OnSite Heat & Air

08/27/2026

Great review from peter... "We have had OnSite service our air and heat in our house for over two years on a sixth month interval, as well as service some issues due to extended air conditioning use this summer. They have been universally excellent, not just in the repairs and maintenance, but in ease of scheduling communication and all interactions. We recommend them highly!"

"We have had OnSite service our air and heat in our house for over two years on a sixth month interval, as well as service some issues due to extended air conditioning use this summer. They have been universally excellent, not just in the repairs and maintenance, but in ease of scheduling communicat...

08/26/2026

Great review from Manote... "Great company and great techs. This company saved me $4,000.00. Another local company quoted me 7,800.00 to install my mini split. Don’t look anywhere else."

"Great company and great techs. This company saved me $4,000.00. Another local company quoted me 7,800.00 to install my mini split. Don’t look anywhere else."

08/23/2026

☀️ Highs BELOW 100°?! We’ll Take It! 🙌

After the stretch of extreme Oklahoma heat, we’re definitely thankful for some lower temperatures this week!

We’re looking at highs in the mid-to-upper 90s for most of the week. Still hot? Absolutely. But after the temperatures we’ve seen lately, every degree helps — for you AND your A/C! ❄️

🔧 Tip of the Week:
This little break in the extreme heat is a great time to give your HVAC system a quick check:

✔️ Check or replace your air filter
✔️ Clear grass, leaves & debris away from the outdoor unit
✔️ Make sure supply and return vents are open and unobstructed

Your A/C has been putting in some serious work this summer. A little attention now can help it finish the season strong. 💪

Enjoy the “cooler” Oklahoma weather this week! 😎

🔥❄️ Reliable HVAC Services, OnSite When You Need Us!

08/20/2026

❤️ NOMINATIONS ARE STILL OPEN! 💙

Do you know someone in our community who could truly use a helping hand?

Maybe it’s a family going through a difficult season. A veteran. A first responder. A teacher. A neighbor who is always helping everyone else. Or simply someone who deserves a little love when they need it most.

Through the Lennox Feel The Love program, deserving homeowners can be nominated to receive a new heating and cooling system at no cost to them.

OnSite Heat & Air is proud to participate again this year by donating our time and labor to install the system for a deserving family in our community.

But first, we need your nominations!

If someone immediately came to mind while reading this, take a few minutes and nominate them. Your nomination could make a huge difference for a local family.

❤️ Nominate someone today and help us Feel The Love!

https://www.lennox.com/sustainability/feel-the-love/

08/20/2026

Great review from Keith

Check out our great customer reviews!

08/20/2026

Great review from Michael... "These guys are great! I have needed service twice and these guys got here fast and the price was good. I would highly recommend them for your service needs!"

"These guys are great! I have needed service twice and these guys got here fast and the price was good. I would highly recommend them for your service needs!"

08/17/2026

More than just a changeout — this one was a comfort upgrade. 🔥❄️

Today we replaced this home’s older HVAC system with a new Lennox two-stage heating and cooling system.

Two-stage equipment gives the system the ability to operate at a lower capacity during milder weather and step up to full capacity when the home really needs it.

That means:

• Longer, steadier run times
• More consistent temperatures throughout the home
• Better humidity control during cooling season
• Quieter operation at lower capacity
• Improved efficiency without sacrificing comfort

Instead of being either 100% ON or OFF, this system can better match the needs of the home.

The result? Better comfort, better control, and a more efficient way to heat and cool the house.

Check out the before & after!

08/14/2026

Another home going up. Another opportunity to build it right from the start. 💪

Our OnSite New Construction team is out here every day working alongside builders to deliver HVAC systems designed for the home, installed with care, and built to perform for years to come.

New construction isn't just about getting equipment installed. It's about proper design, airflow, comfort, efficiency, and taking pride in the details before the homeowner ever walks through the door.

Quality starts during construction. Comfort follows for years.

Building a new home? We'd love the opportunity to be part of your project.

🔥❄️ OnSite Heat & Air
Stillwater's Premier Choice for Comfort.

08/12/2026

Great review from Bobbie

Check out our great customer reviews!

08/12/2026

Great review from Elaina... "Our AC went out during triple digit temperature days. On Site was at our home, at 10 PM (5 minutes after we called) to try and repair the system. The repair worked overnight but the system needed to be replaced (it’s 20 years old). It was going to take over a week to get the new system delivered. On Site purchased a portable window unit, brought it to the house and installed it for our use while waiting on the new system to be delivered.
The techs were very polite and professional and did everything they could to get the new system installed and running as quickly as possible.
I definitely recommend their services."

"Our AC went out during triple digit temperature days. On Site was at our home, at 10 PM (5 minutes after we called) to try and repair the system. The repair worked overnight but the system needed to be replaced (it’s 20 years old). It was going to take over a week to get the new system delivered....