Guinan Heating and Cooling, INC gets the job done right!

About Us

Guinan Heating and Cooling is a family owned business located in Missouri Valley, Iowa.

We are licensed, professional installers of high efficiency residential heating and cooling systems. We are proud suppliers of Tempstar brand heating and cooling products. We also install Honeywell humidifiers, Honeywell thermostats, Honeywell air cleaners, and Honeywell ultraviolet air disinfection systems.

We service what we sell and many other brands.

We install Climate Master geothermal heat pumps for the ultimate heating and cooling system.

We are licensed in Iowa and Blair, Nebraska. We have serviced the Missouri Valley and surrounding areas for over 21 years. We have over 50 years of combined experience in business.   

Mark Guinan, owner

Contact us now!


We have years of experience planning, managing, and executing construction projects of all kinds. Our team is professional and reliable, and we will work within your constraints. We always stay on the job until it's done to your satisfaction.


123 E. Lincoln Hwy, Missouri Valley, IA | 712-642-4466

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