) 935-3664
Visit our shop
909 E End Blvd N, Marshall, TX 75670
Hours
Mon–Fri 8am–5pm · After-hours emergency service available
Request a Free Quote
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