We serve all of Johnson County, the most populous county in the state of Kansas. Johnson County is a wonderful part of the country that is very family-friendly with highly rated schools and community events throughout the year.

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Company Info

Ramon Blachly founded Blachly Heating and Cooling, Inc. in the spring of 1987. He had a wife, a six-year-old son and a five-year-old daughter.  He previously worked in retail sales while attending school at night. After seven years in the HVAC industry, he decided that the best way to provide a better life for his family was to go into business on his own. He put his phone number in the local directory, took a business course at the local community college and went door to door in Olathe looking for customers.

With a strong work ethic and attention to detail, it didn’t take long for Blachly to develop a loyal customer following. He built his business by being honest, convenient, and by treating each customer and their home with respect. From the beginning, his wife Janet was his bookkeeper, secretary, and scheduled appointments from their basement office while taking care of their two children. Later that same year, Blachly bought Olathe Heating and Cooling from John Henke upon his retirement. In 1989 the couple moved their equipment into their first building on Fir Street in Olathe and hired their first technician.

Never one to be afraid of change, Blachly decided that after 17 successful years as Olathe Heating and Cooling, the best way to continue to look after his family and to grow his company was to become a One Hour Heating & Air Conditioning® franchise. He was pleased to find that One Hour embraced the same values as he did…convenience, courtesy, honesty, and respect…and was able to provide his employees with more opportunities. The company has been doing business as One Hour Heating & Air Conditioning since 2004 and is dedicated to growing and continuing to “impress the socks off” their customers.

One Hour Heating & Air Conditioning of Olathe celebrated its 31st anniversary in the spring of 2018. Though now the company conducts business from a comfortable building at 1804 E 123rd St instead of a basement, Blachly doesn’t take any success for granted. He is constantly concerned with making his company better and his employees more successful. “Change is a big part of how we operate. We are constantly trying to find new and better ways to serve our clients, our employees and their families. Oh, and remember those two small children that were there in the beginning?  They both work alongside their parents, making it a second-generation business.  Jonathan and Andrea, along with long time technician, now Service Manager Matt Gower, are looking forward to the continued growth and success of this great company.”

As part of the One Hour Family, Blachly and Company have been honored with the Top Net Promoter Award in 2012, 2013, 2014, 2015, 2016 and 2017.  The Top Net Promoter Award is a reflection of their outstanding customer service experience while in the home.  In 2015, 2016 and 2017 they received the One Hour Top 25 Award.  For four years running, 2013 thru 2016, The Clockworks Home Services Presidents Award was awarded to the Olathe business due to their customer service scores, operational excellence and company growth.  Other honors include the Angie’s List Super Service award in 2006, 2008, 2009, 2013 and 2017.  They also have an A+ Rating with the Better Business Bureau.

We accept:

  • Visa
  • Mastercard
  • American Express
  • Discover

Local Technicians You Can Trust


We offer various financing options.

Comfort Club

  • Annual 21-Point Precision Tune-Up and Professional Cleaning (Cooling System)
  • Annual 21-Point Precision Tune-Up and Professional Cleaning (Heating System)
  • Annual Humidifier Tune-Up
  • 20% Discount on Repair Service
  • Lower Professional Evaluation Fee 24/7
  • Discount on new equipment

Area Served

All of Johnson County Kansas, Overland Park, Olathe, Shawnee, Leawood, Lenexa, Mission, Mission Hills, Mission Woods, Merriam, Lake Quivira, Fairway, Westwood, Westwood Hills, Prairie Village, Roeland Park, De Soto, Spring Hill, Gardner, Edgerton, and Bonner Springs.

  Business Address

1804 E 123rd St
Olathe, KS 66061

License Number


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