About Keystone Htg & AC Co, Inc

Keystone Htg & AC Co, Inc is a trusted company serving Southeast Wisconsin communities since 1918. The dedicated staff provides 24/7 service, offering same-day solutions with expert knowledge of the latest HVAC products and technology. They service all brands, including Lennox, Rheem, and Aprilaire. Customers praise the company's friendly and professional team, highlighting integrity, responsiveness, and consideration. Technicians like Adam and Collin are commended for their troubleshooting skills, patience, and ability to find solutions. Many customers appreciate the thoroughness of the technicians, who explain the work done and ensure that everything is functioning properly. While some find the rates a bit high, the overall experience remains positive, with high recommendations for Keystone's heating and cooling services. The company is also recognized for its exceptional customer care, with reviews reflecting satisfaction in both service and installation. Customers have expressed strong trust in Keystone, noting their honesty and reliability, especially in urgent situations. The team’s quick response and friendly attitude make the experience even better. Customers also mention the efficiency and professionalism of technicians like Adam and Cody, who completed installations smoothly and with care. Overall, Keystone continues to be a highly recommended choice for HVAC needs in the area.

Photos

Add a Photo
Keystone Htg & AC Co, Inc
View All Photos

Reviews for Keystone Htg & AC Co, Inc

Write a review
  • Dec 2025

    Thanks for coming out ASAP, Andrew was knowledgeable and gave us all the details on testing/diagnostics. He got the part and fixed it one the spot. Would highly recommend this company and Andrew and will definitely call them back again in the future! A+++

  • Dec 2025

    Highly skilled and honest service techs. Our furnace stopped working. Called a different company to come and fix it. All they did was look at it without even touching it. And gave me a quote to basically overhaul the whole furnace for 3 to 4 thousand dollars. I called Keystone. They came out right away. Checked out everything and fixed the furnace for 400 dollars. They saved me a lot of money and were very honest.

  • Dec 2025

    Thank you Keystone for fixing my furnace in the middle of this brutal cold weather! I had another company come to my house on Monday because my furnace was not working correctly. I explained that the furnace was giving a code for a faulty limit switch but bypassing the switch did not solve the problem. The tech from the company looked at the furnace for about ten minutes and told me it was in fact the limit switch. He started up the furnace said everything worked fine and left after charging me his $100 diagnostic fee for turning on the furnace. Well three days later the limit switch arrived and after I installed it I still had an intermittently working furnace. I called this other MAJOR local company back and they told me they would have to charge me another diagnostic fee to look at the furnace. Based on the success of their first trip and the u qualified tech that came out I elected to pass. Instead I called Keystone and they got a tech to my house within three hours of being called. This is impressive since everyone has furnace issues on bad weather or cold days. Add to this I live way out in Waterford and it’s even MORE impressive. Andrew the tech showed up and listened to the whole story. He then went and tested each switch and safety internally on the furnace making sure everything was functioning correctly. When he confirmed everything worked he started tracing wires and found one bad connection in the main wiring harness. He fixes the connection and BINGO - HEAT!! I have two young kids at home and the temps were down to the upper 30’s in the house. I was running out of options fast and Keystone saved the day. I would HIGHLY recommend Keystone. Their techs know what they are doing, they responded quickly, and they were more than fair in what they charged. Thank you so much Keystone, you made my day.

Hours

Monday: Open 24 hoursTuesday: Open 24 hoursWednesday: Open 24 hoursThursday: Open 24 hoursFriday: Open 24 hoursSaturday: Open 24 hoursSunday: Open 24 hours

Tips

 on-site services accepts credit cards open to all

Location

2707 Durand Ave, Racine

Directions Call Website Suggest an Edit