Our Guarantees
When you place your trust in Pass One Hour Heating & Air Conditioning®, you’ll have peace-of-mind knowing that our work is backed by no less than five guarantees of our work and word.

Lowest Price Guarantee
Anyone can make something cheaper by cutting corners and pricing it for less. So it is important to know what is and is not included in any heating and air conditioning system you choose for your home.
So, if you find a comparable installation for less, we’ll pay you a $100 bonus over the difference. All we ask is that the comparison MUST be “apples to apples.”
Pass One Hour Guarantees
Get peace-of-mind with a comprehensive array of guarantees from Pass One Hour:
- 100% Money-Back Guarantee
- Temperature Selection Guarantee
- Exclusive “No-Lemon” Guarantee
- Installation Workmanship Guarantee
- Lowest Price Guarantee

Exclusive “No-Lemon”
Our “No-Lemon” Guarantee recognizes that not every manufactured piece of heating & cooling equipment is 100 percent perfect, 100 percent of the time. Because you should expect to receive no less than the best value from your new heating & cooling and equipment. We offer an exclusive “No-Lemon” guarantee on our risk- free HVAC systems. Simply stated: If the compressor in your air conditioner fails during the first 5 years of ownership, or if the heat exchanger in your furnace cracks during the first 10 years of ownership, we will remove the “Lemon” and install a completely new one.
100% Money-Back
We agree to accept responsibility for your complete satisfaction with the materials and work provided by our technicians. During the first year, if you are dissatisfied with the performance of the equipment or the work of our people for any reason, we will correct the problem to your complete satisfaction. If you are not fully satisfied, we will remove the system that we installed within 30 days of your request and refund your entire investment.
Temperature Selection
We guarantee that when the equipment we have installed is maintained and operated in accordance with the manufacturer’s operating and maintenance manuals, the system will perform as we have stated and agreed upon. We promise a temperature variance of no more than plus or minus 2 degrees at your electronic digital thermostat whether heating or cooling your home. If the desired temperature selection is not achieved, we will make any upgrades, modifications, or repairs necessary to reach the desired temperature at no charge to you for a period of 5 years. Others Sell You Equipment… We Assure Your Comfort!
Installation Workmanship
Our NATE-certified installers are the best in skill, attitude, and workmanship. They’ll care for your home and complete the job with speed and precision. They wear floor savers, clean up when they’re finished, and take personal responsibility for your satisfaction. They will not smoke or swear in your home and they will be polite and courteous. At the end of the installation, if they have not performed in accordance with these high standards, we’ll refund whatever amount of the purchase price you feel to be fair. Bottom line: IF WE DON’T TREAT YOUR HOME WITH CARE AND RESPECT… YOU DON’T PAY.
When you need our services, contact us online or give us a call at (618) 427-2420

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‘Round the Clock Availability
No matter the hour, you can trust One Hour to be there to help you when you get hit with the unexpected.
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100% Satisfaction Guarantee
We guarantee our materials, labor, and craftsmanship for up to two years from the date of your service.
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StraightForward Pricing® Guide
Before we start any work, we discuss your available options so you know exactly what you are getting and how much it will cost. No hidden fees!
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Always On Time…Or You Don’t Pay A Dime!®
We understand your time is valuable, so we promise to arrive at your home within the predetermined time window that you select, or your service call is free.