Business Details
50 Years
experience
Emergency
services
Premier HVAC Services in Malvern, PA
Michall Daimion Heating & Air Conditioning, Inc. has been delivering high-quality HVAC services to the Main Line since 1976. Founded in a bedroom closet with a landline, we grew alongside Chester County's housing boom, serving newly constructed homes and evolving into the region's premier service provider. Our mission centers on helping homeowners achieve peace of mind through skill and integrity, guided by core values of Collaboration, Accountability, Respect, and Excellence. We specialize in HVAC system replacement, installation, maintenance, and repairs, complemented by NCI-certified diagnostics and advanced indoor air quality solutions. Our NATE-certified technicians prioritize open communication, customer care, and efficient service, including priority scheduling for maintenance plan members.With over 40 years of local expertise, we combine family-run dedication with the resources of a well-established company. Our commitment extends beyond technical proficiency to empowering customers with honest counsel and tailored solutions for their home comfort needs. We serve Berwyn, Bryn Mawr, Paoli, Villanova, and surrounding areas, ensuring every client receives dependable, transparent service. Our longevity reflects a relentless focus on craftsmanship that lasts and relationships built on trust. Let us help you maintain a comfortable, secure home environment with the same dedication that has defined us since 1976.
Services
Air Conditioning
Heating
Duct Services
Indoor Air Quality
Water Heaters
Boilers
Maintenance Plans
Emergency Repairs
System Diagnostics
Air Purifiers
Details
- Year established: 1976
Highlights and features
- We offer NATE-certified technicians with expertise in HVAC systems
- Our team provides 24-hour emergency service for urgent needs
- Family-run business with 45+ years of local experience
- We guarantee priority scheduling for maintenance plan members
- Our services include NCI-certified system testing and diagnostics
Associations and certifications
- NATE-certified
- NCI-certified
What people say
Prompt, responsive
Best guidance
24-hour service
Always helpful
Professional team
Services
Air Conditioning
We provide comprehensive air conditioning solutions including installation, maintenance, and repair of central systems, ductless units, and smart thermostat integration. Our NATE-certified technicians ensure optimal cooling performance while maximizing energy efficiency. Serving Malvern homeowners with prompt emergency service during peak summer months.
Heating
Our heating services cover furnace and boiler installation, repair, and seasonal maintenance. We specialize in high-efficiency systems including dual fuel and heat pump combinations. Technicians perform comprehensive diagnostics to ensure reliable winter operation and improved indoor air quality through proper system integration.
Duct Services
We offer complete duct system evaluation, cleaning, sealing, and replacement services. Our NCI-certified diagnostics identify energy losses and airflow issues. Technicians use advanced sealing techniques to improve system efficiency by up to 30% while enhancing overall indoor air quality and temperature consistency.
Indoor Air Quality
Our IAQ solutions include air purification systems, humidity control, and ventilation upgrades. We install HEPA filters, UV light systems, and energy recovery ventilators to reduce allergens and improve respiratory health. Custom solutions address specific household needs like pet dander or seasonal allergies.
Water Heaters
We provide traditional tank and tankless water heater installation, repair, and maintenance. Our technicians optimize system performance while addressing common issues like inconsistent temperatures and sediment buildup. Emergency service available for complete system failures with same-day replacement options.
People
Michall Daimion
Founder
Michall established the company in 1976, growing it from a home-based operation to Main Line's premier HVAC provider. With decades of hands-on experience, he oversees operations while maintaining the company's founding commitment to integrity and customer care.
Heather Daimion
Manager
Heather manages daily operations, ensuring service excellence across all departments. With over 20 years in the business, she focuses on maintaining family values while implementing modern efficiency improvements that benefit both customers and technicians.
Questions
Do you offer emergency HVAC services?
Yes, we provide 24/7 emergency service for urgent heating and cooling needs with technicians available year-round.
What areas do you serve?
We serve Main Line communities including Malvern, Paoli, Bryn Mawr, Villanova, and surrounding Chester County neighborhoods.
Are your technicians certified?
All technicians are NATE-certified with additional NCI certification for system performance diagnostics and energy efficiency analysis.
Do you offer maintenance plans?
Yes, our membership includes twice-yearly maintenance, 24/7 emergency priority, 20% parts discount, and free filters up to $150.
Can you help with financing?
We offer financing through Wells Fargo and Greensky for qualifying HVAC installations and major repairs.
What HVAC brands do you work with?
We service all major brands and recommend premium systems based on home requirements and energy efficiency goals.
Reviews (7)
Lori Maniscalco
Jun 14, 2022
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We had a wonderful experience with this company. I would highly recommend using them. Paul, Dan and Chuck were a very professional team and worked diligently and efficiently to install a new Ac and Heat pump unit in our home. Our attic was very difficult to manage and work with for various reasons but they remained very professional, courteous and tenacious through the entire installation day. They even took the time with us at the end of the day to go over the thermostat and different parts of the unit.
The owner also worked hard to make sure all the details were taken care of prior to that day. She even have us a temporary portable unit during until our one part was available. Don't hesitate to use them, great company.
The owner also worked hard to make sure all the details were taken care of prior to that day. She even have us a temporary portable unit during until our one part was available. Don't hesitate to use them, great company.
Elizabeth Sabel
May 22, 2022
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Recently had my air conditioning unit replaced with no complaints. The people that came to install the unit were on time and very friendly. When we came across a small issue they gave me several options and pricing so I could make an informed decision. They also will communicate by text which is very helpful. Services: Installation, Install AC
Efraim Nathan
May 14, 2022
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I have been maintaining our H&AC with Tis comp for the past 8 years! Excellent service, dependable professional & always on time! Very knowledgeable. Highly recommend this business Services: A/C system maintenance, HVAC system maintenance
John Dang
May 06, 2022
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We switched to Michall Daimion a few years ago to maintain our HVACs and have been very happy with their services over the last few years. Today I had the pleasure of having Dan Glass come to service our systems and I wanted to acknowledge his professionalism, customer service and overall experience. He addressed a couple of concerns I had and gave me potential solutions. What I really appreciated was that he didn't rush through the job and took the time to explain things, didn't try to upsell me, and educated me on what I need to do for the future (both preventative and also replacement).
Jamie Davis
Mar 31, 2022
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I just had the most fantastic customer experience EVER from James who came to do routine maintenance on our air-conditioning units. He was extremely professional, timely and proactively offered easy tips and hints on how we help maintain our system between visits. Based on this experience, I would recommend Michall Daimion Heating and Air Conditioning to anyone.
Michael P.
Feb 28, 2022
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We switched to Michall Daimion from another company and had our first maintenance service yesterday. We're very impressed. On time, heads up before they arrived, very professional, explained all they did and were careful to keep everything clean and neat. We've also been very impressed with how pleasant and responsive the office staff is. So far, we're very happy we switched to Michall Daimion.
Carmen Di Giovanni
Feb 09, 2022
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We selected Daimion from four bidders for a new air conditioner. During the work they discovered mold in the supply trunk. They were able, with no prior notice, fabricate new supply and return ducts to restore heat in about 36 hours. Our system is now state-of-the art andmold-free. Services: HVAC duct & vent installation, Install AC, Install thermostat
