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50+ Years
experience
Emergency
services
Trusted HVAC Services in Lake Zurich, IL
Since 1967, Markgraf's Heating & Air Conditioning has been dedicated to providing comprehensive HVAC solutions for residential and commercial clients across the Chicagoland area. Our team of certified technicians brings decades of combined experience to every project, specializing in heating, air conditioning, duct cleaning, radiant heat, indoor air quality, geothermal systems, and commercial HVAC services. As a Better Business Bureau Accredited Business with an A+ rating, we uphold the highest standards of reliability and customer satisfaction.

Our commitment to excellence is demonstrated through 24/7 emergency service, free estimates, senior and military discounts, and a vast inventory of brand-name products. We prioritize ongoing training to maintain technical expertise while offering financing options that make comfort solutions accessible. With a focus on preventive maintenance and energy-efficient technologies, we help clients create healthier indoor environments while reducing long-term operating costs.
Services
Heating Air Conditioning Duct Cleaning Radiant Heat Indoor Air Quality Geothermal Commercial HVAC Emergency Repairs Preventative Maintenance System Installations
Details
  • Year established: 1967
Highlights and features
  • We offer over 45 years of HVAC expertise in the Chicagoland area
  • Our team provides 24/7 emergency service for urgent heating and cooling needs
  • Senior and military discounts available on all services and equipment
  • Free estimates ensure transparent budgeting for every HVAC project
  • We service all makes and models with certified technicians
Associations and certifications
  • Better Business Bureau
Services
Heating Repair
Our certified technicians provide comprehensive heating repair for all makes and models. With 24/7 emergency service and a 1-year labor warranty on Carrier installations, we ensure reliable winter operation. Preventative maintenance and annual check-ups help avoid unexpected breakdowns while extending equipment lifespan.
Air Conditioning
We offer complete air conditioning solutions including repair, installation, and maintenance. State-of-the-art diagnostics identify issues quickly while our in-house parts inventory ensures faster repairs. Energy-efficient replacements reduce summer cooling costs while maintaining optimal indoor comfort levels.
Duct Cleaning
Professional duct cleaning improves indoor air quality and system efficiency using advanced Roto Brush technology. This EPA-recommended service removes contaminants that circulate through homes 3-5 times daily while potentially reducing energy bills through improved airflow.
Indoor Air Quality
Our indoor air quality solutions address humidity control, allergen reduction, and air purification. Whole-home systems remove dust, pollen, and pathogens while maintaining optimal moisture levels. These improvements particularly benefit allergy sufferers and households with respiratory conditions.
Commercial HVAC
Full-service commercial HVAC solutions include system design, installation, and maintenance for business properties. Energy-efficient upgrades reduce operating costs while preventive maintenance programs ensure reliable temperature control in work environments. Emergency service maintains business continuity during critical system failures.
Questions
Do you offer emergency HVAC services?
Yes, we provide 24/7 emergency service for urgent heating and cooling repairs across the Chicagoland area.
Are financing options available for HVAC replacements?
Yes, we offer financing options to help customers afford necessary heating and cooling system replacements.
What HVAC services do you provide?
We offer complete HVAC services including heating, air conditioning, duct cleaning, radiant heat, indoor air quality solutions, and commercial HVAC systems.
Do you service all HVAC equipment brands?
Yes, our certified technicians service all makes and models of heating and cooling equipment.
Are there any service discounts available?
We offer senior and military discounts on all HVAC services and equipment installations.
Do you provide free estimates?
Yes, we offer free estimates for all HVAC repair and replacement projects before work begins.