Ice storms to triple digits.
One crew for both.
Read our Google reviewsTwo systems. One crew.
Heating and cooling are different trades. Sitton runs both in-house, so the crew that installs your furnace is the crew that services your AC.
Heating & Furnace
Furnace repair, installs, heat pumps, and emergency heat that carry your family through Oklahoma's coldest nights.
- Heating Repair
- Heating Installation & Replacement
- Heating Maintenance & Tune-Ups
- Heating Inspection & Testing
Air Conditioning
AC repair, replacement, and tune-ups that keep you cool and dry through the long, humid Oklahoma summer.
All cooling servicesWhich sounds like your house?
Pick the problem — we'll take you straight to what to check, what it usually means, and how we fix it.
Emergency? We answer 24/7
Or just call (405) 780-3034Whole-home & business comfort, every season.
For your home
For your business
The crew that shows up is the family that owns it.
Meet Sitton Mechanical
Local, honest, and trained to do it right the first time.
Customer-first, always
Honest recommendations and upfront pricing — never an upsell you don't need.
Trained & equipped
EPA-certified technicians who treat your home and business with respect.
Work we stand behind
We back every install and repair, and we're here when you need us.
Flexible financing
Wisetack financing keeps comfort within reach.
Already have a quote? Get a second look.
We'll read it line by line and tell you straight whether their number is fair — at no charge, no pressure to switch. If their quote is the better deal, we tell you. Your details stay with the technician and our office — never shared.
Comfort in four steps.
No runaround, no surprises — just a clear path from your first call to a home that feels right again.
Reach out
Call or request service online — a real person, 24/7.
Honest diagnosis
We inspect, explain in plain English, and give upfront pricing before any work begins.
Expert work
Repairs, installs, and tune-ups done right the first time — and a clean worksite when we leave.
Comfort restored
You're back to comfortable, with financing options and maintenance plans to keep it that way.
Upfront pricing, before any work begins — the only surprise is how comfortable your house feels after.
Request Service
Equipment chosen for both extremes.
Authorized dealer
Authorized Daikin Dealer
As an authorized Daikin dealer, we install and service the same industry-leading, whisper-quiet systems we'd put in our own homes — including high-efficiency Daikin ductless mini-splits built for Oklahoma's swings from summer heat to winter cold.
- High-Efficiency Systems
- Whisper-Quiet Comfort
- Ductless Mini-Splits
- Warranty-Backed Installs
For businesses
Refrigeration that keeps you running.
Restaurants, markets, and shops across Stillwater trust Sitton Mechanical to keep walk-in coolers, freezers, and refrigeration systems cold — with fast response when every minute counts.
- Walk-in cooler & freezer repair
- Refrigeration installation
- Commercial HVAC service
- Preventive maintenance plans
Money on the table
What Stillwater neighbors say
“I had a fantastic experience with Sitton Mechanical! We've been having some HVAC issues that I didn't exactly know how to describe. The technicians, Jackson and Paul, we're on time, very professional, and helped me diagnose everything without making me feel dumb. I particularly appreciated that I wasn't up sold on anything, actually Jackson discouraged me from getting a few things done because he didn't think it was necessary. That's a level of honesty missing in the service industry right now. The pricing was transparent and reasonable. The next time I am in need I will make Sitton Mechanical my first call.”
Mitch&Jaylene Williamson
“They did a great job. The tech was very good at the job. He was polite and friendly.”
“Excellent service and communication. Top rated company with integrity.”
Expert guides from our Stillwater crew.
All guidesShould you repair or replace your AC? A 5-question test for Stillwater homes.
Age, refrigerant type, repair cost, energy bills, and comfort: five honest questions that tell you whether to fix it or replace it.
Ductless Mini-SplitsWhat to expect when you switch to a Daikin ductless mini-split.
Quiet, efficient, and zone-by-zone — but what does install day actually look like for an OK home?
Commercial RefrigerationWalk-in cooler not holding temperature? Six causes (in order of cost).
From a stuck damper to a failing compressor — what Stillwater restaurant owners should rule out first.
Got questions? Pricing, timelines, emergencies, plans.
Browse the FAQsService areas
Proudly serving Stillwater & beyond.
From our home in Stillwater to Perkins, Cushing, Perry, Glencoe and the surrounding towns — fast, local comfort service you can count on.
View all service areasComfort now, pay over time — Wisetack financing puts an efficient new system within reach.
See financingReady to get comfortable again?
Talk to a real Sitton Mechanical technician — never a phone tree. Same-day appointments and 24/7 emergency service across Stillwater and north-central Oklahoma.
Authorized Daikin Dealer · Licensed & Insured
Family-owned — here to care for you
Same-day & 24/7 emergency service
- Upfront, honest pricing
- Licensed & insured technicians
- Workmanship we stand behind