Mt Vernon, MO HVAC

Trusted HVAC Repair & Service in Mt. Vernon, MO

Locally Owned. Honestly Priced. Always at Your Service.

If your heating or cooling system breaks down in Mount Vernon, MO, you need a local HVAC technician who shows up fast, fixes the problem right, and won’t overcharge you to do it. That’s exactly what you get with At Your Service 417 Heating & Air Conditioning.

We’re proud to provide affordable HVAC repairs, installations, and maintenance in Mount Vernon and surrounding communities. With fair pricing, flexible financing, and same-day service available, we’re here to make home comfort easy and stress-free.

Best Heating & Cooling Services in Mount Vernon, MO

Whether your AC is blowing warm air or your furnace won’t start on a cold morning, we’re ready to help. Our team services all major HVAC brands and provides clear, upfront options so you can make an informed decision—without the sales pressure.

We offer:

  • HVAC repairs and diagnostics

  • AC and furnace installations

  • Heat pump service and replacement

  • Seasonal tune-ups and inspections

  • Indoor air quality upgrades

  • Financing options with fast approval

We’ll let you know exactly what’s going on with your system, what it will take to fix it, and what your options are—so you’re never left guessing.

Why Mt. Vernon, MO Residents Trust Us

Since 2013, At Your Service 417 has helped homeowners throughout southwest Missouri stay cool in the summer and warm in the winter—without breaking the bank. We’re not part of a corporate chain, and we don’t believe in selling you things you don’t need. We’re a small, hard-working team that values honesty, craftsmanship, and customer respect.

  • Same-day service when possible

  • Best prices for HVAC service in Mount Vernon

  • Financing options available

  • 30-day warranty on repairs

  • Local service, 24/7 availability

Whether you’re in town or out on the edge of the countryside, we’re happy to make the drive to get your comfort back on track.

HVAC Help is Just a Call Away in Mt. Vernon, MO

From quick furnace fixes to full AC replacements, At Your Service 417 delivers reliable, budget-friendly HVAC services across Mt. Vernon, MO and surrounding areas. If your system’s acting up or due for a tune-up, let’s take care of it before it turns into a bigger problem.

Call or text 417-840-7418 to schedule your service or request a free quote.
We’re always ready to help—and always at your service.

Fast, Friendly HVAC Help in Mt. Vernon—Day or Night

When your comfort is on the line, you don’t have time to wait. At Your Service 417 Heating & Air Conditioning is ready to deliver affordable HVAC repairs, easy financing, and same-day service throughout Mt. Vernon, MO and surrounding areas.

We’re available 24/7, because heating and cooling emergencies don’t run on a 9–5 schedule—and neither do we. Whether you need a quick repair, a second opinion, or a full system upgrade, we’ll walk you through your options with honest advice and fair pricing.

Call or text 417-840-7418 now to schedule service.


We’ll be there when you need us—no gimmicks, no pressure, just real help from a team that’s always at your service.

We Service Mt Vernon in Missouri

Ever wondered how close At Your Service 417 Heating and Air Conditioning LLC is to servicing your HVAC needs?

Our clients are in the greater Mt Vernon, Missouri area, and with a population of 169,724 and growing, we are prepared and look forward to offering our excellence in customer service. Whether you need to get your HVAC equipment serviced or a quote for a new unit, we’re here for you. Call us at (417) 840-7418 to schedule an appointment, and let us help you next.

Local Reviews in Mt Vernon, MO

4.9
Based on 77 reviews
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Crystal Weeks
21:43 30 Oct 23
Tim went above and beyond to get our furnace for us. Very kind guy. Will alway use him. Thanks for being awesome Tim!
Alex Howe
15:21 21 Oct 23
I got a fair price and quality work from this company. Could not recommend them enough. Got my new furnace into a relatively tight area. They were willing to do the small extra things that a lot of companies would have skipped out on.
Jessica Eagleburger
18:50 10 Oct 23
Tim was AMAZING!!! Most definitely will keep his number for if I ever need help with heat or air again! He was very professional and nice. And made you feel like he actually cared about getting your unit working again and doing it without having to break your bank account. Hands down he went above and beyond and this some!!! Anyone out there looking for a HVAC guy Tim with At Your Service 417 Heating And Air Conditioning is most definitely the guy you should call without any hesitation!!!!!
Tammy Goetz
18:38 10 Oct 23
Tim was great! Very professional and will treat you well. Fixed my furnace quickly and at an amazingly affordable price! Will be keeping his card. Have finally found an HVAC company that I can trust!!
Justin Beck
18:04 28 Aug 23
Very informative and helped right away.
Kasey Stanford
23:52 23 Aug 23
Thoroughly tested my unit after other companies failed to do so. Found I was low on refrigerant and my inside temperature was 8° lower the following day.
Suzanne Strait
18:10 23 Aug 23
Tim and Dustin replaced my AC/furnace inside and outside 2 years ago. (I’m just now getting to the review) They did an amazing job. We were without AC in the middle of Aug (it was a 2 day job). Tim provided us with a big portable AC unit at no additional cost, until the job was done. I would 100% recommend him and his team.
Dave Brown
18:13 12 Aug 23
Was extremely helpful, willing to work with me over the phone to get my system up and running.
Steve David
13:08 29 Jul 23
We Couldn't be more pleased.Tim went the extra mile to make sure that we had a working air conditioner on a extremely hot day. Very satisfied
Erin Hargus
19:11 17 Jun 23
Tim is an actual angel on earth! We called "All Klear All Hours" in a panic on Wednesday night with our air messing up. They came the next day and quoted us $2200 to fix it to THEN be able to test. Heartbroken- we tried one final place on Friday at 5pm and Tim came this morning, fixed our air and we paid him $99. TIM IS OUR GUY FOR THE REST OF FOREVER!! There aren't enough words to express how much we appreciate you helping our family and NOT taking advantage of us!!
Kevin Ozkal
17:31 06 Jun 23
Quickly responded to a non-cooling A/C. Performed troubleshooting to find cause and then offered options. I opted for unit replacement - only to a few days to get unit in and installed. Installation went well (aside from my smart thermostat being not so smart).
Friendly and professional.
Dee Dee B.
18:35 12 May 23
I had to move my mobile home, and along with it I had to move my exterior air conditioning, having it disconnected and reconnected. I was very thankful to have someone that was professional and could do the job without me having to worry if it was done correctly. I was very at ease knowing that Tim work so hard to make sure that he did a good job.
Anna M. Winfrey
01:43 03 Jan 23
Tim is completely professional and is an expert. He has obviously been doing this a long time. His quote was more than reasonable and he stuck to it. The work he did was well done and clean. He took care of everything, including changing out any pipes as required, or putting down concrete blocks as needed. I highly recommend At Your Service 417.

We had previously contacted Tim about servicing our furnace when we bought a house 3 years ago. At that time, he fixed it the best he could and recommended we think about purchasing a new furnace. He was not pushy nor “salesman” like. He gave us his honest opinion and did not push when we declined at that time. But we felt comfortable enough with his service and information that we knew then that we would be reaching out to him specifically when it was time to do the replacement.

Absolutely recommend.
Don Dickey
22:34 21 Dec 22
Got a panic call from elderly family member saying her furnace was not running properly. With cold weather in the forecast and me living in Jefferson City I texted Tim based on a recommendation. He replied immediately. This was late in the afternoon. He was in their neighborhood said he would stop by. He was at the house within minutes had the problem taken care of. He was great to work with.
KI Robinson
16:36 16 Dec 22
Very knowledgeable and works hard to get the job done right and as little cost as possible! Recommend!
Julie Phillips
15:08 25 Jul 22
Responded to my first and only call on a Saturday and he was at out house within a few hours like he said he would be. Repaired the AC at a reasonable price. We will definitely use this company again and would recommend to anyone.
Johm Hawkins
22:00 16 Jul 22
Been using Tim for several years. By far the man for the job with the best price.
Melissa Clyde
12:29 22 Jun 22
Tim is an honest man that may seem quirky, but he'll get your job done. During this heat wave my 30 year old air conditioner had enough. He was very responsive to any of my concerns. I'm greatful for his service, and you will be, too.
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