about us

Welcome to All Systems Service, Inc. – your trusted partner for reliable heating, cooling, installation, and repair services. Founded in 1989 in Toledo, Ohio, we have built a strong reputation for delivering exceptional HVAC/R solutions to both residential and commercial clients.

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What started as a company focused on major appliance repair has grown into a full-service HVAC provider, specializing in heating, ventilation, air conditioning, and refrigeration systems. Over the years, we’ve expanded our expertise, gained many certifications, and earned the trust of countless customers throughout the region. With 30-plus years of experience, our owner, Don Allen, continues to lead the team with technical expertise and a personal touch that ensures every project is completed with precision.

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At All Systems Service, Inc., we understand that your comfort is a top priority. Whether you need a new HVAC system installed, urgent repairs, or routine maintenance, our team is dedicated to providing you with the highest level of service. We listen closely to your needs, ensuring that every solution is tailored to maximize comfort, efficiency, and long-term performance.

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Our reputation for professionalism, craftsmanship, and customer care is built on the simple principle of doing things right the first time. We approach every job with the same dedication and attention to detail, ensuring lasting results that keep your home or business comfortable year-round. And we are a Rheem® Pro Partner so you get the peace of mind that comes with their highest standards. 

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Let us show you why All Systems Service, Inc. has been the trusted name in HVAC for over three decades.