Business Details
50 Years
experience
Emergency
services
Trusted HVAC Services in Malvern, PA Since 1976
Michall Daimion Heating & Air Conditioning has served the Main Line since 1976, delivering high-quality HVAC services rooted in integrity and expertise. Founded in a bedroom closet with a landline, we grew alongside Chester County's housing boom, evolving into a trusted partner for homeowners seeking peace of mind. Our mission centers on helping families feel comfortable and secure through skillful installation, repair, and maintenance of heating, air conditioning, and indoor air quality systems. With NATE-certified technicians and NCI-certified diagnostics, we prioritize collaboration, accountability, respect, and excellence in every project.We listen carefully to client needs, offering honest counsel and tailored solutions that empower informed decisions. Our commitment to timely, efficient service includes open communication, priority scheduling for maintenance plan members, and 24/7 emergency availability. As a family-run, locally operated business, we combine decades of experience with personalized care, ensuring every home we serve remains a sanctuary of comfort and safety.
Services
HVAC Installation
Air Conditioning Repair
Duct Cleaning
Boiler Maintenance
Indoor Air Quality
Water Heater Services
Emergency HVAC Service
System Diagnostics
Thermostat Upgrades
Energy Efficiency Solutions
Details
- Year established: 1976
Highlights and features
- 40+ years of HVAC expertise serving the Main Line community
- NATE-certified technicians ensure industry-leading technical proficiency
- 24/7 emergency service available for urgent heating/cooling needs
- Customer-centric approach with transparent communication and honest counsel
- Locally operated with deep knowledge of regional climate challenges
Associations and certifications
- NATE
- NCI
What people say
Top Notch service
Amazing ideas
Presented solutions
Family with immune issues
Help when needed
Services
HVAC Installation
We provide expert installation of heating, air conditioning, and ventilation systems with proper sizing for optimal efficiency. Our technicians handle complete system replacements, ensuring energy-efficient performance and proper integration with existing infrastructure. Serving Main Line homeowners since 1976, we guarantee durable installations that enhance home comfort while reducing long-term operating costs.
Air Conditioning Repair
Our NATE-certified technicians diagnose and repair all cooling system issues, from refrigerant leaks to compressor failures. We prioritize timely repairs to restore comfort during Pennsylvania's hot summers. With 40+ years of experience, we ensure reliable fixes that extend system lifespan while maintaining energy efficiency standards for residential properties.
Duct Cleaning
Professional duct cleaning services improve indoor air quality by removing contaminants from HVAC systems. We use NCI-certified methods to test and clean ductwork, addressing leaks and inefficiencies. This service enhances system performance, reduces allergens, and maintains proper airflow throughout homes in Malvern and surrounding areas.
Boiler Maintenance
We offer comprehensive boiler maintenance and repair services to ensure reliable winter heating. Our technicians perform safety checks, efficiency testing, and component replacements to prevent breakdowns. With specialized expertise in boiler systems, we help homeowners maintain consistent warmth while optimizing energy consumption across Chester County.
Indoor Air Quality
Our indoor air quality solutions include air purifiers, humidifiers, and ventilation systems to create healthier living environments. We assess home-specific needs and install IQAir purifiers and HRV/ERV systems that remove pollutants. These services address allergy concerns and maintain balanced humidity levels for improved respiratory health.
People
Michall Daimion
Founder
Michall founded the company in 1976, growing it from a bedroom operation to Main Line's premier HVAC provider. With decades of hands-on experience, he established the C.A.R.E. values that continue guiding our service approach today.
Heather Daimion
Manager
Heather Daimion leads daily operations with a focus on maintaining the company's integrity and customer-first philosophy. She ensures our team continues delivering the exceptional service standards established since our founding.
Questions
What HVAC services do you offer?
We provide complete HVAC solutions including installation, repair, and maintenance for heating, cooling, ductwork, and indoor air quality systems.
Do you offer emergency HVAC service?
Yes, we provide 24/7 emergency service with technicians available to address urgent heating and cooling needs at any hour.
Are your technicians certified?
All our technicians are NATE-certified, and we maintain NCI-certified residential system testing capabilities for performance diagnostics.
Do you serve areas outside Malvern?
We serve the entire Main Line and Chester County, including Berwyn, Bryn Mawr, Paoli, Wayne, and surrounding communities.
What financing options are available?
We offer financing through Wells Fargo and Greensky for HVAC installations and major system replacements. Ask about current promotions.
How can I schedule service?
Call (610)644-0537 anytime or use our online scheduling system to book appointments for maintenance, repairs, or emergency service.
Reviews (7)
Pat Graham
Dec 16, 2021
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Positive:Professionalism,Punctuality,Quality,Responsiveness,Value
We have been customers of this company for more than 20 years. We have nothing but good things to say about them Even in the middle of a terrible snow storm they answered my call and helped troubleshoot our problem. Then they even called back to make sure we were ok. They are on time and neat. Very nice people!
Service:HVAC maintenance
We have been customers of this company for more than 20 years. We have nothing but good things to say about them Even in the middle of a terrible snow storm they answered my call and helped troubleshoot our problem. Then they even called back to make sure we were ok. They are on time and neat. Very nice people!
Service:HVAC maintenance
Denis Andrew
Dec 01, 2021
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Technicians are competent and courteous. Arrive on time & their service is performed in a timely fashion.
Jayanth Panyam
Nov 29, 2021
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Positive:Professionalism,Punctuality,Responsiveness
Called them for after hour furnace service. The tech arrived on time. By then, we realized the problem was not with the furnace. He was very courteous and gracious about not needing the service. I will definitely use them the next time I actually need some work done.
Service:Heating system repair
Called them for after hour furnace service. The tech arrived on time. By then, we realized the problem was not with the furnace. He was very courteous and gracious about not needing the service. I will definitely use them the next time I actually need some work done.
Service:Heating system repair
Christine Casey
Aug 12, 2021
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Super responsive, on time, professional, and clean! I’ve been using them for a while now, wouldn’t think of switching!
Jennifer Edenborn Radano
Jul 30, 2021
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Our AC stopping working yesterday. We have a yearly service contract with Michael Damion and called them first thing in the morning. They came out at 11:30 am same day and fixed our system. Ted was very knowledgeable and polite. Our home is cooling quickly and we are thankful for the quick service and not having a hot house in July. Great company! We have been with them for about 10 years. I highly recommend this small local business.
Chris McConathy
Jul 25, 2021
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My service member Mike was probably one of the most professional and knowledgeable guys I have ever worked with. He was thorough, and explained everything along the way. Personally as I am guy who likes to be involved and know whats going on during the process he informed me of every step along the way. I dont know why I didnt use this local hvac company sooner, but I would and will recommend this company to anyone since they have a high standard of professionalism.
Susan Lubking
Jul 18, 2021
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Was short and sweet. Very nicely learned that it is better to buy a new one than fix the old. Serviceman was very well informed and checked the various components which could be causing the problem. He also did me a HUGE favor by getting out his ladder and climbing up to my roof to change two burned out spotlights. We are a house full of old women (83,78,60) and I could not figure out how I was going to get this done. I offered to pay him but he said no. ( I did tip him 😜
