About Us

Michall Daimion Heating & Air Conditioning, Inc. opened its doors in 1976—and we’ve been delivering high-quality HVAC services to the Main Line ever since. Having started working from a bedroom closet with a landline, our company grew and transitioned to working in newly constructed homes, and we served many of the homes that were built during the housing boom in Chester County.

Thanks to our hard work and dedication, we have continued to grow since then. We’ve made it this long not because of luck, but because of our mission: to help homeowners achieve peace of mind!

The Main Line’s Premier Service Provider Since 1976.

Michall Daimion

Heather Daimion

The Mission That Drives Us

Behind everything we do as a company is the goal to help people feel comfortable and secure in their homes thanks to our skill and integrity. At Michall Daimion Heating & Air Conditioning, Inc., we abide by these core values that illustrate how we C.A.R.E.

• Collaboration: Working together to achieve more
• Accountability: Do it right the first time
• Respect: Listen and offer honest counsel
• Excellence: Craftsmanship that lasts

We take our role in managing your home comfort seriously because we understand that your home is your sanctuary, the place where you connect with loved ones. When your heating or air conditioning isn’t working well or you’re worried about your home’s air quality, you need honest and expert advice. We’re here to provide it!

We start by listening, investigating the situation, and sharing our knowledge to provide the best options for you to consider. We genuinely share our expertise and craft, empowering you to make smart choices about your home environment. With everything we do, we want to delight our customers with the exceptional value and unprecedented experience that we include with our services.

The Services We Provide

We want to be the only service provider you’ll need for all HVAC services in the Main Line. We provide:

• Timely, effective, and efficient system replacement and installation, including proper sizing.
• Effective and long-lasting service repairs for your HVAC systems.
• Maintenance services that increase efficiency and decrease utility bills.
• NCI-certified residential system testing and performance diagnostics to ensure your system is operating well and to identify anything that might be draining energy unnecessarily.
• Efficient indoor air products such as IQAir purifiers.

Our Promise to You

There is more than one reason that you will be able to breathe easy when you work with Michall Daimion Heating & Air Conditioning, Inc.. Alongside our quality workmanship, any scheduled service includes:

• Open and honest communication from your service technician.
• A commitment to customer care and excellent service.
• Priority scheduling for all maintenance plan members.

When you need a helpful and trustworthy team to take care of your HVAC and indoor air quality needs, look no further than Michall Daimion Heating & Air Conditioning, Inc. Our family has provided services to Main Line homeowners for over 40 years, with expertise and care. Let us help you achieve peace of mind.